{"kind": "metric", "major": "18", "item": {"slug": "pg_stat_database-blk_read_time", "name": "pg_stat_database.blk_read_time", "name_zh": "", "category": "pg_stat_database", "summary": "\u5728\u8fd9\u4e2a\u6570\u636e\u5e93\u4e2d\u901a\u8fc7\u540e\u7aef\u8bfb\u53d6\u6570\u636e\u6587\u4ef6\u5757\u6240\u82b1\u8d39\u7684\u65f6\u95f4\uff0c\u4ee5\u6beb\u79d2\u4e3a\u5355\u4f4d\uff08\u5982\u679c\u542f\u7528\u4e86 track_io_timing\uff0c\u5426\u5219\u4e3a\u96f6\uff09", "aliases": ["blk_read_time", "pg_stat_database"], "content_hash": "fad8f8fb06c46c873e86c15a1dc312e9cd6f3c9b6ebb206d0ab51f96a077b433", "versions": {"10": {"view": "pg_stat_database", "facts": [{"label": "\u89c6\u56fe", "value": "pg_stat_database"}, {"label": "\u5b57\u6bb5", "value": "blk_read_time"}, {"label": "SQL \u7c7b\u578b", "value": "double precision"}, {"label": "\u5b57\u6bb5\u5b9a\u4e49\u8bb0\u8f7d\u7684\u5355\u4f4d", "value": "blocks, milliseconds"}, {"label": "\u91cd\u7f6e\u6761\u4ef6", "value": "\u8fd9\u4e9b\u7edf\u8ba1\u4e0a\u6b21\u91cd\u7f6e\u7684\u65f6\u95f4"}], "field": "blk_read_time", "tables": [], "related": [{"url": "/wiki/catalog/pg_stat_database/?v=10", "label": "pg_stat_database \u5b57\u6bb5"}, {"url": "/docs/10/monitoring-stats.html", "label": "\u7edf\u8ba1\u6536\u96c6\u4e0e\u91cd\u7f6e\u51fd\u6570"}], "release": {"ref": "https://ftp.postgresql.org/pub/source/v10.23/postgresql-10.23.tar.bz2", "label": "10.23", "major": "10", "channel": "stable", "revision": "94a4b2528372458e5662c18d406629266667c437198160a18cdfd2c4a4d6eee9"}, "sources": [{"url": "/docs/10/monitoring-stats.html#PG-STAT-DATABASE-VIEW", "path": "monitoring-stats.html", "label": "PostgreSQL 10 English manual", "sha256": "8b88457ddc21d8cbc59bc88fb9e07a79090419ef77c3d7f05b03e0f66a2bac3f"}], "zh_from": {"kind": "same-version-chinese-manual-with-source-derived-structured-summary", "manual": {"url": "/zh/docs/10/monitoring-stats.html#", "anchor": "", "column": "blk_read_time", "locale": "zh-Hans", "version": "10", "build_id": 63, "page_key": "monitoring-stats.html", "extraction": "exact-catalog-field", "source_hash": "cf884834ed32c9ed9446bea488204432defca82b5fccd3075349b7b866653094", "source_revision": "unknown:rendered-translation-baseline", "translation_revision": "snapshot:sha256:62997ea80516ad012fbf6359de33f3b016b54c47e2df76e75606116b4baaf8e5"}, "body_sha256": "7b4ee2295eafd02dc2fd3a795ac6b96f38b1635ae59e1bd40f6ffee8fe9452f7", "runtime_rerun": false, "authored_translation": "source-derived-structured-summary", "source_facts_revision": "94a4b2528372458e5662c18d406629266667c437198160a18cdfd2c4a4d6eee9"}, "facts_zh": [{"label": "\u89c6\u56fe", "value": "pg_stat_database"}, {"label": "\u5b57\u6bb5", "value": "blk_read_time"}, {"label": "SQL \u7c7b\u578b", "value": "double precision"}, {"label": "\u5b57\u6bb5\u5b9a\u4e49\u8bb0\u8f7d\u7684\u5355\u4f4d", "value": "blocks, milliseconds"}, {"label": "\u91cd\u7f6e\u6761\u4ef6", "value": "\u8fd9\u4e9b\u7edf\u8ba1\u4e0a\u6b21\u91cd\u7f6e\u7684\u65f6\u95f4"}], "sections": [{"title": "\u89c6\u56fe\u8bed\u4e49", "paragraphs": ["\u6bcf\u4e2a\u6570\u636e\u5e93\u4e00\u884c\uff0c\u663e\u793a\u6574\u4e2a\u6570\u636e\u5e93\u7684\u7edf\u8ba1\u4fe1\u606f\u3002\u8be6\u89c1 pg_stat_database \u3002"]}, {"title": "\u91c7\u96c6\u4e0e\u91cd\u7f6e\u8bed\u4e49", "paragraphs": ["\u91cd\u7f6e\u8303\u56f4\u548c\u53ef\u89c1\u6027\u8bf7\u53c2\u9605\u4e0b\u65b9\u540c\u7248\u672c\u7684\u7edf\u8ba1\u4fe1\u606f\u6536\u96c6\u4e0e\u89c6\u56fe\u6587\u6863\u3002\u4e0d\u6839\u636e\u5b57\u6bb5\u540d\u79f0\u63a8\u65ad\u5404\u5b57\u6bb5\u7684\u91cd\u7f6e\u89c4\u5219\u3002"]}, {"code": "SELECT blk_read_time FROM pg_catalog.pg_stat_database;", "title": "\u67e5\u770b\u6b64\u5b57\u6bb5", "paragraphs": ["\u793a\u4f8b\u67e5\u8be2\uff1b\u4e0d\u8868\u793a\u5df2\u6267\u884c\uff0c\u4e5f\u4e0d\u63d0\u4f9b\u5b9e\u6d4b\u503c\u3002"]}], "sql_type": "double precision", "center_zh": {"title": "pg_stat_database.blk_read_time", "locale": "zh-Hans", "source": {"key": "pg_stat_database-blk_read_time", "locale": "zh-Hans", "version": "10", "text_hash": "5cd0a2da0e98aaa8321f941c325fa4ac557a534f1fe0d65c1edb894e845dce46", "collection": "metric", "dataset_hash": "7c31b524dfe136022d39a6ae8dcfac6b3bbd5f8fdaf422536599981252aff0c9", "source_database": "center", "source_revision": "94a4b2528372458e5662c18d406629266667c437198160a18cdfd2c4a4d6eee9"}, "payload": {"facts": [{"label": "\u89c6\u56fe", "value": "pg_stat_database"}, {"label": "\u5b57\u6bb5", "value": "blk_read_time"}, {"label": "SQL \u7c7b\u578b", "value": "double precision"}, {"label": "\u5b57\u6bb5\u5b9a\u4e49\u8bb0\u8f7d\u7684\u5355\u4f4d", "value": "blocks, milliseconds"}, {"label": "\u91cd\u7f6e\u6761\u4ef6", "value": "\u8fd9\u4e9b\u7edf\u8ba1\u4e0a\u6b21\u91cd\u7f6e\u7684\u65f6\u95f4"}], "tables": [], "zh_from": {"kind": "same-version-chinese-manual-with-source-derived-structured-summary", "manual": {"url": "/zh/docs/10/monitoring-stats.html#", "anchor": "", "column": "blk_read_time", "locale": "zh-Hans", "version": "10", "build_id": 63, "page_key": "monitoring-stats.html", "extraction": "exact-catalog-field", "source_hash": "cf884834ed32c9ed9446bea488204432defca82b5fccd3075349b7b866653094", "source_revision": "unknown:rendered-translation-baseline", "translation_revision": "snapshot:sha256:62997ea80516ad012fbf6359de33f3b016b54c47e2df76e75606116b4baaf8e5"}, "body_sha256": "7b4ee2295eafd02dc2fd3a795ac6b96f38b1635ae59e1bd40f6ffee8fe9452f7", "runtime_rerun": false, "authored_translation": "source-derived-structured-summary", "source_facts_revision": "94a4b2528372458e5662c18d406629266667c437198160a18cdfd2c4a4d6eee9"}, "sections": [{"title": "\u89c6\u56fe\u8bed\u4e49", "paragraphs": ["\u6bcf\u4e2a\u6570\u636e\u5e93\u4e00\u884c\uff0c\u663e\u793a\u6574\u4e2a\u6570\u636e\u5e93\u7684\u7edf\u8ba1\u4fe1\u606f\u3002\u8be6\u89c1 pg_stat_database \u3002"]}, {"title": "\u91c7\u96c6\u4e0e\u91cd\u7f6e\u8bed\u4e49", "paragraphs": ["\u91cd\u7f6e\u8303\u56f4\u548c\u53ef\u89c1\u6027\u8bf7\u53c2\u9605\u4e0b\u65b9\u540c\u7248\u672c\u7684\u7edf\u8ba1\u4fe1\u606f\u6536\u96c6\u4e0e\u89c6\u56fe\u6587\u6863\u3002\u4e0d\u6839\u636e\u5b57\u6bb5\u540d\u79f0\u63a8\u65ad\u5404\u5b57\u6bb5\u7684\u91cd\u7f6e\u89c4\u5219\u3002"]}, {"code": "SELECT blk_read_time FROM pg_catalog.pg_stat_database;", "title": "\u67e5\u770b\u6b64\u5b57\u6bb5", "paragraphs": ["\u793a\u4f8b\u67e5\u8be2\uff1b\u4e0d\u8868\u793a\u5df2\u6267\u884c\uff0c\u4e5f\u4e0d\u63d0\u4f9b\u5b9e\u6d4b\u503c\u3002"]}], "description_zh": "\u6b64\u6570\u636e\u5e93\u7684\u540e\u7aef\u8bfb\u53d6\u6570\u636e\u6587\u4ef6\u5757\u6240\u82b1\u8d39\u7684\u65f6\u95f4\uff0c\u5355\u4f4d\u4e3a\u6beb\u79d2", "description_zh_html": "<p>pg_stat_database.blk_read_time \u7edf\u8ba1\u5b57\u6bb5\u3002</p><dl><dt>\u89c6\u56fe</dt><dd><code>pg_stat_database</code></dd><dt>\u5b57\u6bb5</dt><dd><code>blk_read_time</code></dd><dt>SQL \u7c7b\u578b</dt><dd><code>double precision</code></dd></dl><h3>\u540c\u7248\u672c\u4e2d\u6587\u624b\u518c\u5b9a\u4e49</h3><p>\u6b64\u6570\u636e\u5e93\u7684\u540e\u7aef\u8bfb\u53d6\u6570\u636e\u6587\u4ef6\u5757\u6240\u82b1\u8d39\u7684\u65f6\u95f4\uff0c\u5355\u4f4d\u4e3a\u6beb\u79d2</p><p><a href=\"/zh/docs/10/monitoring-stats.html#\">\u67e5\u770b\u5b8c\u6574\u4e2d\u6587\u624b\u518c\u4e0e\u4e0a\u4e0b\u6587</a>\u3002</p>"}, "summary": "\u6b64\u6570\u636e\u5e93\u7684\u540e\u7aef\u8bfb\u53d6\u6570\u636e\u6587\u4ef6\u5757\u6240\u82b1\u8d39\u7684\u65f6\u95f4\uff0c\u5355\u4f4d\u4e3a\u6beb\u79d2", "version": "10", "link_map": {"/zh/docs/10/monitoring-stats.html": "/docs/10/monitoring-stats.html"}, "body_html": "<p>pg_stat_database.blk_read_time \u7edf\u8ba1\u5b57\u6bb5\u3002</p><dl><dt>\u89c6\u56fe</dt><dd><code>pg_stat_database</code></dd><dt>\u5b57\u6bb5</dt><dd><code>blk_read_time</code></dd><dt>SQL \u7c7b\u578b</dt><dd><code>double precision</code></dd></dl><h3>\u540c\u7248\u672c\u4e2d\u6587\u624b\u518c\u5b9a\u4e49</h3><p>\u6b64\u6570\u636e\u5e93\u7684\u540e\u7aef\u8bfb\u53d6\u6570\u636e\u6587\u4ef6\u5757\u6240\u82b1\u8d39\u7684\u65f6\u95f4\uff0c\u5355\u4f4d\u4e3a\u6beb\u79d2</p><p><a href=\"/zh/docs/10/monitoring-stats.html\" rel=\"nofollow\">\u67e5\u770b\u5b8c\u6574\u4e2d\u6587\u624b\u518c\u4e0e\u4e0a\u4e0b\u6587</a>\u3002</p>", "body_sha256": "3cb96592bac0f1dbbf653ded94c95b03a95f14c416f2fd025730d6810b452eb7", "content_hash": "5cd0a2da0e98aaa8321f941c325fa4ac557a534f1fe0d65c1edb894e845dce46", "source_database": "center", "source_revision": "94a4b2528372458e5662c18d406629266667c437198160a18cdfd2c4a4d6eee9"}, "signature": "SELECT blk_read_time FROM pg_catalog.pg_stat_database;", "tables_zh": [], "documented": true, "description": ["\u6b64\u6570\u636e\u5e93\u7684\u540e\u7aef\u8bfb\u53d6\u6570\u636e\u6587\u4ef6\u5757\u6240\u82b1\u8d39\u7684\u65f6\u95f4\uff0c\u5355\u4f4d\u4e3a\u6beb\u79d2"], "manual_html": "", "manual_path": "/docs/10/monitoring-stats.html", "sections_zh": [{"title": "\u89c6\u56fe\u8bed\u4e49", "paragraphs": ["\u6bcf\u4e2a\u6570\u636e\u5e93\u4e00\u884c\uff0c\u663e\u793a\u6574\u4e2a\u6570\u636e\u5e93\u7684\u7edf\u8ba1\u4fe1\u606f\u3002\u8be6\u89c1 pg_stat_database \u3002"]}, {"title": "\u91c7\u96c6\u4e0e\u91cd\u7f6e\u8bed\u4e49", "paragraphs": ["\u91cd\u7f6e\u8303\u56f4\u548c\u53ef\u89c1\u6027\u8bf7\u53c2\u9605\u4e0b\u65b9\u540c\u7248\u672c\u7684\u7edf\u8ba1\u4fe1\u606f\u6536\u96c6\u4e0e\u89c6\u56fe\u6587\u6863\u3002\u4e0d\u6839\u636e\u5b57\u6bb5\u540d\u79f0\u63a8\u65ad\u5404\u5b57\u6bb5\u7684\u91cd\u7f6e\u89c4\u5219\u3002"]}, {"code": "SELECT blk_read_time FROM pg_catalog.pg_stat_database;", "title": "\u67e5\u770b\u6b64\u5b57\u6bb5", "paragraphs": ["\u793a\u4f8b\u67e5\u8be2\uff1b\u4e0d\u8868\u793a\u5df2\u6267\u884c\uff0c\u4e5f\u4e0d\u63d0\u4f9b\u5b9e\u6d4b\u503c\u3002"]}], "source_only": false, "localization": {"status": "complete", "sources": [{"url": "/docs/10/monitoring-stats.html", "method": "same-major semantic node", "sha256": "881c50196a1774b6cbfd40977523b79f34cd079195f91024d1e3c322c763a8b5", "language": "zh", "matched_nodes": ["#MONITORING-STATS/div[6]/div[41]/div[1]/table[0]/tbody[2]/tr[16]/td[2]", "#MONITORING-STATS/div[6]/div[7]/div[1]/table[0]/tbody[2]/tr[2]/td[1]"]}], "language": "zh", "original_text": {"/versions/10/description/0": "Time spent reading data file blocks by backends in this database, in milliseconds", "/versions/10/facts/0/label": "View", "/versions/10/facts/1/label": "Field", "/versions/10/facts/2/label": "SQL type", "/versions/10/facts/3/label": "Units named in the field definition", "/versions/10/facts/4/label": "Reset observation", "/versions/10/facts/4/value": "Time at which these statistics were last reset", "/versions/10/related/0/label": "pg_stat_database columns", "/versions/10/related/1/label": "Statistics collection and reset functions", "/versions/10/sections/0/title": "View semantics", "/versions/10/sections/1/title": "Collection and reset context", "/versions/10/sections/2/title": "Inspect this field", "/versions/10/sections/0/paragraphs/0": "One row per database, showing database-wide statistics. See pg_stat_database for details.", "/versions/10/sections/1/paragraphs/0": "Read the same-version statistics collection and view documentation below for reset scope and visibility. No per-field reset rule is inferred from the field name.", "/versions/10/sections/2/paragraphs/0": "Example query; no execution result or measured value is asserted."}, "fallback_fields": [], "source_language": "en", "original_snapshot_sha256": "96576289c3d2f566d8d6f7d029154efa7c96d362d94db59a78b235ef2ce3fcba", "canonical_center_text_hash": "5cd0a2da0e98aaa8321f941c325fa4ac557a534f1fe0d65c1edb894e845dce46"}, "description_zh": "\u6b64\u6570\u636e\u5e93\u7684\u540e\u7aef\u8bfb\u53d6\u6570\u636e\u6587\u4ef6\u5757\u6240\u82b1\u8d39\u7684\u65f6\u95f4\uff0c\u5355\u4f4d\u4e3a\u6beb\u79d2", "comparison_data": {"view": "pg_stat_database", "field": "blk_read_time", "sql_type": "double precision", "units_mentioned": ["blocks", "milliseconds"]}, "comparison_hash": "c28bef2f31d56d506979b87f818489284f8c0a9025ea0ad48c4886b39bdc6456", "manual_language": "zh", "units_mentioned": ["blocks", "milliseconds"], "description_zh_html": "<p>pg_stat_database.blk_read_time \u7edf\u8ba1\u5b57\u6bb5\u3002</p><dl><dt>\u89c6\u56fe</dt><dd><code>pg_stat_database</code></dd><dt>\u5b57\u6bb5</dt><dd><code>blk_read_time</code></dd><dt>SQL \u7c7b\u578b</dt><dd><code>double precision</code></dd></dl><h3>\u540c\u7248\u672c\u4e2d\u6587\u624b\u518c\u5b9a\u4e49</h3><p>\u6b64\u6570\u636e\u5e93\u7684\u540e\u7aef\u8bfb\u53d6\u6570\u636e\u6587\u4ef6\u5757\u6240\u82b1\u8d39\u7684\u65f6\u95f4\uff0c\u5355\u4f4d\u4e3a\u6beb\u79d2</p><p><a href=\"/zh/docs/10/monitoring-stats.html\" rel=\"nofollow\">\u67e5\u770b\u5b8c\u6574\u4e2d\u6587\u624b\u518c\u4e0e\u4e0a\u4e0b\u6587</a>\u3002</p>"}, "11": {"view": "pg_stat_database", "facts": [{"label": "\u89c6\u56fe", "value": "pg_stat_database"}, {"label": "\u5b57\u6bb5", "value": "blk_read_time"}, {"label": "SQL \u7c7b\u578b", "value": "double precision"}, {"label": "\u5b57\u6bb5\u5b9a\u4e49\u8bb0\u8f7d\u7684\u5355\u4f4d", "value": "blocks, milliseconds"}, {"label": "\u91cd\u7f6e\u6761\u4ef6", "value": "\u8fd9\u4e9b\u7edf\u8ba1\u4e0a\u6b21\u91cd\u7f6e\u7684\u65f6\u95f4"}], "field": "blk_read_time", "tables": [], "related": [{"url": "/wiki/catalog/pg_stat_database/?v=11", "label": "pg_stat_database \u5b57\u6bb5"}, {"url": "/docs/11/monitoring-stats.html", "label": "\u7edf\u8ba1\u6536\u96c6\u4e0e\u91cd\u7f6e\u51fd\u6570"}], "release": {"ref": "https://ftp.postgresql.org/pub/source/v11.22/postgresql-11.22.tar.bz2", "label": "11.22", "major": "11", "channel": "stable", "revision": "2cb7c97d7a0d7278851bbc9c61f467b69c094c72b81740b751108e7892ebe1f0"}, "sources": [{"url": "/docs/11/monitoring-stats.html#PG-STAT-DATABASE-VIEW", "path": "monitoring-stats.html", "label": "PostgreSQL 11 English manual", "sha256": "8b7b421aabe5ecaae695cb42a270d7192bfe2bfbd1ac2aa756087c177f734600"}], "zh_from": {"kind": "same-version-chinese-manual-with-source-derived-structured-summary", "manual": {"url": "/zh/docs/11/monitoring-stats.html#", "anchor": "", "column": "blk_read_time", "locale": "zh-Hans", "version": "11", "build_id": 64, "page_key": "monitoring-stats.html", "extraction": "exact-catalog-field", "source_hash": "2bd0ab0ada5d4a95c80dd511d5018532613c2753b6c2debc208355ba0cf80625", "source_revision": "unknown:rendered-translation-baseline", "translation_revision": "snapshot:sha256:ef5c7bc074acae9795db16e6b7482aea3b222bd4bcce0f76831332b97a21e8a1"}, "body_sha256": "253a78886fa81e5d58c6dcb4fb4b4884661df431fbeb7bc729bcc4eb3e91622a", "runtime_rerun": false, "authored_translation": "source-derived-structured-summary", "source_facts_revision": "2cb7c97d7a0d7278851bbc9c61f467b69c094c72b81740b751108e7892ebe1f0"}, "facts_zh": [{"label": "\u89c6\u56fe", "value": "pg_stat_database"}, {"label": "\u5b57\u6bb5", "value": "blk_read_time"}, {"label": "SQL \u7c7b\u578b", "value": "double precision"}, {"label": "\u5b57\u6bb5\u5b9a\u4e49\u8bb0\u8f7d\u7684\u5355\u4f4d", "value": "blocks, milliseconds"}, {"label": "\u91cd\u7f6e\u6761\u4ef6", "value": "\u8fd9\u4e9b\u7edf\u8ba1\u4e0a\u6b21\u91cd\u7f6e\u7684\u65f6\u95f4"}], "sections": [{"title": "\u89c6\u56fe\u8bed\u4e49", "paragraphs": ["\u6bcf\u4e2a\u6570\u636e\u5e93\u4e00\u884c\uff0c\u663e\u793a\u6574\u4e2a\u6570\u636e\u5e93\u7684\u7edf\u8ba1\u4fe1\u606f\u3002\u8be6\u89c1 pg_stat_database \u3002"]}, {"title": "\u91c7\u96c6\u4e0e\u91cd\u7f6e\u8bed\u4e49", "paragraphs": ["\u91cd\u7f6e\u8303\u56f4\u548c\u53ef\u89c1\u6027\u8bf7\u53c2\u9605\u4e0b\u65b9\u540c\u7248\u672c\u7684\u7edf\u8ba1\u4fe1\u606f\u6536\u96c6\u4e0e\u89c6\u56fe\u6587\u6863\u3002\u4e0d\u6839\u636e\u5b57\u6bb5\u540d\u79f0\u63a8\u65ad\u5404\u5b57\u6bb5\u7684\u91cd\u7f6e\u89c4\u5219\u3002"]}, {"code": "SELECT