{"kind": "psql", "major": "18", "item": {"slug": "cmd-68-65-6c-70", "name": "\\help", "name_zh": "", "category": "\u811a\u672c\u4e0e\u5e2e\u52a9", "summary": "\u7ed9\u51fa\u6307\u5b9a SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\u5982\u679c\u672a\u6307\u5b9a command \uff0c\u5219 psql \u5c06\u5217\u51fa\u6240\u6709\u53ef\u7528\u8bed\u6cd5\u5e2e\u52a9\u7684\u547d\u4ee4\u3002\u5982\u679c command \u662f\u661f\u53f7\uff08 * \uff09\uff0c\u5219\u663e\u793a\u6240\u6709 SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002", "aliases": ["\\help"], "content_hash": "0b205c8ffd69314886c5931d965f8aba035c1cc34e861ebbca645b7bc29561d3", "versions": {"10": {"facts": [{"label": "\u5ba2\u6237\u7aef", "value": "psql 10.23"}, {"label": "\u533a\u5206\u5927\u5c0f\u5199\u7684\u5199\u6cd5", "value": "\\help"}], "tables": [{"key": "spellings", "rows": [{"command": {"url": "/wiki/psql/cmd-68/?v=10", "text": "\\h"}, "modifiers": "\u6b64\u8bed\u6cd5\u7b7e\u540d\u672a\u5217\u51fa"}, {"command": {"url": "/wiki/psql/cmd-68-65-6c-70/?v=10", "text": "\\help"}, "modifiers": "\u6b64\u8bed\u6cd5\u7b7e\u540d\u672a\u5217\u51fa"}], "title": "\u672c\u7248\u624b\u518c\u4e2d\u7684\u5199\u6cd5", "columns": [{"key": "command", "label": "\u547d\u4ee4"}, {"key": "modifiers", "label": "\u624b\u518c\u4e2d\u7684\u540e\u7f00\u4fee\u9970\u7b26"}]}], "command": "\\help", "related": [{"url": "/wiki/psql/cmd-68/?v=10", "label": "\\h"}, {"url": "/wiki/tool/psql/?v=10", "label": "psql \u547d\u4ee4\u884c\u9009\u9879\u53ca\u5b8c\u6574\u624b\u518c"}], "release": {"ref": "https://ftp.postgresql.org/pub/source/v10.23/postgresql-10.23.tar.bz2", "label": "10.23", "major": "10", "channel": "historical", "manifest": {"pdf": {"A4": {"url": "/files/documentation/pdf/10/postgresql-10-A4.pdf", "bytes": 12631706, "pages": 2591, "sha256": "34497ab9efb45c5bdf1bd11b9016b5451354feb462fa029cf74557a5fa5fbbc1", "built_at": "2026-09-26"}, "US": {"url": "/files/documentation/pdf/10/postgresql-10-US.pdf", "bytes": 12531684, "pages": 2724, "sha256": "429cc7133ddf4f97c560aa466dc9caea4b718721a8321e293357037cf0af4733", "built_at": "2026-09-26"}}, "tree": "10", "index": "index.html", "major": "10", "pages": 1085, "release": "10.23", "source_url": "https://ftp.postgresql.org/pub/source/v10.23/postgresql-10.23.tar.bz2", "svg_assets": 0, "source_mode": "en HTML verified against the pinned official archive", "source_sha256": "94a4b2528372458e5662c18d406629266667c437198160a18cdfd2c4a4d6eee9"}, "revision": "f9301feba91e2e2566038a36b8cee0e4402db68989538f88670fddd20b1f78ea", "evidence_kind": "English manual and source declarations", "source_sha256": "94a4b2528372458e5662c18d406629266667c437198160a18cdfd2c4a4d6eee9"}, "sources": [{"url": "/docs/10/app-psql.html#APP-PSQL-META-COMMANDS", "file": "app-psql.html", "label": "10.23 English manual \u00b7 app-psql.html", "anchor": "APP-PSQL-META-COMMANDS", "sha256": "9e11fe3148cb8c085808f632ed972aa4514332a67758a083a080169101eeb7a4"}], "zh_from": {"kind": "same-version-chinese-manual-with-source-derived-identity", "manual": {"url": "/zh/docs/10/app-psql.html#APP-PSQL-META-COMMANDS", "anchor": "APP-PSQL-META-COMMANDS", "locale": "zh-Hans", "version": "10", "build_id": 63, "page_key": "app-psql.html", "extraction": "exact-definition", "source_hash": "d8122755e2eb3b6ec41a78b0f6218b4c63e0caac5190724266155c8abf3676f5", "fragment_sha256": "b43fcd7574d27dbf2eb30ba247f72ea1177a74bf7a35e525c200ae6c59eb729c", "source_revision": "unknown:rendered-translation-baseline", "translation_revision": "snapshot:sha256:62997ea80516ad012fbf6359de33f3b016b54c47e2df76e75606116b4baaf8e5", "translated_from_revision": null}, "body_sha256": "6ac192219f5c096a509d3b1772ec2fc7e8118cf163ea6c119030aae4a1781dee", "runtime_rerun": false, "authored_translation": "source-derived-identity", "source_facts_revision": "f9301feba91e2e2566038a36b8cee0e4402db68989538f88670fddd20b1f78ea"}, "facts_zh": [{"label": "\u5ba2\u6237\u7aef", "value": "psql 10.23"}, {"label": "\u533a\u5206\u5927\u5c0f\u5199\u7684\u5199\u6cd5", "value": "\\help"}], "sections": [], "center_zh": {"title": "\\help", "locale": "zh-Hans", "source": {"key": "cmd-68-65-6c-70", "locale": "zh-Hans", "version": "10", "text_hash": "72e755c72d6982b350eca09c0bbd896458a45d121587dc8508fc4425ecc5e72d", "collection": "psql", "dataset_hash": "7c31b524dfe136022d39a6ae8dcfac6b3bbd5f8fdaf422536599981252aff0c9", "source_database": "center", "source_revision": "f9301feba91e2e2566038a36b8cee0e4402db68989538f88670fddd20b1f78ea"}, "payload": {"facts": [{"label": "\u5ba2\u6237\u7aef", "value": "psql 10.23"}, {"label": "\u533a\u5206\u5927\u5c0f\u5199\u7684\u5199\u6cd5", "value": "\\help"}], "tables": [{"key": "spellings", "rows": [{"command": {"url": "/wiki/psql/cmd-68/?v=10", "text": "\\h"}, "modifiers": "\u6b64\u8bed\u6cd5\u7b7e\u540d\u672a\u5217\u51fa"}, {"command": {"url": "/wiki/psql/cmd-68-65-6c-70/?v=10", "text": "\\help"}, "modifiers": "\u6b64\u8bed\u6cd5\u7b7e\u540d\u672a\u5217\u51fa"}], "title": "\u672c\u7248\u624b\u518c\u4e2d\u7684\u5199\u6cd5", "columns": [{"key": "command", "label": "\u547d\u4ee4"}, {"key": "modifiers", "label": "\u624b\u518c\u4e2d\u7684\u540e\u7f00\u4fee\u9970\u7b26"}]}], "zh_from": {"kind": "same-version-chinese-manual-with-source-derived-identity", "manual": {"url": "/zh/docs/10/app-psql.html#APP-PSQL-META-COMMANDS", "anchor": "APP-PSQL-META-COMMANDS", "locale": "zh-Hans", "version": "10", "build_id": 63, "page_key": "app-psql.html", "extraction": "exact-definition", "source_hash": "d8122755e2eb3b6ec41a78b0f6218b4c63e0caac5190724266155c8abf3676f5", "fragment_sha256": "b43fcd7574d27dbf2eb30ba247f72ea1177a74bf7a35e525c200ae6c59eb729c", "source_revision": "unknown:rendered-translation-baseline", "translation_revision": "snapshot:sha256:62997ea80516ad012fbf6359de33f3b016b54c47e2df76e75606116b4baaf8e5", "translated_from_revision": null}, "body_sha256": "6ac192219f5c096a509d3b1772ec2fc7e8118cf163ea6c119030aae4a1781dee", "runtime_rerun": false, "authored_translation": "source-derived-identity", "source_facts_revision": "f9301feba91e2e2566038a36b8cee0e4402db68989538f88670fddd20b1f78ea"}, "sections": [], "description_zh": "\u7ed9\u51fa\u6307\u5b9a SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\u5982\u679c\u672a\u6307\u5b9a command \uff0c\u5219 psql \u5c06\u5217\u51fa\u6240\u6709\u53ef\u7528\u8bed\u6cd5\u5e2e\u52a9\u7684\u547d\u4ee4\u3002\u5982\u679c command \u662f\u661f\u53f7\uff08 * \uff09\uff0c\u5219\u663e\u793a\u6240\u6709 SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002 \u4e0e\u5927\u591a\u6570\u5176\u4ed6\u5143\u547d\u4ee4\u4e0d\u540c\uff0c\u6574\u4e2a\u884c\u7684\u5269\u4f59\u90e8\u5206\u59cb\u7ec8\u88ab\u89c6\u4e3a \\help \u7684\u53c2\u6570\uff0c\u53c2\u6570\u4e2d\u4e0d\u8fdb\u884c\u53d8\u91cf\u63d2\u503c\u6216\u53cd\u5f15\u53f7\u6269\u5c55\u3002 \u6ce8\u610f \u4e3a\u4e86\u7b80\u5316\u8f93\u5165\uff0c\u7531\u591a\u4e2a\u5355\u8bcd\u7ec4\u6210\u7684\u547d\u4ee4\u4e0d\u9700\u8981\u52a0\u5f15\u53f7\u3002\u56e0\u6b64\uff0c\u53ef\u4ee5\u76f4\u63a5\u8f93\u5165 \\help alter table \u3002", "description_zh_html": "<p>psql \u547d\u4ee4 \\h or \\help [ command ]\u3002</p><h3>\u540c\u7248\u672c\u4e2d\u6587\u624b\u518c\u5b9a\u4e49</h3><dd><p>        \u7ed9\u51fa\u6307\u5b9a <acronym class=\"acronym\">SQL</acronym> \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\u5982\u679c\u672a\u6307\u5b9a <em class=\"replaceable\"><code>command</code></em>\uff0c\u5219 <span class=\"application\">psql</span> \u5c06\u5217\u51fa\u6240\u6709\u53ef\u7528\u8bed\u6cd5\u5e2e\u52a9\u7684\u547d\u4ee4\u3002\u5982\u679c <em class=\"replaceable\"><code>command</code></em> \u662f\u661f\u53f7\uff08<code class=\"literal\">*</code>\uff09\uff0c\u5219\u663e\u793a\u6240\u6709 <acronym class=\"acronym\">SQL</acronym> \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\n        </p><p>        \u4e0e\u5927\u591a\u6570\u5176\u4ed6\u5143\u547d\u4ee4\u4e0d\u540c\uff0c\u6574\u4e2a\u884c\u7684\u5269\u4f59\u90e8\u5206\u59cb\u7ec8\u88ab\u89c6\u4e3a<code class=\"command\">\\help</code> \u7684\u53c2\u6570\uff0c\u53c2\u6570\u4e2d\u4e0d\u8fdb\u884c\u53d8\u91cf\u63d2\u503c\u6216\u53cd\u5f15\u53f7\u6269\u5c55\u3002\n        </p><div class=\"note\"><h3 class=\"title\">\u6ce8\u610f</h3><p>        \u4e3a\u4e86\u7b80\u5316\u8f93\u5165\uff0c\u7531\u591a\u4e2a\u5355\u8bcd\u7ec4\u6210\u7684\u547d\u4ee4\u4e0d\u9700\u8981\u52a0\u5f15\u53f7\u3002\u56e0\u6b64\uff0c\u53ef\u4ee5\u76f4\u63a5\u8f93\u5165<strong class=\"userinput\"><code>\\help alter table</code></strong>\u3002\n        </p></div></dd><p><a href=\"/zh/docs/10/app-psql.html#APP-PSQL-META-COMMANDS\">\u67e5\u770b\u5b8c\u6574\u4e2d\u6587\u624b\u518c\u4e0e\u4e0a\u4e0b\u6587</a>\u3002</p>"}, "summary": "\u7ed9\u51fa\u6307\u5b9a SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\u5982\u679c\u672a\u6307\u5b9a command \uff0c\u5219 psql \u5c06\u5217\u51fa\u6240\u6709\u53ef\u7528\u8bed\u6cd5\u5e2e\u52a9\u7684\u547d\u4ee4\u3002\u5982\u679c command \u662f\u661f\u53f7\uff08 * \uff09\uff0c\u5219\u663e\u793a\u6240\u6709 SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002 \u4e0e\u5927\u591a\u6570\u5176\u4ed6\u5143\u547d\u4ee4\u4e0d\u540c\uff0c\u6574\u4e2a\u884c\u7684\u5269\u4f59\u90e8\u5206\u59cb\u7ec8\u88ab\u89c6\u4e3a \\help \u7684\u53c2\u6570\uff0c\u53c2\u6570\u4e2d\u4e0d\u8fdb\u884c\u53d8\u91cf\u63d2\u503c\u6216\u53cd\u5f15\u53f7\u6269\u5c55\u3002 \u6ce8\u610f \u4e3a\u4e86\u7b80\u5316\u8f93\u5165\uff0c\u7531\u591a\u4e2a\u5355\u8bcd\u7ec4\u6210\u7684\u547d\u4ee4\u4e0d\u9700\u8981\u52a0\u5f15\u53f7\u3002\u56e0\u6b64\uff0c\u53ef\u4ee5\u76f4\u63a5\u8f93\u5165 \\help alter table \u3002", "version": "10", "link_map": {"/zh/docs/10/app-psql.html#APP-PSQL-META-COMMANDS": "/docs/10/app-psql.html#APP-PSQL-META-COMMANDS"}, "body_html": "<p>psql \u547d\u4ee4 \\h or \\help [ command ]\u3002</p><h3>\u540c\u7248\u672c\u4e2d\u6587\u624b\u518c\u5b9a\u4e49</h3><dd><p>        \u7ed9\u51fa\u6307\u5b9a <acronym>SQL</acronym> \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\u5982\u679c\u672a\u6307\u5b9a <em><code>command</code></em>\uff0c\u5219 <span>psql</span> \u5c06\u5217\u51fa\u6240\u6709\u53ef\u7528\u8bed\u6cd5\u5e2e\u52a9\u7684\u547d\u4ee4\u3002\u5982\u679c <em><code>command</code></em> \u662f\u661f\u53f7\uff08<code>*</code>\uff09\uff0c\u5219\u663e\u793a\u6240\u6709 <acronym>SQL</acronym> \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\n        </p><p>        \u4e0e\u5927\u591a\u6570\u5176\u4ed6\u5143\u547d\u4ee4\u4e0d\u540c\uff0c\u6574\u4e2a\u884c\u7684\u5269\u4f59\u90e8\u5206\u59cb\u7ec8\u88ab\u89c6\u4e3a<code>\\help</code> \u7684\u53c2\u6570\uff0c\u53c2\u6570\u4e2d\u4e0d\u8fdb\u884c\u53d8\u91cf\u63d2\u503c\u6216\u53cd\u5f15\u53f7\u6269\u5c55\u3002\n        </p><div><h3>\u6ce8\u610f</h3><p>        \u4e3a\u4e86\u7b80\u5316\u8f93\u5165\uff0c\u7531\u591a\u4e2a\u5355\u8bcd\u7ec4\u6210\u7684\u547d\u4ee4\u4e0d\u9700\u8981\u52a0\u5f15\u53f7\u3002\u56e0\u6b64\uff0c\u53ef\u4ee5\u76f4\u63a5\u8f93\u5165<strong><code>\\help alter table</code></strong>\u3002\n        </p></div></dd><p><a href=\"/zh/docs/10/app-psql.html#APP-PSQL-META-COMMANDS\" rel=\"nofollow\">\u67e5\u770b\u5b8c\u6574\u4e2d\u6587\u624b\u518c\u4e0e\u4e0a\u4e0b\u6587</a>\u3002</p>", "body_sha256": "7fdee7439b351c81d118fb587fae1d93bd4ab18e7cfffdcc5ac2d5a345e9e574", "content_hash": "72e755c72d6982b350eca09c0bbd896458a45d121587dc8508fc4425ecc5e72d", "source_database": "center", "source_revision": "f9301feba91e2e2566038a36b8cee0e4402db68989538f88670fddd20b1f78ea"}, "modifiers": [], "signature": "\\h or \\help [ command ]", "spellings": ["\\h", "\\help"], "tables_zh": [{"key": "spellings", "rows": [{"command": {"url": "/wiki/psql/cmd-68/?v=10", "text": "\\h"}, "modifiers": "\u6b64\u8bed\u6cd5\u7b7e\u540d\u672a\u5217\u51fa"}, {"command": {"url": "/wiki/psql/cmd-68-65-6c-70/?v=10", "text": "\\help"}, "modifiers": "\u6b64\u8bed\u6cd5\u7b7e\u540d\u672a\u5217\u51fa"}], "title": "\u672c\u7248\u624b\u518c\u4e2d\u7684\u5199\u6cd5", "columns": [{"key": "command", "label": "\u547d\u4ee4"}, {"key": "modifiers", "label": "\u624b\u518c\u4e2d\u7684\u540e\u7f00\u4fee\u9970\u7b26"}]}], "description": ["\u7ed9\u51fa\u6307\u5b9a SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\u5982\u679c\u672a\u6307\u5b9a command \uff0c\u5219 psql \u5c06\u5217\u51fa\u6240\u6709\u53ef\u7528\u8bed\u6cd5\u5e2e\u52a9\u7684\u547d\u4ee4\u3002\u5982\u679c command \u662f\u661f\u53f7\uff08 * \uff09\uff0c\u5219\u663e\u793a\u6240\u6709 SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002 \u4e0e\u5927\u591a\u6570\u5176\u4ed6\u5143\u547d\u4ee4\u4e0d\u540c\uff0c\u6574\u4e2a\u884c\u7684\u5269\u4f59\u90e8\u5206\u59cb\u7ec8\u88ab\u89c6\u4e3a \\help \u7684\u53c2\u6570\uff0c\u53c2\u6570\u4e2d\u4e0d\u8fdb\u884c\u53d8\u91cf\u63d2\u503c\u6216\u53cd\u5f15\u53f7\u6269\u5c55\u3002 \u6ce8\u610f \u4e3a\u4e86\u7b80\u5316\u8f93\u5165\uff0c\u7531\u591a\u4e2a\u5355\u8bcd\u7ec4\u6210\u7684\u547d\u4ee4\u4e0d\u9700\u8981\u52a0\u5f15\u53f7\u3002\u56e0\u6b64\uff0c\u53ef\u4ee5\u76f4\u63a5\u8f93\u5165 \\help alter table \u3002"], "manual_html": "", "manual_path": "app-psql.html#APP-PSQL-META-COMMANDS", "sections_zh": [], "localization": {"status": "complete", "sources": [{"url": "/docs/10/app-psql.html", "method": "same-major semantic node", "sha256": "07e2383663e136e49c565dc43b76b773af4caa89393ce1854d32ec8cc15f2d3c", "language": "zh", "matched_nodes": ["#APP-PSQL/div[5]/div[1]/dl[0]/dd[41]/div[1]/h3[0]", "#APP-PSQL/div[7]/div[3]/div[10]/dl[0]/dd[105]/div[2]/p[1]", "#APP-PSQL/div[7]/div[3]/div[10]/dl[0]/dd[105]/p[0]", "#APP-PSQL/div[7]/div[3]/div[10]/dl[0]/dd[105]/p[1]", "#APP-PSQL/div[7]/div[3]/div[10]/dl[0]/dt[104]"]}], "language": "zh", "original_text": {"/versions/10/description/0": "Gives syntax help on the specified SQL command. If command is not specified, then psql will list all the commands for which syntax help is available. If command is an asterisk ( * ), then syntax help on all SQL commands is shown.", "/versions/10/facts/0/label": "Client", "/versions/10/facts/1/label": "Case-sensitive spelling", "/versions/10/tables/0/title": "Spellings in this manual definition", "/versions/10/related/1/label": "psql command-line options and complete manual", "/versions/10/tables/0/columns/0/label": "Command", "/versions/10/tables/0/columns/1/label": "Documented suffix modifiers", "/versions/10/tables/0/rows/0/modifiers": "None listed in this signature", "/versions/10/tables/0/rows/1/modifiers": "None listed in this signature"}, "fallback_fields": [], "source_language": "en", "original_snapshot_sha256": "bdddb7dbfdab0307b527af806e72c9ff859b9d6e414326ca8a2567b496c74662", "canonical_center_text_hash": "72e755c72d6982b350eca09c0bbd896458a45d121587dc8508fc4425ecc5e72d"}, "description_zh": "\u7ed9\u51fa\u6307\u5b9a SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\u5982\u679c\u672a\u6307\u5b9a command \uff0c\u5219 psql \u5c06\u5217\u51fa\u6240\u6709\u53ef\u7528\u8bed\u6cd5\u5e2e\u52a9\u7684\u547d\u4ee4\u3002\u5982\u679c command \u662f\u661f\u53f7\uff08 * \uff09\uff0c\u5219\u663e\u793a\u6240\u6709 SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002 \u4e0e\u5927\u591a\u6570\u5176\u4ed6\u5143\u547d\u4ee4\u4e0d\u540c\uff0c\u6574\u4e2a\u884c\u7684\u5269\u4f59\u90e8\u5206\u59cb\u7ec8\u88ab\u89c6\u4e3a \\help \u7684\u53c2\u6570\uff0c\u53c2\u6570\u4e2d\u4e0d\u8fdb\u884c\u53d8\u91cf\u63d2\u503c\u6216\u53cd\u5f15\u53f7\u6269\u5c55\u3002 \u6ce8\u610f \u4e3a\u4e86\u7b80\u5316\u8f93\u5165\uff0c\u7531\u591a\u4e2a\u5355\u8bcd\u7ec4\u6210\u7684\u547d\u4ee4\u4e0d\u9700\u8981\u52a0\u5f15\u53f7\u3002\u56e0\u6b64\uff0c\u53ef\u4ee5\u76f4\u63a5\u8f93\u5165 \\help alter table \u3002", "comparison_data": {"modifiers": [], "signature": "\\h or \\help [ command ]", "spellings": ["\\h", "\\help"], "definition": "Gives syntax help on the specified SQL command. If command is not specified, then psql will list all the commands for which syntax help is available. If command is an asterisk ( * ), then syntax help on all SQL commands is shown. Unlike most other meta-commands, the entire remainder of the line is always taken to be the argument(s) of \\help , and neither variable interpolation nor backquote expansion are performed in the arguments. Note To simplify typing, commands that consists of several words do not have to be quoted. Thus it is fine to type \\help alter table ."}, "comparison_hash": "b577574b2085fe90e006df02a39f4541a330b0431267a9fe13837edb82fa8cd5", "manual_language": "zh", "description_zh_html": "<p>psql \u547d\u4ee4 \\h or \\help [ command ]\u3002</p><h3>\u540c\u7248\u672c\u4e2d\u6587\u624b\u518c\u5b9a\u4e49</h3><dd><p>        \u7ed9\u51fa\u6307\u5b9a <acronym>SQL</acronym> \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\u5982\u679c\u672a\u6307\u5b9a <em><code>command</code></em>\uff0c\u5219 <span>psql</span> \u5c06\u5217\u51fa\u6240\u6709\u53ef\u7528\u8bed\u6cd5\u5e2e\u52a9\u7684\u547d\u4ee4\u3002\u5982\u679c <em><code>command</code></em> \u662f\u661f\u53f7\uff08<code>*</code>\uff09\uff0c\u5219\u663e\u793a\u6240\u6709 <acronym>SQL</acronym> \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\n        </p><p>        \u4e0e\u5927\u591a\u6570\u5176\u4ed6\u5143\u547d\u4ee4\u4e0d\u540c\uff0c\u6574\u4e2a\u884c\u7684\u5269\u4f59\u90e8\u5206\u59cb\u7ec8\u88ab\u89c6\u4e3a<code>\\help</code> \u7684\u53c2\u6570\uff0c\u53c2\u6570\u4e2d\u4e0d\u8fdb\u884c\u53d8\u91cf\u63d2\u503c\u6216\u53cd\u5f15\u53f7\u6269\u5c55\u3002\n        </p><div><h3>\u6ce8\u610f</h3><p>        \u4e3a\u4e86\u7b80\u5316\u8f93\u5165\uff0c\u7531\u591a\u4e2a\u5355\u8bcd\u7ec4\u6210\u7684\u547d\u4ee4\u4e0d\u9700\u8981\u52a0\u5f15\u53f7\u3002\u56e0\u6b64\uff0c\u53ef\u4ee5\u76f4\u63a5\u8f93\u5165<strong><code>\\help alter table</code></strong>\u3002\n        </p></div></dd><p><a href=\"/zh/docs/10/app-psql.html#APP-PSQL-META-COMMANDS\" rel=\"nofollow\">\u67e5\u770b\u5b8c\u6574\u4e2d\u6587\u624b\u518c\u4e0e\u4e0a\u4e0b\u6587</a>\u3002</p>"}, "11": {"facts": [{"label": "\u5ba2\u6237\u7aef", "value": "psql 11.22"}, {"label": "\u533a\u5206\u5927\u5c0f\u5199\u7684\u5199\u6cd5", "value": "\\help"}], "tables": [{"key": "spellings", "rows": [{"command": {"url": "/wiki/psql/cmd-68/?v=11", "text": "\\h"}, "modifiers": "\u6b64\u8bed\u6cd5\u7b7e\u540d\u672a\u5217\u51fa"}, {"command": {"url": "/wiki/psql/cmd-68-65-6c-70/?v=11", "text": "\\help"}, "modifiers": "\u6b64\u8bed\u6cd5\u7b7e\u540d\u672a\u5217\u51fa"}], "title": "\u672c\u7248\u624b\u518c\u4e2d\u7684\u5199\u6cd5", "columns": [{"key": "command", "label": "\u547d\u4ee4"}, {"key": "modifiers", "label": "\u624b\u518c\u4e2d\u7684\u540e\u7f00\u4fee\u9970\u7b26"}]}], "command": "\\help", "related": [{"url": "/wiki/psql/cmd-68/?v=11", "label": "\\h"}, {"url": "/wiki/tool/psql/?v=11", "label": "psql \u547d\u4ee4\u884c\u9009\u9879\u53ca\u5b8c\u6574\u624b\u518c"}], "release": {"ref": "https://ftp.postgresql.org/pub/source/v11.22/postgresql-11.22.tar.bz2", "label": "11.22", "major": "11", "channel": "historical", "manifest": {"pdf": {"A4": {"url": "/files/documentation/pdf/11/postgresql-11-A4.pdf", "bytes": 13057499, "pages": 2732, "sha256": "41d75855e610d0d9b8802b87dc5b080bef8d7e91c7cf69401fbf8d3cf801b4b5", "built_at": "2026-09-26"}, "US": {"url": "/files/documentation/pdf/11/postgresql-11-US.pdf", "bytes": 12961189, "pages": 2883, "sha256": "6a8899ef36935a5b7ed2b436207564a567a4ef1eb1c2200195876b8de4d4fa30", "built_at": "2026-09-26"}}, "tree": "11", "index": "index.html", "major": "11", "pages": 1125, "release": "11.22", "source_url": "https://ftp.postgresql.org/pub/source/v11.22/postgresql-11.22.tar.bz2", "svg_assets": 0, "source_mode": "en HTML verified against the pinned official archive", "source_sha256": "2cb7c97d7a0d7278851bbc9c61f467b69c094c72b81740b751108e7892ebe1f0"}, "revision": "53315ddaf3b3f9e6669fd1edc096bbb2cd4a65ea3e836c89e542b43af9ba3a7f", "evidence_kind": "English manual and source declarations", "source_sha256": "2cb7c97d7a0d7278851bbc9c61f467b69c094c72b81740b751108e7892ebe1f0"}, "sources": [{"url": "/docs/11/app-psql.html#APP-PSQL-META-COMMANDS", "file": "app-psql.html", "label": "11.22 English manual \u00b7 app-psql.html", "anchor": "APP-PSQL-META-COMMANDS", "sha256": "32c4d489e91e59715de2f7c3264fcccab3dd1eca54673dbfeac61304b0c54d4d"}], "zh_from": {"kind": "same-version-chinese-manual-with-source-derived-identity", "manual": {"url": "/zh/docs/11/app-psql.html#APP-PSQL-META-COMMANDS", "anchor": "APP-PSQL-META-COMMANDS", "locale": "zh-Hans", "version": "11", "build_id": 64, "page_key": "app-psql.html", "extraction": "exact-definition", "source_hash": "5d6b0e557e9e1f0aed36485762d9b52d3f89da8c674d11a394a38facf6bc66b1", "fragment_sha256": "55e9d0e1a8907aaef85246c07fe378bf6ab581bd718b91e27a09cd1124898d27", "source_revision": "unknown:rendered-translation-baseline", "translation_revision": "snapshot:sha256:ef5c7bc074acae9795db16e6b7482aea3b222bd4bcce0f76831332b97a21e8a1", "translated_from_revision": null}, "body_sha256": "f9686ad48e115886321c9002c8cd45fa75fac951461eb841d0ad137cddb4f88a", "runtime_rerun": false, "authored_translation": "source-derived-identity", "source_facts_revision": "53315ddaf3b3f9e6669fd1edc096bbb2cd4a65ea3e836c89e542b43af9ba3a7f"}, "facts_zh": [{"label": "\u5ba2\u6237\u7aef", "value": "psql 11.22"}, {"label": "\u533a\u5206\u5927\u5c0f\u5199\u7684\u5199\u6cd5", "value": "\\help"}], "sections": [], "center_zh": {"title": "\\help", "locale": "zh-Hans", "source": {"key": "cmd-68-65-6c-70", "locale": "zh-Hans", "version": "11", "text_hash": "7ae64f68ad47f6c67375adb92ca1ed025487e54bd3ab83609903fdc8bc97d40d", "collection": "psql", "dataset_hash": "7c31b524dfe136022d39a6ae8dcfac6b3bbd5f8fdaf422536599981252aff0c9", "source_database": "center", "source_revision": "53315ddaf3b3f9e6669fd1edc096bbb2cd4a65ea3e836c89e542b43af9ba3a7f"}, "payload": {"facts": [{"label": "\u5ba2\u6237\u7aef", "value": "psql 