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"revision": "1bbbbf4133d426f0e4304010688d2984c30fb67df0cc3a61b3e37eb3f6f37833", "evidence_kind": "English manual and source declarations", "source_sha256": "83157ee9c599d03b2f7a3d73ef3a56ec24e0e79cc2b3501a64d1364f56398c86"}, "sources": [{"url": "https://pg.center/docs/19/app-psql.html#APP-PSQL-META-COMMAND-HELP", "file": "app-psql.html", "label": "19beta4 English manual \u00b7 app-psql.html", "anchor": "APP-PSQL-META-COMMAND-HELP", "sha256": "312975c12d6e4d62aeebcb5e98e7ca795c6d07ecb743b4bc64403dc42bc2a6e9", "language": "en", "original_url": "/docs/19/app-psql.html#APP-PSQL-META-COMMAND-HELP"}], "sections": [], "modifiers": [], "signature": "\\h or \\help [ command ]", "spellings": ["\\h", "\\help"], "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": "<div><dl class=\"variablelist\"><dt id=\"APP-PSQL-META-COMMAND-HELP\" lang=\"zh\"><span class=\"term\"><code class=\"literal\">\\h</code>\u6216<code class=\"literal\">\\help</code> <code class=\"literal\">[ <em class=\"replaceable\"><code>command</code></em> ]</code></span> </dt><dd>\n<p lang=\"zh\">\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</p>\n<p lang=\"zh\">\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</p>\n<div class=\"note\">\n<h3 class=\"title\" lang=\"zh\">\u6ce8\u610f</h3>\n<p lang=\"zh\">\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</p>\n</div>\n</dd></dl></div>", "manual_path": "app-psql.html#APP-PSQL-META-COMMAND-HELP", "localization": {"status": "complete", "sources": [{"url": "/docs/19/app-psql.html", "method": "same-major semantic node", "sha256": "1351be06967585f99a84454a26dff346091ea378daf6c7ed9fa18edee9d1131c", "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": {"/versions/19/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/19/facts/0/label": "Client", "/versions/19/facts/1/label": "Case-sensitive spelling", "/versions/19/tables/0/title": "Spellings in this manual definition", "/versions/19/related/1/label": "psql command-line options and complete manual", "/versions/19/tables/0/columns/0/label": "Command", "/versions/19/tables/0/columns/1/label": "Documented suffix modifiers", "/versions/19/tables/0/rows/0/modifiers": "None listed in this signature", "/versions/19/tables/0/rows/1/modifiers": "None listed in this signature"}, "fallback_fields": [], "source_language": "en", "original_snapshot_sha256": "af38ca74ea8c880781ce12f0a374a0c2726347ff58219072249e74184c34c617"}, "comparison_data": {"modifiers": [], "signature": "\\h or \\help [ command ]", "spellings": ["\\h", "\\help"], "definition": "Gives syntax help on the specified SQL command. 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Thus it is fine to type \\help alter table ."}, "comparison_hash": "b577574b2085fe90e006df02a39f4541a330b0431267a9fe13837edb82fa8cd5", "manual_language": "zh"}, "20": {"facts": [{"label": "\u5ba2\u6237\u7aef", "value": "psql 20devel"}, {"label": "\u533a\u5206\u5927\u5c0f\u5199\u7684\u5199\u6cd5", "value": "\\h"}], "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": "\\h", "related": [{"url": "/wiki/psql/cmd-68-65-6c-70/?v=20", "label": "\\help"}, {"url": "/wiki/tool/psql/?v=20", "label": "psql 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"source_snapshot_utc": "26-Sep-2026 20:22"}, "revision": "2eba5e0fd4c3bffb2803247b6cd537878e9d6ee5a6dfbe3c50ece8b421b80918", "evidence_kind": "English manual and source declarations", "source_sha256": "4d3346909b201ac1648232cf290462a7070c119326f56196f1f0253ed80fae41"}, "sources": [{"url": "https://pg.center/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": "6df5f6fbaff7800ae0e4a08a3116090d890a0cdcc02fddc31c1f220725905f87", "language": "en", "original_url": "/docs/devel/app-psql.html#APP-PSQL-META-COMMAND-HELP"}], "sections": [], "modifiers": [], "signature": "\\h or \\help [ command ]", "spellings": ["\\h", "\\help"], "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": "<div><dl class=\"variablelist\"><dt id=\"APP-PSQL-META-COMMAND-HELP\" lang=\"zh\"><span class=\"term\"><code class=\"literal\">\\h</code>\u6216<code class=\"literal\">\\help</code> <code class=\"literal\">[ <em class=\"replaceable\"><code>command</code></em> ]</code></span> </dt><dd>\n<p lang=\"zh\">\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</p>\n<p lang=\"zh\">\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</p>\n<div class=\"note\">\n<h3 class=\"title\" lang=\"zh\">\u6ce8\u610f</h3>\n<p lang=\"zh\">\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</p>\n</div>\n</dd></dl></div>", "manual_path": "app-psql.html#APP-PSQL-META-COMMAND-HELP", "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": "67143f2a301b5cd4ca3a6b0c239c63d85d9e51c1f60cfa95cf94252bc300c009"}, "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. 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"ee8d1a3612338fd9adf250730cb640fcc5233b5491337cc00a316a44e3a0b9f8", "evidence_kind": "English manual and source declarations", "source_sha256": "555610c24d53e4316da5b7d3fc25c279d96856d5e0e23ee308c328c5fa881d9f"}, "sources": [{"url": "https://pg.center/docs/18/app-psql.html#APP-PSQL-META-COMMAND-HELP", "file": "app-psql.html", "label": "18.6 English manual \u00b7 app-psql.html", "anchor": "APP-PSQL-META-COMMAND-HELP", "sha256": "fa2a1d39294b8854318e82e93f71272c645ed88150ecc2786c28902c3f32782c", "language": "en", "original_url": "/docs/18/app-psql.html#APP-PSQL-META-COMMAND-HELP"}], "sections": [], "modifiers": [], "signature": "\\h or \\help [ command ]", "spellings": ["\\h", "\\help"], "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 * 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