blk_read_time FROM pg_catalog.pg_stat_database;", "title": "\u67e5\u770b\u6b64\u5b57\u6bb5", "paragraphs": ["\u793a\u4f8b\u67e5\u8be2\uff1b\u4e0d\u8868\u793a\u5df2\u6267\u884c\uff0c\u4e5f\u4e0d\u63d0\u4f9b\u5b9e\u6d4b\u503c\u3002"]}], "sql_type": "double precision", "center_zh": {"title": "pg_stat_database.blk_read_time", "locale": "zh-Hans", "source": {"key": "pg_stat_database-blk_read_time", "locale": "zh-Hans", "version": "11", "text_hash": "8c1975797c77063b5b4873445fb1a279db023bd2ac0c7a499678487c35f5e2bd", "collection": "metric", "dataset_hash": "7c31b524dfe136022d39a6ae8dcfac6b3bbd5f8fdaf422536599981252aff0c9", "source_database": "center", "source_revision": "2cb7c97d7a0d7278851bbc9c61f467b69c094c72b81740b751108e7892ebe1f0"}, "payload": {"facts": [{"label": "\u89c6\u56fe", "value": "pg_stat_database"}, {"label": "\u5b57\u6bb5", "value": "blk_read_time"}, {"label": "SQL \u7c7b\u578b", "value": "double precision"}, {"label": "\u5b57\u6bb5\u5b9a\u4e49\u8bb0\u8f7d\u7684\u5355\u4f4d", "value": "blocks, milliseconds"}, {"label": "\u91cd\u7f6e\u6761\u4ef6", "value": "\u8fd9\u4e9b\u7edf\u8ba1\u4e0a\u6b21\u91cd\u7f6e\u7684\u65f6\u95f4"}], "tables": [], "zh_from": {"kind": "same-version-chinese-manual-with-source-derived-structured-summary", "manual": {"url": "/zh/docs/11/monitoring-stats.html#", "anchor": "", "column": "blk_read_time", "locale": "zh-Hans", "version": "11", "build_id": 64, "page_key": "monitoring-stats.html", "extraction": "exact-catalog-field", "source_hash": "2bd0ab0ada5d4a95c80dd511d5018532613c2753b6c2debc208355ba0cf80625", "source_revision": "unknown:rendered-translation-baseline", "translation_revision": "snapshot:sha256:ef5c7bc074acae9795db16e6b7482aea3b222bd4bcce0f76831332b97a21e8a1"}, "body_sha256": "253a78886fa81e5d58c6dcb4fb4b4884661df431fbeb7bc729bcc4eb3e91622a", "runtime_rerun": false, "authored_translation": "source-derived-structured-summary", "source_facts_revision": "2cb7c97d7a0d7278851bbc9c61f467b69c094c72b81740b751108e7892ebe1f0"}, "sections": [{"title": "\u89c6\u56fe\u8bed\u4e49", "paragraphs": ["\u6bcf\u4e2a\u6570\u636e\u5e93\u4e00\u884c\uff0c\u663e\u793a\u6574\u4e2a\u6570\u636e\u5e93\u7684\u7edf\u8ba1\u4fe1\u606f\u3002\u8be6\u89c1 pg_stat_database \u3002"]}, {"title": "\u91c7\u96c6\u4e0e\u91cd\u7f6e\u8bed\u4e49", "paragraphs": ["\u91cd\u7f6e\u8303\u56f4\u548c\u53ef\u89c1\u6027\u8bf7\u53c2\u9605\u4e0b\u65b9\u540c\u7248\u672c\u7684\u7edf\u8ba1\u4fe1\u606f\u6536\u96c6\u4e0e\u89c6\u56fe\u6587\u6863\u3002\u4e0d\u6839\u636e\u5b57\u6bb5\u540d\u79f0\u63a8\u65ad\u5404\u5b57\u6bb5\u7684\u91cd\u7f6e\u89c4\u5219\u3002"]}, {"code": "SELECT blk_read_time FROM pg_catalog.pg_stat_database;", "title": "\u67e5\u770b\u6b64\u5b57\u6bb5", "paragraphs": ["\u793a\u4f8b\u67e5\u8be2\uff1b\u4e0d\u8868\u793a\u5df2\u6267\u884c\uff0c\u4e5f\u4e0d\u63d0\u4f9b\u5b9e\u6d4b\u503c\u3002"]}], "description_zh": "\u6b64\u6570\u636e\u5e93\u7684\u540e\u7aef\u8bfb\u53d6\u6570\u636e\u6587\u4ef6\u5757\u6240\u82b1\u8d39\u7684\u65f6\u95f4\uff0c\u5355\u4f4d\u4e3a\u6beb\u79d2", "description_zh_html": "<p>pg_stat_database.blk_read_time \u7edf\u8ba1\u5b57\u6bb5\u3002</p><dl><dt>\u89c6\u56fe</dt><dd><code>pg_stat_database</code></dd><dt>\u5b57\u6bb5</dt><dd><code>blk_read_time</code></dd><dt>SQL \u7c7b\u578b</dt><dd><code>double precision</code></dd></dl><h3>\u540c\u7248\u672c\u4e2d\u6587\u624b\u518c\u5b9a\u4e49</h3><p>\u6b64\u6570\u636e\u5e93\u7684\u540e\u7aef\u8bfb\u53d6\u6570\u636e\u6587\u4ef6\u5757\u6240\u82b1\u8d39\u7684\u65f6\u95f4\uff0c\u5355\u4f4d\u4e3a\u6beb\u79d2</p><p><a href=\"/zh/docs/11/monitoring-stats.html#\">\u67e5\u770b\u5b8c\u6574\u4e2d\u6587\u624b\u518c\u4e0e\u4e0a\u4e0b\u6587</a>\u3002</p>"}, "summary": "\u6b64\u6570\u636e\u5e93\u7684\u540e\u7aef\u8bfb\u53d6\u6570\u636e\u6587\u4ef6\u5757\u6240\u82b1\u8d39\u7684\u65f6\u95f4\uff0c\u5355\u4f4d\u4e3a\u6beb\u79d2", "version": "11", "link_map": {"/zh/docs/11/monitoring-stats.html": "/docs/11/monitoring-stats.html"}, "body_html": "<p>pg_stat_database.blk_read_time \u7edf\u8ba1\u5b57\u6bb5\u3002</p><dl><dt>\u89c6\u56fe</dt><dd><code>pg_stat_database</code></dd><dt>\u5b57\u6bb5</dt><dd><code>blk_read_time</code></dd><dt>SQL \u7c7b\u578b</dt><dd><code>double precision</code></dd></dl><h3>\u540c\u7248\u672c\u4e2d\u6587\u624b\u518c\u5b9a\u4e49</h3><p>\u6b64\u6570\u636e\u5e93\u7684\u540e\u7aef\u8bfb\u53d6\u6570\u636e\u6587\u4ef6\u5757\u6240\u82b1\u8d39\u7684\u65f6\u95f4\uff0c\u5355\u4f4d\u4e3a\u6beb\u79d2</p><p><a href=\"/zh/docs/11/monitoring-stats.html\" rel=\"nofollow\">\u67e5\u770b\u5b8c\u6574\u4e2d\u6587\u624b\u518c\u4e0e\u4e0a\u4e0b\u6587</a>\u3002</p>", "body_sha256": "719fc4a24500241df63d4c4baeb1dd057e285ce60a23b8b8b5809d83db68e231", "content_hash": "8c1975797c77063b5b4873445fb1a279db023bd2ac0c7a499678487c35f5e2bd", "source_database": "center", "source_revision": "2cb7c97d7a0d7278851bbc9c61f467b69c094c72b81740b751108e7892ebe1f0"}, "signature": "SELECT blk_read_time FROM pg_catalog.pg_stat_database;", "tables_zh": [], "documented": true, "description": ["\u6b64\u6570\u636e\u5e93\u7684\u540e\u7aef\u8bfb\u53d6\u6570\u636e\u6587\u4ef6\u5757\u6240\u82b1\u8d39\u7684\u65f6\u95f4\uff0c\u5355\u4f4d\u4e3a\u6beb\u79d2"], "manual_html": "", "manual_path": "/docs/11/monitoring-stats.html", "sections_zh": [{"title": "\u89c6\u56fe\u8bed\u4e49", "paragraphs": ["\u6bcf\u4e2a\u6570\u636e\u5e93\u4e00\u884c\uff0c\u663e\u793a\u6574\u4e2a\u6570\u636e\u5e93\u7684\u7edf\u8ba1\u4fe1\u606f\u3002\u8be6\u89c1 pg_stat_database \u3002"]}, {"title": "\u91c7\u96c6\u4e0e\u91cd\u7f6e\u8bed\u4e49", "paragraphs": ["\u91cd\u7f6e\u8303\u56f4\u548c\u53ef\u89c1\u6027\u8bf7\u53c2\u9605\u4e0b\u65b9\u540c\u7248\u672c\u7684\u7edf\u8ba1\u4fe1\u606f\u6536\u96c6\u4e0e\u89c6\u56fe\u6587\u6863\u3002\u4e0d\u6839\u636e\u5b57\u6bb5\u540d\u79f0\u63a8\u65ad\u5404\u5b57\u6bb5\u7684\u91cd\u7f6e\u89c4\u5219\u3002"]}, {"code": "SELECT blk_read_time FROM pg_catalog.pg_stat_database;", "title": "\u67e5\u770b\u6b64\u5b57\u6bb5", "paragraphs": ["\u793a\u4f8b\u67e5\u8be2\uff1b\u4e0d\u8868\u793a\u5df2\u6267\u884c\uff0c\u4e5f\u4e0d\u63d0\u4f9b\u5b9e\u6d4b\u503c\u3002"]}], "source_only": false, "localization": {"status": "complete", "sources": [{"url": "/docs/11/monitoring-stats.html", "method": "same-major semantic node", "sha256": "0f94440120a340dbcbbfec4d9fd6ea8ad93b9671f759fe80a4f373ba248c864e", "language": "zh", "matched_nodes": ["#MONITORING-STATS/div[6]/div[41]/div[1]/table[0]/tbody[2]/tr[16]/td[2]", "#MONITORING-STATS/div[6]/div[7]/div[1]/table[0]/tbody[2]/tr[2]/td[1]"]}], "language": "zh", "original_text": {"/versions/11/description/0": "Time spent reading data file blocks by backends in this database, in milliseconds", "/versions/11/facts/0/label": "View", "/versions/11/facts/1/label": "Field", "/versions/11/facts/2/label": "SQL type", "/versions/11/facts/3/label": "Units named in the field definition", "/versions/11/facts/4/label": "Reset observation", "/versions/11/facts/4/value": "Time at which these statistics were last reset", "/versions/11/related/0/label": "pg_stat_database columns", "/versions/11/related/1/label": "Statistics collection and reset functions", "/versions/11/sections/0/title": "View semantics", "/versions/11/sections/1/title": "Collection and reset context", "/versions/11/sections/2/title": "Inspect this field", "/versions/11/sections/0/paragraphs/0": "One row per database, showing database-wide statistics. See pg_stat_database for details.", "/versions/11/sections/1/paragraphs/0": "Read the same-version statistics collection and view documentation below for reset scope and visibility. No per-field reset rule is inferred from the field name.", "/versions/11/sections/2/paragraphs/0": "Example query; no execution result or measured value is asserted."}, "fallback_fields": [], "source_language": "en", "original_snapshot_sha256": "1f9d725441326f956512c989f4c9a6019d02c26b76396e321e37ffbf59a8f621", "canonical_center_text_hash": "8c1975797c77063b5b4873445fb1a279db023bd2ac0c7a499678487c35f5e2bd"}, "description_zh": "\u6b64\u6570\u636e\u5e93\u7684\u540e\u7aef\u8bfb\u53d6\u6570\u636e\u6587\u4ef6\u5757\u6240\u82b1\u8d39\u7684\u65f6\u95f4\uff0c\u5355\u4f4d\u4e3a\u6beb\u79d2", "comparison_data": {"view": "pg_stat_database", "field": "blk_read_time", "sql_type": "double precision", "units_mentioned": ["blocks", "milliseconds"]}, "comparison_hash": "c28bef2f31d56d506979b87f818489284f8c0a9025ea0ad48c4886b39bdc6456", "manual_language": "zh", "units_mentioned": ["blocks", "milliseconds"], "description_zh_html": "<p>pg_stat_database.blk_read_time \u7edf\u8ba1\u5b57\u6bb5\u3002</p><dl><dt>\u89c6\u56fe</dt><dd><code>pg_stat_database</code></dd><dt>\u5b57\u6bb5</dt><dd><code>blk_read_time</code></dd><dt>SQL \u7c7b\u578b</dt><dd><code>double precision</code></dd></dl><h3>\u540c\u7248\u672c\u4e2d\u6587\u624b\u518c\u5b9a\u4e49</h3><p>\u6b64\u6570\u636e\u5e93\u7684\u540e\u7aef\u8bfb\u53d6\u6570\u636e\u6587\u4ef6\u5757\u6240\u82b1\u8d39\u7684\u65f6\u95f4\uff0c\u5355\u4f4d\u4e3a\u6beb\u79d2</p><p><a href=\"/zh/docs/11/monitoring-stats.html\" rel=\"nofollow\">\u67e5\u770b\u5b8c\u6574\u4e2d\u6587\u624b\u518c\u4e0e\u4e0a\u4e0b\u6587</a>\u3002</p>"}, "12": {"view": "pg_stat_database", "facts": [{"label": "\u89c6\u56fe", "value": "pg_stat_database"}, {"label": "\u5b57\u6bb5", "value": "blk_read_time"}, {"label": "SQL \u7c7b\u578b", "value": "double precision"}, {"label": "\u5b57\u6bb5\u5b9a\u4e49\u8bb0\u8f7d\u7684\u5355\u4f4d", "value": "blocks, milliseconds"}, {"label": "\u91cd\u7f6e\u6761\u4ef6", "value": "\u8fd9\u4e9b\u7edf\u8ba1\u4e0a\u6b21\u91cd\u7f6e\u7684\u65f6\u95f4"}], "field": "blk_read_time", "tables": [], "related": [{"url": "/wiki/catalog/pg_stat_database/?v=12", "label": "pg_stat_database \u5b57\u6bb5"}, {"url": "/docs/12/monitoring-stats.html", "label": "\u7edf\u8ba1\u6536\u96c6\u4e0e\u91cd\u7f6e\u51fd\u6570"}], "release": {"ref": "https://ftp.postgresql.org/pub/source/v12.22/postgresql-12.22.tar.bz2", "label": "12.22", "major": "12", "channel": "stable", "revision": "8df3c0474782589d3c6f374b5133b1bd14d168086edbc13c6e72e67dd4527a3b"}, "sources": [{"url": "/docs/12/monitoring-stats.html#PG-STAT-DATABASE-VIEW", "path": "monitoring-stats.html", "label": "PostgreSQL 12 English manual", "sha256": "3a764eaa784efc0eed1081cdfc2bf313c91bd17122d66dd16055d8b640320699"}], "zh_from": {"kind": "same-version-chinese-manual-with-source-derived-structured-summary", "manual": {"url": "/zh/docs/12/monitoring-stats.html#", "anchor": "", "column": "blk_read_time", "locale": "zh-Hans", "version": "12", "build_id": 65, "page_key": "monitoring-stats.html", "extraction": "exact-catalog-field", "source_hash": "1807d9852353a1af2b64d546fb3be93143b4831734c8d432737488e3037ac9f1", "source_revision": "unknown:rendered-translation-baseline", "translation_revision": "snapshot:sha256:86d2ff781f93e1de17122ebc514d5e64fcb63fed15941f496d7e146c6dcc7a49"}, "body_sha256": "1e553e763072e0b7814766f1f393fa978dd3832d1f42e87d8654f50826a69125", "runtime_rerun": false, "authored_translation": "source-derived-structured-summary", "source_facts_revision": "8df3c0474782589d3c6f374b5133b1bd14d168086edbc13c6e72e67dd4527a3b"}, "facts_zh": [{"label": "\u89c6\u56fe", "value": "pg_stat_database"}, {"label": "\u5b57\u6bb5", "value": "blk_read_time"}, {"label": "SQL \u7c7b\u578b", "value": "double precision"}, {"label": "\u5b57\u6bb5\u5b9a\u4e49\u8bb0\u8f7d\u7684\u5355\u4f4d", "value": "blocks, milliseconds"}, {"label": "\u91cd\u7f6e\u6761\u4ef6", "value": "\u8fd9\u4e9b\u7edf\u8ba1\u4e0a\u6b21\u91cd\u7f6e\u7684\u65f6\u95f4"}], "sections": [{"title": "\u89c6\u56fe\u8bed\u4e49", "paragraphs": ["\u6bcf\u4e2a\u6570\u636e\u5e93\u4e00\u884c\uff0c\u663e\u793a\u6574\u4e2a\u6570\u636e\u5e93\u7684\u7edf\u8ba1\u4fe1\u606f\u3002\u8be6\u89c1 pg_stat_database \u3002"]}, {"title": "\u91c7\u96c6\u4e0e\u91cd\u7f6e\u8bed\u4e49", "paragraphs": ["\u91cd\u7f6e\u8303\u56f4\u548c\u53ef\u89c1\u6027\u8bf7\u53c2\u9605\u4e0b\u65b9\u540c\u7248\u672c\u7684\u7edf\u8ba1\u4fe1\u606f\u6536\u96c6\u4e0e\u89c6\u56fe\u6587\u6863\u3002\u4e0d\u6839\u636e\u5b57\u6bb5\u540d\u79f0\u63a8\u65ad\u5404\u5b57\u6bb5\u7684\u91cd\u7f6e\u89c4\u5219\u3002"]}, {"code": "SELECT blk_read_time FROM pg_catalog.pg_stat_database;", "title": "\u67e5\u770b\u6b64\u5b57\u6bb5", "paragraphs": ["\u793a\u4f8b\u67e5\u8be2\uff1b\u4e0d\u8868\u793a\u5df2\u6267\u884c\uff0c\u4e5f\u4e0d\u63d0\u4f9b\u5b9e\u6d4b\u503c\u3002"]}], "sql_type": "double precision", "center_zh": {"title": "pg_stat_database.blk_read_time", "locale": "zh-Hans", "source": {"key": "pg_stat_database-blk_read_time", "locale": "zh-Hans", "version": "12", "text_hash": "e1ee3776884a51024c251fd2bed49ff355a60398e7207cc1b23ad19eb5e143eb", "collection": "metric", "dataset_hash": "7c31b524dfe136022d39a6ae8dcfac6b3bbd5f8fdaf422536599981252aff0c9", "source_database": "center", "source_revision": "8df3c0474782589d3c6f374b5133b1bd14d168086edbc13c6e72e67dd4527a3b"}, "payload": {"facts": [{"label": "\u89c6\u56fe", "value": "pg_stat_database"}, {"label": "\u5b57\u6bb5", "value": "blk_read_time"}, {"label": "SQL \u7c7b\u578b", "value": "double precision"}, {"label": "\u5b57\u6bb5\u5b9a\u4e49\u8bb0\u8f7d\u7684\u5355\u4f4d", "value": "blocks, milliseconds"}, {"label": "\u91cd\u7f6e\u6761\u4ef6", "value": "\u8fd9\u4e9b\u7edf\u8ba1\u4e0a\u6b21\u91cd\u7f6e\u7684\u65f6\u95f4"}], "tables": [], "zh_from": {"kind": "same-version-chinese-manual-with-source-derived-structured-summary", "manual": {"url": "/zh/docs/12/monitoring-stats.html#", "anchor": "", "column": "blk_read_time", "locale": "zh-Hans", "version": "12", "build_id": 65, "page_key": "monitoring-stats.html", "extraction": "exact-catalog-field", "source_hash": "1807d9852353a1af2b64d546fb3be93143b4831734c8d432737488e3037ac9f1", "source_revision": "unknown:rendered-translation-baseline", "translation_revision": "snapshot:sha256:86d2ff781f93e1de17122ebc514d5e64fcb63fed15941f496d7e146c6dcc7a49"}, "body_sha256": "1e553e763072e0b7814766f1f393fa978dd3832d1f42e87d8654f50826a69125", "runtime_rerun": false, "authored_translation": "source-derived-structured-summary", "source_facts_revision": "8df3c0474782589d3c6f374b5133b1bd14d168086edbc13c6e72e67dd4527a3b"}, "sections": [{"title": "\u89c6\u56fe\u8bed\u4e49", "paragraphs": ["\u6bcf\u4e2a\u6570\u636e\u5e93\u4e00\u884c\uff0c\u663e\u793a\u6574\u4e2a\u6570\u636e\u5e93\u7684\u7edf\u8ba1\u4fe1\u606f\u3002\u8be6\u89c1 pg_stat_database \u3002"]}, {"title": "\u91c7\u96c6\u4e0e\u91cd\u7f6e\u8bed\u4e49", "paragraphs": ["\u91cd\u7f6e\u8303\u56f4\u548c\u53ef\u89c1\u6027\u8bf7\u53c2\u9605\u4e0b\u65b9\u540c\u7248\u672c\u7684\u7edf\u8ba1\u4fe1\u606f\u6536\u96c6\u4e0e\u89c6\u56fe\u6587\u6863\u3002\u4e0d\u6839\u636e\u5b57\u6bb5\u540d\u79f0\u63a8\u65ad\u5404\u5b57\u6bb5\u7684\u91cd\u7f6e\u89c4\u5219\u3002"]}, {"code": "SELECT blk_read_time FROM pg_catalog.pg_stat_database;", "title": "\u67e5\u770b\u6b64\u5b57\u6bb5", "paragraphs": ["\u793a\u4f8b\u67e5\u8be2\uff1b\u4e0d\u8868\u793a\u5df2\u6267\u884c\uff0c\u4e5f\u4e0d\u63d0\u4f9b\u5b9e\u6d4b\u503c\u3002"]}], "description_zh": "\u6b64\u6570\u636e\u5e93\u7684\u540e\u7aef\u8bfb\u53d6\u6570\u636e\u6587\u4ef6\u5757\u6240\u82b1\u8d39\u7684\u65f6\u95f4\uff0c\u5355\u4f4d\u4e3a\u6beb\u79d2", "description_zh_html": "<p>pg_stat_database.blk_read_time \u7edf\u8ba1\u5b57\u6bb5\u3002</p><dl><dt>\u89c6\u56fe</dt><dd><code>pg_stat_database</code></dd><dt>\u5b57\u6bb5</dt><dd><code>blk_read_time</code></dd><dt>SQL \u7c7b\u578b</dt><dd><code>double precision</code></dd></dl><h3>\u540c\u7248\u672c\u4e2d\u6587\u624b\u518c\u5b9a\u4e49</h3><p>\u6b64\u6570\u636e\u5e93\u7684\u540e\u7aef\u8bfb\u53d6\u6570\u636e\u6587\u4ef6\u5757\u6240\u82b1\u8d39\u7684\u65f6\u95f4\uff0c\u5355\u4f4d\u4e3a\u6beb\u79d2</p><p><a