11.22"}, {"label": "\u533a\u5206\u5927\u5c0f\u5199\u7684\u5199\u6cd5", "value": "\\help"}], "tables": [{"key": "spellings", "rows": [{"command": {"url": "/wiki/psql/cmd-68/?v=11", "text": "\\h"}, "modifiers": "\u6b64\u8bed\u6cd5\u7b7e\u540d\u672a\u5217\u51fa"}, {"command": {"url": "/wiki/psql/cmd-68-65-6c-70/?v=11", "text": "\\help"}, "modifiers": "\u6b64\u8bed\u6cd5\u7b7e\u540d\u672a\u5217\u51fa"}], "title": "\u672c\u7248\u624b\u518c\u4e2d\u7684\u5199\u6cd5", "columns": [{"key": "command", "label": "\u547d\u4ee4"}, {"key": "modifiers", "label": "\u624b\u518c\u4e2d\u7684\u540e\u7f00\u4fee\u9970\u7b26"}]}], "zh_from": {"kind": "same-version-chinese-manual-with-source-derived-identity", "manual": {"url": "/zh/docs/11/app-psql.html#APP-PSQL-META-COMMANDS", "anchor": "APP-PSQL-META-COMMANDS", "locale": "zh-Hans", "version": "11", "build_id": 64, "page_key": "app-psql.html", "extraction": "exact-definition", "source_hash": "5d6b0e557e9e1f0aed36485762d9b52d3f89da8c674d11a394a38facf6bc66b1", "fragment_sha256": "55e9d0e1a8907aaef85246c07fe378bf6ab581bd718b91e27a09cd1124898d27", "source_revision": "unknown:rendered-translation-baseline", "translation_revision": "snapshot:sha256:ef5c7bc074acae9795db16e6b7482aea3b222bd4bcce0f76831332b97a21e8a1", "translated_from_revision": null}, "body_sha256": "f9686ad48e115886321c9002c8cd45fa75fac951461eb841d0ad137cddb4f88a", "runtime_rerun": false, "authored_translation": "source-derived-identity", "source_facts_revision": "53315ddaf3b3f9e6669fd1edc096bbb2cd4a65ea3e836c89e542b43af9ba3a7f"}, "sections": [], "description_zh": "\u7ed9\u51fa\u6307\u5b9a SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\u5982\u679c\u672a\u6307\u5b9a command \uff0c\u5219 psql \u5c06\u5217\u51fa\u6240\u6709\u53ef\u7528\u8bed\u6cd5\u5e2e\u52a9\u7684\u547d\u4ee4\u3002\u5982\u679c command \u662f\u661f\u53f7\uff08 * \uff09\uff0c\u5219\u663e\u793a\u6240\u6709 SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002 \u4e0e\u5927\u591a\u6570\u5176\u4ed6\u5143\u547d\u4ee4\u4e0d\u540c\uff0c\u6574\u4e2a\u884c\u7684\u5269\u4f59\u90e8\u5206\u59cb\u7ec8\u88ab\u89c6\u4e3a \\help \u7684\u53c2\u6570\uff0c\u53c2\u6570\u4e2d\u4e0d\u8fdb\u884c\u53d8\u91cf\u63d2\u503c\u6216\u53cd\u5f15\u53f7\u6269\u5c55\u3002 \u6ce8\u610f \u4e3a\u4e86\u7b80\u5316\u8f93\u5165\uff0c\u7531\u591a\u4e2a\u5355\u8bcd\u7ec4\u6210\u7684\u547d\u4ee4\u4e0d\u9700\u8981\u52a0\u5f15\u53f7\u3002\u56e0\u6b64\uff0c\u53ef\u4ee5\u76f4\u63a5\u8f93\u5165 \\help alter table \u3002", "description_zh_html": "<p>psql \u547d\u4ee4 \\h or \\help [ command ]\u3002</p><h3>\u540c\u7248\u672c\u4e2d\u6587\u624b\u518c\u5b9a\u4e49</h3><dd><p>\n        \u7ed9\u51fa\u6307\u5b9a <acronym class=\"acronym\">SQL</acronym> \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\u5982\u679c\u672a\u6307\u5b9a <em class=\"replaceable\"><code>command</code></em>\uff0c\u5219 <span class=\"application\">psql</span> \u5c06\u5217\u51fa\u6240\u6709\u53ef\u7528\u8bed\u6cd5\u5e2e\u52a9\u7684\u547d\u4ee4\u3002\u5982\u679c <em class=\"replaceable\"><code>command</code></em> \u662f\u661f\u53f7\uff08<code class=\"literal\">*</code>\uff09\uff0c\u5219\u663e\u793a\u6240\u6709 <acronym class=\"acronym\">SQL</acronym> \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\n        </p><p>\n        \u4e0e\u5927\u591a\u6570\u5176\u4ed6\u5143\u547d\u4ee4\u4e0d\u540c\uff0c\u6574\u4e2a\u884c\u7684\u5269\u4f59\u90e8\u5206\u59cb\u7ec8\u88ab\u89c6\u4e3a<code class=\"command\">\\help</code> \u7684\u53c2\u6570\uff0c\u53c2\u6570\u4e2d\u4e0d\u8fdb\u884c\u53d8\u91cf\u63d2\u503c\u6216\u53cd\u5f15\u53f7\u6269\u5c55\u3002\n        </p><div class=\"note\"><h3 class=\"title\">\u6ce8\u610f</h3><p>\n        \u4e3a\u4e86\u7b80\u5316\u8f93\u5165\uff0c\u7531\u591a\u4e2a\u5355\u8bcd\u7ec4\u6210\u7684\u547d\u4ee4\u4e0d\u9700\u8981\u52a0\u5f15\u53f7\u3002\u56e0\u6b64\uff0c\u53ef\u4ee5\u76f4\u63a5\u8f93\u5165<strong class=\"userinput\"><code>\\help alter table</code></strong>\u3002\n        </p></div></dd><p><a href=\"/zh/docs/11/app-psql.html#APP-PSQL-META-COMMANDS\">\u67e5\u770b\u5b8c\u6574\u4e2d\u6587\u624b\u518c\u4e0e\u4e0a\u4e0b\u6587</a>\u3002</p>"}, "summary": "\u7ed9\u51fa\u6307\u5b9a SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\u5982\u679c\u672a\u6307\u5b9a command \uff0c\u5219 psql \u5c06\u5217\u51fa\u6240\u6709\u53ef\u7528\u8bed\u6cd5\u5e2e\u52a9\u7684\u547d\u4ee4\u3002\u5982\u679c command \u662f\u661f\u53f7\uff08 * \uff09\uff0c\u5219\u663e\u793a\u6240\u6709 SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002 \u4e0e\u5927\u591a\u6570\u5176\u4ed6\u5143\u547d\u4ee4\u4e0d\u540c\uff0c\u6574\u4e2a\u884c\u7684\u5269\u4f59\u90e8\u5206\u59cb\u7ec8\u88ab\u89c6\u4e3a \\help \u7684\u53c2\u6570\uff0c\u53c2\u6570\u4e2d\u4e0d\u8fdb\u884c\u53d8\u91cf\u63d2\u503c\u6216\u53cd\u5f15\u53f7\u6269\u5c55\u3002 \u6ce8\u610f \u4e3a\u4e86\u7b80\u5316\u8f93\u5165\uff0c\u7531\u591a\u4e2a\u5355\u8bcd\u7ec4\u6210\u7684\u547d\u4ee4\u4e0d\u9700\u8981\u52a0\u5f15\u53f7\u3002\u56e0\u6b64\uff0c\u53ef\u4ee5\u76f4\u63a5\u8f93\u5165 \\help alter table \u3002", "version": "11", "link_map": {"/zh/docs/11/app-psql.html#APP-PSQL-META-COMMANDS": "/docs/11/app-psql.html#APP-PSQL-META-COMMANDS"}, "body_html": "<p>psql \u547d\u4ee4 \\h or \\help [ command ]\u3002</p><h3>\u540c\u7248\u672c\u4e2d\u6587\u624b\u518c\u5b9a\u4e49</h3><dd><p>\n        \u7ed9\u51fa\u6307\u5b9a <acronym>SQL</acronym> \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\u5982\u679c\u672a\u6307\u5b9a <em><code>command</code></em>\uff0c\u5219 <span>psql</span> \u5c06\u5217\u51fa\u6240\u6709\u53ef\u7528\u8bed\u6cd5\u5e2e\u52a9\u7684\u547d\u4ee4\u3002\u5982\u679c <em><code>command</code></em> \u662f\u661f\u53f7\uff08<code>*</code>\uff09\uff0c\u5219\u663e\u793a\u6240\u6709 <acronym>SQL</acronym> \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\n        </p><p>\n        \u4e0e\u5927\u591a\u6570\u5176\u4ed6\u5143\u547d\u4ee4\u4e0d\u540c\uff0c\u6574\u4e2a\u884c\u7684\u5269\u4f59\u90e8\u5206\u59cb\u7ec8\u88ab\u89c6\u4e3a<code>\\help</code> \u7684\u53c2\u6570\uff0c\u53c2\u6570\u4e2d\u4e0d\u8fdb\u884c\u53d8\u91cf\u63d2\u503c\u6216\u53cd\u5f15\u53f7\u6269\u5c55\u3002\n        </p><div><h3>\u6ce8\u610f</h3><p>\n        \u4e3a\u4e86\u7b80\u5316\u8f93\u5165\uff0c\u7531\u591a\u4e2a\u5355\u8bcd\u7ec4\u6210\u7684\u547d\u4ee4\u4e0d\u9700\u8981\u52a0\u5f15\u53f7\u3002\u56e0\u6b64\uff0c\u53ef\u4ee5\u76f4\u63a5\u8f93\u5165<strong><code>\\help alter table</code></strong>\u3002\n        </p></div></dd><p><a href=\"/zh/docs/11/app-psql.html#APP-PSQL-META-COMMANDS\" rel=\"nofollow\">\u67e5\u770b\u5b8c\u6574\u4e2d\u6587\u624b\u518c\u4e0e\u4e0a\u4e0b\u6587</a>\u3002</p>", "body_sha256": "c7996dbacdc90e0ad63c0cc4839a599c791e78df4fbe8edf59e64a49f335006a", "content_hash": "7ae64f68ad47f6c67375adb92ca1ed025487e54bd3ab83609903fdc8bc97d40d", "source_database": "center", "source_revision": "53315ddaf3b3f9e6669fd1edc096bbb2cd4a65ea3e836c89e542b43af9ba3a7f"}, "modifiers": [], "signature": "\\h or \\help [ command ]", "spellings": ["\\h", "\\help"], "tables_zh": [{"key": "spellings", "rows": [{"command": {"url": "/wiki/psql/cmd-68/?v=11", "text": "\\h"}, "modifiers": "\u6b64\u8bed\u6cd5\u7b7e\u540d\u672a\u5217\u51fa"}, {"command": {"url": "/wiki/psql/cmd-68-65-6c-70/?v=11", "text": "\\help"}, "modifiers": "\u6b64\u8bed\u6cd5\u7b7e\u540d\u672a\u5217\u51fa"}], "title": "\u672c\u7248\u624b\u518c\u4e2d\u7684\u5199\u6cd5", "columns": [{"key": "command", "label": "\u547d\u4ee4"}, {"key": "modifiers", "label": "\u624b\u518c\u4e2d\u7684\u540e\u7f00\u4fee\u9970\u7b26"}]}], "description": ["\u7ed9\u51fa\u6307\u5b9a SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\u5982\u679c\u672a\u6307\u5b9a command \uff0c\u5219 psql \u5c06\u5217\u51fa\u6240\u6709\u53ef\u7528\u8bed\u6cd5\u5e2e\u52a9\u7684\u547d\u4ee4\u3002\u5982\u679c command \u662f\u661f\u53f7\uff08 * \uff09\uff0c\u5219\u663e\u793a\u6240\u6709 SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002 \u4e0e\u5927\u591a\u6570\u5176\u4ed6\u5143\u547d\u4ee4\u4e0d\u540c\uff0c\u6574\u4e2a\u884c\u7684\u5269\u4f59\u90e8\u5206\u59cb\u7ec8\u88ab\u89c6\u4e3a \\help \u7684\u53c2\u6570\uff0c\u53c2\u6570\u4e2d\u4e0d\u8fdb\u884c\u53d8\u91cf\u63d2\u503c\u6216\u53cd\u5f15\u53f7\u6269\u5c55\u3002 \u6ce8\u610f \u4e3a\u4e86\u7b80\u5316\u8f93\u5165\uff0c\u7531\u591a\u4e2a\u5355\u8bcd\u7ec4\u6210\u7684\u547d\u4ee4\u4e0d\u9700\u8981\u52a0\u5f15\u53f7\u3002\u56e0\u6b64\uff0c\u53ef\u4ee5\u76f4\u63a5\u8f93\u5165 \\help alter table \u3002"], "manual_html": "", "manual_path": "app-psql.html#APP-PSQL-META-COMMANDS", "sections_zh": [], "localization": {"status": "complete", "sources": [{"url": "/docs/11/app-psql.html", "method": "same-major semantic node", "sha256": "01339254dd1dc30d095af846d0b6a7c01f96338187a6fbb8cf45290d5941196b", "language": "zh", "matched_nodes": ["#APP-PSQL/div[5]/div[1]/dl[0]/dd[41]/div[1]/h3[0]", "#APP-PSQL/div[7]/div[3]/div[10]/dl[0]/dd[107]/div[2]/p[1]", "#APP-PSQL/div[7]/div[3]/div[10]/dl[0]/dd[107]/p[0]", "#APP-PSQL/div[7]/div[3]/div[10]/dl[0]/dd[107]/p[1]", "#APP-PSQL/div[7]/div[3]/div[10]/dl[0]/dt[106]"]}], "language": "zh", "original_text": {"/versions/11/description/0": "Gives syntax help on the specified SQL command. If command is not specified, then psql will list all the commands for which syntax help is available. If command is an asterisk ( * ), then syntax help on all SQL commands is shown.", "/versions/11/facts/0/label": "Client", "/versions/11/facts/1/label": "Case-sensitive spelling", "/versions/11/tables/0/title": "Spellings in this manual definition", "/versions/11/related/1/label": "psql command-line options and complete manual", "/versions/11/tables/0/columns/0/label": "Command", "/versions/11/tables/0/columns/1/label": "Documented suffix modifiers", "/versions/11/tables/0/rows/0/modifiers": "None listed in this signature", "/versions/11/tables/0/rows/1/modifiers": "None listed in this signature"}, "fallback_fields": [], "source_language": "en", "original_snapshot_sha256": "7d082d74f0fd4a4808a869af075f92495c434ead501d97c70761491ff7cb8f74", "canonical_center_text_hash": "7ae64f68ad47f6c67375adb92ca1ed025487e54bd3ab83609903fdc8bc97d40d"}, "description_zh": "\u7ed9\u51fa\u6307\u5b9a SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\u5982\u679c\u672a\u6307\u5b9a command \uff0c\u5219 psql \u5c06\u5217\u51fa\u6240\u6709\u53ef\u7528\u8bed\u6cd5\u5e2e\u52a9\u7684\u547d\u4ee4\u3002\u5982\u679c command \u662f\u661f\u53f7\uff08 * \uff09\uff0c\u5219\u663e\u793a\u6240\u6709 SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002 \u4e0e\u5927\u591a\u6570\u5176\u4ed6\u5143\u547d\u4ee4\u4e0d\u540c\uff0c\u6574\u4e2a\u884c\u7684\u5269\u4f59\u90e8\u5206\u59cb\u7ec8\u88ab\u89c6\u4e3a \\help \u7684\u53c2\u6570\uff0c\u53c2\u6570\u4e2d\u4e0d\u8fdb\u884c\u53d8\u91cf\u63d2\u503c\u6216\u53cd\u5f15\u53f7\u6269\u5c55\u3002 \u6ce8\u610f \u4e3a\u4e86\u7b80\u5316\u8f93\u5165\uff0c\u7531\u591a\u4e2a\u5355\u8bcd\u7ec4\u6210\u7684\u547d\u4ee4\u4e0d\u9700\u8981\u52a0\u5f15\u53f7\u3002\u56e0\u6b64\uff0c\u53ef\u4ee5\u76f4\u63a5\u8f93\u5165 \\help alter table \u3002", "comparison_data": {"modifiers": [], "signature": "\\h or \\help [ command ]", "spellings": ["\\h", "\\help"], "definition": "Gives syntax help on the specified SQL command. If command is not specified, then psql will list all the commands for which syntax help is available. If command is an asterisk ( * ), then syntax help on all SQL commands is shown. Unlike most other meta-commands, the entire remainder of the line is always taken to be the argument(s) of \\help , and neither variable interpolation nor backquote expansion are performed in the arguments. Note To simplify typing, commands that consists of several words do not have to be quoted. Thus it is fine to type \\help alter table ."}, "comparison_hash": "b577574b2085fe90e006df02a39f4541a330b0431267a9fe13837edb82fa8cd5", "manual_language": "zh", "description_zh_html": "<p>psql \u547d\u4ee4 \\h or \\help [ command ]\u3002</p><h3>\u540c\u7248\u672c\u4e2d\u6587\u624b\u518c\u5b9a\u4e49</h3><dd><p>\n        \u7ed9\u51fa\u6307\u5b9a <acronym>SQL</acronym> \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\u5982\u679c\u672a\u6307\u5b9a <em><code>command</code></em>\uff0c\u5219 <span>psql</span> \u5c06\u5217\u51fa\u6240\u6709\u53ef\u7528\u8bed\u6cd5\u5e2e\u52a9\u7684\u547d\u4ee4\u3002\u5982\u679c <em><code>command</code></em> \u662f\u661f\u53f7\uff08<code>*</code>\uff09\uff0c\u5219\u663e\u793a\u6240\u6709 <acronym>SQL</acronym> \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\n        </p><p>\n        \u4e0e\u5927\u591a\u6570\u5176\u4ed6\u5143\u547d\u4ee4\u4e0d\u540c\uff0c\u6574\u4e2a\u884c\u7684\u5269\u4f59\u90e8\u5206\u59cb\u7ec8\u88ab\u89c6\u4e3a<code>\\help</code> \u7684\u53c2\u6570\uff0c\u53c2\u6570\u4e2d\u4e0d\u8fdb\u884c\u53d8\u91cf\u63d2\u503c\u6216\u53cd\u5f15\u53f7\u6269\u5c55\u3002\n        </p><div><h3>\u6ce8\u610f</h3><p>\n        \u4e3a\u4e86\u7b80\u5316\u8f93\u5165\uff0c\u7531\u591a\u4e2a\u5355\u8bcd\u7ec4\u6210\u7684\u547d\u4ee4\u4e0d\u9700\u8981\u52a0\u5f15\u53f7\u3002\u56e0\u6b64\uff0c\u53ef\u4ee5\u76f4\u63a5\u8f93\u5165<strong><code>\\help alter table</code></strong>\u3002\n        </p></div></dd><p><a href=\"/zh/docs/11/app-psql.html#APP-PSQL-META-COMMANDS\" rel=\"nofollow\">\u67e5\u770b\u5b8c\u6574\u4e2d\u6587\u624b\u518c\u4e0e\u4e0a\u4e0b\u6587</a>\u3002</p>"}, "12": {"facts": [{"label": "\u5ba2\u6237\u7aef", "value": "psql 12.22"}, {"label": "\u533a\u5206\u5927\u5c0f\u5199\u7684\u5199\u6cd5", "value": "\\help"}], "tables": [{"key": "spellings", "rows": [{"command": {"url": "/wiki/psql/cmd-68/?v=12", "text": "\\h"}, "modifiers": "\u6b64\u8bed\u6cd5\u7b7e\u540d\u672a\u5217\u51fa"}, {"command": {"url": "/wiki/psql/cmd-68-65-6c-70/?v=12", "text": "\\help"}, "modifiers": "\u6b64\u8bed\u6cd5\u7b7e\u540d\u672a\u5217\u51fa"}], "title": "\u672c\u7248\u624b\u518c\u4e2d\u7684\u5199\u6cd5", "columns": [{"key": "command", "label": "\u547d\u4ee4"}, {"key": "modifiers", "label": "\u624b\u518c\u4e2d\u7684\u540e\u7f00\u4fee\u9970\u7b26"}]}], "command": "\\help", "related": [{"url": "/wiki/psql/cmd-68/?v=12", "label": "\\h"}, {"url": "/wiki/tool/psql/?v=12", "label": "psql \u547d\u4ee4\u884c\u9009\u9879\u53ca\u5b8c\u6574\u624b\u518c"}], "release": {"ref": "https://ftp.postgresql.org/pub/source/v12.22/postgresql-12.22.tar.bz2", "label": "12.22", "major": "12", "channel": "historical", "manifest": {"pdf": {"A4": {"url": "/files/documentation/pdf/12/postgresql-12-A4.pdf", "bytes": 13424351, "pages": 2803, "sha256": "7422cf53fd1939e7a3d2925231a88b0330e468afa5393627cac0ff86158a0621", "built_at": "2026-09-26"}, "US": {"url": "/files/documentation/pdf/12/postgresql-12-US.pdf", "bytes": 13322565, "pages": 2958, "sha256": "51f3b04e72907fc38512685946223452ea65f84419c60c66241dfa3396035e77", "built_at": "2026-09-26"}}, "tree": "12", "index": "index.html", "major": "12", "pages": 1131, "release": "12.22", "source_url": "https://ftp.postgresql.org/pub/source/v12.22/postgresql-12.22.tar.bz2", "svg_assets": 2, "source_mode": "en HTML verified against the pinned official archive", "source_sha256": "8df3c0474782589d3c6f374b5133b1bd14d168086edbc13c6e72e67dd4527a3b"}, "revision": "7a827e97cbfacd7febff75f34443e2043e40723de5b6d8c9d81a9430b65a37e4", "evidence_kind": "English manual and source declarations", "source_sha256": "8df3c0474782589d3c6f374b5133b1bd14d168086edbc13c6e72e67dd4527a3b"}, "sources": [{"url": "/docs/12/app-psql.html#APP-PSQL-META-COMMANDS", "file": "app-psql.html", "label": "12.22 English manual \u00b7 app-psql.html", "anchor": "APP-PSQL-META-COMMANDS", "sha256": "a5cec5a456a98610e98d1f1959d96ce57c8413bb392f0f5d6720fc561bb63627"}], "zh_from": {"kind": "same-version-chinese-manual-with-source-derived-identity", "manual": {"url": "/zh/docs/12/app-psql.html#APP-PSQL-META-COMMANDS", "anchor": "APP-PSQL-META-COMMANDS", "locale": "zh-Hans", "version": "12", "build_id": 65, "page_key": "app-psql.html", "extraction": "exact-definition", "source_hash": "8036faa7b026a8cae7af58d1fc5d09a60491dbad5f0fdada98b4bddf617018e4", "fragment_sha256": "55e9d0e1a8907aaef85246c07fe378bf6ab581bd718b91e27a09cd1124898d27", "source_revision": "unknown:rendered-translation-baseline", "translation_revision": "snapshot:sha256:86d2ff781f93e1de17122ebc514d5e64fcb63fed15941f496d7e146c6dcc7a49", "translated_from_revision": null}, "body_sha256": "0c52bd1e019e46b1c3c596154d70f4f70bdbeb501bc75f3b7e427968d4e14c75", "runtime_rerun": false, "authored_translation": "source-derived-identity", "source_facts_revision": "7a827e97cbfacd7febff75f34443e2043e40723de5b6d8c9d81a9430b65a37e4"}, "facts_zh": [{"label": "\u5ba2\u6237\u7aef", "value": "psql 12.22"}, {"label": "\u533a\u5206\u5927\u5c0f\u5199\u7684\u5199\u6cd5", "value": "\\help"}], "sections": [], "center_zh": {"title": "\\help", "locale": "zh-Hans", "source": {"key": "cmd-68-65-6c-70", "locale": "zh-Hans", "version": "12", "text_hash": "040f068f744a2e6c49556bb7faf614dae388a32de8c911e05588b266a4c7741b", "collection": "psql", "dataset_hash": "7c31b524dfe136022d39a6ae8dcfac6b3bbd5f8fdaf422536599981252aff0c9", "source_database": "center", "source_revision": "7a827e97cbfacd7febff75f34443e2043e40723de5b6d8c9d81a9430b65a37e4"}, "payload": {"facts": [{"label": "\u5ba2\u6237\u7aef", "value": "psql 12.22"}, {"label": "\u533a\u5206\u5927\u5c0f\u5199\u7684\u5199\u6cd5", "value": "\\help"}], "tables": [{"key": "spellings", "rows": [{"command": {"url": "/wiki/psql/cmd-68/?v=12", "text": "\\h"}, "modifiers": "\u6b64\u8bed\u6cd5\u7b7e\u540d\u672a\u5217\u51fa"}, {"command": {"url": "/wiki/psql/cmd-68-65-6c-70/?v=12", "text": "\\help"}, "modifiers": "\u6b64\u8bed\u6cd5\u7b7e\u540d\u672a\u5217\u51fa"}], "title": "\u672c\u7248\u624b\u518c\u4e2d\u7684\u5199\u6cd5", "columns": [{"key": "command", "label": "\u547d\u4ee4"}, {"key": "modifiers", "label": "\u624b\u518c\u4e2d\u7684\u540e\u7f00\u4fee\u9970\u7b26"}]}], "zh_from": {"kind": "same-version-chinese-manual-with-source-derived-identity", "manual": {"url": "/zh/docs/12/app-psql.html#APP-PSQL-META-COMMANDS", "anchor": "APP-PSQL-META-COMMANDS", "locale": "zh-Hans", "version": "12", "build_id": 65, "page_key": "app-psql.html", "extraction": "exact-definition", "source_hash": "8036faa7b026a8cae7af58d1fc5d09a60491dbad5f0fdada98b4bddf617018e4", "fragment_sha256": "55e9d0e1a8907aaef85246c07fe378bf6ab581bd718b91e27a09cd1124898d27", "source_revision": "unknown:rendered-translation-baseline", "translation_revision": "snapshot:sha256:86d2ff781f93e1de17122ebc514d5e64fcb63fed15941f496d7e146c6dcc7a49", "translated_from_revision": null}, "body_sha256": "0c52bd1e019e46b1c3c596154d70f4f70bdbeb501bc75f3b7e427968d4e14c75", "runtime_rerun": false, "authored_translation": "source-derived-identity", "source_facts_revision": "7a827e97cbfacd7febff75f34443e2043e40723de5b6d8c9d81a9430b65a37e4"}, "sections": [], "description_zh": "\u7ed9\u51fa\u6307\u5b9a SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\u5982\u679c\u672a\u6307\u5b9a command \uff0c\u5219 psql \u5c06\u5217\u51fa\u6240\u6709\u53ef\u7528\u8bed\u6cd5\u5e2e\u52a9\u7684\u547d\u4ee4\u3002\u5982\u679c command \u662f\u661f\u53f7\uff08 * \uff09\uff0c\u5219\u663e\u793a\u6240\u6709 SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002 \u4e0e\u5927\u591a\u6570\u5176\u4ed6\u5143\u547d\u4ee4\u4e0d\u540c\uff0c\u6574\u4e2a\u884c\u7684\u5269\u4f59\u90e8\u5206\u59cb\u7ec8\u88ab\u89c6\u4e3a \\help \u7684\u53c2\u6570\uff0c\u53c2\u6570\u4e2d\u4e0d\u8fdb\u884c\u53d8\u91cf\u63d2\u503c\u6216\u53cd\u5f15\u53f7\u6269\u5c55\u3002 \u6ce8\u610f \u4e3a\u4e86\u7b80\u5316\u8f93\u5165\uff0c\u7531\u591a\u4e2a\u5355\u8bcd\u7ec4\u6210\u7684\u547d\u4ee4\u4e0d\u9700\u8981\u52a0\u5f15\u53f7\u3002\u56e0\u6b64\uff0c\u53ef\u4ee5\u76f4\u63a5\u8f93\u5165 \\help alter table \u3002", "description_zh_html": "<p>psql \u547d\u4ee4 \\h or \\help [ command ]\u3002</p><h3>\u540c\u7248\u672c\u4e2d\u6587\u624b\u518c\u5b9a\u4e49</h3><dd><p>\n        \u7ed9\u51fa\u6307\u5b9a <acronym class=\"acronym\">SQL</acronym> \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\u5982\u679c\u672a\u6307\u5b9a <em class=\"replaceable\"><code>command</code></em>\uff0c\u5219 <span class=\"application\">psql</span> \u5c06\u5217\u51fa\u6240\u6709\u53ef\u7528\u8bed\u6cd5\u5e2e\u52a9\u7684\u547d\u4ee4\u3002\u5982\u679c <em class=\"replaceable\"><code>command</code></em> \u662f\u661f\u53f7\uff08<code class=\"literal\">*</code>\uff09\uff0c\u5219\u663e\u793a\u6240\u6709 <acronym class=\"acronym\">SQL</acronym> \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\n        </p><p>\n        \u4e0e\u5927\u591a\u6570\u5176\u4ed6\u5143\u547d\u4ee4\u4e0d\u540c\uff0c\u6574\u4e2a\u884c\u7684\u5269\u4f59\u90e8\u5206\u59cb\u7ec8\u88ab\u89c6\u4e3a<code class=\"command\">\\help</code> \u7684\u53c2\u6570\uff0c\u53c2\u6570\u4e2d\u4e0d\u8fdb\u884c\u53d8\u91cf\u63d2\u503c\u6216\u53cd\u5f15\u53f7\u6269\u5c55\u3002\n        </p><div class=\"note\"><h3 class=\"title\">\u6ce8\u610f</h3><p>\n        \u4e3a\u4e86\u7b80\u5316\u8f93\u5165\uff0c\u7531\u591a\u4e2a\u5355\u8bcd\u7ec4\u6210\u7684\u547d\u4ee4\u4e0d\u9700\u8981\u52a0\u5f15\u53f7\u3002\u56e0\u6b64\uff0c\u53ef\u4ee5\u76f4\u63a5\u8f93\u5165<strong class=\"userinput\"><code>\\help alter table</code></strong>\u3002\n        </p></div></dd><p><a href=\"/zh/docs/12/app-psql.html#APP-PSQL-META-COMMANDS\">\u67e5\u770b\u5b8c\u6574\u4e2d\u6587\u624b\u518c\u4e0e\u4e0a\u4e0b\u6587</a>\u3002</p>"}, "summary": "\u7ed9\u51fa\u6307\u5b9a SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\u5982\u679c\u672a\u6307\u5b9a