href=\"/zh/docs/12/monitoring-stats.html#\">\u67e5\u770b\u5b8c\u6574\u4e2d\u6587\u624b\u518c\u4e0e\u4e0a\u4e0b\u6587</a>\u3002</p>"}, "summary": "\u6b64\u6570\u636e\u5e93\u7684\u540e\u7aef\u8bfb\u53d6\u6570\u636e\u6587\u4ef6\u5757\u6240\u82b1\u8d39\u7684\u65f6\u95f4\uff0c\u5355\u4f4d\u4e3a\u6beb\u79d2", "version": "12", "link_map": {"/zh/docs/12/monitoring-stats.html": "/docs/12/monitoring-stats.html"}, "body_html": "<p>pg_stat_database.blk_read_time \u7edf\u8ba1\u5b57\u6bb5\u3002</p><dl><dt>\u89c6\u56fe</dt><dd><code>pg_stat_database</code></dd><dt>\u5b57\u6bb5</dt><dd><code>blk_read_time</code></dd><dt>SQL \u7c7b\u578b</dt><dd><code>double precision</code></dd></dl><h3>\u540c\u7248\u672c\u4e2d\u6587\u624b\u518c\u5b9a\u4e49</h3><p>\u6b64\u6570\u636e\u5e93\u7684\u540e\u7aef\u8bfb\u53d6\u6570\u636e\u6587\u4ef6\u5757\u6240\u82b1\u8d39\u7684\u65f6\u95f4\uff0c\u5355\u4f4d\u4e3a\u6beb\u79d2</p><p><a href=\"/zh/docs/12/monitoring-stats.html\" rel=\"nofollow\">\u67e5\u770b\u5b8c\u6574\u4e2d\u6587\u624b\u518c\u4e0e\u4e0a\u4e0b\u6587</a>\u3002</p>", "body_sha256": "4700342939a9dd6eccd14ed2dc217bf0bfa8369ff10e927d5e164fe453522425", "content_hash": "e1ee3776884a51024c251fd2bed49ff355a60398e7207cc1b23ad19eb5e143eb", "source_database": "center", "source_revision": "8df3c0474782589d3c6f374b5133b1bd14d168086edbc13c6e72e67dd4527a3b"}, "signature": "SELECT blk_read_time FROM pg_catalog.pg_stat_database;", "tables_zh": [], "documented": true, "description": ["\u6b64\u6570\u636e\u5e93\u7684\u540e\u7aef\u8bfb\u53d6\u6570\u636e\u6587\u4ef6\u5757\u6240\u82b1\u8d39\u7684\u65f6\u95f4\uff0c\u5355\u4f4d\u4e3a\u6beb\u79d2"], "manual_html": "", "manual_path": "/docs/12/monitoring-stats.html", "sections_zh": [{"title": "\u89c6\u56fe\u8bed\u4e49", "paragraphs": ["\u6bcf\u4e2a\u6570\u636e\u5e93\u4e00\u884c\uff0c\u663e\u793a\u6574\u4e2a\u6570\u636e\u5e93\u7684\u7edf\u8ba1\u4fe1\u606f\u3002\u8be6\u89c1 pg_stat_database \u3002"]}, {"title": "\u91c7\u96c6\u4e0e\u91cd\u7f6e\u8bed\u4e49", "paragraphs": ["\u91cd\u7f6e\u8303\u56f4\u548c\u53ef\u89c1\u6027\u8bf7\u53c2\u9605\u4e0b\u65b9\u540c\u7248\u672c\u7684\u7edf\u8ba1\u4fe1\u606f\u6536\u96c6\u4e0e\u89c6\u56fe\u6587\u6863\u3002\u4e0d\u6839\u636e\u5b57\u6bb5\u540d\u79f0\u63a8\u65ad\u5404\u5b57\u6bb5\u7684\u91cd\u7f6e\u89c4\u5219\u3002"]}, {"code": "SELECT blk_read_time FROM pg_catalog.pg_stat_database;", "title": "\u67e5\u770b\u6b64\u5b57\u6bb5", "paragraphs": ["\u793a\u4f8b\u67e5\u8be2\uff1b\u4e0d\u8868\u793a\u5df2\u6267\u884c\uff0c\u4e5f\u4e0d\u63d0\u4f9b\u5b9e\u6d4b\u503c\u3002"]}], "source_only": false, "localization": {"status": "complete", "sources": [{"url": "/docs/12/monitoring-stats.html", "method": "same-major semantic node", "sha256": "d9fccd3a149dcb1b042346f59f216885cbd5a1cef552dae403a74da45af66cd0", "language": "zh", "matched_nodes": ["#MONITORING-STATS/div[6]/div[45]/div[1]/table[0]/tbody[2]/tr[18]/td[2]", "#MONITORING-STATS/div[6]/div[8]/div[1]/table[0]/tbody[2]/tr[2]/td[1]"]}], "language": "zh", "original_text": {"/versions/12/description/0": "Time spent reading data file blocks by backends in this database, in milliseconds", "/versions/12/facts/0/label": "View", "/versions/12/facts/1/label": "Field", "/versions/12/facts/2/label": "SQL type", "/versions/12/facts/3/label": "Units named in the field definition", "/versions/12/facts/4/label": "Reset observation", "/versions/12/facts/4/value": "Time at which these statistics were last reset", "/versions/12/related/0/label": "pg_stat_database columns", "/versions/12/related/1/label": "Statistics collection and reset functions", "/versions/12/sections/0/title": "View semantics", "/versions/12/sections/1/title": "Collection and reset context", "/versions/12/sections/2/title": "Inspect this field", "/versions/12/sections/0/paragraphs/0": "One row per database, showing database-wide statistics. See pg_stat_database for details.", "/versions/12/sections/1/paragraphs/0": "Read the same-version statistics collection and view documentation below for reset scope and visibility. No per-field reset rule is inferred from the field name.", "/versions/12/sections/2/paragraphs/0": "Example query; no execution result or measured value is asserted."}, "fallback_fields": [], "source_language": "en", "original_snapshot_sha256": "4bcf8d7cb84c0574f36f1c32eee0127c26587723c2f4cd104ee9270034db05a0", "canonical_center_text_hash": "e1ee3776884a51024c251fd2bed49ff355a60398e7207cc1b23ad19eb5e143eb"}, "description_zh": "\u6b64\u6570\u636e\u5e93\u7684\u540e\u7aef\u8bfb\u53d6\u6570\u636e\u6587\u4ef6\u5757\u6240\u82b1\u8d39\u7684\u65f6\u95f4\uff0c\u5355\u4f4d\u4e3a\u6beb\u79d2", "comparison_data": {"view": "pg_stat_database", "field": "blk_read_time", "sql_type": "double precision", "units_mentioned": ["blocks", "milliseconds"]}, "comparison_hash": "c28bef2f31d56d506979b87f818489284f8c0a9025ea0ad48c4886b39bdc6456", "manual_language": "zh", "units_mentioned": ["blocks", "milliseconds"], "description_zh_html": "<p>pg_stat_database.blk_read_time \u7edf\u8ba1\u5b57\u6bb5\u3002</p><dl><dt>\u89c6\u56fe</dt><dd><code>pg_stat_database</code></dd><dt>\u5b57\u6bb5</dt><dd><code>blk_read_time</code></dd><dt>SQL \u7c7b\u578b</dt><dd><code>double precision</code></dd></dl><h3>\u540c\u7248\u672c\u4e2d\u6587\u624b\u518c\u5b9a\u4e49</h3><p>\u6b64\u6570\u636e\u5e93\u7684\u540e\u7aef\u8bfb\u53d6\u6570\u636e\u6587\u4ef6\u5757\u6240\u82b1\u8d39\u7684\u65f6\u95f4\uff0c\u5355\u4f4d\u4e3a\u6beb\u79d2</p><p><a href=\"/zh/docs/12/monitoring-stats.html\" rel=\"nofollow\">\u67e5\u770b\u5b8c\u6574\u4e2d\u6587\u624b\u518c\u4e0e\u4e0a\u4e0b\u6587</a>\u3002</p>"}, "13": {"view": "pg_stat_database", "facts": [{"label": "\u89c6\u56fe", "value": "pg_stat_database"}, {"label": "\u5b57\u6bb5", "value": "blk_read_time"}, {"label": "SQL \u7c7b\u578b", "value": "double precision"}, {"label": "\u5b57\u6bb5\u5b9a\u4e49\u8bb0\u8f7d\u7684\u5355\u4f4d", "value": "blocks, milliseconds"}, {"label": "\u91cd\u7f6e\u6761\u4ef6", "value": "\u8fd9\u4e9b\u7edf\u8ba1\u4e0a\u6b21\u91cd\u7f6e\u7684\u65f6\u95f4"}], "field": "blk_read_time", "tables": [], "related": [{"url": "/wiki/catalog/pg_stat_database/?v=13", "label": "pg_stat_database \u5b57\u6bb5"}, {"url": "/docs/13/monitoring-stats.html", "label": "\u7edf\u8ba1\u6536\u96c6\u4e0e\u91cd\u7f6e\u51fd\u6570"}], "release": {"ref": "https://ftp.postgresql.org/pub/source/v13.23/postgresql-13.23.tar.bz2", "label": "13.23", "major": "13", "channel": "stable", "revision": "6ec3c82726af92b7dec873fa1cdf881eca92a4219787dfad05acb6b10e041fd6"}, "sources": [{"url": "/docs/13/monitoring-stats.html#PG-STAT-DATABASE-VIEW", "path": "monitoring-stats.html", "label": "PostgreSQL 13 English manual", "sha256": "a8ec0d199d592259f260a41ccb2821e582cd6dae1014a784e1e86203740afcb0"}], "zh_from": {"kind": "same-version-chinese-manual-with-source-derived-structured-summary", "manual": {"url": "/zh/docs/13/monitoring-stats.html#", "anchor": "", "column": "blk_read_time", "locale": "zh-Hans", "version": "13", "build_id": 66, "page_key": "monitoring-stats.html", "extraction": "exact-catalog-field", "source_hash": "57373e7034db8002ff131250ff4fe83a8251455fad5580597598b0863a245ece", "source_revision": "unknown:rendered-translation-baseline", "translation_revision": "snapshot:sha256:a13a825c39f0268ef1cfe9137e283e38d0da73b2d7894f0733c7b26372a4f6a4"}, "body_sha256": "5960e0b8335726d467c867dbdb83f5ab82d4a647bf0c38f14e98ce102e4c3a54", "runtime_rerun": false, "authored_translation": "source-derived-structured-summary", "source_facts_revision": "6ec3c82726af92b7dec873fa1cdf881eca92a4219787dfad05acb6b10e041fd6"}, "facts_zh": [{"label": "\u89c6\u56fe", "value": "pg_stat_database"}, {"label": "\u5b57\u6bb5", "value": "blk_read_time"}, {"label": "SQL \u7c7b\u578b", "value": "double precision"}, {"label": "\u5b57\u6bb5\u5b9a\u4e49\u8bb0\u8f7d\u7684\u5355\u4f4d", "value": "blocks, milliseconds"}, {"label": "\u91cd\u7f6e\u6761\u4ef6", "value": "\u8fd9\u4e9b\u7edf\u8ba1\u4e0a\u6b21\u91cd\u7f6e\u7684\u65f6\u95f4"}], "sections": [{"title": "\u89c6\u56fe\u8bed\u4e49", "paragraphs": ["pg_stat_database \u89c6\u56fe\u5c06\u5305\u542b\u4e00\u884c\u7528\u4e8e\u96c6\u7c07\u4e2d\u7684\u6bcf\u4e2a\u6570\u636e\u5e93\uff0c\u52a0\u4e00\u884c\u7528\u4e8e\u5171\u4eab\u5bf9\u8c61\uff0c\u663e\u793a\u6570\u636e\u5e93\u8303\u56f4\u7684\u7edf\u8ba1\u4fe1\u606f\u3002"]}, {"title": "\u91c7\u96c6\u4e0e\u91cd\u7f6e\u8bed\u4e49", "paragraphs": ["\u91cd\u7f6e\u8303\u56f4\u548c\u53ef\u89c1\u6027\u8bf7\u53c2\u9605\u4e0b\u65b9\u540c\u7248\u672c\u7684\u7edf\u8ba1\u4fe1\u606f\u6536\u96c6\u4e0e\u89c6\u56fe\u6587\u6863\u3002\u4e0d\u6839\u636e\u5b57\u6bb5\u540d\u79f0\u63a8\u65ad\u5404\u5b57\u6bb5\u7684\u91cd\u7f6e\u89c4\u5219\u3002"]}, {"code": "SELECT blk_read_time FROM pg_catalog.pg_stat_database;", "title": "\u67e5\u770b\u6b64\u5b57\u6bb5", "paragraphs": ["\u793a\u4f8b\u67e5\u8be2\uff1b\u4e0d\u8868\u793a\u5df2\u6267\u884c\uff0c\u4e5f\u4e0d\u63d0\u4f9b\u5b9e\u6d4b\u503c\u3002"]}], "sql_type": "double precision", "center_zh": {"title": "pg_stat_database.blk_read_time", "locale": "zh-Hans", "source": {"key": "pg_stat_database-blk_read_time", "locale": "zh-Hans", "version": "13", "text_hash": "1ee247b4015a95a0fc31c2b64003d37cd488a527219260a1ec7e97f48a1f2651", "collection": "metric", "dataset_hash": "7c31b524dfe136022d39a6ae8dcfac6b3bbd5f8fdaf422536599981252aff0c9", "source_database": "center", "source_revision": "6ec3c82726af92b7dec873fa1cdf881eca92a4219787dfad05acb6b10e041fd6"}, "payload": {"facts": [{"label": "\u89c6\u56fe", "value": "pg_stat_database"}, {"label": "\u5b57\u6bb5", "value": "blk_read_time"}, {"label": "SQL \u7c7b\u578b", "value": "double precision"}, {"label": "\u5b57\u6bb5\u5b9a\u4e49\u8bb0\u8f7d\u7684\u5355\u4f4d", "value": "blocks, milliseconds"}, {"label": "\u91cd\u7f6e\u6761\u4ef6", "value": "\u8fd9\u4e9b\u7edf\u8ba1\u4e0a\u6b21\u91cd\u7f6e\u7684\u65f6\u95f4"}], "tables": [], "zh_from": {"kind": "same-version-chinese-manual-with-source-derived-structured-summary", "manual": {"url": "/zh/docs/13/monitoring-stats.html#", "anchor": "", "column": "blk_read_time", "locale": "zh-Hans", "version": "13", "build_id": 66, "page_key": "monitoring-stats.html", "extraction": "exact-catalog-field", "source_hash": "57373e7034db8002ff131250ff4fe83a8251455fad5580597598b0863a245ece", "source_revision": "unknown:rendered-translation-baseline", "translation_revision": "snapshot:sha256:a13a825c39f0268ef1cfe9137e283e38d0da73b2d7894f0733c7b26372a4f6a4"}, "body_sha256": "5960e0b8335726d467c867dbdb83f5ab82d4a647bf0c38f14e98ce102e4c3a54", "runtime_rerun": false, "authored_translation": "source-derived-structured-summary", "source_facts_revision": "6ec3c82726af92b7dec873fa1cdf881eca92a4219787dfad05acb6b10e041fd6"}, "sections": [{"title": "\u89c6\u56fe\u8bed\u4e49", "paragraphs": ["pg_stat_database \u89c6\u56fe\u5c06\u5305\u542b\u4e00\u884c\u7528\u4e8e\u96c6\u7c07\u4e2d\u7684\u6bcf\u4e2a\u6570\u636e\u5e93\uff0c\u52a0\u4e00\u884c\u7528\u4e8e\u5171\u4eab\u5bf9\u8c61\uff0c\u663e\u793a\u6570\u636e\u5e93\u8303\u56f4\u7684\u7edf\u8ba1\u4fe1\u606f\u3002"]}, {"title": "\u91c7\u96c6\u4e0e\u91cd\u7f6e\u8bed\u4e49", "paragraphs": ["\u91cd\u7f6e\u8303\u56f4\u548c\u53ef\u89c1\u6027\u8bf7\u53c2\u9605\u4e0b\u65b9\u540c\u7248\u672c\u7684\u7edf\u8ba1\u4fe1\u606f\u6536\u96c6\u4e0e\u89c6\u56fe\u6587\u6863\u3002\u4e0d\u6839\u636e\u5b57\u6bb5\u540d\u79f0\u63a8\u65ad\u5404\u5b57\u6bb5\u7684\u91cd\u7f6e\u89c4\u5219\u3002"]}, {"code": "SELECT blk_read_time FROM pg_catalog.pg_stat_database;", "title": "\u67e5\u770b\u6b64\u5b57\u6bb5", "paragraphs": ["\u793a\u4f8b\u67e5\u8be2\uff1b\u4e0d\u8868\u793a\u5df2\u6267\u884c\uff0c\u4e5f\u4e0d\u63d0\u4f9b\u5b9e\u6d4b\u503c\u3002"]}], "description_zh": "\u5728\u8fd9\u4e2a\u6570\u636e\u5e93\u4e2d\u901a\u8fc7\u540e\u7aef\u8bfb\u53d6\u6570\u636e\u6587\u4ef6\u5757\u6240\u82b1\u8d39\u7684\u65f6\u95f4\uff0c\u4ee5\u6beb\u79d2\u4e3a\u5355\u4f4d\uff08\u5982\u679c\u542f\u7528\u4e86 track_io_timing\uff0c\u5426\u5219\u4e3a\u96f6\uff09", "description_zh_html": "<p>pg_stat_database.blk_read_time \u7edf\u8ba1\u5b57\u6bb5\u3002</p><dl><dt>\u89c6\u56fe</dt><dd><code>pg_stat_database</code></dd><dt>\u5b57\u6bb5</dt><dd><code>blk_read_time</code></dd><dt>SQL \u7c7b\u578b</dt><dd><code>double precision</code></dd></dl><h3>\u540c\u7248\u672c\u4e2d\u6587\u624b\u518c\u5b9a\u4e49</h3><p>\u5728\u8fd9\u4e2a\u6570\u636e\u5e93\u4e2d\u901a\u8fc7\u540e\u7aef\u8bfb\u53d6\u6570\u636e\u6587\u4ef6\u5757\u6240\u82b1\u8d39\u7684\u65f6\u95f4\uff0c\u4ee5\u6beb\u79d2\u4e3a\u5355\u4f4d\uff08\u5982\u679c\u542f\u7528\u4e86 track_io_timing\uff0c\u5426\u5219\u4e3a\u96f6\uff09</p><p><a href=\"/zh/docs/13/monitoring-stats.html#\">\u67e5\u770b\u5b8c\u6574\u4e2d\u6587\u624b\u518c\u4e0e\u4e0a\u4e0b\u6587</a>\u3002</p>"}, "summary": "\u5728\u8fd9\u4e2a\u6570\u636e\u5e93\u4e2d\u901a\u8fc7\u540e\u7aef\u8bfb\u53d6\u6570\u636e\u6587\u4ef6\u5757\u6240\u82b1\u8d39\u7684\u65f6\u95f4\uff0c\u4ee5\u6beb\u79d2\u4e3a\u5355\u4f4d\uff08\u5982\u679c\u542f\u7528\u4e86 track_io_timing\uff0c\u5426\u5219\u4e3a\u96f6\uff09", "version": "13", "link_map": {"/zh/docs/13/monitoring-stats.html": "/docs/13/monitoring-stats.html"}, "body_html": "<p>pg_stat_database.blk_read_time \u7edf\u8ba1\u5b57\u6bb5\u3002</p><dl><dt>\u89c6\u56fe</dt><dd><code>pg_stat_database</code></dd><dt>\u5b57\u6bb5</dt><dd><code>blk_read_time</code></dd><dt>SQL \u7c7b\u578b</dt><dd><code>double precision</code></dd></dl><h3>\u540c\u7248\u672c\u4e2d\u6587\u624b\u518c\u5b9a\u4e49</h3><p>\u5728\u8fd9\u4e2a\u6570\u636e\u5e93\u4e2d\u901a\u8fc7\u540e\u7aef\u8bfb\u53d6\u6570\u636e\u6587\u4ef6\u5757\u6240\u82b1\u8d39\u7684\u65f6\u95f4\uff0c\u4ee5\u6beb\u79d2\u4e3a\u5355\u4f4d\uff08\u5982\u679c\u542f\u7528\u4e86 track_io_timing\uff0c\u5426\u5219\u4e3a\u96f6\uff09</p><p><a href=\"/zh/docs/13/monitoring-stats.html\" rel=\"nofollow\">\u67e5\u770b\u5b8c\u6574\u4e2d\u6587\u624b\u518c\u4e0e\u4e0a\u4e0b\u6587</a>\u3002</p>", "body_sha256": "3c70048d00edc2f44027db0d9c007fda61ea0c50fe72a0695ad1a93c5cc5eb8d", "content_hash": "1ee247b4015a95a0fc31c2b64003d37cd488a527219260a1ec7e97f48a1f2651", "source_database": "center", "source_revision": "6ec3c82726af92b7dec873fa1cdf881eca92a4219787dfad05acb6b10e041fd6"}, "signature": "SELECT blk_read_time FROM pg_catalog.pg_stat_database;", "tables_zh": [], "documented": true, "description": ["\u5728\u8fd9\u4e2a\u6570\u636e\u5e93\u4e2d\u901a\u8fc7\u540e\u7aef\u8bfb\u53d6\u6570\u636e\u6587\u4ef6\u5757\u6240\u82b1\u8d39\u7684\u65f6\u95f4\uff0c\u4ee5\u6beb\u79d2\u4e3a\u5355\u4f4d\uff08\u5982\u679c\u542f\u7528\u4e86 track_io_timing\uff0c\u5426\u5219\u4e3a\u96f6\uff09"], "manual_html": "", "manual_path": "/docs/13/monitoring-stats.html", "sections_zh": [{"title": "\u89c6\u56fe\u8bed\u4e49", "paragraphs": ["pg_stat_database \u89c6\u56fe\u5c06\u5305\u542b\u4e00\u884c\u7528\u4e8e\u96c6\u7c07\u4e2d\u7684\u6bcf\u4e2a\u6570\u636e\u5e93\uff0c\u52a0\u4e00\u884c\u7528\u4e8e\u5171\u4eab\u5bf9\u8c61\uff0c\u663e\u793a\u6570\u636e\u5e93\u8303\u56f4\u7684\u7edf\u8ba1\u4fe1\u606f\u3002"]}, {"title": "\u91c7\u96c6\u4e0e\u91cd\u7f6e\u8bed\u4e49", "paragraphs": ["\u91cd\u7f6e\u8303\u56f4\u548c\u53ef\u89c1\u6027\u8bf7\u53c2\u9605\u4e0b\u65b9\u540c\u7248\u672c\u7684\u7edf\u8ba1\u4fe1\u606f\u6536\u96c6\u4e0e\u89c6\u56fe\u6587\u6863\u3002\u4e0d\u6839\u636e\u5b57\u6bb5\u540d\u79f0\u63a8\u65ad\u5404\u5b57\u6bb5\u7684\u91cd\u7f6e\u89c4\u5219\u3002"]}, {"code": "SELECT blk_read_time FROM pg_catalog.pg_stat_database;", "title": "\u67e5\u770b\u6b64\u5b57\u6bb5", "paragraphs": ["\u793a\u4f8b\u67e5\u8be2\uff1b\u4e0d\u8868\u793a\u5df2\u6267\u884c\uff0c\u4e5f\u4e0d\u63d0\u4f9b\u5b9e\u6d4b\u503c\u3002"]}], "source_only": false, "localization": {"status": "complete", "sources": [{"url": "/docs/13/monitoring-stats.html", "method": "same-major semantic node", "sha256": "1afff4ad1a4bc0c7e04a62d13adebcc1d39c30aca969618fab0cca8d0a115a96", "language": "zh", "matched_nodes": ["#MONITORING-STATS/div[15]/div[3]/div[1]/table[0]/tbody[2]/tr[18]/td[0]/p[1]", "#MONITORING-STATS/div[15]/p[2]"]}], "language": "zh", "original_text": {"/versions/13/description/0": "Time spent reading data file blocks by backends in this database, in milliseconds (if track_io_timing is enabled, otherwise zero)", "/versions/13/facts/0/label": "View", "/versions/13/facts/1/label": "Field", "/versions/13/facts/2/label": "SQL type", "/versions/13/facts/3/label": "Units named in the field definition", "/versions/13/facts/4/label": "Reset observation", "/versions/13/facts/4/value": "Time at which these statistics were last reset", "/versions/13/related/0/label": "pg_stat_database columns", "/versions/13/related/1/label": "Statistics collection and reset functions", "/versions/13/sections/0/title": "View semantics", "/versions/13/sections/1/title": "Collection and reset context", "/versions/13/sections/2/title": "Inspect this field", "/versions/13/sections/0/paragraphs/0": "The pg_stat_database view will contain one row for each database in the cluster, plus one for shared objects, showing database-wide statistics.", "/versions/13/sections/1/paragraphs/0": "Read the same-version statistics collection and view documentation below for reset scope and visibility. No per-field reset rule is inferred from the field name.", "/versions/13/sections/2/paragraphs/0": "Example query; no execution result or measured value is asserted."