command \uff0c\u5219 psql \u5c06\u5217\u51fa\u6240\u6709\u53ef\u7528\u8bed\u6cd5\u5e2e\u52a9\u7684\u547d\u4ee4\u3002\u5982\u679c command \u662f\u661f\u53f7\uff08 * \uff09\uff0c\u5219\u663e\u793a\u6240\u6709 SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002 \u4e0e\u5927\u591a\u6570\u5176\u4ed6\u5143\u547d\u4ee4\u4e0d\u540c\uff0c\u6574\u4e2a\u884c\u7684\u5269\u4f59\u90e8\u5206\u59cb\u7ec8\u88ab\u89c6\u4e3a \\help \u7684\u53c2\u6570\uff0c\u53c2\u6570\u4e2d\u4e0d\u8fdb\u884c\u53d8\u91cf\u63d2\u503c\u6216\u53cd\u5f15\u53f7\u6269\u5c55\u3002 \u6ce8\u610f \u4e3a\u4e86\u7b80\u5316\u8f93\u5165\uff0c\u7531\u591a\u4e2a\u5355\u8bcd\u7ec4\u6210\u7684\u547d\u4ee4\u4e0d\u9700\u8981\u52a0\u5f15\u53f7\u3002\u56e0\u6b64\uff0c\u53ef\u4ee5\u76f4\u63a5\u8f93\u5165 \\help alter table \u3002", "version": "12", "link_map": {"/zh/docs/12/app-psql.html#APP-PSQL-META-COMMANDS": "/docs/12/app-psql.html#APP-PSQL-META-COMMANDS"}, "body_html": "<p>psql \u547d\u4ee4 \\h or \\help [ command ]\u3002</p><h3>\u540c\u7248\u672c\u4e2d\u6587\u624b\u518c\u5b9a\u4e49</h3><dd><p>\n        \u7ed9\u51fa\u6307\u5b9a <acronym>SQL</acronym> \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\u5982\u679c\u672a\u6307\u5b9a <em><code>command</code></em>\uff0c\u5219 <span>psql</span> \u5c06\u5217\u51fa\u6240\u6709\u53ef\u7528\u8bed\u6cd5\u5e2e\u52a9\u7684\u547d\u4ee4\u3002\u5982\u679c <em><code>command</code></em> \u662f\u661f\u53f7\uff08<code>*</code>\uff09\uff0c\u5219\u663e\u793a\u6240\u6709 <acronym>SQL</acronym> \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\n        </p><p>\n        \u4e0e\u5927\u591a\u6570\u5176\u4ed6\u5143\u547d\u4ee4\u4e0d\u540c\uff0c\u6574\u4e2a\u884c\u7684\u5269\u4f59\u90e8\u5206\u59cb\u7ec8\u88ab\u89c6\u4e3a<code>\\help</code> \u7684\u53c2\u6570\uff0c\u53c2\u6570\u4e2d\u4e0d\u8fdb\u884c\u53d8\u91cf\u63d2\u503c\u6216\u53cd\u5f15\u53f7\u6269\u5c55\u3002\n        </p><div><h3>\u6ce8\u610f</h3><p>\n        \u4e3a\u4e86\u7b80\u5316\u8f93\u5165\uff0c\u7531\u591a\u4e2a\u5355\u8bcd\u7ec4\u6210\u7684\u547d\u4ee4\u4e0d\u9700\u8981\u52a0\u5f15\u53f7\u3002\u56e0\u6b64\uff0c\u53ef\u4ee5\u76f4\u63a5\u8f93\u5165<strong><code>\\help alter table</code></strong>\u3002\n        </p></div></dd><p><a href=\"/zh/docs/12/app-psql.html#APP-PSQL-META-COMMANDS\" rel=\"nofollow\">\u67e5\u770b\u5b8c\u6574\u4e2d\u6587\u624b\u518c\u4e0e\u4e0a\u4e0b\u6587</a>\u3002</p>", "body_sha256": "e4f5e0aebc57df5dee8755bc4370ddbf8b76221d23adb26f387fd4727cfdf088", "content_hash": "040f068f744a2e6c49556bb7faf614dae388a32de8c911e05588b266a4c7741b", "source_database": "center", "source_revision": "7a827e97cbfacd7febff75f34443e2043e40723de5b6d8c9d81a9430b65a37e4"}, "modifiers": [], "signature": "\\h or \\help [ command ]", "spellings": ["\\h", "\\help"], "tables_zh": [{"key": "spellings", "rows": [{"command": {"url": "/wiki/psql/cmd-68/?v=12", "text": "\\h"}, "modifiers": "\u6b64\u8bed\u6cd5\u7b7e\u540d\u672a\u5217\u51fa"}, {"command": {"url": "/wiki/psql/cmd-68-65-6c-70/?v=12", "text": "\\help"}, "modifiers": "\u6b64\u8bed\u6cd5\u7b7e\u540d\u672a\u5217\u51fa"}], "title": "\u672c\u7248\u624b\u518c\u4e2d\u7684\u5199\u6cd5", "columns": [{"key": "command", "label": "\u547d\u4ee4"}, {"key": "modifiers", "label": "\u624b\u518c\u4e2d\u7684\u540e\u7f00\u4fee\u9970\u7b26"}]}], "description": ["\u7ed9\u51fa\u6307\u5b9a SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\u5982\u679c\u672a\u6307\u5b9a command \uff0c\u5219 psql \u5c06\u5217\u51fa\u6240\u6709\u53ef\u7528\u8bed\u6cd5\u5e2e\u52a9\u7684\u547d\u4ee4\u3002\u5982\u679c command \u662f\u661f\u53f7\uff08 * \uff09\uff0c\u5219\u663e\u793a\u6240\u6709 SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002 \u4e0e\u5927\u591a\u6570\u5176\u4ed6\u5143\u547d\u4ee4\u4e0d\u540c\uff0c\u6574\u4e2a\u884c\u7684\u5269\u4f59\u90e8\u5206\u59cb\u7ec8\u88ab\u89c6\u4e3a \\help \u7684\u53c2\u6570\uff0c\u53c2\u6570\u4e2d\u4e0d\u8fdb\u884c\u53d8\u91cf\u63d2\u503c\u6216\u53cd\u5f15\u53f7\u6269\u5c55\u3002 \u6ce8\u610f \u4e3a\u4e86\u7b80\u5316\u8f93\u5165\uff0c\u7531\u591a\u4e2a\u5355\u8bcd\u7ec4\u6210\u7684\u547d\u4ee4\u4e0d\u9700\u8981\u52a0\u5f15\u53f7\u3002\u56e0\u6b64\uff0c\u53ef\u4ee5\u76f4\u63a5\u8f93\u5165 \\help alter table \u3002"], "manual_html": "", "manual_path": "app-psql.html#APP-PSQL-META-COMMANDS", "sections_zh": [], "localization": {"status": "complete", "sources": [{"url": "/docs/12/app-psql.html", "method": "same-major semantic node", "sha256": "1eb88d17f6ce811d722e5c4ed036f78a7872bf88410c08db794c428e3cfc98ce", "language": "zh", "matched_nodes": ["#APP-PSQL/div[5]/div[1]/dl[0]/dd[43]/div[1]/h3[0]", "#APP-PSQL/div[7]/div[3]/div[10]/dl[0]/dd[109]/div[2]/p[1]", "#APP-PSQL/div[7]/div[3]/div[10]/dl[0]/dd[109]/p[0]", "#APP-PSQL/div[7]/div[3]/div[10]/dl[0]/dd[109]/p[1]", "#APP-PSQL/div[7]/div[3]/div[10]/dl[0]/dt[108]"]}], "language": "zh", "original_text": {"/versions/12/description/0": "Gives syntax help on the specified SQL command. If command is not specified, then psql will list all the commands for which syntax help is available. If command is an asterisk ( * ), then syntax help on all SQL commands is shown.", "/versions/12/facts/0/label": "Client", "/versions/12/facts/1/label": "Case-sensitive spelling", "/versions/12/tables/0/title": "Spellings in this manual definition", "/versions/12/related/1/label": "psql command-line options and complete manual", "/versions/12/tables/0/columns/0/label": "Command", "/versions/12/tables/0/columns/1/label": "Documented suffix modifiers", "/versions/12/tables/0/rows/0/modifiers": "None listed in this signature", "/versions/12/tables/0/rows/1/modifiers": "None listed in this signature"}, "fallback_fields": [], "source_language": "en", "original_snapshot_sha256": "42f7dcdb6999549bbe693dbb131922b761219f9b970a9de087c1b1f5bc5e4edd", "canonical_center_text_hash": "040f068f744a2e6c49556bb7faf614dae388a32de8c911e05588b266a4c7741b"}, "description_zh": "\u7ed9\u51fa\u6307\u5b9a SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\u5982\u679c\u672a\u6307\u5b9a command \uff0c\u5219 psql \u5c06\u5217\u51fa\u6240\u6709\u53ef\u7528\u8bed\u6cd5\u5e2e\u52a9\u7684\u547d\u4ee4\u3002\u5982\u679c command \u662f\u661f\u53f7\uff08 * \uff09\uff0c\u5219\u663e\u793a\u6240\u6709 SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002 \u4e0e\u5927\u591a\u6570\u5176\u4ed6\u5143\u547d\u4ee4\u4e0d\u540c\uff0c\u6574\u4e2a\u884c\u7684\u5269\u4f59\u90e8\u5206\u59cb\u7ec8\u88ab\u89c6\u4e3a \\help \u7684\u53c2\u6570\uff0c\u53c2\u6570\u4e2d\u4e0d\u8fdb\u884c\u53d8\u91cf\u63d2\u503c\u6216\u53cd\u5f15\u53f7\u6269\u5c55\u3002 \u6ce8\u610f \u4e3a\u4e86\u7b80\u5316\u8f93\u5165\uff0c\u7531\u591a\u4e2a\u5355\u8bcd\u7ec4\u6210\u7684\u547d\u4ee4\u4e0d\u9700\u8981\u52a0\u5f15\u53f7\u3002\u56e0\u6b64\uff0c\u53ef\u4ee5\u76f4\u63a5\u8f93\u5165 \\help alter table \u3002", "comparison_data": {"modifiers": [], "signature": "\\h or \\help [ command ]", "spellings": ["\\h", "\\help"], "definition": "Gives syntax help on the specified SQL command. If command is not specified, then psql will list all the commands for which syntax help is available. If command is an asterisk ( * ), then syntax help on all SQL commands is shown. Unlike most other meta-commands, the entire remainder of the line is always taken to be the argument(s) of \\help , and neither variable interpolation nor backquote expansion are performed in the arguments. Note To simplify typing, commands that consists of several words do not have to be quoted. Thus it is fine to type \\help alter table ."}, "comparison_hash": "b577574b2085fe90e006df02a39f4541a330b0431267a9fe13837edb82fa8cd5", "manual_language": "zh", "description_zh_html": "<p>psql \u547d\u4ee4 \\h or \\help [ command ]\u3002</p><h3>\u540c\u7248\u672c\u4e2d\u6587\u624b\u518c\u5b9a\u4e49</h3><dd><p>\n        \u7ed9\u51fa\u6307\u5b9a <acronym>SQL</acronym> \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\u5982\u679c\u672a\u6307\u5b9a <em><code>command</code></em>\uff0c\u5219 <span>psql</span> \u5c06\u5217\u51fa\u6240\u6709\u53ef\u7528\u8bed\u6cd5\u5e2e\u52a9\u7684\u547d\u4ee4\u3002\u5982\u679c <em><code>command</code></em> \u662f\u661f\u53f7\uff08<code>*</code>\uff09\uff0c\u5219\u663e\u793a\u6240\u6709 <acronym>SQL</acronym> \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\n        </p><p>\n        \u4e0e\u5927\u591a\u6570\u5176\u4ed6\u5143\u547d\u4ee4\u4e0d\u540c\uff0c\u6574\u4e2a\u884c\u7684\u5269\u4f59\u90e8\u5206\u59cb\u7ec8\u88ab\u89c6\u4e3a<code>\\help</code> \u7684\u53c2\u6570\uff0c\u53c2\u6570\u4e2d\u4e0d\u8fdb\u884c\u53d8\u91cf\u63d2\u503c\u6216\u53cd\u5f15\u53f7\u6269\u5c55\u3002\n        </p><div><h3>\u6ce8\u610f</h3><p>\n        \u4e3a\u4e86\u7b80\u5316\u8f93\u5165\uff0c\u7531\u591a\u4e2a\u5355\u8bcd\u7ec4\u6210\u7684\u547d\u4ee4\u4e0d\u9700\u8981\u52a0\u5f15\u53f7\u3002\u56e0\u6b64\uff0c\u53ef\u4ee5\u76f4\u63a5\u8f93\u5165<strong><code>\\help alter table</code></strong>\u3002\n        </p></div></dd><p><a href=\"/zh/docs/12/app-psql.html#APP-PSQL-META-COMMANDS\" rel=\"nofollow\">\u67e5\u770b\u5b8c\u6574\u4e2d\u6587\u624b\u518c\u4e0e\u4e0a\u4e0b\u6587</a>\u3002</p>"}, "13": {"facts": [{"label": "\u5ba2\u6237\u7aef", "value": "psql 13.23"}, {"label": "\u533a\u5206\u5927\u5c0f\u5199\u7684\u5199\u6cd5", "value": "\\help"}], "tables": [{"key": "spellings", "rows": [{"command": {"url": "/wiki/psql/cmd-68/?v=13", "text": "\\h"}, "modifiers": "\u6b64\u8bed\u6cd5\u7b7e\u540d\u672a\u5217\u51fa"}, {"command": {"url": "/wiki/psql/cmd-68-65-6c-70/?v=13", "text": "\\help"}, "modifiers": "\u6b64\u8bed\u6cd5\u7b7e\u540d\u672a\u5217\u51fa"}], "title": "\u672c\u7248\u624b\u518c\u4e2d\u7684\u5199\u6cd5", "columns": [{"key": "command", "label": "\u547d\u4ee4"}, {"key": "modifiers", "label": "\u624b\u518c\u4e2d\u7684\u540e\u7f00\u4fee\u9970\u7b26"}]}], "command": "\\help", "related": [{"url": "/wiki/psql/cmd-68/?v=13", "label": "\\h"}, {"url": "/wiki/tool/psql/?v=13", "label": "psql \u547d\u4ee4\u884c\u9009\u9879\u53ca\u5b8c\u6574\u624b\u518c"}], "release": {"ref": "https://ftp.postgresql.org/pub/source/v13.23/postgresql-13.23.tar.bz2", "label": "13.23", "major": "13", "channel": "historical", "manifest": {"pdf": {"A4": {"url": "/files/documentation/pdf/13/postgresql-13-A4.pdf", "bytes": 13843239, "pages": 2826, "sha256": "171cc09f90936dbc1cbd503a98ff07ae72ea58ab9771ff051313f1217737799c", "built_at": "2026-09-26"}, "US": {"url": "/files/documentation/pdf/13/postgresql-13-US.pdf", "bytes": 13739572, "pages": 2984, "sha256": "48d09c6e197d9db4220f41afe83efe848a8661b1b168d3b89419751ecaf6c24d", "built_at": "2026-09-26"}}, "tree": "13", "index": "index.html", "major": "13", "pages": 1139, "release": "13.23", "source_url": "https://ftp.postgresql.org/pub/source/v13.23/postgresql-13.23.tar.bz2", "svg_assets": 3, "source_mode": "en HTML verified against the pinned official archive", "source_sha256": "6ec3c82726af92b7dec873fa1cdf881eca92a4219787dfad05acb6b10e041fd6"}, "revision": "614ee3133270254e476c118cdf6f72af78d4e4b8bbd9b28ed9ab1e14e4e9c0f6", "evidence_kind": "English manual and source declarations", "source_sha256": "6ec3c82726af92b7dec873fa1cdf881eca92a4219787dfad05acb6b10e041fd6"}, "sources": [{"url": "/docs/13/app-psql.html#APP-PSQL-META-COMMANDS", "file": "app-psql.html", "label": "13.23 English manual \u00b7 app-psql.html", "anchor": "APP-PSQL-META-COMMANDS", "sha256": "30347083b7a58da020d968643e2479d2dfb534191d4493d454603ca53db151b0"}], "zh_from": {"kind": "same-version-chinese-manual-with-source-derived-identity", "manual": {"url": "/zh/docs/13/app-psql.html#APP-PSQL-META-COMMANDS", "anchor": "APP-PSQL-META-COMMANDS", "locale": "zh-Hans", "version": "13", "build_id": 66, "page_key": "app-psql.html", "extraction": "exact-definition", "source_hash": "a5500221235ed19029b98fb69f0d6465a7bf1d0939420838c240c2cd53b2eca3", "fragment_sha256": "55e9d0e1a8907aaef85246c07fe378bf6ab581bd718b91e27a09cd1124898d27", "source_revision": "unknown:rendered-translation-baseline", "translation_revision": "snapshot:sha256:a13a825c39f0268ef1cfe9137e283e38d0da73b2d7894f0733c7b26372a4f6a4", "translated_from_revision": null}, "body_sha256": "c5569a2f4851a8659be6303590b69b67ecda9ece8f67fece149145f8be0b855f", "runtime_rerun": false, "authored_translation": "source-derived-identity", "source_facts_revision": "614ee3133270254e476c118cdf6f72af78d4e4b8bbd9b28ed9ab1e14e4e9c0f6"}, "facts_zh": [{"label": "\u5ba2\u6237\u7aef", "value": "psql 13.23"}, {"label": "\u533a\u5206\u5927\u5c0f\u5199\u7684\u5199\u6cd5", "value": "\\help"}], "sections": [], "center_zh": {"title": "\\help", "locale": "zh-Hans", "source": {"key": "cmd-68-65-6c-70", "locale": "zh-Hans", "version": "13", "text_hash": "cb75268e18b2d81ead2dc3cf5ff00e6aaeb7b0adf5844f6d4776bafac1e59796", "collection": "psql", "dataset_hash": "7c31b524dfe136022d39a6ae8dcfac6b3bbd5f8fdaf422536599981252aff0c9", "source_database": "center", "source_revision": "614ee3133270254e476c118cdf6f72af78d4e4b8bbd9b28ed9ab1e14e4e9c0f6"}, "payload": {"facts": [{"label": "\u5ba2\u6237\u7aef", "value": "psql 13.23"}, {"label": "\u533a\u5206\u5927\u5c0f\u5199\u7684\u5199\u6cd5", "value": "\\help"}], "tables": [{"key": "spellings", "rows": [{"command": {"url": "/wiki/psql/cmd-68/?v=13", "text": "\\h"}, "modifiers": "\u6b64\u8bed\u6cd5\u7b7e\u540d\u672a\u5217\u51fa"}, {"command": {"url": "/wiki/psql/cmd-68-65-6c-70/?v=13", "text": "\\help"}, "modifiers": "\u6b64\u8bed\u6cd5\u7b7e\u540d\u672a\u5217\u51fa"}], "title": "\u672c\u7248\u624b\u518c\u4e2d\u7684\u5199\u6cd5", "columns": [{"key": "command", "label": "\u547d\u4ee4"}, {"key": "modifiers", "label": "\u624b\u518c\u4e2d\u7684\u540e\u7f00\u4fee\u9970\u7b26"}]}], "zh_from": {"kind": "same-version-chinese-manual-with-source-derived-identity", "manual": {"url": "/zh/docs/13/app-psql.html#APP-PSQL-META-COMMANDS", "anchor": "APP-PSQL-META-COMMANDS", "locale": "zh-Hans", "version": "13", "build_id": 66, "page_key": "app-psql.html", "extraction": "exact-definition", "source_hash": "a5500221235ed19029b98fb69f0d6465a7bf1d0939420838c240c2cd53b2eca3", "fragment_sha256": "55e9d0e1a8907aaef85246c07fe378bf6ab581bd718b91e27a09cd1124898d27", "source_revision": "unknown:rendered-translation-baseline", "translation_revision": "snapshot:sha256:a13a825c39f0268ef1cfe9137e283e38d0da73b2d7894f0733c7b26372a4f6a4", "translated_from_revision": null}, "body_sha256": "c5569a2f4851a8659be6303590b69b67ecda9ece8f67fece149145f8be0b855f", "runtime_rerun": false, "authored_translation": "source-derived-identity", "source_facts_revision": "614ee3133270254e476c118cdf6f72af78d4e4b8bbd9b28ed9ab1e14e4e9c0f6"}, "sections": [], "description_zh": "\u7ed9\u51fa\u6307\u5b9a SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\u5982\u679c\u672a\u6307\u5b9a command \uff0c\u5219 psql \u5c06\u5217\u51fa\u6240\u6709\u53ef\u7528\u8bed\u6cd5\u5e2e\u52a9\u7684\u547d\u4ee4\u3002\u5982\u679c command \u662f\u661f\u53f7\uff08 * \uff09\uff0c\u5219\u663e\u793a\u6240\u6709 SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002 \u4e0e\u5927\u591a\u6570\u5176\u4ed6\u5143\u547d\u4ee4\u4e0d\u540c\uff0c\u6574\u4e2a\u884c\u7684\u5269\u4f59\u90e8\u5206\u59cb\u7ec8\u88ab\u89c6\u4e3a \\help \u7684\u53c2\u6570\uff0c\u53c2\u6570\u4e2d\u4e0d\u8fdb\u884c\u53d8\u91cf\u63d2\u503c\u6216\u53cd\u5f15\u53f7\u6269\u5c55\u3002 \u6ce8\u610f \u4e3a\u4e86\u7b80\u5316\u8f93\u5165\uff0c\u7531\u591a\u4e2a\u5355\u8bcd\u7ec4\u6210\u7684\u547d\u4ee4\u4e0d\u9700\u8981\u52a0\u5f15\u53f7\u3002\u56e0\u6b64\uff0c\u53ef\u4ee5\u76f4\u63a5\u8f93\u5165 \\help alter table \u3002", "description_zh_html": "<p>psql \u547d\u4ee4 \\h or \\help [ command ]\u3002</p><h3>\u540c\u7248\u672c\u4e2d\u6587\u624b\u518c\u5b9a\u4e49</h3><dd><p>\n        \u7ed9\u51fa\u6307\u5b9a <acronym class=\"acronym\">SQL</acronym> \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\u5982\u679c\u672a\u6307\u5b9a <em class=\"replaceable\"><code>command</code></em>\uff0c\u5219 <span class=\"application\">psql</span> \u5c06\u5217\u51fa\u6240\u6709\u53ef\u7528\u8bed\u6cd5\u5e2e\u52a9\u7684\u547d\u4ee4\u3002\u5982\u679c <em class=\"replaceable\"><code>command</code></em> \u662f\u661f\u53f7\uff08<code class=\"literal\">*</code>\uff09\uff0c\u5219\u663e\u793a\u6240\u6709 <acronym class=\"acronym\">SQL</acronym> \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\n        </p><p>\n        \u4e0e\u5927\u591a\u6570\u5176\u4ed6\u5143\u547d\u4ee4\u4e0d\u540c\uff0c\u6574\u4e2a\u884c\u7684\u5269\u4f59\u90e8\u5206\u59cb\u7ec8\u88ab\u89c6\u4e3a<code class=\"command\">\\help</code> \u7684\u53c2\u6570\uff0c\u53c2\u6570\u4e2d\u4e0d\u8fdb\u884c\u53d8\u91cf\u63d2\u503c\u6216\u53cd\u5f15\u53f7\u6269\u5c55\u3002\n        </p><div class=\"note\"><h3 class=\"title\">\u6ce8\u610f</h3><p>\n        \u4e3a\u4e86\u7b80\u5316\u8f93\u5165\uff0c\u7531\u591a\u4e2a\u5355\u8bcd\u7ec4\u6210\u7684\u547d\u4ee4\u4e0d\u9700\u8981\u52a0\u5f15\u53f7\u3002\u56e0\u6b64\uff0c\u53ef\u4ee5\u76f4\u63a5\u8f93\u5165<strong class=\"userinput\"><code>\\help alter table</code></strong>\u3002\n        </p></div></dd><p><a href=\"/zh/docs/13/app-psql.html#APP-PSQL-META-COMMANDS\">\u67e5\u770b\u5b8c\u6574\u4e2d\u6587\u624b\u518c\u4e0e\u4e0a\u4e0b\u6587</a>\u3002</p>"}, "summary": "\u7ed9\u51fa\u6307\u5b9a SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\u5982\u679c\u672a\u6307\u5b9a command \uff0c\u5219 psql \u5c06\u5217\u51fa\u6240\u6709\u53ef\u7528\u8bed\u6cd5\u5e2e\u52a9\u7684\u547d\u4ee4\u3002\u5982\u679c command \u662f\u661f\u53f7\uff08 * \uff09\uff0c\u5219\u663e\u793a\u6240\u6709 SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002 \u4e0e\u5927\u591a\u6570\u5176\u4ed6\u5143\u547d\u4ee4\u4e0d\u540c\uff0c\u6574\u4e2a\u884c\u7684\u5269\u4f59\u90e8\u5206\u59cb\u7ec8\u88ab\u89c6\u4e3a \\help \u7684\u53c2\u6570\uff0c\u53c2\u6570\u4e2d\u4e0d\u8fdb\u884c\u53d8\u91cf\u63d2\u503c\u6216\u53cd\u5f15\u53f7\u6269\u5c55\u3002 \u6ce8\u610f \u4e3a\u4e86\u7b80\u5316\u8f93\u5165\uff0c\u7531\u591a\u4e2a\u5355\u8bcd\u7ec4\u6210\u7684\u547d\u4ee4\u4e0d\u9700\u8981\u52a0\u5f15\u53f7\u3002\u56e0\u6b64\uff0c\u53ef\u4ee5\u76f4\u63a5\u8f93\u5165 \\help alter table \u3002", "version": "13", "link_map": {"/zh/docs/13/app-psql.html#APP-PSQL-META-COMMANDS": "/docs/13/app-psql.html#APP-PSQL-META-COMMANDS"}, "body_html": "<p>psql \u547d\u4ee4 \\h or \\help [ command ]\u3002</p><h3>\u540c\u7248\u672c\u4e2d\u6587\u624b\u518c\u5b9a\u4e49</h3><dd><p>\n        \u7ed9\u51fa\u6307\u5b9a <acronym>SQL</acronym> \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\u5982\u679c\u672a\u6307\u5b9a <em><code>command</code></em>\uff0c\u5219 <span>psql</span> \u5c06\u5217\u51fa\u6240\u6709\u53ef\u7528\u8bed\u6cd5\u5e2e\u52a9\u7684\u547d\u4ee4\u3002\u5982\u679c <em><code>command</code></em> \u662f\u661f\u53f7\uff08<code>*</code>\uff09\uff0c\u5219\u663e\u793a\u6240\u6709 <acronym>SQL</acronym> \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\n        </p><p>\n        \u4e0e\u5927\u591a\u6570\u5176\u4ed6\u5143\u547d\u4ee4\u4e0d\u540c\uff0c\u6574\u4e2a\u884c\u7684\u5269\u4f59\u90e8\u5206\u59cb\u7ec8\u88ab\u89c6\u4e3a<code>\\help</code> \u7684\u53c2\u6570\uff0c\u53c2\u6570\u4e2d\u4e0d\u8fdb\u884c\u53d8\u91cf\u63d2\u503c\u6216\u53cd\u5f15\u53f7\u6269\u5c55\u3002\n        </p><div><h3>\u6ce8\u610f</h3><p>\n        \u4e3a\u4e86\u7b80\u5316\u8f93\u5165\uff0c\u7531\u591a\u4e2a\u5355\u8bcd\u7ec4\u6210\u7684\u547d\u4ee4\u4e0d\u9700\u8981\u52a0\u5f15\u53f7\u3002\u56e0\u6b64\uff0c\u53ef\u4ee5\u76f4\u63a5\u8f93\u5165<strong><code>\\help alter table</code></strong>\u3002\n        </p></div></dd><p><a href=\"/zh/docs/13/app-psql.html#APP-PSQL-META-COMMANDS\" rel=\"nofollow\">\u67e5\u770b\u5b8c\u6574\u4e2d\u6587\u624b\u518c\u4e0e\u4e0a\u4e0b\u6587</a>\u3002</p>", "body_sha256": "b7d89bf535773b5e25bd4355578c914f0e2e18a3847e0631b2e2e1dc8252e983", "content_hash": "cb75268e18b2d81ead2dc3cf5ff00e6aaeb7b0adf5844f6d4776bafac1e59796", "source_database": "center", "source_revision": "614ee3133270254e476c118cdf6f72af78d4e4b8bbd9b28ed9ab1e14e4e9c0f6"}, "modifiers": [], "signature": "\\h or \\help [ command ]", "spellings": ["\\h", "\\help"], "tables_zh": [{"key": "spellings", "rows": [{"command": {"url": "/wiki/psql/cmd-68/?v=13", "text": "\\h"}, "modifiers": "\u6b64\u8bed\u6cd5\u7b7e\u540d\u672a\u5217\u51fa"}, {"command": {"url": "/wiki/psql/cmd-68-65-6c-70/?v=13", "text": "\\help"}, "modifiers": "\u6b64\u8bed\u6cd5\u7b7e\u540d\u672a\u5217\u51fa"}], "title": "\u672c\u7248\u624b\u518c\u4e2d\u7684\u5199\u6cd5", "columns": [{"key": "command", "label": "\u547d\u4ee4"}, {"key": "modifiers", "label": "\u624b\u518c\u4e2d\u7684\u540e\u7f00\u4fee\u9970\u7b26"}]}], "description": ["\u7ed9\u51fa\u6307\u5b9a SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\u5982\u679c\u672a\u6307\u5b9a command \uff0c\u5219 psql \u5c06\u5217\u51fa\u6240\u6709\u53ef\u7528\u8bed\u6cd5\u5e2e\u52a9\u7684\u547d\u4ee4\u3002\u5982\u679c command \u662f\u661f\u53f7\uff08 * \uff09\uff0c\u5219\u663e\u793a\u6240\u6709 SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002 \u4e0e\u5927\u591a\u6570\u5176\u4ed6\u5143\u547d\u4ee4\u4e0d\u540c\uff0c\u6574\u4e2a\u884c\u7684\u5269\u4f59\u90e8\u5206\u59cb\u7ec8\u88ab\u89c6\u4e3a \\help \u7684\u53c2\u6570\uff0c\u53c2\u6570\u4e2d\u4e0d\u8fdb\u884c\u53d8\u91cf\u63d2\u503c\u6216\u53cd\u5f15\u53f7\u6269\u5c55\u3002 \u6ce8\u610f \u4e3a\u4e86\u7b80\u5316\u8f93\u5165\uff0c\u7531\u591a\u4e2a\u5355\u8bcd\u7ec4\u6210\u7684\u547d\u4ee4\u4e0d\u9700\u8981\u52a0\u5f15\u53f7\u3002\u56e0\u6b64\uff0c\u53ef\u4ee5\u76f4\u63a5\u8f93\u5165 \\help alter table \u3002"], "manual_html": "", "manual_path": "app-psql.html#APP-PSQL-META-COMMANDS", "sections_zh": [], "localization": {"status": "complete", "sources": [{"url": "/docs/13/app-psql.html", "method": "same-major semantic node", "sha256": "dd2bf63d81b9a9d3fc69c646197cfdc14a0b1bab1c9f0b98608d66554da4a261", "language": "zh", "matched_nodes": ["#APP-PSQL/div[5]/div[1]/dl[0]/dd[43]/div[1]/h3[0]", "#APP-PSQL/div[7]/div[3]/div[10]/dl[0]/dd[117]/div[2]/p[1]", "#APP-PSQL/div[7]/div[3]/div[10]/dl[0]/dd[117]/p[0]", "#APP-PSQL/div[7]/div[3]/div[10]/dl[0]/dd[117]/p[1]", "#APP-PSQL/div[7]/div[3]/div[10]/dl[0]/dt[116]"]}], "language": "zh", "original_text": {"/versions/13/description/0": "Gives syntax help on the specified SQL command. If command is not specified, then psql will list all the commands for which syntax help is available. If command is an asterisk ( * ), then syntax help on all SQL commands is shown.", "/versions/13/facts/0/label": "Client", "/versions/13/facts/1/label": "Case-sensitive spelling", "/versions/13/tables/0/title": "Spellings in this manual definition", "/versions/13/related/1/label": "psql command-line options and complete manual", "/versions/13/tables/0/columns/0/label": "Command", "/versions/13/tables/0/columns/1/label": "Documented suffix modifiers", "/versions/13/tables/0/rows/0/modifiers": "None listed in this signature", "/versions/13/tables/0/rows/1/modifiers": "None listed in this signature"}, "fallback_fields": [], "source_language": "en", "original_snapshot_sha256": "ed960502297a33bdd3f13f45572eb1fcc7c65e655383fd388d20e05f0f6c6b29", "canonical_center_text_hash": "cb75268e18b2d81ead2dc3cf5ff00e6aaeb7b0adf5844f6d4776bafac1e59796"}, "description_zh": "\u7ed9\u51fa\u6307\u5b9a SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\u5982\u679c\u672a\u6307\u5b9a command \uff0c\u5219 psql \u5c06\u5217\u51fa\u6240\u6709\u53ef\u7528\u8bed\u6cd5\u5e2e\u52a9\u7684\u547d\u4ee4\u3002\u5982\u679c command \u662f\u661f\u53f7\uff08 * \uff09\uff0c\u5219\u663e\u793a\u6240\u6709 SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002 \u4e0e\u5927\u591a\u6570\u5176\u4ed6\u5143\u547d\u4ee4\u4e0d\u540c\uff0c\u6574\u4e2a\u884c\u7684\u5269\u4f59\u90e8\u5206\u59cb\u7ec8\u88ab\u89c6\u4e3a \\help \u7684\u53c2\u6570\uff0c\u53c2\u6570\u4e2d\u4e0d\u8fdb\u884c\u53d8\u91cf\u63d2\u503c\u6216\u53cd\u5f15\u53f7\u6269\u5c55\u3002 \u6ce8\u610f \u4e3a\u4e86\u7b80\u5316\u8f93\u5165\uff0c\u7531\u591a\u4e2a\u5355\u8bcd\u7ec4\u6210\u7684\u547d\u4ee4\u4e0d\u9700\u8981\u52a0\u5f15\u53f7\u3002\u56e0\u6b64\uff0c\u53ef\u4ee5\u76f4\u63a5\u8f93\u5165 \\help alter table \u3002", "comparison_data": {"modifiers": [], "signature": "\\h or \\help [ command ]", "spellings": ["\\h", "\\help"], "definition": "Gives syntax help on the specified SQL command. If command is not specified, then psql will list all the commands for which syntax help is available. If command is an asterisk ( * ), then syntax help on all SQL commands is shown. Unlike most other meta-commands, the entire remainder of the line is always taken to be the argument(s) of \\help , and neither variable interpolation nor backquote expansion are performed in the arguments. Note To simplify typing, commands that consists of several words do not have to be quoted. Thus it is fine to type \\help alter table ."}, "comparison_hash": "b577574b2085fe90e006df02a39f4541a330b0431267a9fe13837edb82fa8cd5", "manual_language": "zh", "description_zh_html": "<p>psql \u547d\u4ee4 \\h or \\help [ command ]\u3002</p><h3>\u540c\u7248\u672c\u4e2d\u6587\u624b\u518c\u5b9a\u4e49</h3><dd><p>\n        \u7ed9\u51fa\u6307\u5b9a <acronym>SQL</acronym> \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\u5982\u679c\u672a\u6307\u5b9a <em><code>command</code></em>\uff0c\u5219 <span>psql</span> \u5c06\u5217\u51fa\u6240\u6709\u53ef\u7528\u8bed\u6cd5\u5e2e\u52a9\u7684\u547d\u4ee4\u3002\u5982\u679c <em><code>command</code></em> \u662f\u661f\u53f7\uff08<code>*</code>\uff09\uff0c\u5219\u663e\u793a\u6240\u6709 <acronym>SQL</acronym> \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\n        </p><p>\n        \u4e0e\u5927\u591a\u6570\u5176\u4ed6\u5143\u547d\u4ee4\u4e0d\u540c\uff0c\u6574\u4e2a\u884c\u7684\u5269\u4f59\u90e8\u5206\u59cb\u7ec8\u88ab\u89c6\u4e3a<code>\\help</code> \u7684\u53c2\u6570\uff0c\u53c2\u6570\u4e2d\u4e0d\u8fdb\u884c\u53d8\u91cf\u63d2\u503c\u6216\u53cd\u5f15\u53f7\u6269\u5c55\u3002\n        </p><div><h3>\u6ce8\u610f</h3><p>\n        \u4e3a\u4e86\u7b80\u5316\u8f93\u5165\uff0c\u7531\u591a\u4e2a\u5355\u8bcd\u7ec4\u6210\u7684\u547d\u4ee4\u4e0d\u9700\u8981\u52a0\u5f15\u53f7\u3002\u56e0\u6b64\uff0c\u53ef\u4ee5\u76f4\u63a5\u8f93\u5165<strong><code>\\help alter table</code></strong>\u3002\n        </p></div></dd><p><a href=\"/zh/docs/13/app-psql.html#APP-PSQL-META-COMMANDS\" rel=\"nofollow\">\u67e5\u770b\u5b8c\u6574\u4e2d\u6587\u624b\u518c\u4e0e\u4e0a\u4e0b\u6587</a>\u3002</p>"}, "14": {"lang": "zh", "facts": [{"label": "\u5ba2\u6237\u7aef", "value": "psql 14.25"}, {"label": "\u533a\u5206\u5927\u5c0f\u5199\u7684\u5199\u6cd5", "value": "\\help"}], "tables": [{"key": "spellings", "rows": [{"command": {"url": "/wiki/psql/cmd-68/?v=14", "text": "\\h"}, "modifiers": "\u6b64\u8bed\u6cd5\u7b7e\u540d\u672a\u5217\u51fa"}, {"command": {"url": "/wiki/psql/cmd-68-65-6c-70/?v=14", "text": "\\help"}, "modifiers": "\u6b64\u8bed\u6cd5\u7b7e\u540d\u672a\u5217\u51fa"}], "title": "\u672c\u7248\u624b\u518c\u4e2d\u7684\u5199\u6cd5", "columns": [{"key": "command", "label": "\u547d\u4ee4"}, {"key": "modifiers", "label": "\u624b\u518c\u4e2d\u7684\u540e\u7f00\u4fee\u9970\u7b26"}]}], "command": "\\help", "related": [{"url": "/wiki/psql/cmd-68/?v=14", "label": "\\h"}, {"url": "/wiki/tool/psql/?v=14", "label": "psql \u547d\u4ee4\u884c\u9009\u9879\u53ca\u5b8c\u6574\u624b\u518c"}], "release": {"ref": "https://ftp.postgresql.org/pub/source/v14.25/postgresql-14.25.tar.bz2", "label": "14.25", "major": "14", "channel": "stable", "manifest": {"major": "14", "release": "14.25", "source_url": "https://ftp.postgresql.org/pub/source/v14.25/postgresql-14.25.tar.bz2", "source_sha256": "09af980eb3a5d0a8ad7a34b95031b1988bbcd430c87700a62d6234c0ed97ae4c"}, "revision": "3458c6c18c8d4de5bbf0e6a5e72e5d2a815a2604b1cef6d1ec84491c75e57d2f", "evidence_kind": "English manual and source declarations", "source_sha256": "09af980eb3a5d0a8ad7a34b95031b1988bbcd430c87700a62d6234c0ed97ae4c"}, "sources": [{"url": "/docs/14/app-psql.html#APP-PSQL-META-COMMANDS", "file": "app-psql.html", "label": "14.25 English manual \u00b7 app-psql.html", "anchor": "APP-PSQL-META-COMMANDS", "sha256": "ea99b69e21da51aab6382e82434cfb27bfb24f452abe7bbb4b1fb29319f081b0"}], "zh_from": "same-version-manual", "facts_zh": [{"label": "\u5ba2\u6237\u7aef", "value": "psql 14.25"}, {"label": "\u533a\u5206\u5927\u5c0f\u5199\u7684\u5199\u6cd5", "value": "\\help"}], "sections": [], "center_zh": {"locale": "zh-Hans", "payload": {"description_zh": "\u7ed9\u51fa\u6307\u5b9a SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\u5982\u679c\u672a\u6307\u5b9a command \uff0c\u5219 psql \u5c06\u5217\u51fa\u6240\u6709\u53ef\u7528\u8bed\u6cd5\u5e2e\u52a9\u7684\u547d\u4ee4\u3002\u5982\u679c command \u662f\u661f\u53f7\uff08 * \uff09\uff0c\u5219\u663e\u793a\u6240\u6709 SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002", "description_zh_html": "<dd><p>\n        \u7ed9\u51fa\u6307\u5b9a <acronym class=\"acronym\">SQL</acronym> \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\u5982\u679c\u672a\u6307\u5b9a <em class=\"replaceable\"><code>command</code></em>\uff0c\u5219 <span class=\"application\">psql</span> \u5c06\u5217\u51fa\u6240\u6709\u53ef\u7528\u8bed\u6cd5\u5e2e\u52a9\u7684\u547d\u4ee4\u3002\u5982\u679c <em class=\"replaceable\"><code>command</code></em> \u662f\u661f\u53f7\uff08<code class=\"literal\">*</code>\uff09\uff0c\u5219\u663e\u793a\u6240\u6709 <acronym class=\"acronym\">SQL</acronym> \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\n        </p><p>\n        \u4e0e\u5927\u591a\u6570\u5176\u4ed6\u5143\u547d\u4ee4\u4e0d\u540c\uff0c\u6574\u4e2a\u884c\u7684\u5269\u4f59\u90e8\u5206\u59cb\u7ec8\u88ab\u89c6\u4e3a<code class=\"command\">\\help</code> \u7684\u53c2\u6570\uff0c\u53c2\u6570\u4e2d\u4e0d\u8fdb\u884c\u53d8\u91cf\u63d2\u503c\u6216\u53cd\u5f15\u53f7\u6269\u5c55\u3002\n        </p><div class=\"note\"><h3 class=\"title\">\u6ce8\u610f</h3><p>\n        \u4e3a\u4e86\u7b80\u5316\u8f93\u5165\uff0c\u7531\u591a\u4e2a\u5355\u8bcd\u7ec4\u6210\u7684\u547d\u4ee4\u4e0d\u9700\u8981\u52a0\u5f15\u53f7\u3002\u56e0\u6b64\uff0c\u53ef\u4ee5\u76f4\u63a5\u8f93\u5165<strong class=\"userinput\"><code>\\help alter table</code></strong>\u3002\n        </p></div></dd>"}, "summary": "\u7ed9\u51fa\u6307\u5b9a SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\u5982\u679c\u672a\u6307\u5b9a command \uff0c\u5219 psql \u5c06\u5217\u51fa\u6240\u6709\u53ef\u7528\u8bed\u6cd5\u5e2e\u52a9\u7684\u547d\u4ee4\u3002\u5982\u679c command \u662f\u661f\u53f7\uff08 * \uff09\uff0c\u5219\u663e\u793a\u6240\u6709 SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002", "body_html": "<dd><p>\n        \u7ed9\u51fa\u6307\u5b9a <acronym class=\"acronym\">SQL</acronym> \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\u5982\u679c\u672a\u6307\u5b9a <em class=\"replaceable\"><code>command</code></em>\uff0c\u5219 <span class=\"application\">psql</span> \u5c06\u5217\u51fa\u6240\u6709\u53ef\u7528\u8bed\u6cd5\u5e2e\u52a9\u7684\u547d\u4ee4\u3002\u5982\u679c <em class=\"replaceable\"><code>command</code></em> \u662f\u661f\u53f7\uff08<code class=\"literal\">*</code>\uff09\uff0c\u5219\u663e\u793a\u6240\u6709 <acronym class=\"acronym\">SQL</acronym> \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\n        </p><p>\n        \u4e0e\u5927\u591a\u6570\u5176\u4ed6\u5143\u547d\u4ee4\u4e0d\u540c\uff0c\u6574\u4e2a\u884c\u7684\u5269\u4f59\u90e8\u5206\u59cb\u7ec8\u88ab\u89c6\u4e3a<code class=\"command\">\\help</code> \u7684\u53c2\u6570\uff0c\u53c2\u6570\u4e2d\u4e0d\u8fdb\u884c\u53d8\u91cf\u63d2\u503c\u6216\u53cd\u5f15\u53f7\u6269\u5c55\u3002\n        </p><div class=\"note\"><h3 class=\"title\">\u6ce8\u610f</h3><p>\n        \u4e3a\u4e86\u7b80\u5316\u8f93\u5165\uff0c\u7531\u591a\u4e2a\u5355\u8bcd\u7ec4\u6210\u7684\u547d\u4ee4\u4e0d\u9700\u8981\u52a0\u5f15\u53f7\u3002\u56e0\u6b64\uff0c\u53ef\u4ee5\u76f4\u63a5\u8f93\u5165<strong class=\"userinput\"><code>\\help alter table</code></strong>\u3002\n        </p></div></dd>", "body_sha256": "55e9d0e1a8907aaef85246c07fe378bf6ab581bd718b91e27a09cd1124898d27", "content_hash": "3bb56998ca10b55b113dbb50c064139a9c4664fe0a832e1a1ff70d1bd8d06357", "source_revision": "pgdoc:b9f0e7232f60f380d642ac9b99226606c254b552", "definition_version": "14", "documentation_release": "14.25"}, "modifiers": [], "signature": "\\h or \\help [ command ]", "spellings": ["\\h", "\\help"], "tables_zh": [{"key": "spellings", "rows": [{"command": {"url": "/wiki/psql/cmd-68/?v=14", "text": "\\h"}, "modifiers": "\u6b64\u8bed\u6cd5\u7b7e\u540d\u672a\u5217\u51fa"}, {"command": {"url": "/wiki/psql/cmd-68-65-6c-70/?v=14", "text": "\\help"}, "modifiers": "\u6b64\u8bed\u6cd5\u7b7e\u540d\u672a\u5217\u51fa"}], "title": "\u672c\u7248\u624b\u518c\u4e2d\u7684\u5199\u6cd5", "columns": [{"key": "command", "label": "\u547d\u4ee4"}, {"key": "modifiers", "label": "\u624b\u518c\u4e2d\u7684\u540e\u7f00\u4fee\u9970\u7b26"}]}], "related_zh": [{"url": "/wiki/psql/cmd-68/?v=14", "label": "\\h"}, {"url": "/wiki/tool/psql/?v=14", "label": "psql \u547d\u4ee4\u884c\u9009\u9879\u53ca\u5b8c\u6574\u624b\u518c"}], "description": ["\u7ed9\u51fa\u6307\u5b9a SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\u5982\u679c\u672a\u6307\u5b9a command \uff0c\u5219 psql \u5c06\u5217\u51fa\u6240\u6709\u53ef\u7528\u8bed\u6cd5\u5e2e\u52a9\u7684\u547d\u4ee4\u3002\u5982\u679c command \u662f\u661f\u53f7\uff08 * \uff09\uff0c\u5219\u663e\u793a\u6240\u6709 SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002"], "manual_html": "<dd><p>\n        \u7ed9\u51fa\u6307\u5b9a <acronym class=\"acronym\">SQL</acronym> \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\u5982\u679c\u672a\u6307\u5b9a <em class=\"replaceable\"><code>command</code></em>\uff0c\u5219 <span class=\"application\">psql</span> \u5c06\u5217\u51fa\u6240\u6709\u53ef\u7528\u8bed\u6cd5\u5e2e\u52a9\u7684\u547d\u4ee4\u3002\u5982\u679c <em class=\"replaceable\"><code>command</code></em> \u662f\u661f\u53f7\uff08<code class=\"literal\">*</code>\uff09\uff0c\u5219\u663e\u793a\u6240\u6709 <acronym class=\"acronym\">SQL</acronym> \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\n        </p><p>\n        \u4e0e\u5927\u591a\u6570\u5176\u4ed6\u5143\u547d\u4ee4\u4e0d\u540c\uff0c\u6574\u4e2a\u884c\u7684\u5269\u4f59\u90e8\u5206\u59cb\u7ec8\u88ab\u89c6\u4e3a<code class=\"command\">\\help</code> \u7684\u53c2\u6570\uff0c\u53c2\u6570\u4e2d\u4e0d\u8fdb\u884c\u53d8\u91cf\u63d2\u503c\u6216\u53cd\u5f15\u53f7\u6269\u5c55\u3002\n        </p><div class=\"note\"><h3 class=\"title\">\u6ce8\u610f</h3><p>\n        \u4e3a\u4e86\u7b80\u5316\u8f93\u5165\uff0c\u7531\u591a\u4e2a\u5355\u8bcd\u7ec4\u6210\u7684\u547d\u4ee4\u4e0d\u9700\u8981\u52a0\u5f15\u53f7\u3002\u56e0\u6b64\uff0c\u53ef\u4ee5\u76f4\u63a5\u8f93\u5165<strong class=\"userinput\"><code>\\help alter table</code></strong>\u3002\n        </p></div></dd>", "manual_path": "app-psql.html#APP-PSQL-META-COMMANDS", "sections_zh": [], "localization": {"status": "same-version-reviewed-manual", "language": "zh", "source_language": "en", "source_revision": "pgdoc:b9f0e7232f60f380d642ac9b99226606c254b552", "documentation_release": "14.25"}, "description_zh": "\u7ed9\u51fa\u6307\u5b9a SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\u5982\u679c\u672a\u6307\u5b9a command \uff0c\u5219 psql \u5c06\u5217\u51fa\u6240\u6709\u53ef\u7528\u8bed\u6cd5\u5e2e\u52a9\u7684\u547d\u4ee4\u3002\u5982\u679c command \u662f\u661f\u53f7\uff08 * \uff09\uff0c\u5219\u663e\u793a\u6240\u6709 SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002", "comparison_data": {"modifiers": [], "signature": "\\h or \\help [ command ]", "spellings": ["\\h", "\\help"], "definition": "Gives syntax help on the specified SQL command. If command is not specified, then psql will list all the commands for which syntax help is available. If command is an asterisk ( * ), then syntax help on all SQL commands is shown. Unlike most other meta-commands, the entire remainder of the line is always taken to be the argument(s) of \\help , and neither variable interpolation nor backquote expansion are performed in the arguments. Note To simplify typing, commands that consists of several words do not have to be quoted. Thus it is fine to type \\help alter table ."}, "comparison_hash": "b577574b2085fe90e006df02a39f4541a330b0431267a9fe13837edb82fa8cd5", "manual_language": "zh", "description_zh_html": "<dd><p>\n        \u7ed9\u51fa\u6307\u5b9a <acronym class=\"acronym\">SQL</acronym> \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\u5982\u679c\u672a\u6307\u5b9a <em class=\"replaceable\"><code>command</code></em>\uff0c\u5219 <span class=\"application\">psql</span> \u5c06\u5217\u51fa\u6240\u6709\u53ef\u7528\u8bed\u6cd5\u5e2e\u52a9\u7684\u547d\u4ee4\u3002\u5982\u679c <em class=\"replaceable\"><code>command</code></em> \u662f\u661f\u53f7\uff08<code class=\"literal\">*</code>\uff09\uff0c\u5219\u663e\u793a\u6240\u6709 <acronym class=\"acronym\">SQL</acronym> \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\n        </p><p>\n        \u4e0e\u5927\u591a\u6570\u5176\u4ed6\u5143\u547d\u4ee4\u4e0d\u540c\uff0c\u6574\u4e2a\u884c\u7684\u5269\u4f59\u90e8\u5206\u59cb\u7ec8\u88ab\u89c6\u4e3a<code class=\"command\">\\help</code> \u7684\u53c2\u6570\uff0c\u53c2\u6570\u4e2d\u4e0d\u8fdb\u884c\u53d8\u91cf\u63d2\u503c\u6216\u53cd\u5f15\u53f7\u6269\u5c55\u3002\n        </p><div class=\"note\"><h3 class=\"title\">\u6ce8\u610f</h3><p>\n        \u4e3a\u4e86\u7b80\u5316\u8f93\u5165\uff0c\u7531\u591a\u4e2a\u5355\u8bcd\u7ec4\u6210\u7684\u547d\u4ee4\u4e0d\u9700\u8981\u52a0\u5f15\u53f7\u3002\u56e0\u6b64\uff0c\u53ef\u4ee5\u76f4\u63a5\u8f93\u5165<strong class=\"userinput\"><code>\\help alter table</code></strong>\u3002\n        </p></div></dd>", "documentation_revision": {"inputs": [{"file": "app-psql.html", "kind": "same-version-reviewed-manual", "locale": "en", "sha256": "ea99b69e21da51aab6382e82434cfb27bfb24f452abe7bbb4b1fb29319f081b0", "version": "14.25"}, {"file": "app-psql.html", "kind": "same-version-reviewed-manual", "locale": "zh-Hans", "sha256": "f2eed17e1379e0b59f4bf5a92289a41d8ec44b349f2b069962f186547dc717ef", "version": "14.25"}], "release": "14.25", "source_revision": "pgdoc:b9f0e7232f60f380d642ac9b99226606c254b552", "runtime_remeasured": false}}, "15": {"lang": "zh", "facts": [{"label": "\u5ba2\u6237\u7aef", "value": "psql 15.20"}, {"label": "\u533a\u5206\u5927\u5c0f\u5199\u7684\u5199\u6cd5", "value": "\\help"}], "tables": [{"key": "spellings", "rows": [{"command": {"url": "/wiki/psql/cmd-68/?v=15", "text": "\\h"}, "modifiers": "\u6b64\u8bed\u6cd5\u7b7e\u540d\u672a\u5217\u51fa"}, {"command": {"url": "/wiki/psql/cmd-68-65-6c-70/?v=15", "text": "\\help"}, "modifiers": "\u6b64\u8bed\u6cd5\u7b7e\u540d\u672a\u5217\u51fa"}], "title": "\u672c\u7248\u624b\u518c\u4e2d\u7684\u5199\u6cd5", "columns": [{"key": "command", "label": "\u547d\u4ee4"}, {"key": "modifiers", "label": "\u624b\u518c\u4e2d\u7684\u540e\u7f00\u4fee\u9970\u7b26"}]}], "command": "\\help", "related": [{"url": "/wiki/psql/cmd-68/?v=15", "label": "\\h"}, {"url": "/wiki/tool/psql/?v=15", "label": "psql \u547d\u4ee4\u884c\u9009\u9879\u53ca\u5b8c\u6574\u624b\u518c"}], "release": {"ref": "https://ftp.postgresql.org/pub/source/v15.20/postgresql-15.20.tar.bz2", "label": "15.20", "major": "15", "channel": "stable", "manifest": {"major": "15", "release": "15.20", "source_url": "https://ftp.postgresql.org/pub/source/v15.20/postgresql-15.20.tar.bz2", "source_sha256": "30e65cbbb771a39b553ed2df7e65622e65647aed55dbc19bd0fe853ff0a08442"}, "revision": "6d870676353ceb5b021cc09084428ae294e90804236e38ffe556364784ee5fe5", "evidence_kind": "English manual and source declarations", "source_sha256": "30e65cbbb771a39b553ed2df7e65622e65647aed55dbc19bd0fe853ff0a08442"}, "sources": [{"url": "/docs/15/app-psql.html#APP-PSQL-META-COMMANDS", "file": "app-psql.html", "label": "15.20 English manual \u00b7 app-psql.html", "anchor": "APP-PSQL-META-COMMANDS", "sha256": "b2a45145fd66cf7a28d7197594e8437e3b0310e88cdedf9d789c0fceefeebc27"}], "zh_from": "same-version-manual", "facts_zh": [{"label": "\u5ba2\u6237\u7aef", "value": "psql 15.20"}, {"label": "\u533a\u5206\u5927\u5c0f\u5199\u7684\u5199\u6cd5", "value": "\\help"}], "sections": [], "center_zh": {"locale": "zh-Hans", "payload": {"description_zh": "\u7ed9\u51fa\u6307\u5b9a SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\u5982\u679c\u672a\u6307\u5b9a command \uff0c\u5219 psql \u5c06\u5217\u51fa\u6240\u6709\u53ef\u7528\u8bed\u6cd5\u5e2e\u52a9\u7684\u547d\u4ee4\u3002\u5982\u679c command \u662f\u661f\u53f7\uff08 * \uff09\uff0c\u5219\u663e\u793a\u6240\u6709 SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002", "description_zh_html": "<dd><p>\n        \u7ed9\u51fa\u6307\u5b9a <acronym class=\"acronym\">SQL</acronym> \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\u5982\u679c\u672a\u6307\u5b9a <em class=\"replaceable\"><code>command</code></em>\uff0c\u5219 <span class=\"application\">psql</span> \u5c06\u5217\u51fa\u6240\u6709\u53ef\u7528\u8bed\u6cd5\u5e2e\u52a9\u7684\u547d\u4ee4\u3002\u5982\u679c <em class=\"replaceable\"><code>command</code></em> \u662f\u661f\u53f7\uff08<code class=\"literal\">*</code>\uff09\uff0c\u5219\u663e\u793a\u6240\u6709 <acronym class=\"acronym\">SQL</acronym> \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\n        </p><p>\n        \u4e0e\u5927\u591a\u6570\u5176\u4ed6\u5143\u547d\u4ee4\u4e0d\u540c\uff0c\u6574\u4e2a\u884c\u7684\u5269\u4f59\u90e8\u5206\u59cb\u7ec8\u88ab\u89c6\u4e3a<code class=\"command\">\\help</code> \u7684\u53c2\u6570\uff0c\u53c2\u6570\u4e2d\u4e0d\u8fdb\u884c\u53d8\u91cf\u63d2\u503c\u6216\u53cd\u5f15\u53f7\u6269\u5c55\u3002\n        </p><div class=\"note\"><h3 class=\"title\">\u6ce8\u610f</h3><p>\n        \u4e3a\u4e86\u7b80\u5316\u8f93\u5165\uff0c\u7531\u591a\u4e2a\u5355\u8bcd\u7ec4\u6210\u7684\u547d\u4ee4\u4e0d\u9700\u8981\u52a0\u5f15\u53f7\u3002\u56e0\u6b64\uff0c\u53ef\u4ee5\u76f4\u63a5\u8f93\u5165<strong class=\"userinput\"><code>\\help alter table</code></strong>\u3002\n        </p></div></dd>"}, "summary": "\u7ed9\u51fa\u6307\u5b9a SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\u5982\u679c\u672a\u6307\u5b9a command \uff0c\u5219 psql \u5c06\u5217\u51fa\u6240\u6709\u53ef\u7528\u8bed\u6cd5\u5e2e\u52a9\u7684\u547d\u4ee4\u3002\u5982\u679c command \u662f\u661f\u53f7\uff08 * \uff09\uff0c\u5219\u663e\u793a\u6240\u6709 SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002", "body_html": "<dd><p>\n        \u7ed9\u51fa\u6307\u5b9a <acronym class=\"acronym\">SQL</acronym> \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\u5982\u679c\u672a\u6307\u5b9a <em class=\"replaceable\"><code>command</code></em>\uff0c\u5219 <span class=\"application\">psql</span> \u5c06\u5217\u51fa\u6240\u6709\u53ef\u7528\u8bed\u6cd5\u5e2e\u52a9\u7684\u547d\u4ee4\u3002\u5982\u679c <em class=\"replaceable\"><code>command</code></em> \u662f\u661f\u53f7\uff08<code class=\"literal\">*</code>\uff09\uff0c\u5219\u663e\u793a\u6240\u6709 <acronym class=\"acronym\">SQL</acronym> \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\n        </p><p>\n        \u4e0e\u5927\u591a\u6570\u5176\u4ed6\u5143\u547d\u4ee4\u4e0d\u540c\uff0c\u6574\u4e2a\u884c\u7684\u5269\u4f59\u90e8\u5206\u59cb\u7ec8\u88ab\u89c6\u4e3a<code class=\"command\">\\help</code> \u7684\u53c2\u6570\uff0c\u53c2\u6570\u4e2d\u4e0d\u8fdb\u884c\u53d8\u91cf\u63d2\u503c\u6216\u53cd\u5f15\u53f7\u6269\u5c55\u3002\n        </p><div class=\"note\"><h3 class=\"title\">\u6ce8\u610f</h3><p>\n        \u4e3a\u4e86\u7b80\u5316\u8f93\u5165\uff0c\u7531\u591a\u4e2a\u5355\u8bcd\u7ec4\u6210\u7684\u547d\u4ee4\u4e0d\u9700\u8981\u52a0\u5f15\u53f7\u3002\u56e0\u6b64\uff0c\u53ef\u4ee5\u76f4\u63a5\u8f93\u5165<strong class=\"userinput\"><code>\\help alter table</code></strong>\u3002\n        </p></div></dd>", "body_sha256": "55e9d0e1a8907aaef85246c07fe378bf6ab581bd718b91e27a09cd1124898d27", "content_hash": "a8e04109f313cf32f993254242d55c1f4d145d67e1a15667d09fe776df941b0b", "source_revision": "pgdoc:b9f0e7232f60f380d642ac9b99226606c254b552", "definition_version": "15", "documentation_release": "15.20"}, "modifiers": [], "signature": "\\h or \\help [ command ]", "spellings": ["\\h", "\\help"], "tables_zh": [{"key": "spellings", "rows": [{"command": {"url": "/wiki/psql/cmd-68/?v=15", "text": "\\h"}, "modifiers": "\u6b64\u8bed\u6cd5\u7b7e\u540d\u672a\u5217\u51fa"}, {"command": {"url": "/wiki/psql/cmd-68-65-6c-70/?v=15", "text": "\\help"}, "modifiers": "\u6b64\u8bed\u6cd5\u7b7e\u540d\u672a\u5217\u51fa"}], "title": "\u672c\u7248\u624b\u518c\u4e2d\u7684\u5199\u6cd5", "columns": [{"key": "command", "label": "\u547d\u4ee4"}, {"key": "modifiers", "label": "\u624b\u518c\u4e2d\u7684\u540e\u7f00\u4fee\u9970\u7b26"}]}], "related_zh": [{"url": "/wiki/psql/cmd-68/?v=15", "label": "\\h"}, {"url": "/wiki/tool/psql/?v=15", "label": "psql \u547d\u4ee4\u884c\u9009\u9879\u53ca\u5b8c\u6574\u624b\u518c"}], "description": ["\u7ed9\u51fa\u6307\u5b9a SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\u5982\u679c\u672a\u6307\u5b9a command \uff0c\u5219 psql \u5c06\u5217\u51fa\u6240\u6709\u53ef\u7528\u8bed\u6cd5\u5e2e\u52a9\u7684\u547d\u4ee4\u3002\u5982\u679c command \u662f\u661f\u53f7\uff08 * \uff09\uff0c\u5219\u663e\u793a\u6240\u6709 SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002"], "manual_html": "<dd><p>\n        \u7ed9\u51fa\u6307\u5b9a <acronym class=\"acronym\">SQL</acronym> \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\u5982\u679c\u672a\u6307\u5b9a <em class=\"replaceable\"><code>command</code></em>\uff0c\u5219 <span class=\"application\">psql</span> \u5c06\u5217\u51fa\u6240\u6709\u53ef\u7528\u8bed\u6cd5\u5e2e\u52a9\u7684\u547d\u4ee4\u3002\u5982\u679c <em class=\"replaceable\"><code>command</code></em> \u662f\u661f\u53f7\uff08<code class=\"literal\">*</code>\uff09\uff0c\u5219\u663e\u793a\u6240\u6709 <acronym class=\"acronym\">SQL</acronym> \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\n        </p><p>\n        \u4e0e\u5927\u591a\u6570\u5176\u4ed6\u5143\u547d\u4ee4\u4e0d\u540c\uff0c\u6574\u4e2a\u884c\u7684\u5269\u4f59\u90e8\u5206\u59cb\u7ec8\u88ab\u89c6\u4e3a<code class=\"command\">\\help</code> \u7684\u53c2\u6570\uff0c\u53c2\u6570\u4e2d\u4e0d\u8fdb\u884c\u53d8\u91cf\u63d2\u503c\u6216\u53cd\u5f15\u53f7\u6269\u5c55\u3002\n        </p><div class=\"note\"><h3 class=\"title\">\u6ce8\u610f</h3><p>\n        \u4e3a\u4e86\u7b80\u5316\u8f93\u5165\uff0c\u7531\u591a\u4e2a\u5355\u8bcd\u7ec4\u6210\u7684\u547d\u4ee4\u4e0d\u9700\u8981\u52a0\u5f15\u53f7\u3002\u56e0\u6b64\uff0c\u53ef\u4ee5\u76f4\u63a5\u8f93\u5165<strong class=\"userinput\"><code>\\help alter table</code></strong>\u3002\n        </p></div></dd>", "manual_path": "app-psql.html#APP-PSQL-META-COMMANDS", "sections_zh": [], "localization": {"status": "same-version-reviewed-manual", "language": "zh", "source_language": "en", "source_revision": "pgdoc:b9f0e7232f60f380d642ac9b99226606c254b552", "documentation_release": "15.20"}, "description_zh": "\u7ed9\u51fa\u6307\u5b9a SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\u5982\u679c\u672a\u6307\u5b9a command \uff0c\u5219 psql \u5c06\u5217\u51fa\u6240\u6709\u53ef\u7528\u8bed\u6cd5\u5e2e\u52a9\u7684\u547d\u4ee4\u3002\u5982\u679c command \u662f\u661f\u53f7\uff08 * \uff09\uff0c\u5219\u663e\u793a\u6240\u6709 SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002", "comparison_data": {"modifiers": [], "signature": "\\h or \\help [ command ]", "spellings": ["\\h", "\\help"], "definition": "Gives syntax help on the specified SQL command. If command is not specified, then psql will list all the commands for which syntax help is available. If command is an asterisk ( * ), then syntax help on all SQL commands is shown. Unlike most other meta-commands, the entire remainder of the line is always taken to be the argument(s) of \\help , and neither variable interpolation nor backquote expansion are performed in the arguments. Note To simplify typing, commands that consists of several words do not have to be quoted. Thus it is fine to type \\help alter table ."}, "comparison_hash": "b577574b2085fe90e006df02a39f4541a330b0431267a9fe13837edb82fa8cd5", "manual_language": "zh", "description_zh_html": "<dd><p>\n        \u7ed9\u51fa\u6307\u5b9a <acronym class=\"acronym\">SQL</acronym> \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\u5982\u679c\u672a\u6307\u5b9a <em class=\"replaceable\"><code>command</code></em>\uff0c\u5219 <span class=\"application\">psql</span> \u5c06\u5217\u51fa\u6240\u6709\u53ef\u7528\u8bed\u6cd5\u5e2e\u52a9\u7684\u547d\u4ee4\u3002\u5982\u679c <em class=\"replaceable\"><code>command</code></em> \u662f\u661f\u53f7\uff08<code class=\"literal\">*</code>\uff09\uff0c\u5219\u663e\u793a\u6240\u6709 <acronym class=\"acronym\">SQL</acronym> \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\n        </p><p>\n        \u4e0e\u5927\u591a\u6570\u5176\u4ed6\u5143\u547d\u4ee4\u4e0d\u540c\uff0c\u6574\u4e2a\u884c\u7684\u5269\u4f59\u90e8\u5206\u59cb\u7ec8\u88ab\u89c6\u4e3a<code class=\"command\">\\help</code> \u7684\u53c2\u6570\uff0c\u53c2\u6570\u4e2d\u4e0d\u8fdb\u884c\u53d8\u91cf\u63d2\u503c\u6216\u53cd\u5f15\u53f7\u6269\u5c55\u3002\n        </p><div class=\"note\"><h3 class=\"title\">\u6ce8\u610f</h3><p>\n        \u4e3a\u4e86\u7b80\u5316\u8f93\u5165\uff0c\u7531\u591a\u4e2a\u5355\u8bcd\u7ec4\u6210\u7684\u547d\u4ee4\u4e0d\u9700\u8981\u52a0\u5f15\u53f7\u3002\u56e0\u6b64\uff0c\u53ef\u4ee5\u76f4\u63a5\u8f93\u5165<strong class=\"userinput\"><code>\\help alter table</code></strong>\u3002\n        </p></div></dd>", "documentation_revision": {"inputs": [{"file": "app-psql.html", "kind": "same-version-reviewed-manual", "locale": "en", "sha256": "b2a45145fd66cf7a28d7197594e8437e3b0310e88cdedf9d789c0fceefeebc27", "version": "15.20"}, {"file": "app-psql.html", "kind": "same-version-reviewed-manual", "locale": "zh-Hans", "sha256": "666ec9d596198e5b09316660b8bc7ce5cdbfbdb13053df6050aeea8838b8a855", "version": "15.20"}], "release": "15.20", "source_revision": "pgdoc:b9f0e7232f60f380d642ac9b99226606c254b552", "runtime_remeasured": false}}, "16": {"lang": "zh", "facts": [{"label": "\u5ba2\u6237\u7aef", "value": "psql 16.16"}, {"label": "\u533a\u5206\u5927\u5c0f\u5199\u7684\u5199\u6cd5", "value": "\\help"}], "tables": [{"key": "spellings", "rows": [{"command": {"url": "/wiki/psql/cmd-68/?v=16", "text": "\\h"}, "modifiers": "\u6b64\u8bed\u6cd5\u7b7e\u540d\u672a\u5217\u51fa"}, {"command": {"url": "/wiki/psql/cmd-68-65-6c-70/?v=16", "text": "\\help"}, "modifiers": "\u6b64\u8bed\u6cd5\u7b7e\u540d\u672a\u5217\u51fa"}], "title": "\u672c\u7248\u624b\u518c\u4e2d\u7684\u5199\u6cd5", "columns": [{"key": "command", "label": "\u547d\u4ee4"}, {"key": "modifiers", "label": "\u624b\u518c\u4e2d\u7684\u540e\u7f00\u4fee\u9970\u7b26"}]}], "command": "\\help", "related": [{"url": "/wiki/psql/cmd-68/?v=16", "label": "\\h"}, {"url": "/wiki/tool/psql/?v=16", "label": "psql \u547d\u4ee4\u884c\u9009\u9879\u53ca\u5b8c\u6574\u624b\u518c"}], "release": {"ref": "https://ftp.postgresql.org/pub/source/v16.16/postgresql-16.16.tar.bz2", "label": "16.16", "major": "16", "channel": "stable", "manifest": {"major": "16", "release": "16.16", "source_url": "https://ftp.postgresql.org/pub/source/v16.16/postgresql-16.16.tar.bz2", "source_sha256": "9d5cd8633043b75740d5d59749c6b7365e6aeb53c47098b1a5e80bb18f87881a"}, "revision": "871ba8026d5a12aa5884ac4e6e77369dacd4b2bdbd835b2305f7dbae4ee7b50d", "evidence_kind": "English manual and source declarations", "source_sha256": "9d5cd8633043b75740d5d59749c6b7365e6aeb53c47098b1a5e80bb18f87881a"}, "sources": [{"url": "/docs/16/app-psql.html#APP-PSQL-META-COMMAND-HELP", "file": "app-psql.html", "label": "16.16 English manual \u00b7 app-psql.html", "anchor": "APP-PSQL-META-COMMAND-HELP", "sha256": "6161d51dc66d54c8fd300944fed2bbae80efe4a532023b2e7771df5d94732330"}], "zh_from": "same-version-manual", "facts_zh": [{"label": "\u5ba2\u6237\u7aef", "value": "psql 16.16"}, {"label": "\u533a\u5206\u5927\u5c0f\u5199\u7684\u5199\u6cd5", "value": "\\help"}], "sections": [], "center_zh": {"locale": "zh-Hans", "payload": {"description_zh": "\u7ed9\u51fa\u6307\u5b9a SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\u5982\u679c\u672a\u6307\u5b9a command \uff0c\u5219 psql \u5c06\u5217\u51fa\u6240\u6709\u53ef\u7528\u8bed\u6cd5\u5e2e\u52a9\u7684\u547d\u4ee4\u3002\u5982\u679c command \u662f\u661f\u53f7\uff08 * \uff09\uff0c\u5219\u663e\u793a\u6240\u6709 SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002", "description_zh_html": "<dd><p>\n        \u7ed9\u51fa\u6307\u5b9a <acronym class=\"acronym\">SQL</acronym> \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\u5982\u679c\u672a\u6307\u5b9a <em class=\"replaceable\"><code>command</code></em>\uff0c\u5219 <span class=\"application\">psql</span> \u5c06\u5217\u51fa\u6240\u6709\u53ef\u7528\u8bed\u6cd5\u5e2e\u52a9\u7684\u547d\u4ee4\u3002\u5982\u679c <em class=\"replaceable\"><code>command</code></em> \u662f\u661f\u53f7\uff08<code class=\"literal\">*</code>\uff09\uff0c\u5219\u663e\u793a\u6240\u6709 <acronym class=\"acronym\">SQL</acronym> \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\n        </p><p>\n        \u4e0e\u5927\u591a\u6570\u5176\u4ed6\u5143\u547d\u4ee4\u4e0d\u540c\uff0c\u6574\u4e2a\u884c\u7684\u5269\u4f59\u90e8\u5206\u59cb\u7ec8\u88ab\u89c6\u4e3a<code class=\"command\">\\help</code> \u7684\u53c2\u6570\uff0c\u53c2\u6570\u4e2d\u4e0d\u8fdb\u884c\u53d8\u91cf\u63d2\u503c\u6216\u53cd\u5f15\u53f7\u6269\u5c55\u3002\n        </p><div class=\"note\"><h3 class=\"title\">\u6ce8\u610f</h3><p>\n        \u4e3a\u4e86\u7b80\u5316\u8f93\u5165\uff0c\u7531\u591a\u4e2a\u5355\u8bcd\u7ec4\u6210\u7684\u547d\u4ee4\u4e0d\u9700\u8981\u52a0\u5f15\u53f7\u3002\u56e0\u6b64\uff0c\u53ef\u4ee5\u76f4\u63a5\u8f93\u5165<strong class=\"userinput\"><code>\\help alter table</code></strong>\u3002\n        </p></div></dd>"}, "summary": "\u7ed9\u51fa\u6307\u5b9a SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\u5982\u679c\u672a\u6307\u5b9a command \uff0c\u5219 psql \u5c06\u5217\u51fa\u6240\u6709\u53ef\u7528\u8bed\u6cd5\u5e2e\u52a9\u7684\u547d\u4ee4\u3002\u5982\u679c command \u662f\u661f\u53f7\uff08 * \uff09\uff0c\u5219\u663e\u793a\u6240\u6709 SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002", "body_html": "<dd><p>\n        \u7ed9\u51fa\u6307\u5b9a <acronym class=\"acronym\">SQL</acronym> \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\u5982\u679c\u672a\u6307\u5b9a <em class=\"replaceable\"><code>command</code></em>\uff0c\u5219 <span class=\"application\">psql</span> \u5c06\u5217\u51fa\u6240\u6709\u53ef\u7528\u8bed\u6cd5\u5e2e\u52a9\u7684\u547d\u4ee4\u3002\u5982\u679c <em class=\"replaceable\"><code>command</code></em> \u662f\u661f\u53f7\uff08<code class=\"literal\">*</code>\uff09\uff0c\u5219\u663e\u793a\u6240\u6709 <acronym class=\"acronym\">SQL</acronym> \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\n        </p><p>\n        \u4e0e\u5927\u591a\u6570\u5176\u4ed6\u5143\u547d\u4ee4\u4e0d\u540c\uff0c\u6574\u4e2a\u884c\u7684\u5269\u4f59\u90e8\u5206\u59cb\u7ec8\u88ab\u89c6\u4e3a<code class=\"command\">\\help</code> \u7684\u53c2\u6570\uff0c\u53c2\u6570\u4e2d\u4e0d\u8fdb\u884c\u53d8\u91cf\u63d2\u503c\u6216\u53cd\u5f15\u53f7\u6269\u5c55\u3002\n        </p><div class=\"note\"><h3 class=\"title\">\u6ce8\u610f</h3><p>\n        \u4e3a\u4e86\u7b80\u5316\u8f93\u5165\uff0c\u7531\u591a\u4e2a\u5355\u8bcd\u7ec4\u6210\u7684\u547d\u4ee4\u4e0d\u9700\u8981\u52a0\u5f15\u53f7\u3002\u56e0\u6b64\uff0c\u53ef\u4ee5\u76f4\u63a5\u8f93\u5165<strong class=\"userinput\"><code>\\help alter table</code></strong>\u3002\n        </p></div></dd>", "body_sha256": "55e9d0e1a8907aaef85246c07fe378bf6ab581bd718b91e27a09cd1124898d27", "content_hash": "764fb767a8bf589caa3d08a91fb19afe14db72c4a3a1a0de5da4de1226a6e67d", "source_revision": "pgdoc:b9f0e7232f60f380d642ac9b99226606c254b552", "definition_version": "16", "documentation_release": "16.16"}, "modifiers": [], "signature": "\\h or \\help [ command ]", "spellings": ["\\h", "\\help"], "tables_zh": [{"key": "spellings", "rows": [{"command": {"url": "/wiki/psql/cmd-68/?v=16", "text": "\\h"}, "modifiers": "\u6b64\u8bed\u6cd5\u7b7e\u540d\u672a\u5217\u51fa"}, {"command": {"url": "/wiki/psql/cmd-68-65-6c-70/?v=16", "text": "\\help"}, "modifiers": "\u6b64\u8bed\u6cd5\u7b7e\u540d\u672a\u5217\u51fa"}], "title": "\u672c\u7248\u624b\u518c\u4e2d\u7684\u5199\u6cd5", "columns": [{"key": "command", "label": "\u547d\u4ee4"}, {"key": "modifiers", "label": "\u624b\u518c\u4e2d\u7684\u540e\u7f00\u4fee\u9970\u7b26"}]}], "related_zh": [{"url": "/wiki/psql/cmd-68/?v=16", "label": "\\h"}, {"url": "/wiki/tool/psql/?v=16", "label": "psql \u547d\u4ee4\u884c\u9009\u9879\u53ca\u5b8c\u6574\u624b\u518c"}], "description": ["\u7ed9\u51fa\u6307\u5b9a SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\u5982\u679c\u672a\u6307\u5b9a command \uff0c\u5219 psql \u5c06\u5217\u51fa\u6240\u6709\u53ef\u7528\u8bed\u6cd5\u5e2e\u52a9\u7684\u547d\u4ee4\u3002\u5982\u679c command \u662f\u661f\u53f7\uff08 * \uff09\uff0c\u5219\u663e\u793a\u6240\u6709 SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002"], "manual_html": "<dd><p>\n        \u7ed9\u51fa\u6307\u5b9a <acronym class=\"acronym\">SQL</acronym> \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\u5982\u679c\u672a\u6307\u5b9a <em class=\"replaceable\"><code>command</code></em>\uff0c\u5219 <span class=\"application\">psql</span> \u5c06\u5217\u51fa\u6240\u6709\u53ef\u7528\u8bed\u6cd5\u5e2e\u52a9\u7684\u547d\u4ee4\u3002\u5982\u679c <em class=\"replaceable\"><code>command</code></em> \u662f\u661f\u53f7\uff08<code class=\"literal\">*</code>\uff09\uff0c\u5219\u663e\u793a\u6240\u6709 <acronym class=\"acronym\">SQL</acronym> \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\n        </p><p>\n        \u4e0e\u5927\u591a\u6570\u5176\u4ed6\u5143\u547d\u4ee4\u4e0d\u540c\uff0c\u6574\u4e2a\u884c\u7684\u5269\u4f59\u90e8\u5206\u59cb\u7ec8\u88ab\u89c6\u4e3a<code class=\"command\">\\help</code> \u7684\u53c2\u6570\uff0c\u53c2\u6570\u4e2d\u4e0d\u8fdb\u884c\u53d8\u91cf\u63d2\u503c\u6216\u53cd\u5f15\u53f7\u6269\u5c55\u3002\n        </p><div class=\"note\"><h3 class=\"title\">\u6ce8\u610f</h3><p>\n        \u4e3a\u4e86\u7b80\u5316\u8f93\u5165\uff0c\u7531\u591a\u4e2a\u5355\u8bcd\u7ec4\u6210\u7684\u547d\u4ee4\u4e0d\u9700\u8981\u52a0\u5f15\u53f7\u3002\u56e0\u6b64\uff0c\u53ef\u4ee5\u76f4\u63a5\u8f93\u5165<strong class=\"userinput\"><code>\\help alter table</code></strong>\u3002\n        </p></div></dd>", "manual_path": "app-psql.html#APP-PSQL-META-COMMAND-HELP", "sections_zh": [], "localization": {"status": "same-version-reviewed-manual", "language": "zh", "source_language": "en", "source_revision": "pgdoc:b9f0e7232f60f380d642ac9b99226606c254b552", "documentation_release": "16.16"}, "description_zh": "\u7ed9\u51fa\u6307\u5b9a SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\u5982\u679c\u672a\u6307\u5b9a command \uff0c\u5219 psql \u5c06\u5217\u51fa\u6240\u6709\u53ef\u7528\u8bed\u6cd5\u5e2e\u52a9\u7684\u547d\u4ee4\u3002\u5982\u679c command \u662f\u661f\u53f7\uff08 * \uff09\uff0c\u5219\u663e\u793a\u6240\u6709 SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002", "comparison_data": {"modifiers": [], "signature": "\\h or \\help [ command ]", "spellings": ["\\h", "\\help"], "definition": "Gives syntax help on the specified SQL command. If command is not specified, then psql will list all the commands for which syntax help is available. If command is an asterisk ( * ), then syntax help on all SQL commands is shown. Unlike most other meta-commands, the entire remainder of the line is always taken to be the argument(s) of \\help , and neither variable interpolation nor backquote expansion are performed in the arguments. Note To simplify typing, commands that consists of several words do not have to be quoted. Thus it is fine to type \\help alter table ."}, "comparison_hash": "b577574b2085fe90e006df02a39f4541a330b0431267a9fe13837edb82fa8cd5", "manual_language": "zh", "description_zh_html": "<dd><p>\n        \u7ed9\u51fa\u6307\u5b9a <acronym class=\"acronym\">SQL</acronym> \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\u5982\u679c\u672a\u6307\u5b9a <em class=\"replaceable\"><code>command</code></em>\uff0c\u5219 <span class=\"application\">psql</span> \u5c06\u5217\u51fa\u6240\u6709\u53ef\u7528\u8bed\u6cd5\u5e2e\u52a9\u7684\u547d\u4ee4\u3002\u5982\u679c <em class=\"replaceable\"><code>command</code></em> \u662f\u661f\u53f7\uff08<code class=\"literal\">*</code>\uff09\uff0c\u5219\u663e\u793a\u6240\u6709 <acronym class=\"acronym\">SQL</acronym> \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\n        </p><p>\n        \u4e0e\u5927\u591a\u6570\u5176\u4ed6\u5143\u547d\u4ee4\u4e0d\u540c\uff0c\u6574\u4e2a\u884c\u7684\u5269\u4f59\u90e8\u5206\u59cb\u7ec8\u88ab\u89c6\u4e3a<code class=\"command\">\\help</code> \u7684\u53c2\u6570\uff0c\u53c2\u6570\u4e2d\u4e0d\u8fdb\u884c\u53d8\u91cf\u63d2\u503c\u6216\u53cd\u5f15\u53f7\u6269\u5c55\u3002\n        </p><div class=\"note\"><h3 class=\"title\">\u6ce8\u610f</h3><p>\n        \u4e3a\u4e86\u7b80\u5316\u8f93\u5165\uff0c\u7531\u591a\u4e2a\u5355\u8bcd\u7ec4\u6210\u7684\u547d\u4ee4\u4e0d\u9700\u8981\u52a0\u5f15\u53f7\u3002\u56e0\u6b64\uff0c\u53ef\u4ee5\u76f4\u63a5\u8f93\u5165<strong class=\"userinput\"><code>\\help alter table</code></strong>\u3002\n        </p></div></dd>", "documentation_revision": {"inputs": [{"file": "app-psql.html", "kind": "same-version-reviewed-manual", "locale": "en", "sha256": "6161d51dc66d54c8fd300944fed2bbae80efe4a532023b2e7771df5d94732330", "version": "16.16"}, {"file": "app-psql.html", "kind": "same-version-reviewed-manual", "locale": "zh-Hans", "sha256": "c0d23bdcbad8a5daf5f0b3f68e3cda09f59d69ebf5476444ecd369309fbd52c6", "version": "16.16"}], "release": "16.16", "source_revision": "pgdoc:b9f0e7232f60f380d642ac9b99226606c254b552", "runtime_remeasured": false}}, "17": {"lang": "zh", "facts": [{"label": "\u5ba2\u6237\u7aef", "value": "psql 17.12"}, {"label": "\u533a\u5206\u5927\u5c0f\u5199\u7684\u5199\u6cd5", "value": "\\help"}], "tables": [{"key": "spellings", "rows": [{"command": {"url": "/wiki/psql/cmd-68/?v=17", "text": "\\h"}, "modifiers": "\u6b64\u8bed\u6cd5\u7b7e\u540d\u672a\u5217\u51fa"}, {"command": {"url": "/wiki/psql/cmd-68-65-6c-70/?v=17", "text": "\\help"}, "modifiers": "\u6b64\u8bed\u6cd5\u7b7e\u540d\u672a\u5217\u51fa"}], "title": "\u672c\u7248\u624b\u518c\u4e2d\u7684\u5199\u6cd5", "columns": [{"key": "command", "label": "\u547d\u4ee4"}, {"key": "modifiers", "label": "\u624b\u518c\u4e2d\u7684\u540e\u7f00\u4fee\u9970\u7b26"}]}], "command": "\\help", "related": [{"url": "/wiki/psql/cmd-68/?v=17", "label": "\\h"}, {"url": "/wiki/tool/psql/?v=17", "label": "psql \u547d\u4ee4\u884c\u9009\u9879\u53ca\u5b8c\u6574\u624b\u518c"}], "release": {"ref": "https://ftp.postgresql.org/pub/source/v17.12/postgresql-17.12.tar.bz2", "label": "17.12", "major": "17", "channel": "stable", "manifest": {"major": "17", "release": "17.12", "source_url": "https://ftp.postgresql.org/pub/source/v17.12/postgresql-17.12.tar.bz2", "source_sha256": "9cf136a703d8ee2f83465c43be4e9e8e7930c82b0bfba13be7e2537be769ac55"}, "revision": "cdf1f58367ae5412a459972f45d3edc959901a849a12eaac1f08b050ba94663e", "evidence_kind": "English manual and source declarations", "source_sha256": "9cf136a703d8ee2f83465c43be4e9e8e7930c82b0bfba13be7e2537be769ac55"}, "sources": [{"url": "/docs/17/app-psql.html#APP-PSQL-META-COMMAND-HELP", "file": "app-psql.html", "label": "17.12 English manual \u00b7 app-psql.html", "anchor": "APP-PSQL-META-COMMAND-HELP", "sha256": "0a15b496eec7377c3e3cdbba9c3202ea984799cde158cf8c6826d339ff454a76"}], "zh_from": "same-version-manual", "facts_zh": [{"label": "\u5ba2\u6237\u7aef", "value": "psql 17.12"}, {"label": "\u533a\u5206\u5927\u5c0f\u5199\u7684\u5199\u6cd5", "value": "\\help"}], "sections": [], "center_zh": {"locale": "zh-Hans", "payload": {"description_zh": "\u7ed9\u51fa\u6307\u5b9a SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\u5982\u679c\u672a\u6307\u5b9a command \uff0c\u5219 psql \u5c06\u5217\u51fa\u6240\u6709\u53ef\u7528\u8bed\u6cd5\u5e2e\u52a9\u7684\u547d\u4ee4\u3002\u5982\u679c command \u662f\u661f\u53f7\uff08 * \uff09\uff0c\u5219\u663e\u793a\u6240\u6709 SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002", "description_zh_html": "<dd><p>\n        \u7ed9\u51fa\u6307\u5b9a <acronym class=\"acronym\">SQL</acronym> \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\u5982\u679c\u672a\u6307\u5b9a <em class=\"replaceable\"><code>command</code></em>\uff0c\u5219 <span class=\"application\">psql</span> \u5c06\u5217\u51fa\u6240\u6709\u53ef\u7528\u8bed\u6cd5\u5e2e\u52a9\u7684\u547d\u4ee4\u3002\u5982\u679c <em class=\"replaceable\"><code>command</code></em> \u662f\u661f\u53f7\uff08<code class=\"literal\">*</code>\uff09\uff0c\u5219\u663e\u793a\u6240\u6709 <acronym class=\"acronym\">SQL</acronym> \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\n        </p><p>\n        \u4e0e\u5927\u591a\u6570\u5176\u4ed6\u5143\u547d\u4ee4\u4e0d\u540c\uff0c\u6574\u4e2a\u884c\u7684\u5269\u4f59\u90e8\u5206\u59cb\u7ec8\u88ab\u89c6\u4e3a<code class=\"command\">\\help</code> \u7684\u53c2\u6570\uff0c\u53c2\u6570\u4e2d\u4e0d\u8fdb\u884c\u53d8\u91cf\u63d2\u503c\u6216\u53cd\u5f15\u53f7\u6269\u5c55\u3002\n        </p><div class=\"note\"><h3 class=\"title\">\u6ce8\u610f</h3><p>\n        \u4e3a\u4e86\u7b80\u5316\u8f93\u5165\uff0c\u7531\u591a\u4e2a\u5355\u8bcd\u7ec4\u6210\u7684\u547d\u4ee4\u4e0d\u9700\u8981\u52a0\u5f15\u53f7\u3002\u56e0\u6b64\uff0c\u53ef\u4ee5\u76f4\u63a5\u8f93\u5165<strong class=\"userinput\"><code>\\help alter table</code></strong>\u3002\n        </p></div></dd>"}, "summary": "\u7ed9\u51fa\u6307\u5b9a SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\u5982\u679c\u672a\u6307\u5b9a command \uff0c\u5219 psql \u5c06\u5217\u51fa\u6240\u6709\u53ef\u7528\u8bed\u6cd5\u5e2e\u52a9\u7684\u547d\u4ee4\u3002\u5982\u679c command \u662f\u661f\u53f7\uff08 * \uff09\uff0c\u5219\u663e\u793a\u6240\u6709 SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002", "body_html": "<dd><p>\n        \u7ed9\u51fa\u6307\u5b9a <acronym class=\"acronym\">SQL</acronym> \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\u5982\u679c\u672a\u6307\u5b9a <em class=\"replaceable\"><code>command</code></em>\uff0c\u5219 <span class=\"application\">psql</span> \u5c06\u5217\u51fa\u6240\u6709\u53ef\u7528\u8bed\u6cd5\u5e2e\u52a9\u7684\u547d\u4ee4\u3002\u5982\u679c <em class=\"replaceable\"><code>command</code></em> \u662f\u661f\u53f7\uff08<code class=\"literal\">*</code>\uff09\uff0c\u5219\u663e\u793a\u6240\u6709 <acronym class=\"acronym\">SQL</acronym> \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\n        </p><p>\n        \u4e0e\u5927\u591a\u6570\u5176\u4ed6\u5143\u547d\u4ee4\u4e0d\u540c\uff0c\u6574\u4e2a\u884c\u7684\u5269\u4f59\u90e8\u5206\u59cb\u7ec8\u88ab\u89c6\u4e3a<code class=\"command\">\\help</code> \u7684\u53c2\u6570\uff0c\u53c2\u6570\u4e2d\u4e0d\u8fdb\u884c\u53d8\u91cf\u63d2\u503c\u6216\u53cd\u5f15\u53f7\u6269\u5c55\u3002\n        </p><div class=\"note\"><h3 class=\"title\">\u6ce8\u610f</h3><p>\n        \u4e3a\u4e86\u7b80\u5316\u8f93\u5165\uff0c\u7531\u591a\u4e2a\u5355\u8bcd\u7ec4\u6210\u7684\u547d\u4ee4\u4e0d\u9700\u8981\u52a0\u5f15\u53f7\u3002\u56e0\u6b64\uff0c\u53ef\u4ee5\u76f4\u63a5\u8f93\u5165<strong class=\"userinput\"><code>\\help alter table</code></strong>\u3002\n        </p></div></dd>", "body_sha256": "55e9d0e1a8907aaef85246c07fe378bf6ab581bd718b91e27a09cd1124898d27", "content_hash": "8becacba37ce18a046a9ddc058d1a2418883399e1226db62e532f466362eaeb7", "source_revision": "pgdoc:b9f0e7232f60f380d642ac9b99226606c254b552", "definition_version": "17", "documentation_release": "17.12"}, "modifiers": [], "signature": "\\h or \\help [ command ]", "spellings": ["\\h", "\\help"], "tables_zh": [{"key": "spellings", "rows": [{"command": {"url": "/wiki/psql/cmd-68/?v=17", "text": "\\h"}, "modifiers": "\u6b64\u8bed\u6cd5\u7b7e\u540d\u672a\u5217\u51fa"}, {"command": {"url": "/wiki/psql/cmd-68-65-6c-70/?v=17", "text": "\\help"}, "modifiers": "\u6b64\u8bed\u6cd5\u7b7e\u540d\u672a\u5217\u51fa"}], "title": "\u672c\u7248\u624b\u518c\u4e2d\u7684\u5199\u6cd5", "columns": [{"key": "command", "label": "\u547d\u4ee4"}, {"key": "modifiers", "label": "\u624b\u518c\u4e2d\u7684\u540e\u7f00\u4fee\u9970\u7b26"}]}], "related_zh": [{"url": "/wiki/psql/cmd-68/?v=17", "label": "\\h"}, {"url": "/wiki/tool/psql/?v=17", "label": "psql \u547d\u4ee4\u884c\u9009\u9879\u53ca\u5b8c\u6574\u624b\u518c"}], "description": ["\u7ed9\u51fa\u6307\u5b9a SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\u5982\u679c\u672a\u6307\u5b9a command \uff0c\u5219 psql \u5c06\u5217\u51fa\u6240\u6709\u53ef\u7528\u8bed\u6cd5\u5e2e\u52a9\u7684\u547d\u4ee4\u3002\u5982\u679c command \u662f\u661f\u53f7\uff08 * \uff09\uff0c\u5219\u663e\u793a\u6240\u6709 SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002"], "manual_html": "<dd><p>\n        \u7ed9\u51fa\u6307\u5b9a <acronym class=\"acronym\">SQL</acronym> \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\u5982\u679c\u672a\u6307\u5b9a <em class=\"replaceable\"><code>command</code></em>\uff0c\u5219 <span class=\"application\">psql</span> \u5c06\u5217\u51fa\u6240\u6709\u53ef\u7528\u8bed\u6cd5\u5e2e\u52a9\u7684\u547d\u4ee4\u3002\u5982\u679c <em class=\"replaceable\"><code>command</code></em> \u662f\u661f\u53f7\uff08<code class=\"literal\">*</code>\uff09\uff0c\u5219\u663e\u793a\u6240\u6709 <acronym class=\"acronym\">SQL</acronym> \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\n        </p><p>\n        \u4e0e\u5927\u591a\u6570\u5176\u4ed6\u5143\u547d\u4ee4\u4e0d\u540c\uff0c\u6574\u4e2a\u884c\u7684\u5269\u4f59\u90e8\u5206\u59cb\u7ec8\u88ab\u89c6\u4e3a<code class=\"command\">\\help</code> \u7684\u53c2\u6570\uff0c\u53c2\u6570\u4e2d\u4e0d\u8fdb\u884c\u53d8\u91cf\u63d2\u503c\u6216\u53cd\u5f15\u53f7\u6269\u5c55\u3002\n        </p><div class=\"note\"><h3 class=\"title\">\u6ce8\u610f</h3><p>\n        \u4e3a\u4e86\u7b80\u5316\u8f93\u5165\uff0c\u7531\u591a\u4e2a\u5355\u8bcd\u7ec4\u6210\u7684\u547d\u4ee4\u4e0d\u9700\u8981\u52a0\u5f15\u53f7\u3002\u56e0\u6b64\uff0c\u53ef\u4ee5\u76f4\u63a5\u8f93\u5165<strong class=\"userinput\"><code>\\help alter table</code></strong>\u3002\n        </p></div></dd>", "manual_path": "app-psql.html#APP-PSQL-META-COMMAND-HELP", "sections_zh": [], "localization": {"status": "same-version-reviewed-manual", "language": "zh", "source_language": "en", "source_revision": "pgdoc:b9f0e7232f60f380d642ac9b99226606c254b552", "documentation_release": "17.12"}, "description_zh": "\u7ed9\u51fa\u6307\u5b9a SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\u5982\u679c\u672a\u6307\u5b9a command \uff0c\u5219 psql \u5c06\u5217\u51fa\u6240\u6709\u53ef\u7528\u8bed\u6cd5\u5e2e\u52a9\u7684\u547d\u4ee4\u3002\u5982\u679c command \u662f\u661f\u53f7\uff08 * \uff09\uff0c\u5219\u663e\u793a\u6240\u6709 SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002", "comparison_data": {"modifiers": [], "signature": "\\h or \\help [ command ]", "spellings": ["\\h", "\\help"], "definition": "Gives syntax help on the specified SQL command. If command is not specified, then psql will list all the commands for which syntax help is available. If command is an asterisk ( * ), then syntax help on all SQL commands is shown. Unlike most other meta-commands, the entire remainder of the line is always taken to be the argument(s) of \\help , and neither variable interpolation nor backquote expansion are performed in the arguments. Note To simplify typing, commands that consists of several words do not have to be quoted. Thus it is fine to type \\help alter table ."}, "comparison_hash": "b577574b2085fe90e006df02a39f4541a330b0431267a9fe13837edb82fa8cd5", "manual_language": "zh", "description_zh_html": "<dd><p>\n        \u7ed9\u51fa\u6307\u5b9a <acronym class=\"acronym\">SQL</acronym> \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\u5982\u679c\u672a\u6307\u5b9a <em class=\"replaceable\"><code>command</code></em>\uff0c\u5219 <span class=\"application\">psql</span> \u5c06\u5217\u51fa\u6240\u6709\u53ef\u7528\u8bed\u6cd5\u5e2e\u52a9\u7684\u547d\u4ee4\u3002\u5982\u679c <em class=\"replaceable\"><code>command</code></em> \u662f\u661f\u53f7\uff08<code class=\"literal\">*</code>\uff09\uff0c\u5219\u663e\u793a\u6240\u6709 <acronym class=\"acronym\">SQL</acronym> \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\n        </p><p>\n        \u4e0e\u5927\u591a\u6570\u5176\u4ed6\u5143\u547d\u4ee4\u4e0d\u540c\uff0c\u6574\u4e2a\u884c\u7684\u5269\u4f59\u90e8\u5206\u59cb\u7ec8\u88ab\u89c6\u4e3a<code class=\"command\">\\help</code> \u7684\u53c2\u6570\uff0c\u53c2\u6570\u4e2d\u4e0d\u8fdb\u884c\u53d8\u91cf\u63d2\u503c\u6216\u53cd\u5f15\u53f7\u6269\u5c55\u3002\n        </p><div class=\"note\"><h3 class=\"title\">\u6ce8\u610f</h3><p>\n        \u4e3a\u4e86\u7b80\u5316\u8f93\u5165\uff0c\u7531\u591a\u4e2a\u5355\u8bcd\u7ec4\u6210\u7684\u547d\u4ee4\u4e0d\u9700\u8981\u52a0\u5f15\u53f7\u3002\u56e0\u6b64\uff0c\u53ef\u4ee5\u76f4\u63a5\u8f93\u5165<strong class=\"userinput\"><code>\\help alter table</code></strong>\u3002\n        </p></div></dd>", "documentation_revision": {"inputs": [{"file": "app-psql.html", "kind": "same-version-reviewed-manual", "locale": "en", "sha256": "0a15b496eec7377c3e3cdbba9c3202ea984799cde158cf8c6826d339ff454a76", "version": "17.12"}, {"file": "app-psql.html", "kind": "same-version-reviewed-manual", "locale": "zh-Hans", "sha256": "72c5d1a2c80c31246970e54811e0b6ea23a7c11cefe49b9e64efbb6b84781fa2", "version": "17.12"}], "release": "17.12", "source_revision": "pgdoc:b9f0e7232f60f380d642ac9b99226606c254b552", "runtime_remeasured": false}}, "18": {"lang": "zh", "facts": [{"label": "\u5ba2\u6237\u7aef", "value": "psql 18.7"}, {"label": "\u533a\u5206\u5927\u5c0f\u5199\u7684\u5199\u6cd5", "value": "\\help"}], "tables": [{"key": "spellings", "rows": [{"command": {"url": "/wiki/psql/cmd-68/?v=18", "text": "\\h"}, "modifiers": "\u6b64\u8bed\u6cd5\u7b7e\u540d\u672a\u5217\u51fa"}, {"command": {"url": "/wiki/psql/cmd-68-65-6c-70/?v=18", "text": "\\help"}, "modifiers": "\u6b64\u8bed\u6cd5\u7b7e\u540d\u672a\u5217\u51fa"}], "title": "\u672c\u7248\u624b\u518c\u4e2d\u7684\u5199\u6cd5", "columns": [{"key": "command", "label": "\u547d\u4ee4"}, {"key": "modifiers", "label": "\u624b\u518c\u4e2d\u7684\u540e\u7f00\u4fee\u9970\u7b26"}]}], "command": "\\help", "related": [{"url": "/wiki/psql/cmd-68/?v=18", "label": "\\h"}, {"url": "/wiki/tool/psql/?v=18", "label": "psql \u547d\u4ee4\u884c\u9009\u9879\u53ca\u5b8c\u6574\u624b\u518c"}], "release": {"ref": "https://ftp.postgresql.org/pub/source/v18.7/postgresql-18.7.tar.bz2", "label": "18.7", "major": "18", "channel": "stable", "manifest": {"major": "18", "release": "18.7", "source_url": "https://ftp.postgresql.org/pub/source/v18.7/postgresql-18.7.tar.bz2", "source_sha256": "441dfae4280cae3e0425e5f876f80559fb0731c140f1aae22b3e5a54d0411bfd"}, "revision": "1b2d62b4845aa46374f2cb680f95d3392322cc8128646992ae4e18d0e7084915", "evidence_kind": "English manual and source declarations", "source_sha256": "441dfae4280cae3e0425e5f876f80559fb0731c140f1aae22b3e5a54d0411bfd"}, "sources": [{"url": "/docs/18/app-psql.html#APP-PSQL-META-COMMAND-HELP", "file": "app-psql.html", "label": "18.7 English manual \u00b7 app-psql.html", "anchor": "APP-PSQL-META-COMMAND-HELP", "sha256": "af50448485df02bdef2b72b8347192ba029c7082b8d0392ecb17db44ad533aaf"}], "zh_from": "same-version-manual", "facts_zh": [{"label": "\u5ba2\u6237\u7aef", "value": "psql 18.7"}, {"label": "\u533a\u5206\u5927\u5c0f\u5199\u7684\u5199\u6cd5", "value": "\\help"}], "sections": [], "center_zh": {"locale": "zh-Hans", "payload": {"description_zh": "\u7ed9\u51fa\u6307\u5b9a SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\u5982\u679c\u672a\u6307\u5b9a command \uff0c\u5219 psql \u5c06\u5217\u51fa\u6240\u6709\u53ef\u7528\u8bed\u6cd5\u5e2e\u52a9\u7684\u547d\u4ee4\u3002\u5982\u679c command \u662f\u661f\u53f7\uff08 * \uff09\uff0c\u5219\u663e\u793a\u6240\u6709 SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002", "description_zh_html": "<dd><p>\n        \u7ed9\u51fa\u6307\u5b9a <acronym class=\"acronym\">SQL</acronym> \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\u5982\u679c\u672a\u6307\u5b9a <em class=\"replaceable\"><code>command</code></em>\uff0c\u5219 <span class=\"application\">psql</span> \u5c06\u5217\u51fa\u6240\u6709\u53ef\u7528\u8bed\u6cd5\u5e2e\u52a9\u7684\u547d\u4ee4\u3002\u5982\u679c <em class=\"replaceable\"><code>command</code></em> \u662f\u661f\u53f7\uff08<code class=\"literal\">*</code>\uff09\uff0c\u5219\u663e\u793a\u6240\u6709 <acronym class=\"acronym\">SQL</acronym> \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\n        </p><p>\n        \u4e0e\u5927\u591a\u6570\u5176\u4ed6\u5143\u547d\u4ee4\u4e0d\u540c\uff0c\u6574\u4e2a\u884c\u7684\u5269\u4f59\u90e8\u5206\u59cb\u7ec8\u88ab\u89c6\u4e3a<code class=\"command\">\\help</code> \u7684\u53c2\u6570\uff0c\u53c2\u6570\u4e2d\u4e0d\u8fdb\u884c\u53d8\u91cf\u63d2\u503c\u6216\u53cd\u5f15\u53f7\u6269\u5c55\u3002\n        </p><div class=\"note\"><h3 class=\"title\">\u6ce8\u610f</h3><p>\n        \u4e3a\u4e86\u7b80\u5316\u8f93\u5165\uff0c\u7531\u591a\u4e2a\u5355\u8bcd\u7ec4\u6210\u7684\u547d\u4ee4\u4e0d\u9700\u8981\u52a0\u5f15\u53f7\u3002\u56e0\u6b64\uff0c\u53ef\u4ee5\u76f4\u63a5\u8f93\u5165<strong class=\"userinput\"><code>\\help alter table</code></strong>\u3002\n        </p></div></dd>"}, "summary": "\u7ed9\u51fa\u6307\u5b9a SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\u5982\u679c\u672a\u6307\u5b9a command \uff0c\u5219 psql \u5c06\u5217\u51fa\u6240\u6709\u53ef\u7528\u8bed\u6cd5\u5e2e\u52a9\u7684\u547d\u4ee4\u3002\u5982\u679c command \u662f\u661f\u53f7\uff08 * \uff09\uff0c\u5219\u663e\u793a\u6240\u6709 SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002", "body_html": "<dd><p>\n        \u7ed9\u51fa\u6307\u5b9a <acronym class=\"acronym\">SQL</acronym> \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\u5982\u679c\u672a\u6307\u5b9a <em class=\"replaceable\"><code>command</code></em>\uff0c\u5219 <span class=\"application\">psql</span> \u5c06\u5217\u51fa\u6240\u6709\u53ef\u7528\u8bed\u6cd5\u5e2e\u52a9\u7684\u547d\u4ee4\u3002\u5982\u679c <em class=\"replaceable\"><code>command</code></em> \u662f\u661f\u53f7\uff08<code class=\"literal\">*</code>\uff09\uff0c\u5219\u663e\u793a\u6240\u6709 <acronym class=\"acronym\">SQL</acronym> \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\n        </p><p>\n        \u4e0e\u5927\u591a\u6570\u5176\u4ed6\u5143\u547d\u4ee4\u4e0d\u540c\uff0c\u6574\u4e2a\u884c\u7684\u5269\u4f59\u90e8\u5206\u59cb\u7ec8\u88ab\u89c6\u4e3a<code class=\"command\">\\help</code> \u7684\u53c2\u6570\uff0c\u53c2\u6570\u4e2d\u4e0d\u8fdb\u884c\u53d8\u91cf\u63d2\u503c\u6216\u53cd\u5f15\u53f7\u6269\u5c55\u3002\n        </p><div class=\"note\"><h3 class=\"title\">\u6ce8\u610f</h3><p>\n        \u4e3a\u4e86\u7b80\u5316\u8f93\u5165\uff0c\u7531\u591a\u4e2a\u5355\u8bcd\u7ec4\u6210\u7684\u547d\u4ee4\u4e0d\u9700\u8981\u52a0\u5f15\u53f7\u3002\u56e0\u6b64\uff0c\u53ef\u4ee5\u76f4\u63a5\u8f93\u5165<strong class=\"userinput\"><code>\\help alter table</code></strong>\u3002\n        </p></div></dd>", "body_sha256": "55e9d0e1a8907aaef85246c07fe378bf6ab581bd718b91e27a09cd1124898d27", "content_hash": "bb233ce1e5eeac07b2fb06da70410a1956cfab7eb6c83b02e5f3780e02ed9d86", "source_revision": "pgdoc:b9f0e7232f60f380d642ac9b99226606c254b552", "definition_version": "18", "documentation_release": "18.7"}, "modifiers": [], "signature": "\\h or \\help [ command ]", "spellings": ["\\h", "\\help"], "tables_zh": [{"key": "spellings", "rows": [{"command": {"url": "/wiki/psql/cmd-68/?v=18", "text": "\\h"}, "modifiers": "\u6b64\u8bed\u6cd5\u7b7e\u540d\u672a\u5217\u51fa"}, {"command": {"url": "/wiki/psql/cmd-68-65-6c-70/?v=18", "text": "\\help"}, "modifiers": "\u6b64\u8bed\u6cd5\u7b7e\u540d\u672a\u5217\u51fa"}], "title": "\u672c\u7248\u624b\u518c\u4e2d\u7684\u5199\u6cd5", "columns": [{"key": "command", "label": "\u547d\u4ee4"}, {"key": "modifiers", "label": "\u624b\u518c\u4e2d\u7684\u540e\u7f00\u4fee\u9970\u7b26"}]}], "related_zh": [{"url": "/wiki/psql/cmd-68/?v=18", "label": "\\h"}, {"url": "/wiki/tool/psql/?v=18", "label": "psql \u547d\u4ee4\u884c\u9009\u9879\u53ca\u5b8c\u6574\u624b\u518c"}], "description": ["\u7ed9\u51fa\u6307\u5b9a SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\u5982\u679c\u672a\u6307\u5b9a command \uff0c\u5219 psql \u5c06\u5217\u51fa\u6240\u6709\u53ef\u7528\u8bed\u6cd5\u5e2e\u52a9\u7684\u547d\u4ee4\u3002\u5982\u679c command \u662f\u661f\u53f7\uff08 * \uff09\uff0c\u5219\u663e\u793a\u6240\u6709 SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002"], "manual_html": "<dd><p>\n        \u7ed9\u51fa\u6307\u5b9a <acronym class=\"acronym\">SQL</acronym> \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\u5982\u679c\u672a\u6307\u5b9a <em class=\"replaceable\"><code>command</code></em>\uff0c\u5219 <span class=\"application\">psql</span> \u5c06\u5217\u51fa\u6240\u6709\u53ef\u7528\u8bed\u6cd5\u5e2e\u52a9\u7684\u547d\u4ee4\u3002\u5982\u679c <em class=\"replaceable\"><code>command</code></em> \u662f\u661f\u53f7\uff08<code class=\"literal\">*</code>\uff09\uff0c\u5219\u663e\u793a\u6240\u6709 <acronym class=\"acronym\">SQL</acronym> \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\n        </p><p>\n        \u4e0e\u5927\u591a\u6570\u5176\u4ed6\u5143\u547d\u4ee4\u4e0d\u540c\uff0c\u6574\u4e2a\u884c\u7684\u5269\u4f59\u90e8\u5206\u59cb\u7ec8\u88ab\u89c6\u4e3a<code class=\"command\">\\help</code> \u7684\u53c2\u6570\uff0c\u53c2\u6570\u4e2d\u4e0d\u8fdb\u884c\u53d8\u91cf\u63d2\u503c\u6216\u53cd\u5f15\u53f7\u6269\u5c55\u3002\n        </p><div class=\"note\"><h3 class=\"title\">\u6ce8\u610f</h3><p>\n        \u4e3a\u4e86\u7b80\u5316\u8f93\u5165\uff0c\u7531\u591a\u4e2a\u5355\u8bcd\u7ec4\u6210\u7684\u547d\u4ee4\u4e0d\u9700\u8981\u52a0\u5f15\u53f7\u3002\u56e0\u6b64\uff0c\u53ef\u4ee5\u76f4\u63a5\u8f93\u5165<strong class=\"userinput\"><code>\\help alter table</code></strong>\u3002\n        </p></div></dd>", "manual_path": "app-psql.html#APP-PSQL-META-COMMAND-HELP", "sections_zh": [], "localization": {"status": "same-version-reviewed-manual", "language": "zh", "source_language": "en", "source_revision": "pgdoc:b9f0e7232f60f380d642ac9b99226606c254b552", "documentation_release": "18.7"}, "description_zh": "\u7ed9\u51fa\u6307\u5b9a SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\u5982\u679c\u672a\u6307\u5b9a command \uff0c\u5219 psql \u5c06\u5217\u51fa\u6240\u6709\u53ef\u7528\u8bed\u6cd5\u5e2e\u52a9\u7684\u547d\u4ee4\u3002\u5982\u679c command \u662f\u661f\u53f7\uff08 * \uff09\uff0c\u5219\u663e\u793a\u6240\u6709 SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002", "comparison_data": {"modifiers": [], "signature": "\\h or \\help [ command ]", "spellings": ["\\h", "\\help"], "definition": "Gives syntax help on the specified SQL command. If command is not specified, then psql will list all the commands for which syntax help is available. If command is an asterisk ( * ), then syntax help on all SQL commands is shown. Unlike most other meta-commands, the entire remainder of the line is always taken to be the argument(s) of \\help , and neither variable interpolation nor backquote expansion are performed in the arguments. Note To simplify typing, commands that consists of several words do not have to be quoted. Thus it is fine to type \\help alter table ."