}, "fallback_fields": [], "source_language": "en", "original_snapshot_sha256": "d0f4adb64dec864fa103553a0b9226e01c23abce1821ba0e86914c22be4ed343", "canonical_center_text_hash": "1ee247b4015a95a0fc31c2b64003d37cd488a527219260a1ec7e97f48a1f2651"}, "description_zh": "\u5728\u8fd9\u4e2a\u6570\u636e\u5e93\u4e2d\u901a\u8fc7\u540e\u7aef\u8bfb\u53d6\u6570\u636e\u6587\u4ef6\u5757\u6240\u82b1\u8d39\u7684\u65f6\u95f4\uff0c\u4ee5\u6beb\u79d2\u4e3a\u5355\u4f4d\uff08\u5982\u679c\u542f\u7528\u4e86 track_io_timing\uff0c\u5426\u5219\u4e3a\u96f6\uff09", "comparison_data": {"view": "pg_stat_database", "field": "blk_read_time", "sql_type": "double precision", "units_mentioned": ["blocks", "milliseconds"]}, "comparison_hash": "c28bef2f31d56d506979b87f818489284f8c0a9025ea0ad48c4886b39bdc6456", "manual_language": "zh", "units_mentioned": ["blocks", "milliseconds"], "description_zh_html": "<p>pg_stat_database.blk_read_time \u7edf\u8ba1\u5b57\u6bb5\u3002</p><dl><dt>\u89c6\u56fe</dt><dd><code>pg_stat_database</code></dd><dt>\u5b57\u6bb5</dt><dd><code>blk_read_time</code></dd><dt>SQL \u7c7b\u578b</dt><dd><code>double precision</code></dd></dl><h3>\u540c\u7248\u672c\u4e2d\u6587\u624b\u518c\u5b9a\u4e49</h3><p>\u5728\u8fd9\u4e2a\u6570\u636e\u5e93\u4e2d\u901a\u8fc7\u540e\u7aef\u8bfb\u53d6\u6570\u636e\u6587\u4ef6\u5757\u6240\u82b1\u8d39\u7684\u65f6\u95f4\uff0c\u4ee5\u6beb\u79d2\u4e3a\u5355\u4f4d\uff08\u5982\u679c\u542f\u7528\u4e86 track_io_timing\uff0c\u5426\u5219\u4e3a\u96f6\uff09</p><p><a href=\"/zh/docs/13/monitoring-stats.html\" rel=\"nofollow\">\u67e5\u770b\u5b8c\u6574\u4e2d\u6587\u624b\u518c\u4e0e\u4e0a\u4e0b\u6587</a>\u3002</p>"}, "14": {"view": "pg_stat_database", "facts": [{"label": "\u89c6\u56fe", "value": "pg_stat_database"}, {"label": "\u5b57\u6bb5", "value": "blk_read_time"}, {"label": "SQL \u7c7b\u578b", "value": "double precision"}, {"label": "\u5b57\u6bb5\u5b9a\u4e49\u8bb0\u8f7d\u7684\u5355\u4f4d", "value": "blocks, milliseconds"}, {"label": "\u91cd\u7f6e\u6761\u4ef6", "value": "\u8fd9\u4e9b\u7edf\u8ba1\u4e0a\u6b21\u91cd\u7f6e\u7684\u65f6\u95f4"}], "field": "blk_read_time", "tables": [], "related": [{"url": "/wiki/catalog/pg_stat_database/?v=14", "label": "pg_stat_database \u5b57\u6bb5"}, {"url": "/docs/14/monitoring-stats.html", "label": "\u7edf\u8ba1\u6536\u96c6\u4e0e\u91cd\u7f6e\u51fd\u6570"}], "release": {"ref": "https://ftp.postgresql.org/pub/source/v14.24/postgresql-14.24.tar.bz2", "label": "14.24", "major": "14", "channel": "stable", "revision": "a7fa7ed3d558172355f51406097a7bd4f6b473be80f311ef7cda96bf383d8897"}, "sources": [{"url": "/docs/14/monitoring-stats.html#PG-STAT-DATABASE-VIEW", "path": "monitoring-stats.html", "label": "PostgreSQL 14 English manual", "sha256": "1852c6205d68e465d08dd8f75e3b6bfdd4a475ee8d79886e2dcff6bff8e2d243"}], "zh_from": {"kind": "same-version-chinese-manual-with-source-derived-structured-summary", "manual": {"url": "/zh/docs/14/monitoring-stats.html#", "anchor": "", "column": "blk_read_time", "locale": "zh-Hans", "version": "14", "build_id": 99, "page_key": "monitoring-stats.html", "extraction": "exact-catalog-field", "source_hash": "5d0b3feda6ee0197d76fdc68b8b0b9837def8844a3463bc79c380c92ca629dbb", "source_revision": "unknown:rendered-translation-baseline", "translation_revision": "git:b1b500221dbe5437cfca004d6b04d3f6e422765d;html-sha256:87e6aa4fd6e1ec85c5f4a6de4f5647cfd9e5de734ca2c266d32b6d6192c662ef"}, "body_sha256": "7642d5d1f55187cf138e8e544ddf00159019b3e45172a660d6a1b46c28e4b09f", "runtime_rerun": false, "authored_translation": "source-derived-structured-summary", "source_facts_revision": "a7fa7ed3d558172355f51406097a7bd4f6b473be80f311ef7cda96bf383d8897"}, "facts_zh": [{"label": "\u89c6\u56fe", "value": "pg_stat_database"}, {"label": "\u5b57\u6bb5", "value": "blk_read_time"}, {"label": "SQL \u7c7b\u578b", "value": "double precision"}, {"label": "\u5b57\u6bb5\u5b9a\u4e49\u8bb0\u8f7d\u7684\u5355\u4f4d", "value": "blocks, milliseconds"}, {"label": "\u91cd\u7f6e\u6761\u4ef6", "value": "\u8fd9\u4e9b\u7edf\u8ba1\u4e0a\u6b21\u91cd\u7f6e\u7684\u65f6\u95f4"}], "sections": [{"title": "\u89c6\u56fe\u8bed\u4e49", "paragraphs": ["pg_stat_database \u89c6\u56fe\u5c06\u5305\u542b\u4e00\u884c\u7528\u4e8e\u96c6\u7c07\u4e2d\u7684\u6bcf\u4e2a\u6570\u636e\u5e93\uff0c\u52a0\u4e00\u884c\u7528\u4e8e\u5171\u4eab\u5bf9\u8c61\uff0c\u663e\u793a\u6570\u636e\u5e93\u8303\u56f4\u7684\u7edf\u8ba1\u4fe1\u606f\u3002"]}, {"title": "\u91c7\u96c6\u4e0e\u91cd\u7f6e\u8bed\u4e49", "paragraphs": ["\u91cd\u7f6e\u8303\u56f4\u548c\u53ef\u89c1\u6027\u8bf7\u53c2\u9605\u4e0b\u65b9\u540c\u7248\u672c\u7684\u7edf\u8ba1\u4fe1\u606f\u6536\u96c6\u4e0e\u89c6\u56fe\u6587\u6863\u3002\u4e0d\u6839\u636e\u5b57\u6bb5\u540d\u79f0\u63a8\u65ad\u5404\u5b57\u6bb5\u7684\u91cd\u7f6e\u89c4\u5219\u3002"]}, {"code": "SELECT blk_read_time FROM pg_catalog.pg_stat_database;", "title": "\u67e5\u770b\u6b64\u5b57\u6bb5", "paragraphs": ["\u793a\u4f8b\u67e5\u8be2\uff1b\u4e0d\u8868\u793a\u5df2\u6267\u884c\uff0c\u4e5f\u4e0d\u63d0\u4f9b\u5b9e\u6d4b\u503c\u3002"]}], "sql_type": "double precision", "center_zh": {"title": "pg_stat_database.blk_read_time", "locale": "zh-Hans", "source": {"key": "pg_stat_database-blk_read_time", "locale": "zh-Hans", "version": "14", "text_hash": "6e920b56e3b8ffe9ff6ed9db5159e3b0c5409a8b46aa4da121213137fb2d3623", "collection": "metric", "dataset_hash": "7c31b524dfe136022d39a6ae8dcfac6b3bbd5f8fdaf422536599981252aff0c9", "source_database": "center", "source_revision": "a7fa7ed3d558172355f51406097a7bd4f6b473be80f311ef7cda96bf383d8897"}, "payload": {"facts": [{"label": "\u89c6\u56fe", "value": "pg_stat_database"}, {"label": "\u5b57\u6bb5", "value": "blk_read_time"}, {"label": "SQL \u7c7b\u578b", "value": "double precision"}, {"label": "\u5b57\u6bb5\u5b9a\u4e49\u8bb0\u8f7d\u7684\u5355\u4f4d", "value": "blocks, milliseconds"}, {"label": "\u91cd\u7f6e\u6761\u4ef6", "value": "\u8fd9\u4e9b\u7edf\u8ba1\u4e0a\u6b21\u91cd\u7f6e\u7684\u65f6\u95f4"}], "tables": [], "zh_from": {"kind": "same-version-chinese-manual-with-source-derived-structured-summary", "manual": {"url": "/zh/docs/14/monitoring-stats.html#", "anchor": "", "column": "blk_read_time", "locale": "zh-Hans", "version": "14", "build_id": 99, "page_key": "monitoring-stats.html", "extraction": "exact-catalog-field", "source_hash": "5d0b3feda6ee0197d76fdc68b8b0b9837def8844a3463bc79c380c92ca629dbb", "source_revision": "unknown:rendered-translation-baseline", "translation_revision": "git:b1b500221dbe5437cfca004d6b04d3f6e422765d;html-sha256:87e6aa4fd6e1ec85c5f4a6de4f5647cfd9e5de734ca2c266d32b6d6192c662ef"}, "body_sha256": "7642d5d1f55187cf138e8e544ddf00159019b3e45172a660d6a1b46c28e4b09f", "runtime_rerun": false, "authored_translation": "source-derived-structured-summary", "source_facts_revision": "a7fa7ed3d558172355f51406097a7bd4f6b473be80f311ef7cda96bf383d8897"}, "sections": [{"title": "\u89c6\u56fe\u8bed\u4e49", "paragraphs": ["pg_stat_database \u89c6\u56fe\u5c06\u5305\u542b\u4e00\u884c\u7528\u4e8e\u96c6\u7c07\u4e2d\u7684\u6bcf\u4e2a\u6570\u636e\u5e93\uff0c\u52a0\u4e00\u884c\u7528\u4e8e\u5171\u4eab\u5bf9\u8c61\uff0c\u663e\u793a\u6570\u636e\u5e93\u8303\u56f4\u7684\u7edf\u8ba1\u4fe1\u606f\u3002"]}, {"title": "\u91c7\u96c6\u4e0e\u91cd\u7f6e\u8bed\u4e49", "paragraphs": ["\u91cd\u7f6e\u8303\u56f4\u548c\u53ef\u89c1\u6027\u8bf7\u53c2\u9605\u4e0b\u65b9\u540c\u7248\u672c\u7684\u7edf\u8ba1\u4fe1\u606f\u6536\u96c6\u4e0e\u89c6\u56fe\u6587\u6863\u3002\u4e0d\u6839\u636e\u5b57\u6bb5\u540d\u79f0\u63a8\u65ad\u5404\u5b57\u6bb5\u7684\u91cd\u7f6e\u89c4\u5219\u3002"]}, {"code": "SELECT blk_read_time FROM pg_catalog.pg_stat_database;", "title": "\u67e5\u770b\u6b64\u5b57\u6bb5", "paragraphs": ["\u793a\u4f8b\u67e5\u8be2\uff1b\u4e0d\u8868\u793a\u5df2\u6267\u884c\uff0c\u4e5f\u4e0d\u63d0\u4f9b\u5b9e\u6d4b\u503c\u3002"]}], "description_zh": "\u5728\u8fd9\u4e2a\u6570\u636e\u5e93\u4e2d\u901a\u8fc7\u540e\u7aef\u8bfb\u53d6\u6570\u636e\u6587\u4ef6\u5757\u6240\u82b1\u8d39\u7684\u65f6\u95f4\uff0c\u4ee5\u6beb\u79d2\u4e3a\u5355\u4f4d\uff08\u5982\u679c\u542f\u7528\u4e86 track_io_timing\uff0c\u5426\u5219\u4e3a\u96f6\uff09", "description_zh_html": "<p>pg_stat_database.blk_read_time \u7edf\u8ba1\u5b57\u6bb5\u3002</p><dl><dt>\u89c6\u56fe</dt><dd><code>pg_stat_database</code></dd><dt>\u5b57\u6bb5</dt><dd><code>blk_read_time</code></dd><dt>SQL \u7c7b\u578b</dt><dd><code>double precision</code></dd></dl><h3>\u540c\u7248\u672c\u4e2d\u6587\u624b\u518c\u5b9a\u4e49</h3><p>\u5728\u8fd9\u4e2a\u6570\u636e\u5e93\u4e2d\u901a\u8fc7\u540e\u7aef\u8bfb\u53d6\u6570\u636e\u6587\u4ef6\u5757\u6240\u82b1\u8d39\u7684\u65f6\u95f4\uff0c\u4ee5\u6beb\u79d2\u4e3a\u5355\u4f4d\uff08\u5982\u679c\u542f\u7528\u4e86 track_io_timing\uff0c\u5426\u5219\u4e3a\u96f6\uff09</p><p><a href=\"/zh/docs/14/monitoring-stats.html#\">\u67e5\u770b\u5b8c\u6574\u4e2d\u6587\u624b\u518c\u4e0e\u4e0a\u4e0b\u6587</a>\u3002</p>"}, "summary": "\u5728\u8fd9\u4e2a\u6570\u636e\u5e93\u4e2d\u901a\u8fc7\u540e\u7aef\u8bfb\u53d6\u6570\u636e\u6587\u4ef6\u5757\u6240\u82b1\u8d39\u7684\u65f6\u95f4\uff0c\u4ee5\u6beb\u79d2\u4e3a\u5355\u4f4d\uff08\u5982\u679c\u542f\u7528\u4e86 track_io_timing\uff0c\u5426\u5219\u4e3a\u96f6\uff09", "version": "14", "link_map": {"/zh/docs/14/monitoring-stats.html": "/docs/14/monitoring-stats.html"}, "body_html": "<p>pg_stat_database.blk_read_time \u7edf\u8ba1\u5b57\u6bb5\u3002</p><dl><dt>\u89c6\u56fe</dt><dd><code>pg_stat_database</code></dd><dt>\u5b57\u6bb5</dt><dd><code>blk_read_time</code></dd><dt>SQL \u7c7b\u578b</dt><dd><code>double precision</code></dd></dl><h3>\u540c\u7248\u672c\u4e2d\u6587\u624b\u518c\u5b9a\u4e49</h3><p>\u5728\u8fd9\u4e2a\u6570\u636e\u5e93\u4e2d\u901a\u8fc7\u540e\u7aef\u8bfb\u53d6\u6570\u636e\u6587\u4ef6\u5757\u6240\u82b1\u8d39\u7684\u65f6\u95f4\uff0c\u4ee5\u6beb\u79d2\u4e3a\u5355\u4f4d\uff08\u5982\u679c\u542f\u7528\u4e86 track_io_timing\uff0c\u5426\u5219\u4e3a\u96f6\uff09</p><p><a href=\"/zh/docs/14/monitoring-stats.html\" rel=\"nofollow\">\u67e5\u770b\u5b8c\u6574\u4e2d\u6587\u624b\u518c\u4e0e\u4e0a\u4e0b\u6587</a>\u3002</p>", "body_sha256": "150718212869c9a3aca3bc11fdd916f649c3c3b1f764006add38a7dc550489e2", "content_hash": "6e920b56e3b8ffe9ff6ed9db5159e3b0c5409a8b46aa4da121213137fb2d3623", "source_database": "center", "source_revision": "a7fa7ed3d558172355f51406097a7bd4f6b473be80f311ef7cda96bf383d8897"}, "signature": "SELECT blk_read_time FROM pg_catalog.pg_stat_database;", "tables_zh": [], "documented": true, "description": ["\u5728\u8fd9\u4e2a\u6570\u636e\u5e93\u4e2d\u901a\u8fc7\u540e\u7aef\u8bfb\u53d6\u6570\u636e\u6587\u4ef6\u5757\u6240\u82b1\u8d39\u7684\u65f6\u95f4\uff0c\u4ee5\u6beb\u79d2\u4e3a\u5355\u4f4d\uff08\u5982\u679c\u542f\u7528\u4e86 track_io_timing\uff0c\u5426\u5219\u4e3a\u96f6\uff09"], "manual_html": "", "manual_path": "/docs/14/monitoring-stats.html", "sections_zh": [{"title": "\u89c6\u56fe\u8bed\u4e49", "paragraphs": ["pg_stat_database \u89c6\u56fe\u5c06\u5305\u542b\u4e00\u884c\u7528\u4e8e\u96c6\u7c07\u4e2d\u7684\u6bcf\u4e2a\u6570\u636e\u5e93\uff0c\u52a0\u4e00\u884c\u7528\u4e8e\u5171\u4eab\u5bf9\u8c61\uff0c\u663e\u793a\u6570\u636e\u5e93\u8303\u56f4\u7684\u7edf\u8ba1\u4fe1\u606f\u3002"]}, {"title": "\u91c7\u96c6\u4e0e\u91cd\u7f6e\u8bed\u4e49", "paragraphs": ["\u91cd\u7f6e\u8303\u56f4\u548c\u53ef\u89c1\u6027\u8bf7\u53c2\u9605\u4e0b\u65b9\u540c\u7248\u672c\u7684\u7edf\u8ba1\u4fe1\u606f\u6536\u96c6\u4e0e\u89c6\u56fe\u6587\u6863\u3002\u4e0d\u6839\u636e\u5b57\u6bb5\u540d\u79f0\u63a8\u65ad\u5404\u5b57\u6bb5\u7684\u91cd\u7f6e\u89c4\u5219\u3002"]}, {"code": "SELECT blk_read_time FROM pg_catalog.pg_stat_database;", "title": "\u67e5\u770b\u6b64\u5b57\u6bb5", "paragraphs": ["\u793a\u4f8b\u67e5\u8be2\uff1b\u4e0d\u8868\u793a\u5df2\u6267\u884c\uff0c\u4e5f\u4e0d\u63d0\u4f9b\u5b9e\u6d4b\u503c\u3002"]}], "source_only": false, "localization": {"status": "complete", "sources": [{"url": "/docs/14/monitoring-stats.html", "method": "same-major semantic node", "sha256": "a622383556aa74bc5f0e402d9cb6c1e6ce1d111286c0f4e45f55b81e34d57922", "language": "zh", "matched_nodes": ["#MONITORING-STATS/div[17]/div[3]/div[1]/table[0]/tbody[2]/tr[18]/td[0]/p[1]", "#MONITORING-STATS/div[17]/p[2]"]}], "language": "zh", "original_text": {"/versions/14/description/0": "Time spent reading data file blocks by backends in this database, in milliseconds (if track_io_timing is enabled, otherwise zero)", "/versions/14/facts/0/label": "View", "/versions/14/facts/1/label": "Field", "/versions/14/facts/2/label": "SQL type", "/versions/14/facts/3/label": "Units named in the field definition", "/versions/14/facts/4/label": "Reset observation", "/versions/14/facts/4/value": "Time at which these statistics were last reset", "/versions/14/related/0/label": "pg_stat_database columns", "/versions/14/related/1/label": "Statistics collection and reset functions", "/versions/14/sections/0/title": "View semantics", "/versions/14/sections/1/title": "Collection and reset context", "/versions/14/sections/2/title": "Inspect this field", "/versions/14/sections/0/paragraphs/0": "The pg_stat_database view will contain one row for each database in the cluster, plus one for shared objects, showing database-wide statistics.", "/versions/14/sections/1/paragraphs/0": "Read the same-version statistics collection and view documentation below for reset scope and visibility. No per-field reset rule is inferred from the field name.", "/versions/14/sections/2/paragraphs/0": "Example query; no execution result or measured value is asserted."}, "fallback_fields": [], "source_language": "en", "original_snapshot_sha256": "aa77bd7efb48fad8493b9b60a9d1b35e593710d406114637ec61afe7f5d7b3d7", "canonical_center_text_hash": "6e920b56e3b8ffe9ff6ed9db5159e3b0c5409a8b46aa4da121213137fb2d3623"}, "description_zh": "\u5728\u8fd9\u4e2a\u6570\u636e\u5e93\u4e2d\u901a\u8fc7\u540e\u7aef\u8bfb\u53d6\u6570\u636e\u6587\u4ef6\u5757\u6240\u82b1\u8d39\u7684\u65f6\u95f4\uff0c\u4ee5\u6beb\u79d2\u4e3a\u5355\u4f4d\uff08\u5982\u679c\u542f\u7528\u4e86 track_io_timing\uff0c\u5426\u5219\u4e3a\u96f6\uff09", "comparison_data": {"view": "pg_stat_database", "field": "blk_read_time", "sql_type": "double precision", "units_mentioned": ["blocks", "milliseconds"]}, "comparison_hash": "c28bef2f31d56d506979b87f818489284f8c0a9025ea0ad48c4886b39bdc6456", "manual_language": "zh", "units_mentioned": ["blocks", "milliseconds"], "description_zh_html": "<p>pg_stat_database.blk_read_time \u7edf\u8ba1\u5b57\u6bb5\u3002</p><dl><dt>\u89c6\u56fe</dt><dd><code>pg_stat_database</code></dd><dt>\u5b57\u6bb5</dt><dd><code>blk_read_time</code></dd><dt>SQL \u7c7b\u578b</dt><dd><code>double precision</code></dd></dl><h3>\u540c\u7248\u672c\u4e2d\u6587\u624b\u518c\u5b9a\u4e49</h3><p>\u5728\u8fd9\u4e2a\u6570\u636e\u5e93\u4e2d\u901a\u8fc7\u540e\u7aef\u8bfb\u53d6\u6570\u636e\u6587\u4ef6\u5757\u6240\u82b1\u8d39\u7684\u65f6\u95f4\uff0c\u4ee5\u6beb\u79d2\u4e3a\u5355\u4f4d\uff08\u5982\u679c\u542f\u7528\u4e86 track_io_timing\uff0c\u5426\u5219\u4e3a\u96f6\uff09</p><p><a href=\"/zh/docs/14/monitoring-stats.html\" rel=\"nofollow\">\u67e5\u770b\u5b8c\u6574\u4e2d\u6587\u624b\u518c\u4e0e\u4e0a\u4e0b\u6587</a>\u3002</p>"}, "15": {"view": "pg_stat_database", "facts": [{"label": "\u89c6\u56fe", "value": "pg_stat_database"}, {"label": "\u5b57\u6bb5", "value": "blk_read_time"}, {"label": "SQL \u7c7b\u578b", "value": "double precision"}, {"label": "\u5b57\u6bb5\u5b9a\u4e49\u8bb0\u8f7d\u7684\u5355\u4f4d", "value": "blocks, milliseconds"}, {"label": "\u91cd\u7f6e\u6761\u4ef6", "value": "\u8fd9\u4e9b\u7edf\u8ba1\u4e0a\u6b21\u91cd\u7f6e\u7684\u65f6\u95f4"}], "field": "blk_read_time", "tables": [], "related": [{"url": "/wiki/catalog/pg_stat_database/?v=15", "label": "pg_stat_database \u5b57\u6bb5"}, {"url": "/docs/15/monitoring-stats.html", "label": "\u7edf\u8ba1\u6536\u96c6\u4e0e\u91cd\u7f6e\u51fd\u6570"}], "release": {"ref": "https://ftp.postgresql.org/pub/source/v15.19/postgresql-15.19.tar.bz2", "label": "15.19", "major": "15", "channel": "stable", "revision": "e1a64a87a46b825b88c082e4518161a47aab53c45694964f8ba1df28f7859f89"}, "sources": [{"url": "/docs/15/monitoring-stats.html#PG-STAT-DATABASE-VIEW", "path": "monitoring-stats.html", "label": "PostgreSQL 15 English manual", "sha256": "034c0a2e99e6707e637bf4d6cfd819d39eddc1b4b7c1ec2a00f0b4f0fdb0a078"}], "zh_from": {"kind": "same-version-chinese-manual-with-source-derived-structured-summary", "manual": {"url": "/zh/docs/15/monitoring-stats.html#", "anchor": "", "column": "blk_read_time", "locale": "zh-Hans", "version": "15", "build_id": 101, "page_key": "monitoring-stats.html", "extraction": "exact-catalog-field", "source_hash": "a1f491ce4744d3b72b0eced7fad7c91762a4a8ba5ce0d61094b0616668450592", "source_revision": "unknown:rendered-translation-baseline", "translation_revision": "git:b1b500221dbe5437cfca004d6b04d3f6e422765d;html-sha256:6bce1a2df9170cb1146a1411c5547190856638221a6539e618ee1016c9f493ad"}, "body_sha256": "82a07dae9013df67292a117e8107957b14ef32da393d8e5ba9a23b0c7e889895", "runtime_rerun": false, "authored_translation": "source-derived-structured-summary", "source_facts_revision": "e1a64a87a46b825b88c082e4518161a47aab53c45694964f8ba1df28f7859f89"}, "facts_zh": [{"label": "\u89c6\u56fe", "value": "pg_stat_database"}, {"label": "\u5b57\u6bb5", "value": "blk_read_time"}, {"label": "SQL \u7c7b\u578b", "value": "double precision"}, {"label": "\u5b57\u6bb5\u5b9a\u4e49\u8bb0\u8f7d\u7684\u5355\u4f4d", "value": "blocks, milliseconds"}, {"label": "\u91cd\u7f6e\u6761\u4ef6", "value": "\u8fd9\u4e9b\u7edf\u8ba1\u4e0a\u6b21\u91cd\u7f6e\u7684\u65f6\u95f4"}], "sections": [{"title": "\u89c6\u56fe\u8bed\u4e49", "paragraphs": ["pg_stat_database \u89c6\u56fe\u5c06\u5305\u542b\u4e00\u884c\u7528\u4e8e\u96c6\u7c07\u4e2d\u7684\u6bcf\u4e2a\u6570\u636e\u5e93\uff0c\u52a0\u4e00\u884c\u7528\u4e8e\u5171\u4eab\u5bf9\u8c61\uff0c\u663e\u793a\u6570\u636e\u5e93\u8303\u56f4\u7684\u7edf\u8ba1\u4fe1\u606f\u3002"]}, {"title": "\u91c7\u96c6\u4e0e\u91cd\u7f6e\u8bed\u4e49", "paragraphs": ["\u91cd\u7f6e\u8303\u56f4\u548c\u53ef\u89c1\u6027\u8bf7\u53c2\u9605\u4e0b\u65b9\u540c\u7248\u672c\u7684\u7edf\u8ba1\u4fe1\u606f\u6536\u96c6\u4e0e\u89c6\u56fe\u6587\u6863\u3002\u4e0d\u6839\u636e\u5b57\u6bb5\u540d\u79f0\u63a8\u65ad\u5404\u5b57\u6bb5\u7684\u91cd\u7f6e\u89c4\u5219\u3002"]}, {"code": "SELECT blk_read_time FROM pg_catalog.pg_stat_database;", "title": "\u67e5\u770b\u6b64\u5b57\u6bb5", "paragraphs": ["\u793a\u4f8b\u67e5\u8be2\uff1b\u4e0d\u8868\u793a\u5df2\u6267\u884c\uff0c\u4e5f\u4e0d\u63d0\u4f9b\u5b9e\u6d4b\u503c\u3002"]}], "sql_type": "double precision", "center_zh": {"title": "pg_stat_database.blk_read_time", "locale": "zh-Hans", "source": {"key": "pg_stat_database-blk_read_time", "locale": "zh-Hans", "version": "15", "text_hash": "126ed59685d470599d1fe96a5e675140f1152a87ae32e4bbbda4b1fe662c198b", "collection": "metric", "dataset_hash": "7c31b524dfe136022d39a6ae8dcfac6b3bbd5f8fdaf422536599981252aff0c9", "source_database": "center", "source_revision": "e1a64a87a46b825b88c082e4518161a47aab53c45694964f8ba1df28f7859f89"}, "payload": {"facts": [{"label": "\u89c6\u56fe", "value": "pg_stat_database"}, {"label": "\u5b57\u6bb5", "value": "blk_read_time"}, {"label": "SQL \u7c7b\u578b", "value": "double precision"}, {"label": "\u5b57\u6bb5\u5b9a\u4e49\u8bb0\u8f7d\u7684\u5355\u4f4d", "value": "blocks, milliseconds"}, {"label": "\u91cd\u7f6e\u6761\u4ef6", "value": "\u8fd9\u4e9b\u7edf\u8ba1\u4e0a\u6b21\u91cd\u7f6e\u7684\u65f6\u95f4"}], "tables": [], "zh_from": {"kind": "same-version-chinese-manual-with-source-derived-structured-summary", "manual": {"url": "/zh/docs/15/monitoring-stats.html#", "anchor": "", "column": "blk_read_time", "locale": "zh-Hans", "version": "15", "build_id": 101, "page_key": "monitoring-stats.html", "extraction": "exact-catalog-field", "source_hash": "a1f491ce4744d3b72b0eced7fad7c91762a4a8ba5ce0d61094b0616668450592", "source_revision": "unknown:rendered-translation-baseline", "translation_revision": "git:b1b500221dbe5437cfca004d6b04d3f6e422765d;html-sha256:6bce1a2df9170cb1146a1411c5547190856638221a6539e618ee1016c9f493ad"}, "body_sha256": "82a07dae9013df67292a117e8107957b14ef32da393d8e5ba9a23b0c7e889895", "runtime_rerun": false, "authored_translation": "source-derived-structured-summary", "source_facts_revision": "e1a64a87a46b825b88c082e4518161a47aab53c45694964f8ba1df28f7859f89"}, "sections": [{"title": "\u89c6\u56fe\u8bed\u4e49", "paragraphs": ["pg_stat_database \u89c6\u56fe\u5c06\u5305\u542b\u4e00\u884c\u7528\u4e8e\u96c6\u7c07\u4e2d\u7684\u6bcf\u4e2a\u6570\u636e\u5e93\uff0c\u52a0\u4e00\u884c\u7528\u4e8e\u5171\u4eab\u5bf9\u8c61\uff0c\u663e\u793a\u6570\u636e\u5e93\u8303\u56f4\u7684\u7edf\u8ba1\u4fe1\u606f\u3002"]}, {"title": "\u91c7\u96c6\u4e0e\u91cd\u7f6e\u8bed\u4e49", "paragraphs": ["\u91cd\u7f6e\u8303\u56f4\u548c\u53ef\u89c1\u6027\u8bf7\u53c2\u9605\u4e0b\u65b9\u540c\u7248\u672c\u7684\u7edf\u8ba1\u4fe1\u606f\u6536\u96c6\u4e0e\u89c6\u56fe\u6587\u6863\u3002\u4e0d\u6839\u636e\u5b57\u6bb5\u540d\u79f0\u63a8\u65ad\u5404\u5b57\u6bb5\u7684\u91cd\u7f6e\u89c4\u5219\u3002"]}, {"code": "SELECT blk_read_time FROM pg_catalog.pg_stat_database;", "title": "\u67e5\u770b\u6b64\u5b57\u6bb5", "paragraphs": ["\u793a\u4f8b\u67e5\u8be2\uff1b\u4e0d\u8868\u793a\u5df2\u6267\u884c\uff0c\u4e5f\u4e0d\u63d0\u4f9b\u5b9e\u6d4b\u503c\u3002"]}], "description_zh": "\u5728\u8fd9\u4e2a\u6570\u636e\u5e93\u4e2d\u901a\u8fc7\u540e\u7aef\u8bfb\u53d6\u6570\u636e\u6587\u4ef6\u5757\u6240\u82b1\u8d39\u7684\u65f6\u95f4\uff0c\u4ee5\u6beb\u79d2\u4e3a\u5355\u4f4d\uff08\u5982\u679c\u542f\u7528\u4e86 track_io_timing\uff0c\u5426\u5219\u4e3a\u96f6\uff09", "description_zh_html": "<p>pg_stat_database.blk_read_time \u7edf\u8ba1\u5b57\u6bb5\u3002</p><dl><dt>\u89c6\u56fe</dt><dd><code>pg_stat_database</code></dd><dt>\u5b57\u6bb5</dt><dd><code>blk_read_time</code></dd><dt>SQL \u7c7b\u578b</dt><dd><code>double precision</code></dd></dl><h3>\u540c\u7248\u672c\u4e2d\u6587\u624b\u518c\u5b9a\u4e49</h3><p>\u5728\u8fd9\u4e2a\u6570\u636e\u5e93\u4e2d\u901a\u8fc7\u540e\u7aef\u8bfb\u53d6\u6570\u636e\u6587\u4ef6\u5757\u6240\u82b1\u8d39\u7684\u65f6\u95f4\uff0c\u4ee5\u6beb\u79d2\u4e3a\u5355\u4f4d\uff08\u5982\u679c\u542f\u7528\u4e86 track_io_timing\uff0c\u5426\u5219\u4e3a\u96f6\uff09</p><p><a href=\"/zh/docs/15/monitoring-stats.html#\">\u67e5\u770b\u5b8c\u6574\u4e2d\u6587\u624b\u518c\u4e0e\u4e0a\u4e0b\u6587</a>\u3002</p>"}, "summary": "\u5728\u8fd9\u4e2a\u6570\u636e\u5e93\u4e2d\u901a\u8fc7\u540e\u7aef\u8bfb\u53d6\u6570\u636e\u6587\u4ef6\u5757\u6240\u82b1\u8d39\u7684\u65f6\u95f4\uff0c\u4ee5\u6beb\u79d2\u4e3a\u5355\u4f4d\uff08\u5982\u679c\u542f\u7528\u4e86 track_io_timing\uff0c\u5426\u5219\u4e3a\u96f6\uff09", "version": "15", "link_map": {"/zh/docs/15/monitoring-stats.html": "/docs/15/monitoring-stats.html"}, "body_html": "<p>pg_stat_database.blk_read_time \u7edf\u8ba1\u5b57\u6bb5\u3002</p><dl><dt>\u89c6\u56fe</dt><dd><code>pg_stat_database</code></dd><dt>\u5b57\u6bb5</dt><dd><code>blk_read_time</code></dd><dt>SQL \u7c7b\u578b</dt><dd><code>double precision</code></dd></dl><h3>\u540c\u7248\u672c\u4e2d\u6587\u624b\u518c\u5b9a\u4e49</h3><p>\u5728\u8fd9\u4e2a\u6570\u636e\u5e93\u4e2d\u901a\u8fc7\u540e\u7aef\u8bfb\u53d6\u6570\u636e\u6587\u4ef6\u5757\u6240\u82b1\u8d39\u7684\u65f6\u95f4\uff0c\u4ee5\u6beb\u79d2\u4e3a\u5355\u4f4d\uff08\u5982\u679c\u542f\u7528\u4e86 track_io_timing\uff0c\u5426\u5219\u4e3a\u96f6\uff09</p><p><a href=\"/zh/docs/15/monitoring-stats.html\" rel=\"nofollow\">\u67e5\u770b\u5b8c\u6574\u4e2d\u6587\u624b\u518c\u4e0e\u4e0a\u4e0b\u6587</a>\u3002</p>", "body_sha256": "60751e3225d48ec998748913e1ede457c3bdddfafe2b8b5f88536b3f4dede35c", "content_hash": "126ed59685d470599d1fe96a5e675140f1152a87ae32e4bbbda4b1fe662c198b", "source_database": "center", "source_revision": "e1a64a87a46b825b88c082e4518161a47aab53c45694964f8ba1df28f7859f89"}, "signature": "SELECT blk_read_time FROM pg_catalog.pg_stat_database;", "tables_zh": [], "documented": true, "description": ["\u5728\u8fd9\u4e2a\u6570\u636e\u5e93\u4e2d\u901a\u8fc7\u540e\u7aef\u8bfb\u53d6\u6570\u636e\u6587\u4ef6\u5757\u6240\u82b1\u8d39\u7684\u65f6\u95f4\uff0c\u4ee5\u6beb\u79d2\u4e3a\u5355\u4f4d\uff08\u5982\u679c\u542f\u7528\u4e86 track_io_timing\uff0c\u5426\u5219\u4e3a\u96f6\uff09"], "manual_html": "", "manual_path": "/docs/15/monitoring-stats.html", "sections_zh": [{"title": "\u89c6\u56fe\u8bed\u4e49", "paragraphs": ["pg_stat_database \u89c6\u56fe\u5c06\u5305\u542b\u4e00\u884c\u7528\u4e8e\u96c6\u7c07\u4e2d\u7684\u6bcf\u4e2a\u6570\u636e\u5e93\uff0c\u52a0\u4e00\u884c\u7528\u4e8e\u5171\u4eab\u5bf9\u8c61\uff0c\u663e\u793a\u6570\u636e\u5e93\u8303\u56f4\u7684\u7edf\u8ba1\u4fe1\u606f\u3002"]}, {"title": "\u91c7\u96c6\u4e0e\u91cd\u7f6e\u8bed\u4e49", "paragraphs": ["\u91cd\u7f6e\u8303\u56f4\u548c\u53ef\u89c1\u6027\u8bf7\u53c2\u9605\u4e0b\u65b9\u540c\u7248\u672c\u7684\u7edf\u8ba1\u4fe1\u606f\u6536\u96c6\u4e0e\u89c6\u56fe\u6587\u6863\u3002\u4e0d\u6839\u636e\u5b57\u6bb5\u540d\u79f0\u63a8\u65ad\u5404\u5b57\u6bb5\u7684\u91cd\u7f6e\u89c4\u5219\u3002"]}, {"code": "SELECT blk_read_time FROM pg_catalog.pg_stat_database;", "title": "\u67e5\u770b\u6b64\u5b57\u6bb5", "paragraphs": ["\u793a\u4f8b\u67e5\u8be2\uff1b\u4e0d\u8868\u793a\u5df2\u6267\u884c\uff0c\u4e5f\u4e0d\u63d0\u4f9b\u5b9e\u6d4b\u503c\u3002"]}], "source_only": false, "localization": {"status": "complete", "sources": [{"url": "/docs/15/monitoring-stats.html", "method": "same-major semantic node", "sha256": "373028581d43d13a3f098f997d5912fca6c8c1bf42a129d9336834c119bcaf6b", "language": "zh", "matched_nodes": ["#MONITORING-STATS/div[19]/div[3]/div[1]/table[0]/tbody[2]/tr[18]/td[0]/p[1]", "#MONITORING-STATS/div[19]/p[2]"]}], "language": "zh", "original_text": {"/versions/15/description/0": "Time spent reading data file blocks by backends in this database, in milliseconds (if track_io_timing is enabled, otherwise zero)", "/versions/15/facts/0/label": "View", "/versions/15/facts/1/label": "Field", "/versions/15/facts/2/label": "SQL type", "/versions/15/facts/3/label": "Units named in the field definition", "/versions/15/facts/4/label": "Reset observation", "/versions/15/facts/4/value": "Time at which these statistics were last reset", "/versions/15/related/0/label": "pg_stat_database columns", "/versions/15/related/1/label": "Statistics collection and reset functions", "/versions/15/sections/0/title": "View semantics", "/versions/15/sections/1/title": "Collection and reset context", "/versions/15/sections/2/title": "Inspect this field", "/versions/15/sections/0/paragraphs/0": "The pg_stat_database view will contain one row for each database in the cluster, plus one for shared objects, showing database-wide statistics.", "/versions/15/sections/1/paragraphs/0": "Read the same-version statistics collection and view documentation below for reset scope and visibility. No per-field reset rule is inferred from the field name.", "/versions/15/sections/2/paragraphs/0": "Example query; no execution result or measured value is asserted."}, "fallback_fields": [], "source_language": "en", "original_snapshot_sha256": "6cd011ecdd72831ac3a0fc733e4b5e09fd1a6358bca242bcd5a6066282768cd8", "canonical_center_text_hash": "126ed59685d470599d1fe96a5e675140f1152a87ae32e4bbbda4b1fe662c198b"}, "description_zh": "\u5728\u8fd9\u4e2a\u6570\u636e\u5e93\u4e2d\u901a\u8fc7\u540e\u7aef\u8bfb\u53d6\u6570\u636e\u6587\u4ef6\u5757\u6240\u82b1\u8d39\u7684\u65f6\u95f4\uff0c\u4ee5\u6beb\u79d2\u4e3a\u5355\u4f4d\uff08\u5982\u679c\u542f\u7528\u4e86 track_io_timing\uff0c\u5426\u5219\u4e3a\u96f6\uff09", "comparison_data": {"view": "pg_stat_database", "field": "blk_read_time", "sql_type": "double precision", "units_mentioned": ["blocks", "milliseconds"]}, "comparison_hash": "c28bef2f31d56d506979b87f818489284f8c0a9025ea0ad48c4886b39bdc6456", "manual_language": "zh", "units_mentioned": ["blocks", "milliseconds"], "description_zh_html": "<p>pg_stat_database.blk_read_time \u7edf\u8ba1\u5b57\u6bb5\u3002</p><dl><dt>\u89c6\u56fe</dt><dd><code>pg_stat_database</code></dd><dt>\u5b57\u6bb5</dt><dd><code>blk_read_time</code></dd><dt>SQL \u7c7b\u578b</dt><dd><code>double precision</code></dd></dl><h3>\u540c\u7248\u672c\u4e2d\u6587\u624b\u518c\u5b9a\u4e49</h3><p>\u5728\u8fd9\u4e2a\u6570\u636e\u5e93\u4e2d\u901a\u8fc7\u540e\u7aef\u8bfb\u53d6\u6570\u636e\u6587\u4ef6\u5757\u6240\u82b1\u8d39\u7684\u65f6\u95f4\uff0c\u4ee5\u6beb\u79d2\u4e3a\u5355\u4f4d\uff08\u5982\u679c\u542f\u7528\u4e86 track_io_timing\uff0c\u5426\u5219\u4e3a\u96f6\uff09</p><p><a href=\"/zh/docs/15/monitoring-stats.html\" rel=\"nofollow\">\u67e5\u770b\u5b8c\u6574\u4e2d\u6587\u624b\u518c\u4e0e\u4e0a\u4e0b\u6587</a>\u3002</p>"}, "16": {"view": "pg_stat_database", "facts": [{"label": "\u89c6\u56fe", "value": "pg_stat_database"}, {"label": "\u5b57\u6bb5", "value": "blk_read_time"}, {"label": "SQL \u7c7b\u578b", "value": "double precision"}, {"label": "\u5b57\u6bb5\u5b9a\u4e49\u8bb0\u8f7d\u7684\u5355\u4f4d", "value": "blocks, milliseconds"}, {"label": "\u91cd\u7f6e\u6761\u4ef6", "value": "\u8fd9\u4e9b\u7edf\u8ba1\u4e0a\u6b21\u91cd\u7f6e\u7684\u65f6\u95f4"}], "field": "blk_read_time", "tables": [], "related": [{"url": "/wiki/catalog/pg_stat_database/?v=16", "label": "pg_stat_database \u5b57\u6bb5"}, {"url": "/docs/16/monitoring-stats.html", "label": "\u7edf\u8ba1\u6536\u96c6\u4e0e\u91cd\u7f6e\u51fd\u6570"}], "release": {"ref": "https://ftp.postgresql.org/pub/source/v16.15/postgresql-16.15.tar.bz2", "label": "16.15", "major": "16", "channel": "stable", "revision": "c1575341fa7bd40f5274ea465b34390f4dc64cdd0770af327005caaeb9f6b7ed"}, "sources": [{"url": "/docs/16/monitoring-stats.html#PG-STAT-DATABASE-VIEW", "path": "monitoring-stats.html", "label": "PostgreSQL 16 English