}, "comparison_hash": "b577574b2085fe90e006df02a39f4541a330b0431267a9fe13837edb82fa8cd5", "manual_language": "zh", "description_zh_html": "<dd><p>\n        \u7ed9\u51fa\u6307\u5b9a <acronym class=\"acronym\">SQL</acronym> \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\u5982\u679c\u672a\u6307\u5b9a <em class=\"replaceable\"><code>command</code></em>\uff0c\u5219 <span class=\"application\">psql</span> \u5c06\u5217\u51fa\u6240\u6709\u53ef\u7528\u8bed\u6cd5\u5e2e\u52a9\u7684\u547d\u4ee4\u3002\u5982\u679c <em class=\"replaceable\"><code>command</code></em> \u662f\u661f\u53f7\uff08<code class=\"literal\">*</code>\uff09\uff0c\u5219\u663e\u793a\u6240\u6709 <acronym class=\"acronym\">SQL</acronym> \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\n        </p><p>\n        \u4e0e\u5927\u591a\u6570\u5176\u4ed6\u5143\u547d\u4ee4\u4e0d\u540c\uff0c\u6574\u4e2a\u884c\u7684\u5269\u4f59\u90e8\u5206\u59cb\u7ec8\u88ab\u89c6\u4e3a<code class=\"command\">\\help</code> \u7684\u53c2\u6570\uff0c\u53c2\u6570\u4e2d\u4e0d\u8fdb\u884c\u53d8\u91cf\u63d2\u503c\u6216\u53cd\u5f15\u53f7\u6269\u5c55\u3002\n        </p><div class=\"note\"><h3 class=\"title\">\u6ce8\u610f</h3><p>\n        \u4e3a\u4e86\u7b80\u5316\u8f93\u5165\uff0c\u7531\u591a\u4e2a\u5355\u8bcd\u7ec4\u6210\u7684\u547d\u4ee4\u4e0d\u9700\u8981\u52a0\u5f15\u53f7\u3002\u56e0\u6b64\uff0c\u53ef\u4ee5\u76f4\u63a5\u8f93\u5165<strong class=\"userinput\"><code>\\help alter table</code></strong>\u3002\n        </p></div></dd>", "documentation_revision": {"inputs": [{"file": "app-psql.html", "kind": "same-version-reviewed-manual", "locale": "en", "sha256": "af50448485df02bdef2b72b8347192ba029c7082b8d0392ecb17db44ad533aaf", "version": "18.7"}, {"file": "app-psql.html", "kind": "same-version-reviewed-manual", "locale": "zh-Hans", "sha256": "cb475c53a16d9e06358f5e6c9c5649645db92568cfd319f230c62c9f57ae090b", "version": "18.7"}], "release": "18.7", "source_revision": "pgdoc:b9f0e7232f60f380d642ac9b99226606c254b552", "runtime_remeasured": false}, "center_zh_rendered": "<dl><dd><p>\n        \u7ed9\u51fa\u6307\u5b9a SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\u5982\u679c\u672a\u6307\u5b9a <em class=\"replaceable\"><code>command</code></em>\uff0c\u5219 <span class=\"application\">psql</span> \u5c06\u5217\u51fa\u6240\u6709\u53ef\u7528\u8bed\u6cd5\u5e2e\u52a9\u7684\u547d\u4ee4\u3002\u5982\u679c <em class=\"replaceable\"><code>command</code></em> \u662f\u661f\u53f7\uff08<code class=\"literal\">*</code>\uff09\uff0c\u5219\u663e\u793a\u6240\u6709 SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\n        </p><p>\n        \u4e0e\u5927\u591a\u6570\u5176\u4ed6\u5143\u547d\u4ee4\u4e0d\u540c\uff0c\u6574\u4e2a\u884c\u7684\u5269\u4f59\u90e8\u5206\u59cb\u7ec8\u88ab\u89c6\u4e3a<code class=\"command\">\\help</code> \u7684\u53c2\u6570\uff0c\u53c2\u6570\u4e2d\u4e0d\u8fdb\u884c\u53d8\u91cf\u63d2\u503c\u6216\u53cd\u5f15\u53f7\u6269\u5c55\u3002\n        </p><div class=\"note\"><h3 class=\"title\">\u6ce8\u610f</h3><p>\n        \u4e3a\u4e86\u7b80\u5316\u8f93\u5165\uff0c\u7531\u591a\u4e2a\u5355\u8bcd\u7ec4\u6210\u7684\u547d\u4ee4\u4e0d\u9700\u8981\u52a0\u5f15\u53f7\u3002\u56e0\u6b64\uff0c\u53ef\u4ee5\u76f4\u63a5\u8f93\u5165<strong class=\"userinput\"><code>\\help alter table</code></strong>\u3002\n        </p></div></dd></dl>"}, "19": {"lang": "zh", "facts": [{"label": "\u5ba2\u6237\u7aef", "value": "psql 19rc2"}, {"label": "\u533a\u5206\u5927\u5c0f\u5199\u7684\u5199\u6cd5", "value": "\\help"}], "tables": [{"key": "spellings", "rows": [{"command": {"url": "/wiki/psql/cmd-68/?v=19", "text": "\\h"}, "modifiers": "\u6b64\u8bed\u6cd5\u7b7e\u540d\u672a\u5217\u51fa"}, {"command": {"url": "/wiki/psql/cmd-68-65-6c-70/?v=19", "text": "\\help"}, "modifiers": "\u6b64\u8bed\u6cd5\u7b7e\u540d\u672a\u5217\u51fa"}], "title": "\u672c\u7248\u624b\u518c\u4e2d\u7684\u5199\u6cd5", "columns": [{"key": "command", "label": "\u547d\u4ee4"}, {"key": "modifiers", "label": "\u624b\u518c\u4e2d\u7684\u540e\u7f00\u4fee\u9970\u7b26"}]}], "command": "\\help", "related": [{"url": "/wiki/psql/cmd-68/?v=19", "label": "\\h"}, {"url": "/wiki/tool/psql/?v=19", "label": "psql \u547d\u4ee4\u884c\u9009\u9879\u53ca\u5b8c\u6574\u624b\u518c"}], "release": {"ref": "https://ftp.postgresql.org/pub/source/v19rc2/postgresql-19rc2.tar.bz2", "label": "19rc2", "major": "19", "channel": "preview", "manifest": {"major": "19", "release": "19rc2", "source_url": "https://ftp.postgresql.org/pub/source/v19rc2/postgresql-19rc2.tar.bz2", "source_sha256": "23a7bb862e4bac395c047305ed0084117b01e71255ce858b907cdcd78ce40351"}, "revision": "cd49a2a98fed04eec7571858125796f86e63613d1985225049f2aa8b0955f256", "evidence_kind": "English manual and source declarations", "source_sha256": "23a7bb862e4bac395c047305ed0084117b01e71255ce858b907cdcd78ce40351"}, "sources": [{"url": "/docs/19/app-psql.html#APP-PSQL-META-COMMAND-HELP", "file": "app-psql.html", "label": "19rc2 English manual \u00b7 app-psql.html", "anchor": "APP-PSQL-META-COMMAND-HELP", "sha256": "88aeb3d77ad0a535a6a363215f0ac18936c368ac157e694ad30fea3c1ee30218"}], "zh_from": "same-version-manual", "facts_zh": [{"label": "\u5ba2\u6237\u7aef", "value": "psql 19rc2"}, {"label": "\u533a\u5206\u5927\u5c0f\u5199\u7684\u5199\u6cd5", "value": "\\help"}], "sections": [], "center_zh": {"locale": "zh-Hans", "payload": {"description_zh": "\u7ed9\u51fa\u6307\u5b9a SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\u5982\u679c\u672a\u6307\u5b9a command \uff0c\u5219 psql \u5c06\u5217\u51fa\u6240\u6709\u53ef\u7528\u8bed\u6cd5\u5e2e\u52a9\u7684\u547d\u4ee4\u3002\u5982\u679c command \u662f\u661f\u53f7\uff08 * \uff09\uff0c\u5219\u663e\u793a\u6240\u6709 SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002", "description_zh_html": "<dd><p>\n        \u7ed9\u51fa\u6307\u5b9a <acronym class=\"acronym\">SQL</acronym> \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\u5982\u679c\u672a\u6307\u5b9a <em class=\"replaceable\"><code>command</code></em>\uff0c\u5219 <span class=\"application\">psql</span> \u5c06\u5217\u51fa\u6240\u6709\u53ef\u7528\u8bed\u6cd5\u5e2e\u52a9\u7684\u547d\u4ee4\u3002\u5982\u679c <em class=\"replaceable\"><code>command</code></em> \u662f\u661f\u53f7\uff08<code class=\"literal\">*</code>\uff09\uff0c\u5219\u663e\u793a\u6240\u6709 <acronym class=\"acronym\">SQL</acronym> \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\n        </p><p>\n        \u4e0e\u5927\u591a\u6570\u5176\u4ed6\u5143\u547d\u4ee4\u4e0d\u540c\uff0c\u6574\u4e2a\u884c\u7684\u5269\u4f59\u90e8\u5206\u59cb\u7ec8\u88ab\u89c6\u4e3a<code class=\"command\">\\help</code> \u7684\u53c2\u6570\uff0c\u53c2\u6570\u4e2d\u4e0d\u8fdb\u884c\u53d8\u91cf\u63d2\u503c\u6216\u53cd\u5f15\u53f7\u6269\u5c55\u3002\n        </p><div class=\"note\"><h3 class=\"title\">\u6ce8\u610f</h3><p>\n        \u4e3a\u4e86\u7b80\u5316\u8f93\u5165\uff0c\u7531\u591a\u4e2a\u5355\u8bcd\u7ec4\u6210\u7684\u547d\u4ee4\u4e0d\u9700\u8981\u52a0\u5f15\u53f7\u3002\u56e0\u6b64\uff0c\u53ef\u4ee5\u76f4\u63a5\u8f93\u5165<strong class=\"userinput\"><code>\\help alter table</code></strong>\u3002\n        </p></div></dd>"}, "summary": "\u7ed9\u51fa\u6307\u5b9a SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\u5982\u679c\u672a\u6307\u5b9a command \uff0c\u5219 psql \u5c06\u5217\u51fa\u6240\u6709\u53ef\u7528\u8bed\u6cd5\u5e2e\u52a9\u7684\u547d\u4ee4\u3002\u5982\u679c command \u662f\u661f\u53f7\uff08 * \uff09\uff0c\u5219\u663e\u793a\u6240\u6709 SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002", "body_html": "<dd><p>\n        \u7ed9\u51fa\u6307\u5b9a <acronym class=\"acronym\">SQL</acronym> \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\u5982\u679c\u672a\u6307\u5b9a <em class=\"replaceable\"><code>command</code></em>\uff0c\u5219 <span class=\"application\">psql</span> \u5c06\u5217\u51fa\u6240\u6709\u53ef\u7528\u8bed\u6cd5\u5e2e\u52a9\u7684\u547d\u4ee4\u3002\u5982\u679c <em class=\"replaceable\"><code>command</code></em> \u662f\u661f\u53f7\uff08<code class=\"literal\">*</code>\uff09\uff0c\u5219\u663e\u793a\u6240\u6709 <acronym class=\"acronym\">SQL</acronym> \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\n        </p><p>\n        \u4e0e\u5927\u591a\u6570\u5176\u4ed6\u5143\u547d\u4ee4\u4e0d\u540c\uff0c\u6574\u4e2a\u884c\u7684\u5269\u4f59\u90e8\u5206\u59cb\u7ec8\u88ab\u89c6\u4e3a<code class=\"command\">\\help</code> \u7684\u53c2\u6570\uff0c\u53c2\u6570\u4e2d\u4e0d\u8fdb\u884c\u53d8\u91cf\u63d2\u503c\u6216\u53cd\u5f15\u53f7\u6269\u5c55\u3002\n        </p><div class=\"note\"><h3 class=\"title\">\u6ce8\u610f</h3><p>\n        \u4e3a\u4e86\u7b80\u5316\u8f93\u5165\uff0c\u7531\u591a\u4e2a\u5355\u8bcd\u7ec4\u6210\u7684\u547d\u4ee4\u4e0d\u9700\u8981\u52a0\u5f15\u53f7\u3002\u56e0\u6b64\uff0c\u53ef\u4ee5\u76f4\u63a5\u8f93\u5165<strong class=\"userinput\"><code>\\help alter table</code></strong>\u3002\n        </p></div></dd>", "body_sha256": "55e9d0e1a8907aaef85246c07fe378bf6ab581bd718b91e27a09cd1124898d27", "content_hash": "78f552f38e0bc0c9cab08a7ceeb5f95181b73eba7094e2712bc84ae673bde19d", "source_revision": "pgdoc:b9f0e7232f60f380d642ac9b99226606c254b552", "definition_version": "19", "documentation_release": "19rc2"}, "modifiers": [], "signature": "\\h or \\help [ command ]", "spellings": ["\\h", "\\help"], "tables_zh": [{"key": "spellings", "rows": [{"command": {"url": "/wiki/psql/cmd-68/?v=19", "text": "\\h"}, "modifiers": "\u6b64\u8bed\u6cd5\u7b7e\u540d\u672a\u5217\u51fa"}, {"command": {"url": "/wiki/psql/cmd-68-65-6c-70/?v=19", "text": "\\help"}, "modifiers": "\u6b64\u8bed\u6cd5\u7b7e\u540d\u672a\u5217\u51fa"}], "title": "\u672c\u7248\u624b\u518c\u4e2d\u7684\u5199\u6cd5", "columns": [{"key": "command", "label": "\u547d\u4ee4"}, {"key": "modifiers", "label": "\u624b\u518c\u4e2d\u7684\u540e\u7f00\u4fee\u9970\u7b26"}]}], "related_zh": [{"url": "/wiki/psql/cmd-68/?v=19", "label": "\\h"}, {"url": "/wiki/tool/psql/?v=19", "label": "psql \u547d\u4ee4\u884c\u9009\u9879\u53ca\u5b8c\u6574\u624b\u518c"}], "description": ["\u7ed9\u51fa\u6307\u5b9a SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\u5982\u679c\u672a\u6307\u5b9a command \uff0c\u5219 psql \u5c06\u5217\u51fa\u6240\u6709\u53ef\u7528\u8bed\u6cd5\u5e2e\u52a9\u7684\u547d\u4ee4\u3002\u5982\u679c command \u662f\u661f\u53f7\uff08 * \uff09\uff0c\u5219\u663e\u793a\u6240\u6709 SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002"], "manual_html": "<dd><p>\n        \u7ed9\u51fa\u6307\u5b9a <acronym class=\"acronym\">SQL</acronym> \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\u5982\u679c\u672a\u6307\u5b9a <em class=\"replaceable\"><code>command</code></em>\uff0c\u5219 <span class=\"application\">psql</span> \u5c06\u5217\u51fa\u6240\u6709\u53ef\u7528\u8bed\u6cd5\u5e2e\u52a9\u7684\u547d\u4ee4\u3002\u5982\u679c <em class=\"replaceable\"><code>command</code></em> \u662f\u661f\u53f7\uff08<code class=\"literal\">*</code>\uff09\uff0c\u5219\u663e\u793a\u6240\u6709 <acronym class=\"acronym\">SQL</acronym> \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\n        </p><p>\n        \u4e0e\u5927\u591a\u6570\u5176\u4ed6\u5143\u547d\u4ee4\u4e0d\u540c\uff0c\u6574\u4e2a\u884c\u7684\u5269\u4f59\u90e8\u5206\u59cb\u7ec8\u88ab\u89c6\u4e3a<code class=\"command\">\\help</code> \u7684\u53c2\u6570\uff0c\u53c2\u6570\u4e2d\u4e0d\u8fdb\u884c\u53d8\u91cf\u63d2\u503c\u6216\u53cd\u5f15\u53f7\u6269\u5c55\u3002\n        </p><div class=\"note\"><h3 class=\"title\">\u6ce8\u610f</h3><p>\n        \u4e3a\u4e86\u7b80\u5316\u8f93\u5165\uff0c\u7531\u591a\u4e2a\u5355\u8bcd\u7ec4\u6210\u7684\u547d\u4ee4\u4e0d\u9700\u8981\u52a0\u5f15\u53f7\u3002\u56e0\u6b64\uff0c\u53ef\u4ee5\u76f4\u63a5\u8f93\u5165<strong class=\"userinput\"><code>\\help alter table</code></strong>\u3002\n        </p></div></dd>", "manual_path": "app-psql.html#APP-PSQL-META-COMMAND-HELP", "sections_zh": [], "localization": {"status": "same-version-reviewed-manual", "language": "zh", "source_language": "en", "source_revision": "pgdoc:b9f0e7232f60f380d642ac9b99226606c254b552", "documentation_release": "19rc2"}, "description_zh": "\u7ed9\u51fa\u6307\u5b9a SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\u5982\u679c\u672a\u6307\u5b9a command \uff0c\u5219 psql \u5c06\u5217\u51fa\u6240\u6709\u53ef\u7528\u8bed\u6cd5\u5e2e\u52a9\u7684\u547d\u4ee4\u3002\u5982\u679c command \u662f\u661f\u53f7\uff08 * \uff09\uff0c\u5219\u663e\u793a\u6240\u6709 SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002", "comparison_data": {"modifiers": [], "signature": "\\h or \\help [ command ]", "spellings": ["\\h", "\\help"], "definition": "Gives syntax help on the specified SQL command. If command is not specified, then psql will list all the commands for which syntax help is available. If command is an asterisk ( * ), then syntax help on all SQL commands is shown. Unlike most other meta-commands, the entire remainder of the line is always taken to be the argument(s) of \\help , and neither variable interpolation nor backquote expansion are performed in the arguments. Note To simplify typing, commands that consists of several words do not have to be quoted. Thus it is fine to type \\help alter table ."}, "comparison_hash": "b577574b2085fe90e006df02a39f4541a330b0431267a9fe13837edb82fa8cd5", "manual_language": "zh", "description_zh_html": "<dd><p>\n        \u7ed9\u51fa\u6307\u5b9a <acronym class=\"acronym\">SQL</acronym> \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\u5982\u679c\u672a\u6307\u5b9a <em class=\"replaceable\"><code>command</code></em>\uff0c\u5219 <span class=\"application\">psql</span> \u5c06\u5217\u51fa\u6240\u6709\u53ef\u7528\u8bed\u6cd5\u5e2e\u52a9\u7684\u547d\u4ee4\u3002\u5982\u679c <em class=\"replaceable\"><code>command</code></em> \u662f\u661f\u53f7\uff08<code class=\"literal\">*</code>\uff09\uff0c\u5219\u663e\u793a\u6240\u6709 <acronym class=\"acronym\">SQL</acronym> \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\n        </p><p>\n        \u4e0e\u5927\u591a\u6570\u5176\u4ed6\u5143\u547d\u4ee4\u4e0d\u540c\uff0c\u6574\u4e2a\u884c\u7684\u5269\u4f59\u90e8\u5206\u59cb\u7ec8\u88ab\u89c6\u4e3a<code class=\"command\">\\help</code> \u7684\u53c2\u6570\uff0c\u53c2\u6570\u4e2d\u4e0d\u8fdb\u884c\u53d8\u91cf\u63d2\u503c\u6216\u53cd\u5f15\u53f7\u6269\u5c55\u3002\n        </p><div class=\"note\"><h3 class=\"title\">\u6ce8\u610f</h3><p>\n        \u4e3a\u4e86\u7b80\u5316\u8f93\u5165\uff0c\u7531\u591a\u4e2a\u5355\u8bcd\u7ec4\u6210\u7684\u547d\u4ee4\u4e0d\u9700\u8981\u52a0\u5f15\u53f7\u3002\u56e0\u6b64\uff0c\u53ef\u4ee5\u76f4\u63a5\u8f93\u5165<strong class=\"userinput\"><code>\\help alter table</code></strong>\u3002\n        </p></div></dd>", "source_revalidation": {"kind": "static-same-version-source-and-manual-replay", "audit": "wiki-audit-20261023", "runtime_rerun": false, "compared_fields": "entity membership and source-derived facts; presentation markup normalized", "source_revision": "5e06fe0541cd1f62a9fc1a66c342c19a2944ff3c98281bfbdb1d4a6d6d53fe2f", "previous_source_revision": "1bbbbf4133d426f0e4304010688d2984c30fb67df0cc3a61b3e37eb3f6f37833"}, "documentation_revision": {"inputs": [{"file": "app-psql.html", "kind": "same-version-reviewed-manual", "locale": "en", "sha256": "88aeb3d77ad0a535a6a363215f0ac18936c368ac157e694ad30fea3c1ee30218", "version": "19rc2"}, {"file": "app-psql.html", "kind": "same-version-reviewed-manual", "locale": "zh-Hans", "sha256": "7c244fc95f382349e2864e47925de5baa9fd870b49efe597bdf30e0ffc365f68", "version": "19rc2"}], "release": "19rc2", "source_revision": "pgdoc:b9f0e7232f60f380d642ac9b99226606c254b552", "runtime_remeasured": false}}, "20": {"facts": [{"label": "\u5ba2\u6237\u7aef", "value": "psql 20devel"}, {"label": "\u533a\u5206\u5927\u5c0f\u5199\u7684\u5199\u6cd5", "value": "\\help"}], "tables": [{"key": "spellings", "rows": [{"command": {"url": "/wiki/psql/cmd-68/?v=20", "text": "\\h"}, "modifiers": "\u6b64\u8bed\u6cd5\u7b7e\u540d\u672a\u5217\u51fa"}, {"command": {"url": "/wiki/psql/cmd-68-65-6c-70/?v=20", "text": "\\help"}, "modifiers": "\u6b64\u8bed\u6cd5\u7b7e\u540d\u672a\u5217\u51fa"}], "title": "\u672c\u7248\u624b\u518c\u4e2d\u7684\u5199\u6cd5", "columns": [{"key": "command", "label": "\u547d\u4ee4"}, {"key": "modifiers", "label": "\u624b\u518c\u4e2d\u7684\u540e\u7f00\u4fee\u9970\u7b26"}]}], "command": "\\help", "related": [{"url": "/wiki/psql/cmd-68/?v=20", "label": "\\h"}, {"url": "/wiki/tool/psql/?v=20", "label": "psql \u547d\u4ee4\u884c\u9009\u9879\u53ca\u5b8c\u6574\u624b\u518c"}], "release": {"ref": "https://ftp.postgresql.org/pub/snapshot/dev/postgresql-snapshot.tar.bz2", "label": "20devel", "major": "20", "channel": "devel", "manifest": {"major": "20", "release": "20devel", "source_url": "https://ftp.postgresql.org/pub/snapshot/dev/postgresql-snapshot.tar.bz2", "source_sha256": "49c73aa4c9cacef8ca979276a28ac416c08e9e54c9baee4ae5fd116a35fa13ac"}, "revision": "3cd0885bb4eccdbaac1a21177cc639e9031e54bd8ea6536c45224b5563354ce2", "evidence_kind": "English manual and source declarations", "source_sha256": "49c73aa4c9cacef8ca979276a28ac416c08e9e54c9baee4ae5fd116a35fa13ac"}, "sources": [{"url": "/docs/devel/app-psql.html#APP-PSQL-META-COMMAND-HELP", "file": "app-psql.html", "label": "20devel English manual \u00b7 app-psql.html", "anchor": "APP-PSQL-META-COMMAND-HELP", "sha256": "4040ccb7cbcb1a83a43c150f5b92ddd10ff8837fdc27835b1863d4a316645676"}], "zh_from": {"kind": "same-version-chinese-manual-with-source-derived-identity", "manual": {"url": "/zh/docs/devel/app-psql.html#APP-PSQL-META-COMMAND-HELP", "anchor": "APP-PSQL-META-COMMAND-HELP", "locale": "zh-Hans", "version": "20", "build_id": 111, "page_key": "app-psql.html", "extraction": "exact-definition", "source_hash": "98935f3e8a333e7201e42b7315bb9e09d62e0711037964568c16bd22ae183680", "fragment_sha256": "55e9d0e1a8907aaef85246c07fe378bf6ab581bd718b91e27a09cd1124898d27", "source_revision": "sha256:49c73aa4c9cacef8ca979276a28ac416c08e9e54c9baee4ae5fd116a35fa13ac", "translation_revision": "git:b1b500221dbe5437cfca004d6b04d3f6e422765d;html-sha256:98c980963b401d40bd50df72b909e7523e3148b8fdb48edd897de2efb67e5235", "translated_from_revision": "sha256:49c73aa4c9cacef8ca979276a28ac416c08e9e54c9baee4ae5fd116a35fa13ac"}, "body_sha256": "075838e7e586b8aee6ecacefa0a0c796767ed3e3fa7b9c0c63a4fb9783b64c3a", "runtime_rerun": false, "authored_translation": "source-derived-identity", "source_facts_revision": "3cd0885bb4eccdbaac1a21177cc639e9031e54bd8ea6536c45224b5563354ce2"}, "facts_zh": [{"label": "\u5ba2\u6237\u7aef", "value": "psql 20devel"}, {"label": "\u533a\u5206\u5927\u5c0f\u5199\u7684\u5199\u6cd5", "value": "\\help"}], "sections": [], "center_zh": {"title": "\\help", "locale": "zh-Hans", "source": {"key": "cmd-68-65-6c-70", "locale": "zh-Hans", "version": "20", "text_hash": "6cebba633e9a7b28bd2c432aebf404db1414498b43844e532f7ea8672a2d58c3", "collection": "psql", "dataset_hash": "7c31b524dfe136022d39a6ae8dcfac6b3bbd5f8fdaf422536599981252aff0c9", "source_database": "center", "source_revision": "3cd0885bb4eccdbaac1a21177cc639e9031e54bd8ea6536c45224b5563354ce2"}, "payload": {"facts": [{"label": "\u5ba2\u6237\u7aef", "value": "psql 20devel"}, {"label": "\u533a\u5206\u5927\u5c0f\u5199\u7684\u5199\u6cd5", "value": "\\help"}], "tables": [{"key": "spellings", "rows": [{"command": {"url": "/wiki/psql/cmd-68/?v=20", "text": "\\h"}, "modifiers": "\u6b64\u8bed\u6cd5\u7b7e\u540d\u672a\u5217\u51fa"}, {"command": {"url": "/wiki/psql/cmd-68-65-6c-70/?v=20", "text": "\\help"}, "modifiers": "\u6b64\u8bed\u6cd5\u7b7e\u540d\u672a\u5217\u51fa"}], "title": "\u672c\u7248\u624b\u518c\u4e2d\u7684\u5199\u6cd5", "columns": [{"key": "command", "label": "\u547d\u4ee4"}, {"key": "modifiers", "label": "\u624b\u518c\u4e2d\u7684\u540e\u7f00\u4fee\u9970\u7b26"}]}], "zh_from": {"kind": "same-version-chinese-manual-with-source-derived-identity", "manual": {"url": "/zh/docs/devel/app-psql.html#APP-PSQL-META-COMMAND-HELP", "anchor": "APP-PSQL-META-COMMAND-HELP", "locale": "zh-Hans", "version": "20", "build_id": 111, "page_key": "app-psql.html", "extraction": "exact-definition", "source_hash": "98935f3e8a333e7201e42b7315bb9e09d62e0711037964568c16bd22ae183680", "fragment_sha256": "55e9d0e1a8907aaef85246c07fe378bf6ab581bd718b91e27a09cd1124898d27", "source_revision": "sha256:49c73aa4c9cacef8ca979276a28ac416c08e9e54c9baee4ae5fd116a35fa13ac", "translation_revision": "git:b1b500221dbe5437cfca004d6b04d3f6e422765d;html-sha256:98c980963b401d40bd50df72b909e7523e3148b8fdb48edd897de2efb67e5235", "translated_from_revision": "sha256:49c73aa4c9cacef8ca979276a28ac416c08e9e54c9baee4ae5fd116a35fa13ac"}, "body_sha256": "075838e7e586b8aee6ecacefa0a0c796767ed3e3fa7b9c0c63a4fb9783b64c3a", "runtime_rerun": false, "authored_translation": "source-derived-identity", "source_facts_revision": "3cd0885bb4eccdbaac1a21177cc639e9031e54bd8ea6536c45224b5563354ce2"}, "sections": [], "description_zh": "\u7ed9\u51fa\u6307\u5b9a SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\u5982\u679c\u672a\u6307\u5b9a command \uff0c\u5219 psql \u5c06\u5217\u51fa\u6240\u6709\u53ef\u7528\u8bed\u6cd5\u5e2e\u52a9\u7684\u547d\u4ee4\u3002\u5982\u679c command \u662f\u661f\u53f7\uff08 * \uff09\uff0c\u5219\u663e\u793a\u6240\u6709 SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002 \u4e0e\u5927\u591a\u6570\u5176\u4ed6\u5143\u547d\u4ee4\u4e0d\u540c\uff0c\u6574\u4e2a\u884c\u7684\u5269\u4f59\u90e8\u5206\u59cb\u7ec8\u88ab\u89c6\u4e3a \\help \u7684\u53c2\u6570\uff0c\u53c2\u6570\u4e2d\u4e0d\u8fdb\u884c\u53d8\u91cf\u63d2\u503c\u6216\u53cd\u5f15\u53f7\u6269\u5c55\u3002 \u6ce8\u610f \u4e3a\u4e86\u7b80\u5316\u8f93\u5165\uff0c\u7531\u591a\u4e2a\u5355\u8bcd\u7ec4\u6210\u7684\u547d\u4ee4\u4e0d\u9700\u8981\u52a0\u5f15\u53f7\u3002\u56e0\u6b64\uff0c\u53ef\u4ee5\u76f4\u63a5\u8f93\u5165 \\help alter table \u3002", "description_zh_html": "<p>psql \u547d\u4ee4 \\h or \\help [ command ]\u3002</p><h3>\u540c\u7248\u672c\u4e2d\u6587\u624b\u518c\u5b9a\u4e49</h3><dd><p>\n        \u7ed9\u51fa\u6307\u5b9a <acronym class=\"acronym\">SQL</acronym> \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\u5982\u679c\u672a\u6307\u5b9a <em class=\"replaceable\"><code>command</code></em>\uff0c\u5219 <span class=\"application\">psql</span> \u5c06\u5217\u51fa\u6240\u6709\u53ef\u7528\u8bed\u6cd5\u5e2e\u52a9\u7684\u547d\u4ee4\u3002\u5982\u679c <em class=\"replaceable\"><code>command</code></em> \u662f\u661f\u53f7\uff08<code class=\"literal\">*</code>\uff09\uff0c\u5219\u663e\u793a\u6240\u6709 <acronym class=\"acronym\">SQL</acronym> \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\n        </p><p>\n        \u4e0e\u5927\u591a\u6570\u5176\u4ed6\u5143\u547d\u4ee4\u4e0d\u540c\uff0c\u6574\u4e2a\u884c\u7684\u5269\u4f59\u90e8\u5206\u59cb\u7ec8\u88ab\u89c6\u4e3a<code class=\"command\">\\help</code> \u7684\u53c2\u6570\uff0c\u53c2\u6570\u4e2d\u4e0d\u8fdb\u884c\u53d8\u91cf\u63d2\u503c\u6216\u53cd\u5f15\u53f7\u6269\u5c55\u3002\n        </p><div class=\"note\"><h3 class=\"title\">\u6ce8\u610f</h3><p>\n        \u4e3a\u4e86\u7b80\u5316\u8f93\u5165\uff0c\u7531\u591a\u4e2a\u5355\u8bcd\u7ec4\u6210\u7684\u547d\u4ee4\u4e0d\u9700\u8981\u52a0\u5f15\u53f7\u3002\u56e0\u6b64\uff0c\u53ef\u4ee5\u76f4\u63a5\u8f93\u5165<strong class=\"userinput\"><code>\\help alter table</code></strong>\u3002\n        </p></div></dd><p><a href=\"/zh/docs/devel/app-psql.html#APP-PSQL-META-COMMAND-HELP\">\u67e5\u770b\u5b8c\u6574\u4e2d\u6587\u624b\u518c\u4e0e\u4e0a\u4e0b\u6587</a>\u3002</p>"}, "summary": "\u7ed9\u51fa\u6307\u5b9a SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\u5982\u679c\u672a\u6307\u5b9a command \uff0c\u5219 psql \u5c06\u5217\u51fa\u6240\u6709\u53ef\u7528\u8bed\u6cd5\u5e2e\u52a9\u7684\u547d\u4ee4\u3002\u5982\u679c command \u662f\u661f\u53f7\uff08 * \uff09\uff0c\u5219\u663e\u793a\u6240\u6709 SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002 \u4e0e\u5927\u591a\u6570\u5176\u4ed6\u5143\u547d\u4ee4\u4e0d\u540c\uff0c\u6574\u4e2a\u884c\u7684\u5269\u4f59\u90e8\u5206\u59cb\u7ec8\u88ab\u89c6\u4e3a \\help \u7684\u53c2\u6570\uff0c\u53c2\u6570\u4e2d\u4e0d\u8fdb\u884c\u53d8\u91cf\u63d2\u503c\u6216\u53cd\u5f15\u53f7\u6269\u5c55\u3002 \u6ce8\u610f \u4e3a\u4e86\u7b80\u5316\u8f93\u5165\uff0c\u7531\u591a\u4e2a\u5355\u8bcd\u7ec4\u6210\u7684\u547d\u4ee4\u4e0d\u9700\u8981\u52a0\u5f15\u53f7\u3002\u56e0\u6b64\uff0c\u53ef\u4ee5\u76f4\u63a5\u8f93\u5165 \\help alter table \u3002", "version": "20", "link_map": {"/zh/docs/devel/app-psql.html#APP-PSQL-META-COMMAND-HELP": "/docs/devel/app-psql.html#APP-PSQL-META-COMMAND-HELP"}, "body_html": "<p>psql \u547d\u4ee4 \\h or \\help [ command ]\u3002</p><h3>\u540c\u7248\u672c\u4e2d\u6587\u624b\u518c\u5b9a\u4e49</h3><dd><p>\n        \u7ed9\u51fa\u6307\u5b9a <acronym>SQL</acronym> \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\u5982\u679c\u672a\u6307\u5b9a <em><code>command</code></em>\uff0c\u5219 <span>psql</span> \u5c06\u5217\u51fa\u6240\u6709\u53ef\u7528\u8bed\u6cd5\u5e2e\u52a9\u7684\u547d\u4ee4\u3002\u5982\u679c <em><code>command</code></em> \u662f\u661f\u53f7\uff08<code>*</code>\uff09\uff0c\u5219\u663e\u793a\u6240\u6709 <acronym>SQL</acronym> \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\n        </p><p>\n        \u4e0e\u5927\u591a\u6570\u5176\u4ed6\u5143\u547d\u4ee4\u4e0d\u540c\uff0c\u6574\u4e2a\u884c\u7684\u5269\u4f59\u90e8\u5206\u59cb\u7ec8\u88ab\u89c6\u4e3a<code>\\help</code> \u7684\u53c2\u6570\uff0c\u53c2\u6570\u4e2d\u4e0d\u8fdb\u884c\u53d8\u91cf\u63d2\u503c\u6216\u53cd\u5f15\u53f7\u6269\u5c55\u3002\n        </p><div><h3>\u6ce8\u610f</h3><p>\n        \u4e3a\u4e86\u7b80\u5316\u8f93\u5165\uff0c\u7531\u591a\u4e2a\u5355\u8bcd\u7ec4\u6210\u7684\u547d\u4ee4\u4e0d\u9700\u8981\u52a0\u5f15\u53f7\u3002\u56e0\u6b64\uff0c\u53ef\u4ee5\u76f4\u63a5\u8f93\u5165<strong><code>\\help alter table</code></strong>\u3002\n        </p></div></dd><p><a href=\"/zh/docs/devel/app-psql.html#APP-PSQL-META-COMMAND-HELP\" rel=\"nofollow\">\u67e5\u770b\u5b8c\u6574\u4e2d\u6587\u624b\u518c\u4e0e\u4e0a\u4e0b\u6587</a>\u3002</p>", "body_sha256": "50c1d59edc73411c44a904b90340500b5701bff43a20078df43766ce5e041a40", "content_hash": "6cebba633e9a7b28bd2c432aebf404db1414498b43844e532f7ea8672a2d58c3", "source_database": "center", "source_revision": "3cd0885bb4eccdbaac1a21177cc639e9031e54bd8ea6536c45224b5563354ce2"}, "modifiers": [], "signature": "\\h or \\help [ command ]", "spellings": ["\\h", "\\help"], "tables_zh": [{"key": "spellings", "rows": [{"command": {"url": "/wiki/psql/cmd-68/?v=20", "text": "\\h"}, "modifiers": "\u6b64\u8bed\u6cd5\u7b7e\u540d\u672a\u5217\u51fa"}, {"command": {"url": "/wiki/psql/cmd-68-65-6c-70/?v=20", "text": "\\help"}, "modifiers": "\u6b64\u8bed\u6cd5\u7b7e\u540d\u672a\u5217\u51fa"}], "title": "\u672c\u7248\u624b\u518c\u4e2d\u7684\u5199\u6cd5", "columns": [{"key": "command", "label": "\u547d\u4ee4"}, {"key": "modifiers", "label": "\u624b\u518c\u4e2d\u7684\u540e\u7f00\u4fee\u9970\u7b26"}]}], "description": ["\u7ed9\u51fa\u6307\u5b9a SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\u5982\u679c\u672a\u6307\u5b9a command \uff0c\u5219 psql \u5c06\u5217\u51fa\u6240\u6709\u53ef\u7528\u8bed\u6cd5\u5e2e\u52a9\u7684\u547d\u4ee4\u3002\u5982\u679c command \u662f\u661f\u53f7\uff08 * \uff09\uff0c\u5219\u663e\u793a\u6240\u6709 SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002 \u4e0e\u5927\u591a\u6570\u5176\u4ed6\u5143\u547d\u4ee4\u4e0d\u540c\uff0c\u6574\u4e2a\u884c\u7684\u5269\u4f59\u90e8\u5206\u59cb\u7ec8\u88ab\u89c6\u4e3a \\help \u7684\u53c2\u6570\uff0c\u53c2\u6570\u4e2d\u4e0d\u8fdb\u884c\u53d8\u91cf\u63d2\u503c\u6216\u53cd\u5f15\u53f7\u6269\u5c55\u3002 \u6ce8\u610f \u4e3a\u4e86\u7b80\u5316\u8f93\u5165\uff0c\u7531\u591a\u4e2a\u5355\u8bcd\u7ec4\u6210\u7684\u547d\u4ee4\u4e0d\u9700\u8981\u52a0\u5f15\u53f7\u3002\u56e0\u6b64\uff0c\u53ef\u4ee5\u76f4\u63a5\u8f93\u5165 \\help alter table \u3002"], "manual_html": "", "manual_path": "app-psql.html#APP-PSQL-META-COMMAND-HELP", "sections_zh": [], "localization": {"status": "complete", "sources": [{"url": "/docs/devel/app-psql.html", "method": "same-major semantic node", "sha256": "1590b6e290ad21fe3ac1c1549628841ae426d1cd07a8f808789207878dbee5ab", "language": "zh", "matched_nodes": ["#APP-PSQL/div[5]/div[1]/dl[0]/dd[43]/div[1]/h3[0]", "#APP-PSQL/div[7]/div[3]/div[11]/dl[0]/dd[131]/div[2]/p[1]", "#APP-PSQL/div[7]/div[3]/div[11]/dl[0]/dd[131]/p[0]", "#APP-PSQL/div[7]/div[3]/div[11]/dl[0]/dd[131]/p[1]", "#APP-PSQL/div[7]/div[3]/div[11]/dl[0]/dt[130]"]}], "language": "zh", "original_text": {"/summary": "Gives syntax help on the specified SQL command. If command is not specified, then psql will list all the commands for which syntax help is available. If command is an asterisk ( * ), then syntax help on all SQL commands is shown.", "/category": "Scripting and assistance", "/versions/20/description/0": "Gives syntax help on the specified SQL command. If command is not specified, then psql will list all the commands for which syntax help is available. If command is an asterisk ( * ), then syntax help on all SQL commands is shown.", "/versions/20/facts/0/label": "Client", "/versions/20/facts/1/label": "Case-sensitive spelling", "/versions/20/tables/0/title": "Spellings in this manual definition", "/versions/20/related/1/label": "psql command-line options and complete manual", "/versions/20/tables/0/columns/0/label": "Command", "/versions/20/tables/0/columns/1/label": "Documented suffix modifiers", "/versions/20/tables/0/rows/0/modifiers": "None listed in this signature", "/versions/20/tables/0/rows/1/modifiers": "None listed in this signature"}, "fallback_fields": [], "source_language": "en", "original_snapshot_sha256": "fc22aa16e23800234cefa269c204a0125a86ba258b24bf39f14e1b66b957143e", "canonical_center_text_hash": "6cebba633e9a7b28bd2c432aebf404db1414498b43844e532f7ea8672a2d58c3"}, "description_zh": "\u7ed9\u51fa\u6307\u5b9a SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\u5982\u679c\u672a\u6307\u5b9a command \uff0c\u5219 psql \u5c06\u5217\u51fa\u6240\u6709\u53ef\u7528\u8bed\u6cd5\u5e2e\u52a9\u7684\u547d\u4ee4\u3002\u5982\u679c command \u662f\u661f\u53f7\uff08 * \uff09\uff0c\u5219\u663e\u793a\u6240\u6709 SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002 \u4e0e\u5927\u591a\u6570\u5176\u4ed6\u5143\u547d\u4ee4\u4e0d\u540c\uff0c\u6574\u4e2a\u884c\u7684\u5269\u4f59\u90e8\u5206\u59cb\u7ec8\u88ab\u89c6\u4e3a \\help \u7684\u53c2\u6570\uff0c\u53c2\u6570\u4e2d\u4e0d\u8fdb\u884c\u53d8\u91cf\u63d2\u503c\u6216\u53cd\u5f15\u53f7\u6269\u5c55\u3002 \u6ce8\u610f \u4e3a\u4e86\u7b80\u5316\u8f93\u5165\uff0c\u7531\u591a\u4e2a\u5355\u8bcd\u7ec4\u6210\u7684\u547d\u4ee4\u4e0d\u9700\u8981\u52a0\u5f15\u53f7\u3002\u56e0\u6b64\uff0c\u53ef\u4ee5\u76f4\u63a5\u8f93\u5165 \\help alter table \u3002", "comparison_data": {"modifiers": [], "signature": "\\h or \\help [ command ]", "spellings": ["\\h", "\\help"], "definition": "Gives syntax help on the specified SQL command. If command is not specified, then psql will list all the commands for which syntax help is available. If command is an asterisk ( * ), then syntax help on all SQL commands is shown. Unlike most other meta-commands, the entire remainder of the line is always taken to be the argument(s) of \\help , and neither variable interpolation nor backquote expansion are performed in the arguments. Note To simplify typing, commands that consists of several words do not have to be quoted. Thus it is fine to type \\help alter table ."}, "comparison_hash": "b577574b2085fe90e006df02a39f4541a330b0431267a9fe13837edb82fa8cd5", "manual_language": "zh", "description_zh_html": "<p>psql \u547d\u4ee4 \\h or \\help [ command ]\u3002</p><h3>\u540c\u7248\u672c\u4e2d\u6587\u624b\u518c\u5b9a\u4e49</h3><dd><p>\n        \u7ed9\u51fa\u6307\u5b9a <acronym>SQL</acronym> \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\u5982\u679c\u672a\u6307\u5b9a <em><code>command</code></em>\uff0c\u5219 <span>psql</span> \u5c06\u5217\u51fa\u6240\u6709\u53ef\u7528\u8bed\u6cd5\u5e2e\u52a9\u7684\u547d\u4ee4\u3002\u5982\u679c <em><code>command</code></em> \u662f\u661f\u53f7\uff08<code>*</code>\uff09\uff0c\u5219\u663e\u793a\u6240\u6709 <acronym>SQL</acronym> \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\n        </p><p>\n        \u4e0e\u5927\u591a\u6570\u5176\u4ed6\u5143\u547d\u4ee4\u4e0d\u540c\uff0c\u6574\u4e2a\u884c\u7684\u5269\u4f59\u90e8\u5206\u59cb\u7ec8\u88ab\u89c6\u4e3a<code>\\help</code> \u7684\u53c2\u6570\uff0c\u53c2\u6570\u4e2d\u4e0d\u8fdb\u884c\u53d8\u91cf\u63d2\u503c\u6216\u53cd\u5f15\u53f7\u6269\u5c55\u3002\n        </p><div><h3>\u6ce8\u610f</h3><p>\n        \u4e3a\u4e86\u7b80\u5316\u8f93\u5165\uff0c\u7531\u591a\u4e2a\u5355\u8bcd\u7ec4\u6210\u7684\u547d\u4ee4\u4e0d\u9700\u8981\u52a0\u5f15\u53f7\u3002\u56e0\u6b64\uff0c\u53ef\u4ee5\u76f4\u63a5\u8f93\u5165<strong><code>\\help alter table</code></strong>\u3002\n        </p></div></dd><p><a href=\"/zh/docs/devel/app-psql.html#APP-PSQL-META-COMMAND-HELP\" rel=\"nofollow\">\u67e5\u770b\u5b8c\u6574\u4e2d\u6587\u624b\u518c\u4e0e\u4e0a\u4e0b\u6587</a>\u3002</p>", "source_revalidation": {"kind": "static-same-version-source-and-manual-replay", "audit": "wiki-audit-20261023", "runtime_rerun": false, "compared_fields": "entity membership and source-derived facts; presentation markup normalized", "source_revision": "3cd0885bb4eccdbaac1a21177cc639e9031e54bd8ea6536c45224b5563354ce2", "previous_source_revision": "2eba5e0fd4c3bffb2803247b6cd537878e9d6ee5a6dfbe3c50ece8b421b80918"}}}}, "snapshot": {"lang": "zh", "facts": [{"label": "\u5ba2\u6237\u7aef", "value": "psql 18.7"}, {"label": "\u533a\u5206\u5927\u5c0f\u5199\u7684\u5199\u6cd5", "value": "\\help"}], "tables": [{"key": "spellings", "rows": [{"command": {"url": "/wiki/psql/cmd-68/?v=18", "text": "\\h"}, "modifiers": "\u6b64\u8bed\u6cd5\u7b7e\u540d\u672a\u5217\u51fa"}, {"command": {"url": "/wiki/psql/cmd-68-65-6c-70/?v=18", "text": "\\help"}, "modifiers": "\u6b64\u8bed\u6cd5\u7b7e\u540d\u672a\u5217\u51fa"}], "title": "\u672c\u7248\u624b\u518c\u4e2d\u7684\u5199\u6cd5", "columns": [{"key": "command", "label": "\u547d\u4ee4"}, {"key": "modifiers", "label": "\u624b\u518c\u4e2d\u7684\u540e\u7f00\u4fee\u9970\u7b26"}]}], "command": "\\help", "related": [{"url": "/wiki/psql/cmd-68/?v=18", "label": "\\h"}, {"url": "/wiki/tool/psql/?v=18", "label": "psql \u547d\u4ee4\u884c\u9009\u9879\u53ca\u5b8c\u6574\u624b\u518c"}], "release": {"ref": "https://ftp.postgresql.org/pub/source/v18.7/postgresql-18.7.tar.bz2", "label": "18.7", "major": "18", "channel": "stable", "manifest": {"major": "18", "release": "18.7", "source_url": "https://ftp.postgresql.org/pub/source/v18.7/postgresql-18.7.tar.bz2", "source_sha256": "441dfae4280cae3e0425e5f876f80559fb0731c140f1aae22b3e5a54d0411bfd"}, "revision": "1b2d62b4845aa46374f2cb680f95d3392322cc8128646992ae4e18d0e7084915", "evidence_kind": "English manual and source declarations", "source_sha256": "441dfae4280cae3e0425e5f876f80559fb0731c140f1aae22b3e5a54d0411bfd"}, "sources": [{"url": "/docs/18/app-psql.html#APP-PSQL-META-COMMAND-HELP", "file": "app-psql.html", "label": "18.7 English manual \u00b7 app-psql.html", "anchor": "APP-PSQL-META-COMMAND-HELP", "sha256": "af50448485df02bdef2b72b8347192ba029c7082b8d0392ecb17db44ad533aaf"}], "zh_from": "same-version-manual", "facts_zh": [{"label": "\u5ba2\u6237\u7aef", "value": "psql 18.7"}, {"label": "\u533a\u5206\u5927\u5c0f\u5199\u7684\u5199\u6cd5", "value": "\\help"}], "sections": [], "center_zh": {"locale": "zh-Hans", "payload": {"description_zh": "\u7ed9\u51fa\u6307\u5b9a SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\u5982\u679c\u672a\u6307\u5b9a command \uff0c\u5219 psql \u5c06\u5217\u51fa\u6240\u6709\u53ef\u7528\u8bed\u6cd5\u5e2e\u52a9\u7684\u547d\u4ee4\u3002\u5982\u679c command \u662f\u661f\u53f7\uff08 * \uff09\uff0c\u5219\u663e\u793a\u6240\u6709 SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002", "description_zh_html": "<dd><p>\n        \u7ed9\u51fa\u6307\u5b9a <acronym class=\"acronym\">SQL</acronym> \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\u5982\u679c\u672a\u6307\u5b9a <em class=\"replaceable\"><code>command</code></em>\uff0c\u5219 <span class=\"application\">psql</span> \u5c06\u5217\u51fa\u6240\u6709\u53ef\u7528\u8bed\u6cd5\u5e2e\u52a9\u7684\u547d\u4ee4\u3002\u5982\u679c <em class=\"replaceable\"><code>command</code></em> \u662f\u661f\u53f7\uff08<code class=\"literal\">*</code>\uff09\uff0c\u5219\u663e\u793a\u6240\u6709 <acronym class=\"acronym\">SQL</acronym> \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\n        </p><p>\n        \u4e0e\u5927\u591a\u6570\u5176\u4ed6\u5143\u547d\u4ee4\u4e0d\u540c\uff0c\u6574\u4e2a\u884c\u7684\u5269\u4f59\u90e8\u5206\u59cb\u7ec8\u88ab\u89c6\u4e3a<code class=\"command\">\\help</code> \u7684\u53c2\u6570\uff0c\u53c2\u6570\u4e2d\u4e0d\u8fdb\u884c\u53d8\u91cf\u63d2\u503c\u6216\u53cd\u5f15\u53f7\u6269\u5c55\u3002\n        </p><div class=\"note\"><h3 class=\"title\">\u6ce8\u610f</h3><p>\n        \u4e3a\u4e86\u7b80\u5316\u8f93\u5165\uff0c\u7531\u591a\u4e2a\u5355\u8bcd\u7ec4\u6210\u7684\u547d\u4ee4\u4e0d\u9700\u8981\u52a0\u5f15\u53f7\u3002\u56e0\u6b64\uff0c\u53ef\u4ee5\u76f4\u63a5\u8f93\u5165<strong class=\"userinput\"><code>\\help alter table</code></strong>\u3002\n        </p></div></dd>"}, "summary": "\u7ed9\u51fa\u6307\u5b9a SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\u5982\u679c\u672a\u6307\u5b9a command \uff0c\u5219 psql \u5c06\u5217\u51fa\u6240\u6709\u53ef\u7528\u8bed\u6cd5\u5e2e\u52a9\u7684\u547d\u4ee4\u3002\u5982\u679c command \u662f\u661f\u53f7\uff08 * \uff09\uff0c\u5219\u663e\u793a\u6240\u6709 SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002", "body_html": "<dd><p>\n        \u7ed9\u51fa\u6307\u5b9a <acronym class=\"acronym\">SQL</acronym> \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\u5982\u679c\u672a\u6307\u5b9a <em class=\"replaceable\"><code>command</code></em>\uff0c\u5219 <span class=\"application\">psql</span> \u5c06\u5217\u51fa\u6240\u6709\u53ef\u7528\u8bed\u6cd5\u5e2e\u52a9\u7684\u547d\u4ee4\u3002\u5982\u679c <em class=\"replaceable\"><code>command</code></em> \u662f\u661f\u53f7\uff08<code class=\"literal\">*</code>\uff09\uff0c\u5219\u663e\u793a\u6240\u6709 <acronym class=\"acronym\">SQL</acronym> \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\n        </p><p>\n        \u4e0e\u5927\u591a\u6570\u5176\u4ed6\u5143\u547d\u4ee4\u4e0d\u540c\uff0c\u6574\u4e2a\u884c\u7684\u5269\u4f59\u90e8\u5206\u59cb\u7ec8\u88ab\u89c6\u4e3a<code class=\"command\">\\help</code> \u7684\u53c2\u6570\uff0c\u53c2\u6570\u4e2d\u4e0d\u8fdb\u884c\u53d8\u91cf\u63d2\u503c\u6216\u53cd\u5f15\u53f7\u6269\u5c55\u3002\n        </p><div class=\"note\"><h3 class=\"title\">\u6ce8\u610f</h3><p>\n        \u4e3a\u4e86\u7b80\u5316\u8f93\u5165\uff0c\u7531\u591a\u4e2a\u5355\u8bcd\u7ec4\u6210\u7684\u547d\u4ee4\u4e0d\u9700\u8981\u52a0\u5f15\u53f7\u3002\u56e0\u6b64\uff0c\u53ef\u4ee5\u76f4\u63a5\u8f93\u5165<strong class=\"userinput\"><code>\\help alter table</code></strong>\u3002\n        </p></div></dd>", "body_sha256": "55e9d0e1a8907aaef85246c07fe378bf6ab581bd718b91e27a09cd1124898d27", "content_hash": "bb233ce1e5eeac07b2fb06da70410a1956cfab7eb6c83b02e5f3780e02ed9d86", "source_revision": "pgdoc:b9f0e7232f60f380d642ac9b99226606c254b552", "definition_version": "18", "documentation_release": "18.7"}, "modifiers": [], "signature": "\\h or \\help [ command ]", "spellings": ["\\h", "\\help"], "tables_zh": [{"key": "spellings", "rows": [{"command": {"url": "/wiki/psql/cmd-68/?v=18", "text": "\\h"}, "modifiers": "\u6b64\u8bed\u6cd5\u7b7e\u540d\u672a\u5217\u51fa"}, {"command": {"url": "/wiki/psql/cmd-68-65-6c-70/?v=18", "text": "\\help"}, "modifiers": "\u6b64\u8bed\u6cd5\u7b7e\u540d\u672a\u5217\u51fa"}], "title": "\u672c\u7248\u624b\u518c\u4e2d\u7684\u5199\u6cd5", "columns": [{"key": "command", "label": "\u547d\u4ee4"}, {"key": "modifiers", "label": "\u624b\u518c\u4e2d\u7684\u540e\u7f00\u4fee\u9970\u7b26"}]}], "related_zh": [{"url": "/wiki/psql/cmd-68/?v=18", "label": "\\h"}, {"url": "/wiki/tool/psql/?v=18", "label": "psql \u547d\u4ee4\u884c\u9009\u9879\u53ca\u5b8c\u6574\u624b\u518c"}], "description": ["\u7ed9\u51fa\u6307\u5b9a SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\u5982\u679c\u672a\u6307\u5b9a command \uff0c\u5219 psql \u5c06\u5217\u51fa\u6240\u6709\u53ef\u7528\u8bed\u6cd5\u5e2e\u52a9\u7684\u547d\u4ee4\u3002\u5982\u679c command \u662f\u661f\u53f7\uff08 * \uff09\uff0c\u5219\u663e\u793a\u6240\u6709 SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002"], "manual_html": "<dd><p>\n        \u7ed9\u51fa\u6307\u5b9a <acronym class=\"acronym\">SQL</acronym> \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\u5982\u679c\u672a\u6307\u5b9a <em class=\"replaceable\"><code>command</code></em>\uff0c\u5219 <span class=\"application\">psql</span> \u5c06\u5217\u51fa\u6240\u6709\u53ef\u7528\u8bed\u6cd5\u5e2e\u52a9\u7684\u547d\u4ee4\u3002\u5982\u679c <em class=\"replaceable\"><code>command</code></em> \u662f\u661f\u53f7\uff08<code class=\"literal\">*</code>\uff09\uff0c\u5219\u663e\u793a\u6240\u6709 <acronym class=\"acronym\">SQL</acronym> \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\n        </p><p>\n        \u4e0e\u5927\u591a\u6570\u5176\u4ed6\u5143\u547d\u4ee4\u4e0d\u540c\uff0c\u6574\u4e2a\u884c\u7684\u5269\u4f59\u90e8\u5206\u59cb\u7ec8\u88ab\u89c6\u4e3a<code class=\"command\">\\help</code> \u7684\u53c2\u6570\uff0c\u53c2\u6570\u4e2d\u4e0d\u8fdb\u884c\u53d8\u91cf\u63d2\u503c\u6216\u53cd\u5f15\u53f7\u6269\u5c55\u3002\n        </p><div class=\"note\"><h3 class=\"title\">\u6ce8\u610f</h3><p>\n        \u4e3a\u4e86\u7b80\u5316\u8f93\u5165\uff0c\u7531\u591a\u4e2a\u5355\u8bcd\u7ec4\u6210\u7684\u547d\u4ee4\u4e0d\u9700\u8981\u52a0\u5f15\u53f7\u3002\u56e0\u6b64\uff0c\u53ef\u4ee5\u76f4\u63a5\u8f93\u5165<strong class=\"userinput\"><code>\\help alter table</code></strong>\u3002\n        </p></div></dd>", "manual_path": "app-psql.html#APP-PSQL-META-COMMAND-HELP", "sections_zh": [], "localization": {"status": "same-version-reviewed-manual", "language": "zh", "source_language": "en", "source_revision": "pgdoc:b9f0e7232f60f380d642ac9b99226606c254b552", "documentation_release": "18.7"}, "description_zh": "\u7ed9\u51fa\u6307\u5b9a SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\u5982\u679c\u672a\u6307\u5b9a command \uff0c\u5219 psql \u5c06\u5217\u51fa\u6240\u6709\u53ef\u7528\u8bed\u6cd5\u5e2e\u52a9\u7684\u547d\u4ee4\u3002\u5982\u679c command \u662f\u661f\u53f7\uff08 * \uff09\uff0c\u5219\u663e\u793a\u6240\u6709 SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002", "comparison_data": {"modifiers": [], "signature": "\\h or \\help [ command ]", "spellings": ["\\h", "\\help"], "definition": "Gives syntax help on the specified SQL command. If command is not specified, then psql will list all the commands for which syntax help is available. If command is an asterisk ( * ), then syntax help on all SQL commands is shown. Unlike most other meta-commands, the entire remainder of the line is always taken to be the argument(s) of \\help , and neither variable interpolation nor backquote expansion are performed in the arguments. Note To simplify typing, commands that consists of several words do not have to be quoted. Thus it is fine to type \\help alter table ."}, "comparison_hash": "b577574b2085fe90e006df02a39f4541a330b0431267a9fe13837edb82fa8cd5", "manual_language": "zh", "description_zh_html": "<dd><p>\n        \u7ed9\u51fa\u6307\u5b9a <acronym class=\"acronym\">SQL</acronym> \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\u5982\u679c\u672a\u6307\u5b9a <em class=\"replaceable\"><code>command</code></em>\uff0c\u5219 <span class=\"application\">psql</span> \u5c06\u5217\u51fa\u6240\u6709\u53ef\u7528\u8bed\u6cd5\u5e2e\u52a9\u7684\u547d\u4ee4\u3002\u5982\u679c <em class=\"replaceable\"><code>command</code></em> \u662f\u661f\u53f7\uff08<code class=\"literal\">*</code>\uff09\uff0c\u5219\u663e\u793a\u6240\u6709 <acronym class=\"acronym\">SQL</acronym> \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\n        </p><p>\n        \u4e0e\u5927\u591a\u6570\u5176\u4ed6\u5143\u547d\u4ee4\u4e0d\u540c\uff0c\u6574\u4e2a\u884c\u7684\u5269\u4f59\u90e8\u5206\u59cb\u7ec8\u88ab\u89c6\u4e3a<code class=\"command\">\\help</code> \u7684\u53c2\u6570\uff0c\u53c2\u6570\u4e2d\u4e0d\u8fdb\u884c\u53d8\u91cf\u63d2\u503c\u6216\u53cd\u5f15\u53f7\u6269\u5c55\u3002\n        </p><div class=\"note\"><h3 class=\"title\">\u6ce8\u610f</h3><p>\n        \u4e3a\u4e86\u7b80\u5316\u8f93\u5165\uff0c\u7531\u591a\u4e2a\u5355\u8bcd\u7ec4\u6210\u7684\u547d\u4ee4\u4e0d\u9700\u8981\u52a0\u5f15\u53f7\u3002\u56e0\u6b64\uff0c\u53ef\u4ee5\u76f4\u63a5\u8f93\u5165<strong class=\"userinput\"><code>\\help alter table</code></strong>\u3002\n        </p></div></dd>", "documentation_revision": {"inputs": [{"file": "app-psql.html", "kind": "same-version-reviewed-manual", "locale": "en", "sha256": "af50448485df02bdef2b72b8347192ba029c7082b8d0392ecb17db44ad533aaf", "version": "18.7"}, {"file": "app-psql.html", "kind": "same-version-reviewed-manual", "locale": "zh-Hans", "sha256": "cb475c53a16d9e06358f5e6c9c5649645db92568cfd319f230c62c9f57ae090b", "version": "18.7"}], "release": "18.7", "source_revision": "pgdoc:b9f0e7232f60f380d642ac9b99226606c254b552", "runtime_remeasured": false}, "center_zh_rendered": "<dl><dd><p>\n        \u7ed9\u51fa\u6307\u5b9a SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\u5982\u679c\u672a\u6307\u5b9a <em class=\"replaceable\"><code>command</code></em>\uff0c\u5219 <span class=\"application\">psql</span> \u5c06\u5217\u51fa\u6240\u6709\u53ef\u7528\u8bed\u6cd5\u5e2e\u52a9\u7684\u547d\u4ee4\u3002\u5982\u679c <em class=\"replaceable\"><code>command</code></em> \u662f\u661f\u53f7\uff08<code class=\"literal\">*</code>\uff09\uff0c\u5219\u663e\u793a\u6240\u6709 SQL \u547d\u4ee4\u7684\u8bed\u6cd5\u5e2e\u52a9\u3002\n        </p><p>\n        \u4e0e\u5927\u591a\u6570\u5176\u4ed6\u5143\u547d\u4ee4\u4e0d\u540c\uff0c\u6574\u4e2a\u884c\u7684\u5269\u4f59\u90e8\u5206\u59cb\u7ec8\u88ab\u89c6\u4e3a<code class=\"command\">\\help</code> \u7684\u53c2\u6570\uff0c\u53c2\u6570\u4e2d\u4e0d\u8fdb\u884c\u53d8\u91cf\u63d2\u503c\u6216\u53cd\u5f15\u53f7\u6269\u5c55\u3002\n        </p><div class=\"note\"><h3 class=\"title\">\u6ce8\u610f</h3><p>\n        \u4e3a\u4e86\u7b80\u5316\u8f93\u5165\uff0c\u7531\u591a\u4e2a\u5355\u8bcd\u7ec4\u6210\u7684\u547d\u4ee4\u4e0d\u9700\u8981\u52a0\u5f15\u53f7\u3002\u56e0\u6b64\uff0c\u53ef\u4ee5\u76f4\u63a5\u8f93\u5165<strong class=\"userinput\"><code>\\help alter table</code></strong>\u3002\n        </p></div></dd></dl>"}, "comparison": {"left": "17", "right": "18", "status": "unchanged", "diff": ""}}