manual", "sha256": "a4c274defe8a41ff2895040cd542b5499063b844669ff3336de1a1317c3fe086"}], "zh_from": {"kind": "same-version-chinese-manual-with-source-derived-structured-summary", "manual": {"url": "/zh/docs/16/monitoring-stats.html#", "anchor": "", "column": "blk_read_time", "locale": "zh-Hans", "version": "16", "build_id": 103, "page_key": "monitoring-stats.html", "extraction": "exact-catalog-field", "source_hash": "bc7073c776c27e13a8c84203c68f4913e8ee7601c38364f2b4e397c4851c8e08", "source_revision": "unknown:rendered-translation-baseline", "translation_revision": "git:b1b500221dbe5437cfca004d6b04d3f6e422765d;html-sha256:80579a071736780f9c4022bb5148e1fb1256f1a33591306af67816e9e9bf3a9b"}, "body_sha256": "6141fbea576bffbd245a628591ace3dce50c9aa4218b9e7b231fa6a379cb3f49", "runtime_rerun": false, "authored_translation": "source-derived-structured-summary", "source_facts_revision": "c1575341fa7bd40f5274ea465b34390f4dc64cdd0770af327005caaeb9f6b7ed"}, "facts_zh": [{"label": "\u89c6\u56fe", "value": "pg_stat_database"}, {"label": "\u5b57\u6bb5", "value": "blk_read_time"}, {"label": "SQL \u7c7b\u578b", "value": "double precision"}, {"label": "\u5b57\u6bb5\u5b9a\u4e49\u8bb0\u8f7d\u7684\u5355\u4f4d", "value": "blocks, milliseconds"}, {"label": "\u91cd\u7f6e\u6761\u4ef6", "value": "\u8fd9\u4e9b\u7edf\u8ba1\u4e0a\u6b21\u91cd\u7f6e\u7684\u65f6\u95f4"}], "sections": [{"title": "\u89c6\u56fe\u8bed\u4e49", "paragraphs": ["pg_stat_database \u89c6\u56fe\u5c06\u5305\u542b\u4e00\u884c\u7528\u4e8e\u96c6\u7c07\u4e2d\u7684\u6bcf\u4e2a\u6570\u636e\u5e93\uff0c\u52a0\u4e00\u884c\u7528\u4e8e\u5171\u4eab\u5bf9\u8c61\uff0c\u663e\u793a\u6570\u636e\u5e93\u8303\u56f4\u7684\u7edf\u8ba1\u4fe1\u606f\u3002"]}, {"title": "\u91c7\u96c6\u4e0e\u91cd\u7f6e\u8bed\u4e49", "paragraphs": ["\u91cd\u7f6e\u8303\u56f4\u548c\u53ef\u89c1\u6027\u8bf7\u53c2\u9605\u4e0b\u65b9\u540c\u7248\u672c\u7684\u7edf\u8ba1\u4fe1\u606f\u6536\u96c6\u4e0e\u89c6\u56fe\u6587\u6863\u3002\u4e0d\u6839\u636e\u5b57\u6bb5\u540d\u79f0\u63a8\u65ad\u5404\u5b57\u6bb5\u7684\u91cd\u7f6e\u89c4\u5219\u3002"]}, {"code": "SELECT blk_read_time FROM pg_catalog.pg_stat_database;", "title": "\u67e5\u770b\u6b64\u5b57\u6bb5", "paragraphs": ["\u793a\u4f8b\u67e5\u8be2\uff1b\u4e0d\u8868\u793a\u5df2\u6267\u884c\uff0c\u4e5f\u4e0d\u63d0\u4f9b\u5b9e\u6d4b\u503c\u3002"]}], "sql_type": "double precision", "center_zh": {"title": "pg_stat_database.blk_read_time", "locale": "zh-Hans", "source": {"key": "pg_stat_database-blk_read_time", "locale": "zh-Hans", "version": "16", "text_hash": "54f781a18cc356142a8bc07d4302e484f41d06aa17fc9d5b8a179a8d4d582b24", "collection": "metric", "dataset_hash": "7c31b524dfe136022d39a6ae8dcfac6b3bbd5f8fdaf422536599981252aff0c9", "source_database": "center", "source_revision": "c1575341fa7bd40f5274ea465b34390f4dc64cdd0770af327005caaeb9f6b7ed"}, "payload": {"facts": [{"label": "\u89c6\u56fe", "value": "pg_stat_database"}, {"label": "\u5b57\u6bb5", "value": "blk_read_time"}, {"label": "SQL \u7c7b\u578b", "value": "double precision"}, {"label": "\u5b57\u6bb5\u5b9a\u4e49\u8bb0\u8f7d\u7684\u5355\u4f4d", "value": "blocks, milliseconds"}, {"label": "\u91cd\u7f6e\u6761\u4ef6", "value": "\u8fd9\u4e9b\u7edf\u8ba1\u4e0a\u6b21\u91cd\u7f6e\u7684\u65f6\u95f4"}], "tables": [], "zh_from": {"kind": "same-version-chinese-manual-with-source-derived-structured-summary", "manual": {"url": "/zh/docs/16/monitoring-stats.html#", "anchor": "", "column": "blk_read_time", "locale": "zh-Hans", "version": "16", "build_id": 103, "page_key": "monitoring-stats.html", "extraction": "exact-catalog-field", "source_hash": "bc7073c776c27e13a8c84203c68f4913e8ee7601c38364f2b4e397c4851c8e08", "source_revision": "unknown:rendered-translation-baseline", "translation_revision": "git:b1b500221dbe5437cfca004d6b04d3f6e422765d;html-sha256:80579a071736780f9c4022bb5148e1fb1256f1a33591306af67816e9e9bf3a9b"}, "body_sha256": "6141fbea576bffbd245a628591ace3dce50c9aa4218b9e7b231fa6a379cb3f49", "runtime_rerun": false, "authored_translation": "source-derived-structured-summary", "source_facts_revision": "c1575341fa7bd40f5274ea465b34390f4dc64cdd0770af327005caaeb9f6b7ed"}, "sections": [{"title": "\u89c6\u56fe\u8bed\u4e49", "paragraphs": ["pg_stat_database \u89c6\u56fe\u5c06\u5305\u542b\u4e00\u884c\u7528\u4e8e\u96c6\u7c07\u4e2d\u7684\u6bcf\u4e2a\u6570\u636e\u5e93\uff0c\u52a0\u4e00\u884c\u7528\u4e8e\u5171\u4eab\u5bf9\u8c61\uff0c\u663e\u793a\u6570\u636e\u5e93\u8303\u56f4\u7684\u7edf\u8ba1\u4fe1\u606f\u3002"]}, {"title": "\u91c7\u96c6\u4e0e\u91cd\u7f6e\u8bed\u4e49", "paragraphs": ["\u91cd\u7f6e\u8303\u56f4\u548c\u53ef\u89c1\u6027\u8bf7\u53c2\u9605\u4e0b\u65b9\u540c\u7248\u672c\u7684\u7edf\u8ba1\u4fe1\u606f\u6536\u96c6\u4e0e\u89c6\u56fe\u6587\u6863\u3002\u4e0d\u6839\u636e\u5b57\u6bb5\u540d\u79f0\u63a8\u65ad\u5404\u5b57\u6bb5\u7684\u91cd\u7f6e\u89c4\u5219\u3002"]}, {"code": "SELECT blk_read_time FROM pg_catalog.pg_stat_database;", "title": "\u67e5\u770b\u6b64\u5b57\u6bb5", "paragraphs": ["\u793a\u4f8b\u67e5\u8be2\uff1b\u4e0d\u8868\u793a\u5df2\u6267\u884c\uff0c\u4e5f\u4e0d\u63d0\u4f9b\u5b9e\u6d4b\u503c\u3002"]}], "description_zh": "\u5728\u8fd9\u4e2a\u6570\u636e\u5e93\u4e2d\u901a\u8fc7\u540e\u7aef\u8bfb\u53d6\u6570\u636e\u6587\u4ef6\u5757\u6240\u82b1\u8d39\u7684\u65f6\u95f4\uff0c\u4ee5\u6beb\u79d2\u4e3a\u5355\u4f4d\uff08\u5982\u679c\u542f\u7528\u4e86 track_io_timing\uff0c\u5426\u5219\u4e3a\u96f6\uff09", "description_zh_html": "<p>pg_stat_database.blk_read_time \u7edf\u8ba1\u5b57\u6bb5\u3002</p><dl><dt>\u89c6\u56fe</dt><dd><code>pg_stat_database</code></dd><dt>\u5b57\u6bb5</dt><dd><code>blk_read_time</code></dd><dt>SQL \u7c7b\u578b</dt><dd><code>double precision</code></dd></dl><h3>\u540c\u7248\u672c\u4e2d\u6587\u624b\u518c\u5b9a\u4e49</h3><p>\u5728\u8fd9\u4e2a\u6570\u636e\u5e93\u4e2d\u901a\u8fc7\u540e\u7aef\u8bfb\u53d6\u6570\u636e\u6587\u4ef6\u5757\u6240\u82b1\u8d39\u7684\u65f6\u95f4\uff0c\u4ee5\u6beb\u79d2\u4e3a\u5355\u4f4d\uff08\u5982\u679c\u542f\u7528\u4e86 track_io_timing\uff0c\u5426\u5219\u4e3a\u96f6\uff09</p><p><a href=\"/zh/docs/16/monitoring-stats.html#\">\u67e5\u770b\u5b8c\u6574\u4e2d\u6587\u624b\u518c\u4e0e\u4e0a\u4e0b\u6587</a>\u3002</p>"}, "summary": "\u5728\u8fd9\u4e2a\u6570\u636e\u5e93\u4e2d\u901a\u8fc7\u540e\u7aef\u8bfb\u53d6\u6570\u636e\u6587\u4ef6\u5757\u6240\u82b1\u8d39\u7684\u65f6\u95f4\uff0c\u4ee5\u6beb\u79d2\u4e3a\u5355\u4f4d\uff08\u5982\u679c\u542f\u7528\u4e86 track_io_timing\uff0c\u5426\u5219\u4e3a\u96f6\uff09", "version": "16", "link_map": {"/zh/docs/16/monitoring-stats.html": "/docs/16/monitoring-stats.html"}, "body_html": "<p>pg_stat_database.blk_read_time \u7edf\u8ba1\u5b57\u6bb5\u3002</p><dl><dt>\u89c6\u56fe</dt><dd><code>pg_stat_database</code></dd><dt>\u5b57\u6bb5</dt><dd><code>blk_read_time</code></dd><dt>SQL \u7c7b\u578b</dt><dd><code>double precision</code></dd></dl><h3>\u540c\u7248\u672c\u4e2d\u6587\u624b\u518c\u5b9a\u4e49</h3><p>\u5728\u8fd9\u4e2a\u6570\u636e\u5e93\u4e2d\u901a\u8fc7\u540e\u7aef\u8bfb\u53d6\u6570\u636e\u6587\u4ef6\u5757\u6240\u82b1\u8d39\u7684\u65f6\u95f4\uff0c\u4ee5\u6beb\u79d2\u4e3a\u5355\u4f4d\uff08\u5982\u679c\u542f\u7528\u4e86 track_io_timing\uff0c\u5426\u5219\u4e3a\u96f6\uff09</p><p><a href=\"/zh/docs/16/monitoring-stats.html\" rel=\"nofollow\">\u67e5\u770b\u5b8c\u6574\u4e2d\u6587\u624b\u518c\u4e0e\u4e0a\u4e0b\u6587</a>\u3002</p>", "body_sha256": "0e6b290f255c81a72778ee4726c552a171435c58d7647dc6183f2618d97cd7ae", "content_hash": "54f781a18cc356142a8bc07d4302e484f41d06aa17fc9d5b8a179a8d4d582b24", "source_database": "center", "source_revision": "c1575341fa7bd40f5274ea465b34390f4dc64cdd0770af327005caaeb9f6b7ed"}, "signature": "SELECT blk_read_time FROM pg_catalog.pg_stat_database;", "tables_zh": [], "documented": true, "description": ["\u5728\u8fd9\u4e2a\u6570\u636e\u5e93\u4e2d\u901a\u8fc7\u540e\u7aef\u8bfb\u53d6\u6570\u636e\u6587\u4ef6\u5757\u6240\u82b1\u8d39\u7684\u65f6\u95f4\uff0c\u4ee5\u6beb\u79d2\u4e3a\u5355\u4f4d\uff08\u5982\u679c\u542f\u7528\u4e86 track_io_timing\uff0c\u5426\u5219\u4e3a\u96f6\uff09"], "manual_html": "", "manual_path": "/docs/16/monitoring-stats.html", "sections_zh": [{"title": "\u89c6\u56fe\u8bed\u4e49", "paragraphs": ["pg_stat_database \u89c6\u56fe\u5c06\u5305\u542b\u4e00\u884c\u7528\u4e8e\u96c6\u7c07\u4e2d\u7684\u6bcf\u4e2a\u6570\u636e\u5e93\uff0c\u52a0\u4e00\u884c\u7528\u4e8e\u5171\u4eab\u5bf9\u8c61\uff0c\u663e\u793a\u6570\u636e\u5e93\u8303\u56f4\u7684\u7edf\u8ba1\u4fe1\u606f\u3002"]}, {"title": "\u91c7\u96c6\u4e0e\u91cd\u7f6e\u8bed\u4e49", "paragraphs": ["\u91cd\u7f6e\u8303\u56f4\u548c\u53ef\u89c1\u6027\u8bf7\u53c2\u9605\u4e0b\u65b9\u540c\u7248\u672c\u7684\u7edf\u8ba1\u4fe1\u606f\u6536\u96c6\u4e0e\u89c6\u56fe\u6587\u6863\u3002\u4e0d\u6839\u636e\u5b57\u6bb5\u540d\u79f0\u63a8\u65ad\u5404\u5b57\u6bb5\u7684\u91cd\u7f6e\u89c4\u5219\u3002"]}, {"code": "SELECT blk_read_time FROM pg_catalog.pg_stat_database;", "title": "\u67e5\u770b\u6b64\u5b57\u6bb5", "paragraphs": ["\u793a\u4f8b\u67e5\u8be2\uff1b\u4e0d\u8868\u793a\u5df2\u6267\u884c\uff0c\u4e5f\u4e0d\u63d0\u4f9b\u5b9e\u6d4b\u503c\u3002"]}], "source_only": false, "localization": {"status": "complete", "sources": [{"url": "/docs/16/monitoring-stats.html", "method": "same-major semantic node", "sha256": "602e708943074767e7aad252e93938422e388dae22bd99fc583e93f7689395ba", "language": "zh", "matched_nodes": ["#MONITORING-STATS/div[20]/div[3]/div[1]/table[0]/tbody[2]/tr[18]/td[0]/p[1]", "#MONITORING-STATS/div[20]/p[2]"]}], "language": "zh", "original_text": {"/versions/16/description/0": "Time spent reading data file blocks by backends in this database, in milliseconds (if track_io_timing is enabled, otherwise zero)", "/versions/16/facts/0/label": "View", "/versions/16/facts/1/label": "Field", "/versions/16/facts/2/label": "SQL type", "/versions/16/facts/3/label": "Units named in the field definition", "/versions/16/facts/4/label": "Reset observation", "/versions/16/facts/4/value": "Time at which these statistics were last reset", "/versions/16/related/0/label": "pg_stat_database columns", "/versions/16/related/1/label": "Statistics collection and reset functions", "/versions/16/sections/0/title": "View semantics", "/versions/16/sections/1/title": "Collection and reset context", "/versions/16/sections/2/title": "Inspect this field", "/versions/16/sections/0/paragraphs/0": "The pg_stat_database view will contain one row for each database in the cluster, plus one for shared objects, showing database-wide statistics.", "/versions/16/sections/1/paragraphs/0": "Read the same-version statistics collection and view documentation below for reset scope and visibility. No per-field reset rule is inferred from the field name.", "/versions/16/sections/2/paragraphs/0": "Example query; no execution result or measured value is asserted."}, "fallback_fields": [], "source_language": "en", "original_snapshot_sha256": "9895b02fd711189d132dfff45c08d0b4577f5b01ad979a518337d70956b4280c", "canonical_center_text_hash": "54f781a18cc356142a8bc07d4302e484f41d06aa17fc9d5b8a179a8d4d582b24"}, "description_zh": "\u5728\u8fd9\u4e2a\u6570\u636e\u5e93\u4e2d\u901a\u8fc7\u540e\u7aef\u8bfb\u53d6\u6570\u636e\u6587\u4ef6\u5757\u6240\u82b1\u8d39\u7684\u65f6\u95f4\uff0c\u4ee5\u6beb\u79d2\u4e3a\u5355\u4f4d\uff08\u5982\u679c\u542f\u7528\u4e86 track_io_timing\uff0c\u5426\u5219\u4e3a\u96f6\uff09", "comparison_data": {"view": "pg_stat_database", "field": "blk_read_time", "sql_type": "double precision", "units_mentioned": ["blocks", "milliseconds"]}, "comparison_hash": "c28bef2f31d56d506979b87f818489284f8c0a9025ea0ad48c4886b39bdc6456", "manual_language": "zh", "units_mentioned": ["blocks", "milliseconds"], "description_zh_html": "<p>pg_stat_database.blk_read_time \u7edf\u8ba1\u5b57\u6bb5\u3002</p><dl><dt>\u89c6\u56fe</dt><dd><code>pg_stat_database</code></dd><dt>\u5b57\u6bb5</dt><dd><code>blk_read_time</code></dd><dt>SQL \u7c7b\u578b</dt><dd><code>double precision</code></dd></dl><h3>\u540c\u7248\u672c\u4e2d\u6587\u624b\u518c\u5b9a\u4e49</h3><p>\u5728\u8fd9\u4e2a\u6570\u636e\u5e93\u4e2d\u901a\u8fc7\u540e\u7aef\u8bfb\u53d6\u6570\u636e\u6587\u4ef6\u5757\u6240\u82b1\u8d39\u7684\u65f6\u95f4\uff0c\u4ee5\u6beb\u79d2\u4e3a\u5355\u4f4d\uff08\u5982\u679c\u542f\u7528\u4e86 track_io_timing\uff0c\u5426\u5219\u4e3a\u96f6\uff09</p><p><a href=\"/zh/docs/16/monitoring-stats.html\" rel=\"nofollow\">\u67e5\u770b\u5b8c\u6574\u4e2d\u6587\u624b\u518c\u4e0e\u4e0a\u4e0b\u6587</a>\u3002</p>"}, "17": {"view": "pg_stat_database", "facts": [{"label": "\u89c6\u56fe", "value": "pg_stat_database"}, {"label": "\u5b57\u6bb5", "value": "blk_read_time"}, {"label": "SQL \u7c7b\u578b", "value": "double precision"}, {"label": "\u5b57\u6bb5\u5b9a\u4e49\u8bb0\u8f7d\u7684\u5355\u4f4d", "value": "blocks, milliseconds"}, {"label": "\u91cd\u7f6e\u6761\u4ef6", "value": "\u8fd9\u4e9b\u7edf\u8ba1\u4e0a\u6b21\u91cd\u7f6e\u7684\u65f6\u95f4"}], "field": "blk_read_time", "tables": [], "related": [{"url": "/wiki/catalog/pg_stat_database/?v=17", "label": "pg_stat_database \u5b57\u6bb5"}, {"url": "/docs/17/monitoring-stats.html", "label": "\u7edf\u8ba1\u6536\u96c6\u4e0e\u91cd\u7f6e\u51fd\u6570"}], "release": {"ref": "https://ftp.postgresql.org/pub/source/v17.11/postgresql-17.11.tar.bz2", "label": "17.11", "major": "17", "channel": "stable", "revision": "dd27f2b3c59e73ed14aa3324901242bf69a032a6347805f274e6260322d42979"}, "sources": [{"url": "/docs/17/monitoring-stats.html#PG-STAT-DATABASE-VIEW", "path": "monitoring-stats.html", "label": "PostgreSQL 17 English manual", "sha256": "007af6e8ab39b925963273ec3ba7f06f8ee6fbfaad821f07a1dc78383dbb9b99"}], "zh_from": {"kind": "same-version-chinese-manual-with-source-derived-structured-summary", "manual": {"url": "/zh/docs/17/monitoring-stats.html#", "anchor": "", "column": "blk_read_time", "locale": "zh-Hans", "version": "17", "build_id": 105, "page_key": "monitoring-stats.html", "extraction": "exact-catalog-field", "source_hash": "ad63a74417862b28cba663bd779186633505e5da37845bce5f2e4bf62ee55c2b", "source_revision": "unknown:rendered-translation-baseline", "translation_revision": "git:b1b500221dbe5437cfca004d6b04d3f6e422765d;html-sha256:7340767258d21c21b36f373f1fff6bab2be18e0daca13a865129db6105c09efd"}, "body_sha256": "301ff61cc1997eda05056a563543ec20310c4b21558b030eab470289dae8c101", "runtime_rerun": false, "authored_translation": "source-derived-structured-summary", "source_facts_revision": "dd27f2b3c59e73ed14aa3324901242bf69a032a6347805f274e6260322d42979"}, "facts_zh": [{"label": "\u89c6\u56fe", "value": "pg_stat_database"}, {"label": "\u5b57\u6bb5", "value": "blk_read_time"}, {"label": "SQL \u7c7b\u578b", "value": "double precision"}, {"label": "\u5b57\u6bb5\u5b9a\u4e49\u8bb0\u8f7d\u7684\u5355\u4f4d", "value": "blocks, milliseconds"}, {"label": "\u91cd\u7f6e\u6761\u4ef6", "value": "\u8fd9\u4e9b\u7edf\u8ba1\u4e0a\u6b21\u91cd\u7f6e\u7684\u65f6\u95f4"}], "sections": [{"title": "\u89c6\u56fe\u8bed\u4e49", "paragraphs": ["pg_stat_database \u89c6\u56fe\u5c06\u5305\u542b\u4e00\u884c\u7528\u4e8e\u96c6\u7c07\u4e2d\u7684\u6bcf\u4e2a\u6570\u636e\u5e93\uff0c\u52a0\u4e00\u884c\u7528\u4e8e\u5171\u4eab\u5bf9\u8c61\uff0c\u663e\u793a\u6570\u636e\u5e93\u8303\u56f4\u7684\u7edf\u8ba1\u4fe1\u606f\u3002"]}, {"title": "\u91c7\u96c6\u4e0e\u91cd\u7f6e\u8bed\u4e49", "paragraphs": ["\u91cd\u7f6e\u8303\u56f4\u548c\u53ef\u89c1\u6027\u8bf7\u53c2\u9605\u4e0b\u65b9\u540c\u7248\u672c\u7684\u7edf\u8ba1\u4fe1\u606f\u6536\u96c6\u4e0e\u89c6\u56fe\u6587\u6863\u3002\u4e0d\u6839\u636e\u5b57\u6bb5\u540d\u79f0\u63a8\u65ad\u5404\u5b57\u6bb5\u7684\u91cd\u7f6e\u89c4\u5219\u3002"]}, {"code": "SELECT blk_read_time FROM pg_catalog.pg_stat_database;", "title": "\u67e5\u770b\u6b64\u5b57\u6bb5", "paragraphs": ["\u793a\u4f8b\u67e5\u8be2\uff1b\u4e0d\u8868\u793a\u5df2\u6267\u884c\uff0c\u4e5f\u4e0d\u63d0\u4f9b\u5b9e\u6d4b\u503c\u3002"]}], "sql_type": "double precision", "center_zh": {"title": "pg_stat_database.blk_read_time", "locale": "zh-Hans", "source": {"key": "pg_stat_database-blk_read_time", "locale": "zh-Hans", "version": "17", "text_hash": "259c9b82ddec1d2fdf71a6bb6fb7ed918d5c38ffcb06cb066417397e6b56f634", "collection": "metric", "dataset_hash": "7c31b524dfe136022d39a6ae8dcfac6b3bbd5f8fdaf422536599981252aff0c9", "source_database": "center", "source_revision": "dd27f2b3c59e73ed14aa3324901242bf69a032a6347805f274e6260322d42979"}, "payload": {"facts": [{"label": "\u89c6\u56fe", "value": "pg_stat_database"}, {"label": "\u5b57\u6bb5", "value": "blk_read_time"}, {"label": "SQL \u7c7b\u578b", "value": "double precision"}, {"label": "\u5b57\u6bb5\u5b9a\u4e49\u8bb0\u8f7d\u7684\u5355\u4f4d", "value": "blocks, milliseconds"}, {"label": "\u91cd\u7f6e\u6761\u4ef6", "value": "\u8fd9\u4e9b\u7edf\u8ba1\u4e0a\u6b21\u91cd\u7f6e\u7684\u65f6\u95f4"}], "tables": [], "zh_from": {"kind": "same-version-chinese-manual-with-source-derived-structured-summary", "manual": {"url": "/zh/docs/17/monitoring-stats.html#", "anchor": "", "column": "blk_read_time", "locale": "zh-Hans", "version": "17", "build_id": 105, "page_key": "monitoring-stats.html", "extraction": "exact-catalog-field", "source_hash": "ad63a74417862b28cba663bd779186633505e5da37845bce5f2e4bf62ee55c2b", "source_revision": "unknown:rendered-translation-baseline", "translation_revision": "git:b1b500221dbe5437cfca004d6b04d3f6e422765d;html-sha256:7340767258d21c21b36f373f1fff6bab2be18e0daca13a865129db6105c09efd"}, "body_sha256": "301ff61cc1997eda05056a563543ec20310c4b21558b030eab470289dae8c101", "runtime_rerun": false, "authored_translation": "source-derived-structured-summary", "source_facts_revision": "dd27f2b3c59e73ed14aa3324901242bf69a032a6347805f274e6260322d42979"}, "sections": [{"title": "\u89c6\u56fe\u8bed\u4e49", "paragraphs": ["pg_stat_database \u89c6\u56fe\u5c06\u5305\u542b\u4e00\u884c\u7528\u4e8e\u96c6\u7c07\u4e2d\u7684\u6bcf\u4e2a\u6570\u636e\u5e93\uff0c\u52a0\u4e00\u884c\u7528\u4e8e\u5171\u4eab\u5bf9\u8c61\uff0c\u663e\u793a\u6570\u636e\u5e93\u8303\u56f4\u7684\u7edf\u8ba1\u4fe1\u606f\u3002"]}, {"title": "\u91c7\u96c6\u4e0e\u91cd\u7f6e\u8bed\u4e49", "paragraphs": ["\u91cd\u7f6e\u8303\u56f4\u548c\u53ef\u89c1\u6027\u8bf7\u53c2\u9605\u4e0b\u65b9\u540c\u7248\u672c\u7684\u7edf\u8ba1\u4fe1\u606f\u6536\u96c6\u4e0e\u89c6\u56fe\u6587\u6863\u3002\u4e0d\u6839\u636e\u5b57\u6bb5\u540d\u79f0\u63a8\u65ad\u5404\u5b57\u6bb5\u7684\u91cd\u7f6e\u89c4\u5219\u3002"]}, {"code": "SELECT blk_read_time FROM pg_catalog.pg_stat_database;", "title": "\u67e5\u770b\u6b64\u5b57\u6bb5", "paragraphs": ["\u793a\u4f8b\u67e5\u8be2\uff1b\u4e0d\u8868\u793a\u5df2\u6267\u884c\uff0c\u4e5f\u4e0d\u63d0\u4f9b\u5b9e\u6d4b\u503c\u3002"]}], "description_zh": "\u5728\u8fd9\u4e2a\u6570\u636e\u5e93\u4e2d\u901a\u8fc7\u540e\u7aef\u8bfb\u53d6\u6570\u636e\u6587\u4ef6\u5757\u6240\u82b1\u8d39\u7684\u65f6\u95f4\uff0c\u4ee5\u6beb\u79d2\u4e3a\u5355\u4f4d\uff08\u5982\u679c\u542f\u7528\u4e86 track_io_timing\uff0c\u5426\u5219\u4e3a\u96f6\uff09", "description_zh_html": "<p>pg_stat_database.blk_read_time \u7edf\u8ba1\u5b57\u6bb5\u3002</p><dl><dt>\u89c6\u56fe</dt><dd><code>pg_stat_database</code></dd><dt>\u5b57\u6bb5</dt><dd><code>blk_read_time</code></dd><dt>SQL \u7c7b\u578b</dt><dd><code>double precision</code></dd></dl><h3>\u540c\u7248\u672c\u4e2d\u6587\u624b\u518c\u5b9a\u4e49</h3><p>\u5728\u8fd9\u4e2a\u6570\u636e\u5e93\u4e2d\u901a\u8fc7\u540e\u7aef\u8bfb\u53d6\u6570\u636e\u6587\u4ef6\u5757\u6240\u82b1\u8d39\u7684\u65f6\u95f4\uff0c\u4ee5\u6beb\u79d2\u4e3a\u5355\u4f4d\uff08\u5982\u679c\u542f\u7528\u4e86 track_io_timing\uff0c\u5426\u5219\u4e3a\u96f6\uff09</p><p><a href=\"/zh/docs/17/monitoring-stats.html#\">\u67e5\u770b\u5b8c\u6574\u4e2d\u6587\u624b\u518c\u4e0e\u4e0a\u4e0b\u6587</a>\u3002</p>"}, "summary": "\u5728\u8fd9\u4e2a\u6570\u636e\u5e93\u4e2d\u901a\u8fc7\u540e\u7aef\u8bfb\u53d6\u6570\u636e\u6587\u4ef6\u5757\u6240\u82b1\u8d39\u7684\u65f6\u95f4\uff0c\u4ee5\u6beb\u79d2\u4e3a\u5355\u4f4d\uff08\u5982\u679c\u542f\u7528\u4e86 track_io_timing\uff0c\u5426\u5219\u4e3a\u96f6\uff09", "version": "17", "link_map": {"/zh/docs/17/monitoring-stats.html": "/docs/17/monitoring-stats.html"}, "body_html": "<p>pg_stat_database.blk_read_time \u7edf\u8ba1\u5b57\u6bb5\u3002</p><dl><dt>\u89c6\u56fe</dt><dd><code>pg_stat_database</code></dd><dt>\u5b57\u6bb5</dt><dd><code>blk_read_time</code></dd><dt>SQL \u7c7b\u578b</dt><dd><code>double precision</code></dd></dl><h3>\u540c\u7248\u672c\u4e2d\u6587\u624b\u518c\u5b9a\u4e49</h3><p>\u5728\u8fd9\u4e2a\u6570\u636e\u5e93\u4e2d\u901a\u8fc7\u540e\u7aef\u8bfb\u53d6\u6570\u636e\u6587\u4ef6\u5757\u6240\u82b1\u8d39\u7684\u65f6\u95f4\uff0c\u4ee5\u6beb\u79d2\u4e3a\u5355\u4f4d\uff08\u5982\u679c\u542f\u7528\u4e86 track_io_timing\uff0c\u5426\u5219\u4e3a\u96f6\uff09</p><p><a href=\"/zh/docs/17/monitoring-stats.html\" rel=\"nofollow\">\u67e5\u770b\u5b8c\u6574\u4e2d\u6587\u624b\u518c\u4e0e\u4e0a\u4e0b\u6587</a>\u3002</p>", "body_sha256": "ac25984dc4aaabfadb0b5a6005bb23be5a0d6c42970606ecf72f83a26ad16484", "content_hash": "259c9b82ddec1d2fdf71a6bb6fb7ed918d5c38ffcb06cb066417397e6b56f634", "source_database": "center", "source_revision": "dd27f2b3c59e73ed14aa3324901242bf69a032a6347805f274e6260322d42979"}, "signature": "SELECT blk_read_time FROM pg_catalog.pg_stat_database;", "tables_zh": [], "documented": true, "description": ["\u5728\u8fd9\u4e2a\u6570\u636e\u5e93\u4e2d\u901a\u8fc7\u540e\u7aef\u8bfb\u53d6\u6570\u636e\u6587\u4ef6\u5757\u6240\u82b1\u8d39\u7684\u65f6\u95f4\uff0c\u4ee5\u6beb\u79d2\u4e3a\u5355\u4f4d\uff08\u5982\u679c\u542f\u7528\u4e86 track_io_timing\uff0c\u5426\u5219\u4e3a\u96f6\uff09"], "manual_html": "", "manual_path": "/docs/17/monitoring-stats.html", "sections_zh": [{"title": "\u89c6\u56fe\u8bed\u4e49", "paragraphs": ["pg_stat_database \u89c6\u56fe\u5c06\u5305\u542b\u4e00\u884c\u7528\u4e8e\u96c6\u7c07\u4e2d\u7684\u6bcf\u4e2a\u6570\u636e\u5e93\uff0c\u52a0\u4e00\u884c\u7528\u4e8e\u5171\u4eab\u5bf9\u8c61\uff0c\u663e\u793a\u6570\u636e\u5e93\u8303\u56f4\u7684\u7edf\u8ba1\u4fe1\u606f\u3002"]}, {"title": "\u91c7\u96c6\u4e0e\u91cd\u7f6e\u8bed\u4e49", "paragraphs": ["\u91cd\u7f6e\u8303\u56f4\u548c\u53ef\u89c1\u6027\u8bf7\u53c2\u9605\u4e0b\u65b9\u540c\u7248\u672c\u7684\u7edf\u8ba1\u4fe1\u606f\u6536\u96c6\u4e0e\u89c6\u56fe\u6587\u6863\u3002\u4e0d\u6839\u636e\u5b57\u6bb5\u540d\u79f0\u63a8\u65ad\u5404\u5b57\u6bb5\u7684\u91cd\u7f6e\u89c4\u5219\u3002"]}, {"code": "SELECT blk_read_time FROM pg_catalog.pg_stat_database;", "title": "\u67e5\u770b\u6b64\u5b57\u6bb5", "paragraphs": ["\u793a\u4f8b\u67e5\u8be2\uff1b\u4e0d\u8868\u793a\u5df2\u6267\u884c\uff0c\u4e5f\u4e0d\u63d0\u4f9b\u5b9e\u6d4b\u503c\u3002"]}], "source_only": false, "localization": {"status": "complete", "sources": [{"url": "/docs/17/monitoring-stats.html", "method": "same-major semantic node", "sha256": "5cd346cc373a5a006b07664d9969d4c630c8ea55dea33b8f3211f061ce43e54f", "language": "zh", "matched_nodes": ["#MONITORING-STATS/div[21]/div[3]/div[1]/table[0]/tbody[2]/tr[18]/td[0]/p[1]", "#MONITORING-STATS/div[21]/p[2]"]}], "language": "zh", "original_text": {"/versions/17/description/0": "Time spent reading data file blocks by backends in this database, in milliseconds (if track_io_timing is enabled, otherwise zero)", "/versions/17/facts/0/label": "View", "/versions/17/facts/1/label": "Field", "/versions/17/facts/2/label": "SQL type", "/versions/17/facts/3/label": "Units named in the field definition", "/versions/17/facts/4/label": "Reset observation", "/versions/17/facts/4/value": "Time at which these statistics were last reset", "/versions/17/related/0/label": "pg_stat_database columns", "/versions/17/related/1/label": "Statistics collection and reset functions", "/versions/17/sections/0/title": "View semantics", "/versions/17/sections/1/title": "Collection and reset context", "/versions/17/sections/2/title": "Inspect this field", "/versions/17/sections/0/paragraphs/0": "The pg_stat_database view will contain one row for each database in the cluster, plus one for shared objects, showing database-wide statistics.", "/versions/17/sections/1/paragraphs/0": "Read the same-version statistics collection and view documentation below for reset scope and visibility. No per-field reset rule is inferred from the field name.", "/versions/17/sections/2/paragraphs/0": "Example query; no execution result or measured value is asserted."}, "fallback_fields": [], "source_language": "en", "original_snapshot_sha256": "3d562aad4bcf412ac61e60d0411793303030623960383daaf404ea55c4d97a13", "canonical_center_text_hash": "259c9b82ddec1d2fdf71a6bb6fb7ed918d5c38ffcb06cb066417397e6b56f634"}, "description_zh": "\u5728\u8fd9\u4e2a\u6570\u636e\u5e93\u4e2d\u901a\u8fc7\u540e\u7aef\u8bfb\u53d6\u6570\u636e\u6587\u4ef6\u5757\u6240\u82b1\u8d39\u7684\u65f6\u95f4\uff0c\u4ee5\u6beb\u79d2\u4e3a\u5355\u4f4d\uff08\u5982\u679c\u542f\u7528\u4e86 track_io_timing\uff0c\u5426\u5219\u4e3a\u96f6\uff09", "comparison_data": {"view": "pg_stat_database", "field": "blk_read_time", "sql_type": "double precision", "units_mentioned": ["blocks", "milliseconds"]}, "comparison_hash": "c28bef2f31d56d506979b87f818489284f8c0a9025ea0ad48c4886b39bdc6456", "manual_language": "zh", "units_mentioned": ["blocks", "milliseconds"], "description_zh_html": "<p>pg_stat_database.blk_read_time \u7edf\u8ba1\u5b57\u6bb5\u3002</p><dl><dt>\u89c6\u56fe</dt><dd><code>pg_stat_database</code></dd><dt>\u5b57\u6bb5</dt><dd><code>blk_read_time</code></dd><dt>SQL \u7c7b\u578b</dt><dd><code>double precision</code></dd></dl><h3>\u540c\u7248\u672c\u4e2d\u6587\u624b\u518c\u5b9a\u4e49</h3><p>\u5728\u8fd9\u4e2a\u6570\u636e\u5e93\u4e2d\u901a\u8fc7\u540e\u7aef\u8bfb\u53d6\u6570\u636e\u6587\u4ef6\u5757\u6240\u82b1\u8d39\u7684\u65f6\u95f4\uff0c\u4ee5\u6beb\u79d2\u4e3a\u5355\u4f4d\uff08\u5982\u679c\u542f\u7528\u4e86 track_io_timing\uff0c\u5426\u5219\u4e3a\u96f6\uff09</p><p><a href=\"/zh/docs/17/monitoring-stats.html\" rel=\"nofollow\">\u67e5\u770b\u5b8c\u6574\u4e2d\u6587\u624b\u518c\u4e0e\u4e0a\u4e0b\u6587</a>\u3002</p>"}, "18": {"view": "pg_stat_database", "facts": [{"label": "\u89c6\u56fe", "value": "pg_stat_database"}, {"label": "\u5b57\u6bb5", "value": "blk_read_time"}, {"label": "SQL \u7c7b\u578b", "value": "double precision"}, {"label": "\u5b57\u6bb5\u5b9a\u4e49\u8bb0\u8f7d\u7684\u5355\u4f4d", "value": "blocks, milliseconds"}, {"label": "\u91cd\u7f6e\u6761\u4ef6", "value": "\u8fd9\u4e9b\u7edf\u8ba1\u4e0a\u6b21\u91cd\u7f6e\u7684\u65f6\u95f4"}], "field": "blk_read_time", "tables": [], "related": [{"url": "/wiki/catalog/pg_stat_database/?v=18", "label": "pg_stat_database \u5b57\u6bb5"}, {"url": "/docs/18/monitoring-stats.html", "label": "\u7edf\u8ba1\u6536\u96c6\u4e0e\u91cd\u7f6e\u51fd\u6570"}], "release": {"ref": "https://ftp.postgresql.org/pub/source/v18.6/postgresql-18.6.tar.bz2", "label": "18.6", "major": "18", "channel": "stable", "revision": "555610c24d53e4316da5b7d3fc25c279d96856d5e0e23ee308c328c5fa881d9f"}, "sources": [{"url": "/docs/18/monitoring-stats.html#PG-STAT-DATABASE-VIEW", "path": "monitoring-stats.html", "label": "PostgreSQL 18 English manual", "sha256": "aa979eed08627fbf715a9d792094a162a73671db5af810f3ab2aad3e073d5722"}], "zh_from": {"kind": "same-version-chinese-manual-with-source-derived-structured-summary", "manual": {"url": "/zh/docs/18/monitoring-stats.html#", "anchor": "", "column": "blk_read_time", "locale": "zh-Hans", "version": "18", "build_id": 107, "page_key": "monitoring-stats.html", "extraction": "exact-catalog-field", "source_hash": "0274aac7991450316bcf7be44635653b6d896fb00e321242c1b6674cb05c2e53", "source_revision": "unknown:rendered-translation-baseline", "translation_revision": "git:b1b500221dbe5437cfca004d6b04d3f6e422765d;html-sha256:08e987a66af27b98444a8057c256314eafa13611a3fb9e888214fc436824244b"}, "body_sha256": "370d5139b1fe3ec1e03f1395dd729977bc7a43526c13f8174423ef198aecdfcd", "runtime_rerun": false, "authored_translation": "source-derived-structured-summary", "source_facts_revision": "555610c24d53e4316da5b7d3fc25c279d96856d5e0e23ee308c328c5fa881d9f"}, "facts_zh": [{"label": "\u89c6\u56fe", "value": "pg_stat_database"}, {"label": "\u5b57\u6bb5", "value": "blk_read_time"}, {"label": "SQL \u7c7b\u578b", "value": "double precision"}, {"label": "\u5b57\u6bb5\u5b9a\u4e49\u8bb0\u8f7d\u7684\u5355\u4f4d", "value": "blocks, milliseconds"}, {"label": "\u91cd\u7f6e\u6761\u4ef6", "value": "\u8fd9\u4e9b\u7edf\u8ba1\u4e0a\u6b21\u91cd\u7f6e\u7684\u65f6\u95f4"}], "sections": [{"title": "\u89c6\u56fe\u8bed\u4e49", "paragraphs": ["pg_stat_database \u89c6\u56fe\u5c06\u5305\u542b\u4e00\u884c\u7528\u4e8e\u96c6\u7c07\u4e2d\u7684\u6bcf\u4e2a\u6570\u636e\u5e93\uff0c\u52a0\u4e00\u884c\u7528\u4e8e\u5171\u4eab\u5bf9\u8c61\uff0c\u663e\u793a\u6570\u636e\u5e93\u8303\u56f4\u7684\u7edf\u8ba1\u4fe1\u606f\u3002"]}, {"title": "\u91c7\u96c6\u4e0e\u91cd\u7f6e\u8bed\u4e49", "paragraphs": ["\u91cd\u7f6e\u8303\u56f4\u548c\u53ef\u89c1\u6027\u8bf7\u53c2\u9605\u4e0b\u65b9\u540c\u7248\u672c\u7684\u7edf\u8ba1\u4fe1\u606f\u6536\u96c6\u4e0e\u89c6\u56fe\u6587\u6863\u3002\u4e0d\u6839\u636e\u5b57\u6bb5\u540d\u79f0\u63a8\u65ad\u5404\u5b57\u6bb5\u7684\u91cd\u7f6e\u89c4\u5219\u3002"]}, {"code": "SELECT blk_read_time FROM pg_catalog.pg_stat_database;", "title": "\u67e5\u770b\u6b64\u5b57\u6bb5", "paragraphs": ["\u793a\u4f8b\u67e5\u8be2\uff1b\u4e0d\u8868\u793a\u5df2\u6267\u884c\uff0c\u4e5f\u4e0d\u63d0\u4f9b\u5b9e\u6d4b\u503c\u3002"]}], "sql_type": "double precision", "center_zh": {"title": "pg_stat_database.blk_read_time", "locale": "zh-Hans", "source": {"key": "pg_stat_database-blk_read_time", "locale": "zh-Hans", "version": "18", "text_hash": "b6cc01de3bb7bacd0b3dd65d141fc460df8eee341d3104a8039bbf25b3182527", "collection": "metric", "dataset_hash": "7c31b524dfe136022d39a6ae8dcfac6b3bbd5f8fdaf422536599981252aff0c9", "source_database": "center", "source_revision": "555610c24d53e4316da5b7d3fc25c279d96856d5e0e23ee308c328c5fa881d9f"}, "payload": {"facts": [{"label": "\u89c6\u56fe", "value": "pg_stat_database"}, {"label": "\u5b57\u6bb5", "value": "blk_read_time"}, {"label": "SQL \u7c7b\u578b", "value": "double precision"}, {"label": "\u5b57\u6bb5\u5b9a\u4e49\u8bb0\u8f7d\u7684\u5355\u4f4d", "value": "blocks, milliseconds"}, {"label": "\u91cd\u7f6e\u6761\u4ef6", "value": "\u8fd9\u4e9b\u7edf\u8ba1\u4e0a\u6b21\u91cd\u7f6e\u7684\u65f6\u95f4"}], "tables": [], "zh_from": {"kind": "same-version-chinese-manual-with-source-derived-structured-summary", "manual": {"url": "/zh/docs/18/monitoring-stats.html#", "anchor": "", "column": "blk_read_time", "locale": "zh-Hans", "version": "18", "build_id": 107, "page_key": "monitoring-stats.html", "extraction": "exact-catalog-field", "source_hash": "0274aac7991450316bcf7be44635653b6d896fb00e321242c1b6674cb05c2e53", "source_revision": "unknown:rendered-translation-baseline", "translation_revision": "git:b1b500221dbe5437cfca004d6b04d3f6e422765d;html-sha256:08e987a66af27b98444a8057c256314eafa13611a3fb9e888214fc436824244b"}, "body_sha256": "370d5139b1fe3ec1e03f1395dd729977bc7a43526c13f8174423ef198aecdfcd", "runtime_rerun": false, "authored_translation": "source-derived-structured-summary", "source_facts_revision": "555610c24d53e4316da5b7d3fc25c279d96856d5e0e23ee308c328c5fa881d9f"}, "sections": [{"title": "\u89c6\u56fe\u8bed\u4e49", "paragraphs": ["pg_stat_database \u89c6\u56fe\u5c06\u5305\u542b\u4e00\u884c\u7528\u4e8e\u96c6\u7c07\u4e2d\u7684\u6bcf\u4e2a\u6570\u636e\u5e93\uff0c\u52a0\u4e00\u884c\u7528\u4e8e\u5171\u4eab\u5bf9\u8c61\uff0c\u663e\u793a\u6570\u636e\u5e93\u8303\u56f4\u7684\u7edf\u8ba1\u4fe1\u606f\u3002"]}, {"title": "\u91c7\u96c6\u4e0e\u91cd\u7f6e\u8bed\u4e49", "paragraphs": ["\u91cd\u7f6e\u8303\u56f4\u548c\u53ef\u89c1\u6027\u8bf7\u53c2\u9605\u4e0b\u65b9\u540c\u7248\u672c\u7684\u7edf\u8ba1\u4fe1\u606f\u6536\u96c6\u4e0e\u89c6\u56fe\u6587\u6863\u3002\u4e0d\u6839\u636e\u5b57\u6bb5\u540d\u79f0\u63a8\u65ad\u5404\u5b57\u6bb5\u7684\u91cd\u7f6e\u89c4\u5219\u3002"]}, {"code": "SELECT blk_read_time FROM pg_catalog.pg_stat_database;", "title": "\u67e5\u770b\u6b64\u5b57\u6bb5", "paragraphs": ["\u793a\u4f8b\u67e5\u8be2\uff1b\u4e0d\u8868\u793a\u5df2\u6267\u884c\uff0c\u4e5f\u4e0d\u63d0\u4f9b\u5b9e\u6d4b\u503c\u3002"]}], "description_zh": "\u5728\u8fd9\u4e2a\u6570\u636e\u5e93\u4e2d\u901a\u8fc7\u540e\u7aef\u8bfb\u53d6\u6570\u636e\u6587\u4ef6\u5757\u6240\u82b1\u8d39\u7684\u65f6\u95f4\uff0c\u4ee5\u6beb\u79d2\u4e3a\u5355\u4f4d\uff08\u5982\u679c\u542f\u7528\u4e86 track_io_timing\uff0c\u5426\u5219\u4e3a\u96f6\uff09", "description_zh_html": "<p>pg_stat_database.blk_read_time \u7edf\u8ba1\u5b57\u6bb5\u3002</p><dl><dt>\u89c6\u56fe</dt><dd><code>pg_stat_database</code></dd><dt>\u5b57\u6bb5</dt><dd><code>blk_read_time</code></dd><dt>SQL \u7c7b\u578b</dt><dd><code>double precision</code></dd></dl><h3>\u540c\u7248\u672c\u4e2d\u6587\u624b\u518c\u5b9a\u4e49</h3><p>\u5728\u8fd9\u4e2a\u6570\u636e\u5e93\u4e2d\u901a\u8fc7\u540e\u7aef\u8bfb\u53d6\u6570\u636e\u6587\u4ef6\u5757\u6240\u82b1\u8d39\u7684\u65f6\u95f4\uff0c\u4ee5\u6beb\u79d2\u4e3a\u5355\u4f4d\uff08\u5982\u679c\u542f\u7528\u4e86 track_io_timing\uff0c\u5426\u5219\u4e3a\u96f6\uff09</p><p><a href=\"/zh/docs/18/monitoring-stats.html#\">\u67e5\u770b\u5b8c\u6574\u4e2d\u6587\u624b\u518c\u4e0e\u4e0a\u4e0b\u6587</a>\u3002</p>"}, "summary": "\u5728\u8fd9\u4e2a\u6570\u636e\u5e93\u4e2d\u901a\u8fc7\u540e\u7aef\u8bfb\u53d6\u6570\u636e\u6587\u4ef6\u5757\u6240\u82b1\u8d39\u7684\u65f6\u95f4\uff0c\u4ee5\u6beb\u79d2\u4e3a\u5355\u4f4d\uff08\u5982\u679c\u542f\u7528\u4e86 track_io_timing\uff0c\u5426\u5219\u4e3a\u96f6\uff09", "version": "18", "link_map": {"/zh/docs/18/monitoring-stats.html": "/docs/18/monitoring-stats.html"}, "body_html": "<p>pg_stat_database.blk_read_time \u7edf\u8ba1\u5b57\u6bb5\u3002</p><dl><dt>\u89c6\u56fe</dt><dd><code>pg_stat_database</code></dd><dt>\u5b57\u6bb5</dt><dd><code>blk_read_time</code></dd><dt>SQL \u7c7b\u578b</dt><dd><code>double precision</code></dd></dl><h3>\u540c\u7248\u672c\u4e2d\u6587\u624b\u518c\u5b9a\u4e49</h3><p>\u5728\u8fd9\u4e2a\u6570\u636e\u5e93\u4e2d\u901a\u8fc7\u540e\u7aef\u8bfb\u53d6\u6570\u636e\u6587\u4ef6\u5757\u6240\u82b1\u8d39\u7684\u65f6\u95f4\uff0c\u4ee5\u6beb\u79d2\u4e3a\u5355\u4f4d\uff08\u5982\u679c\u542f\u7528\u4e86 track_io_timing\uff0c\u5426\u5219\u4e3a\u96f6\uff09</p><p><a href=\"/zh/docs/18/monitoring-stats.html\" rel=\"nofollow\">\u67e5\u770b\u5b8c\u6574\u4e2d\u6587\u624b\u518c\u4e0e\u4e0a\u4e0b\u6587</a>\u3002</p>", "body_sha256": "9a4d0d1858839f588e1ef2bf313800291fc0d85f2e078d461888f8015af3afa4", "content_hash": "b6cc01de3bb7bacd0b3dd65d141fc460df8eee341d3104a8039bbf25b3182527", "source_database": "center", "source_revision": "555610c24d53e4316da5b7d3fc25c279d96856d5e0e23ee308c328c5fa881d9f"}, "signature": "SELECT blk_read_time FROM pg_catalog.pg_stat_database;", "tables_zh": [], "documented": true, "description": ["\u5728\u8fd9\u4e2a\u6570\u636e\u5e93\u4e2d\u901a\u8fc7\u540e\u7aef\u8bfb\u53d6\u6570\u636e\u6587\u4ef6\u5757\u6240\u82b1\u8d39\u7684\u65f6\u95f4\uff0c\u4ee5\u6beb\u79d2\u4e3a\u5355\u4f4d\uff08\u5982\u679c\u542f\u7528\u4e86 track_io_timing\uff0c\u5426\u5219\u4e3a\u96f6\uff09"], "manual_html": "", "manual_path": "/docs/18/monitoring-stats.html", "sections_zh": [{"title": "\u89c6\u56fe\u8bed\u4e49", "paragraphs": ["pg_stat_database \u89c6\u56fe\u5c06\u5305\u542b\u4e00\u884c\u7528\u4e8e\u96c6\u7c07\u4e2d\u7684\u6bcf\u4e2a\u6570\u636e\u5e93\uff0c\u52a0\u4e00\u884c\u7528\u4e8e\u5171\u4eab\u5bf9\u8c61\uff0c\u663e\u793a\u6570\u636e\u5e93\u8303\u56f4\u7684\u7edf\u8ba1\u4fe1\u606f\u3002"]}, {"title": "\u91c7\u96c6\u4e0e\u91cd\u7f6e\u8bed\u4e49", "paragraphs": ["\u91cd\u7f6e\u8303\u56f4\u548c\u53ef\u89c1\u6027\u8bf7\u53c2\u9605\u4e0b\u65b9\u540c\u7248\u672c\u7684\u7edf\u8ba1\u4fe1\u606f\u6536\u96c6\u4e0e\u89c6\u56fe\u6587\u6863\u3002\u4e0d\u6839\u636e\u5b57\u6bb5\u540d\u79f0\u63a8\u65ad\u5404\u5b57\u6bb5\u7684\u91cd\u7f6e\u89c4\u5219\u3002"]}, {"code": "SELECT blk_read_time FROM pg_catalog.pg_stat_database;", "title": "\u67e5\u770b\u6b64\u5b57\u6bb5", "paragraphs": ["\u793a\u4f8b\u67e5\u8be2\uff1b\u4e0d\u8868\u793a\u5df2\u6267\u884c\uff0c\u4e5f\u4e0d\u63d0\u4f9b\u5b9e\u6d4b\u503c\u3002"]}], "source_only": false, "localization": {"status": "complete", "sources": [{"url": "/docs/18/monitoring-stats.html", "method": "same-major semantic node", "sha256": "ff0b10c5fb4b75c247e38b7ad0e8a50fa0b6ebaa25e68c8c67a1ca972bda40b1", "language": "zh", "matched_nodes": ["#MONITORING-STATS/div[21]/div[3]/div[1]/table[0]/tbody[2]/tr[18]/td[0]/p[1]", "#MONITORING-STATS/div[21]/p[2]"]}], "language": "zh", "original_text": {"/versions/18/description/0": "Time spent reading data file blocks by backends in this database, in milliseconds (if track_io_timing is enabled, otherwise zero)", "/versions/18/facts/0/label": "View", "/versions/18/facts/1/label": "Field", "/versions/18/facts/2/label": "SQL type", "/versions/18/facts/3/label": "Units named in the field definition", "/versions/18/facts/4/label": "Reset observation", "/versions/18/facts/4/value": "Time at which these statistics were last reset", "/versions/18/related/0/label": "pg_stat_database columns", "/versions/18/related/1/label": "Statistics collection and reset functions", "/versions/18/sections/0/title": "View semantics", "/versions/18/sections/1/title": "Collection and reset context", "/versions/18/sections/2/title": "Inspect this field", "/versions/18/sections/0/paragraphs/0": "The pg_stat_database view will contain one row for each database in the cluster, plus one for shared objects, showing database-wide statistics.", "/versions/18/sections/1/paragraphs/0": "Read the same-version statistics collection and view documentation below for reset scope and visibility. No per-field reset rule is inferred from the field name.", "/versions/18/sections/2/paragraphs/0": "Example query; no execution result or measured value is asserted."}, "fallback_fields": [], "source_language": "en", "original_snapshot_sha256": "442fb942290c0feae056f0b91d98475711170d4d27c7b33808dfcc9fb72d9eb0", "canonical_center_text_hash": "b6cc01de3bb7bacd0b3dd65d141fc460df8eee341d3104a8039bbf25b3182527"}, "description_zh": "\u5728\u8fd9\u4e2a\u6570\u636e\u5e93\u4e2d\u901a\u8fc7\u540e\u7aef\u8bfb\u53d6\u6570\u636e\u6587\u4ef6\u5757\u6240\u82b1\u8d39\u7684\u65f6\u95f4\uff0c\u4ee5\u6beb\u79d2\u4e3a\u5355\u4f4d\uff08\u5982\u679c\u542f\u7528\u4e86 track_io_timing\uff0c\u5426\u5219\u4e3a\u96f6\uff09", "comparison_data": {"view": "pg_stat_database", "field": "blk_read_time", "sql_type": "double precision", "units_mentioned": ["blocks", "milliseconds"]}, "comparison_hash": "c28bef2f31d56d506979b87f818489284f8c0a9025ea0ad48c4886b39bdc6456", "manual_language": "zh", "units_mentioned": ["blocks", "milliseconds"], "description_zh_html": "<p>pg_stat_database.blk_read_time \u7edf\u8ba1\u5b57\u6bb5\u3002</p><dl><dt>\u89c6\u56fe</dt><dd><code>pg_stat_database</code></dd><dt>\u5b57\u6bb5</dt><dd><code>blk_read_time</code></dd><dt>SQL \u7c7b\u578b</dt><dd><code>double precision</code></dd></dl><h3>\u540c\u7248\u672c\u4e2d\u6587\u624b\u518c\u5b9a\u4e49</h3><p>\u5728\u8fd9\u4e2a\u6570\u636e\u5e93\u4e2d\u901a\u8fc7\u540e\u7aef\u8bfb\u53d6\u6570\u636e\u6587\u4ef6\u5757\u6240\u82b1\u8d39\u7684\u65f6\u95f4\uff0c\u4ee5\u6beb\u79d2\u4e3a\u5355\u4f4d\uff08\u5982\u679c\u542f\u7528\u4e86 track_io_timing\uff0c\u5426\u5219\u4e3a\u96f6\uff09</p><p><a href=\"/zh/docs/18/monitoring-stats.html\" rel=\"nofollow\">\u67e5\u770b\u5b8c\u6574\u4e2d\u6587\u624b\u518c\u4e0e\u4e0a\u4e0b\u6587</a>\u3002</p>", "center_zh_rendered": "<p>pg_stat_database.blk_read_time \u7edf\u8ba1\u5b57\u6bb5\u3002</p><dl><dt>\u89c6\u56fe</dt><dd><code>pg_stat_database</code></dd><dt>\u5b57\u6bb5</dt><dd><code>blk_read_time</code></dd><dt>SQL \u7c7b\u578b</dt><dd><code>double precision</code></dd></dl><h3>\u540c\u7248\u672c\u4e2d\u6587\u624b\u518c\u5b9a\u4e49</h3><p>\u5728\u8fd9\u4e2a\u6570\u636e\u5e93\u4e2d\u901a\u8fc7\u540e\u7aef\u8bfb\u53d6\u6570\u636e\u6587\u4ef6\u5757\u6240\u82b1\u8d39\u7684\u65f6\u95f4\uff0c\u4ee5\u6beb\u79d2\u4e3a\u5355\u4f4d\uff08\u5982\u679c\u542f\u7528\u4e86 track_io_timing\uff0c\u5426\u5219\u4e3a\u96f6\uff09</p><p><a href=\"/docs/18/monitoring-stats.html\">\u67e5\u770b\u5b8c\u6574\u4e2d\u6587\u624b\u518c\u4e0e\u4e0a\u4e0b\u6587</a>\u3002</p>"}, "19": {"view": "pg_stat_database", "facts": [{"label": "\u89c6\u56fe", "value": "pg_stat_database"}, {"label": "\u5b57\u6bb5", "value": "blk_read_time"}, {"label": "SQL \u7c7b\u578b", "value": "double precision"}, {"label": "\u5b57\u6bb5\u5b9a\u4e49\u8bb0\u8f7d\u7684\u5355\u4f4d", "value": "blocks, milliseconds"}, {"label": "\u91cd\u7f6e\u6761\u4ef6", "value": "\u8fd9\u4e9b\u7edf\u8ba1\u4e0a\u6b21\u91cd\u7f6e\u7684\u65f6\u95f4"}], "field": "blk_read_time", "tables": [], "related": [{"url": "/wiki/catalog/pg_stat_database/?v=19", "label": "pg_stat_database \u5b57\u6bb5"}, {"url": "/docs/19/monitoring-stats.html", "label": "\u7edf\u8ba1\u6536\u96c6\u4e0e\u91cd\u7f6e\u51fd\u6570"}], "release": {"ref": "https://ftp.postgresql.org/pub/source/v19rc1/postgresql-19rc1.tar.bz2", "label": "19rc1", "major": "19", "channel": "preview", "revision": "af105fc8e960fc836a09fc2cd7f582b49fd17675d9d36631abe3a565bfd7d701", "source_sha256": "af105fc8e960fc836a09fc2cd7f582b49fd17675d9d36631abe3a565bfd7d701", "manual_fingerprint": "63afc6091780ed5e52920ff9ef5adb6aa7dfcc82f8f413ed36ad46095788488d", "catalog_fingerprint": "da7a8a4e03b72cd120b91ffdff4265e065ccad9eab9964fc3eb1279a58464eb8"}, "sources": [{"url": "/docs/19/monitoring-stats.html#PG-STAT-DATABASE-VIEW", "path": "monitoring-stats.html", "label": "PostgreSQL 19 English manual", "sha256": "650f6d5aceb2bb6fe0ed91640c7292c21e805a6d2912eff129665318c942274c"}], "zh_from": {"kind": "same-version-chinese-manual-with-source-derived-structured-summary", "manual": {"url": "/zh/docs/19/monitoring-stats.html#", "anchor": "", "column": "blk_read_time", "locale": "zh-Hans", "version": "19", "build_id": 109, "page_key": "monitoring-stats.html", "extraction": "exact-catalog-field", "source_hash": "38f7e14f495b50d93ec5fe73e5630957512a3cbd01aa83c8d7dd33abfeedbb62", "source_revision": "sha256:af105fc8e960fc836a09fc2cd7f582b49fd17675d9d36631abe3a565bfd7d701", "translation_revision": "git:b1b500221dbe5437cfca004d6b04d3f6e422765d;html-sha256:65fda1f1b62a89992b84014c9157e61b67dbe8190e93945826efec668fad038c"}, "body_sha256": "5e6bb29b0f44b2d592e50b85ab27f9cf38ab9b02f5a3f25d2fbe1183be8919cc", "runtime_rerun": false, "authored_translation": "source-derived-structured-summary", "source_facts_revision": "af105fc8e960fc836a09fc2cd7f582b49fd17675d9d36631abe3a565bfd7d701"}, "facts_zh": [{"label": "\u89c6\u56fe", "value": "pg_stat_database"}, {"label": "\u5b57\u6bb5", "value": "blk_read_time"}, {"label": "SQL \u7c7b\u578b", "value": "double precision"}, {"label": "\u5b57\u6bb5\u5b9a\u4e49\u8bb0\u8f7d\u7684\u5355\u4f4d", "value": "blocks, milliseconds"}, {"label": "\u91cd\u7f6e\u6761\u4ef6", "value": "\u8fd9\u4e9b\u7edf\u8ba1\u4e0a\u6b21\u91cd\u7f6e\u7684\u65f6\u95f4"}], "sections": [{"title": "\u89c6\u56fe\u8bed\u4e49", "paragraphs": ["pg_stat_database \u89c6\u56fe\u5c06\u5305\u542b\u4e00\u884c\u7528\u4e8e\u96c6\u7c07\u4e2d\u7684\u6bcf\u4e2a\u6570\u636e\u5e93\uff0c\u52a0\u4e00\u884c\u7528\u4e8e\u5171\u4eab\u5bf9\u8c61\uff0c\u663e\u793a\u6570\u636e\u5e93\u8303\u56f4\u7684\u7edf\u8ba1\u4fe1\u606f\u3002"]}, {"title": "\u91c7\u96c6\u4e0e\u91cd\u7f6e\u8bed\u4e49", "paragraphs": ["\u91cd\u7f6e\u8303\u56f4\u548c\u53ef\u89c1\u6027\u8bf7\u53c2\u9605\u4e0b\u65b9\u540c\u7248\u672c\u7684\u7edf\u8ba1\u4fe1\u606f\u6536\u96c6\u4e0e\u89c6\u56fe\u6587\u6863\u3002\u4e0d\u6839\u636e\u5b57\u6bb5\u540d\u79f0\u63a8\u65ad\u5404\u5b57\u6bb5\u7684\u91cd\u7f6e\u89c4\u5219\u3002"]}, {"code": "SELECT blk_read_time FROM pg_catalog.pg_stat_database;", "title": "\u67e5\u770b\u6b64\u5b57\u6bb5", "paragraphs": ["\u793a\u4f8b\u67e5\u8be2\uff1b\u4e0d\u8868\u793a\u5df2\u6267\u884c\uff0c\u4e5f\u4e0d\u63d0\u4f9b\u5b9e\u6d4b\u503c\u3002"]}], "sql_type": "double precision", "center_zh": {"title": "pg_stat_database.blk_read_time", "locale": "zh-Hans", "source": {"key": "pg_stat_database-blk_read_time", "locale": "zh-Hans", "version": "19", "text_hash": "f1663096f3e7dd2998c4cbbe9b84130ef65ecd1e8877a09d6632961a0a44510d", "collection": "metric", "dataset_hash": "7c31b524dfe136022d39a6ae8dcfac6b3bbd5f8fdaf422536599981252aff0c9", "source_database": "center", "source_revision": "af105fc8e960fc836a09fc2cd7f582b49fd17675d9d36631abe3a565bfd7d701"}, "payload": {"facts": [{"label": "\u89c6\u56fe", "value": "pg_stat_database"}, {"label": "\u5b57\u6bb5", "value": "blk_read_time"}, {"label": "SQL \u7c7b\u578b", "value": "double precision"}, {"label": "\u5b57\u6bb5\u5b9a\u4e49\u8bb0\u8f7d\u7684\u5355\u4f4d", "value": "blocks, milliseconds"}, {"label": "\u91cd\u7f6e\u6761\u4ef6", "value": "\u8fd9\u4e9b\u7edf\u8ba1\u4e0a\u6b21\u91cd\u7f6e\u7684\u65f6\u95f4"}], "tables": [], "zh_from": {"kind": "same-version-chinese-manual-with-source-derived-structured-summary", "manual": {"url": "/zh/docs/19/monitoring-stats.html#", "anchor": "", "column": "blk_read_time", "locale": "zh-Hans", "version": "19", "build_id": 109, "page_key": "monitoring-stats.html", "extraction": "exact-catalog-field", "source_hash": "38f7e14f495b50d93ec5fe73e5630957512a3cbd01aa83c8d7dd33abfeedbb62", "source_revision": "sha256:af105fc8e960fc836a09fc2cd7f582b49fd17675d9d36631abe3a565bfd7d701", "translation_revision": "git:b1b500221dbe5437cfca004d6b04d3f6e422765d;html-sha256:65fda1f1b62a89992b84014c9157e61b67dbe8190e93945826efec668fad038c"}, "body_sha256": "5e6bb29b0f44b2d592e50b85ab27f9cf38ab9b02f5a3f25d2fbe1183be8919cc", "runtime_rerun": false, "authored_translation": "source-derived-structured-summary", "source_facts_revision": "af105fc8e960fc836a09fc2cd7f582b49fd17675d9d36631abe3a565bfd7d701"}, "sections": [{"title": "\u89c6\u56fe\u8bed\u4e49", "paragraphs": ["pg_stat_database \u89c6\u56fe\u5c06\u5305\u542b\u4e00\u884c\u7528\u4e8e\u96c6\u7c07\u4e2d\u7684\u6bcf\u4e2a\u6570\u636e\u5e93\uff0c\u52a0\u4e00\u884c\u7528\u4e8e\u5171\u4eab\u5bf9\u8c61\uff0c\u663e\u793a\u6570\u636e\u5e93\u8303\u56f4\u7684\u7edf\u8ba1\u4fe1\u606f\u3002"]}, {"title": "\u91c7\u96c6\u4e0e\u91cd\u7f6e\u8bed\u4e49", "paragraphs": ["\u91cd\u7f6e\u8303\u56f4\u548c\u53ef\u89c1\u6027\u8bf7\u53c2\u9605\u4e0b\u65b9\u540c\u7248\u672c\u7684\u7edf\u8ba1\u4fe1\u606f\u6536\u96c6\u4e0e\u89c6\u56fe\u6587\u6863\u3002\u4e0d\u6839\u636e\u5b57\u6bb5\u540d\u79f0\u63a8\u65ad\u5404\u5b57\u6bb5\u7684\u91cd\u7f6e\u89c4\u5219\u3002"]}, {"code": "SELECT blk_read_time FROM pg_catalog.pg_stat_database;", "title": "\u67e5\u770b\u6b64\u5b57\u6bb5", "paragraphs": ["\u793a\u4f8b\u67e5\u8be2\uff1b\u4e0d\u8868\u793a\u5df2\u6267\u884c\uff0c\u4e5f\u4e0d\u63d0\u4f9b\u5b9e\u6d4b\u503c\u3002"]}], "description_zh": "\u5728\u8fd9\u4e2a\u6570\u636e\u5e93\u4e2d\u901a\u8fc7\u540e\u7aef\u8bfb\u53d6\u6570\u636e\u6587\u4ef6\u5757\u6240\u82b1\u8d39\u7684\u65f6\u95f4\uff0c\u4ee5\u6beb\u79d2\u4e3a\u5355\u4f4d\uff08\u5982\u679c\u542f\u7528\u4e86 track_io_timing\uff0c\u5426\u5219\u4e3a\u96f6\uff09", "description_zh_html": "<p>pg_stat_database.blk_read_time \u7edf\u8ba1\u5b57\u6bb5\u3002</p><dl><dt>\u89c6\u56fe</dt><dd><code>pg_stat_database</code></dd><dt>\u5b57\u6bb5</dt><dd><code>blk_read_time</code></dd><dt>SQL \u7c7b\u578b</dt><dd><code>double precision</code></dd></dl><h3>\u540c\u7248\u672c\u4e2d\u6587\u624b\u518c\u5b9a\u4e49</h3><p>\u5728\u8fd9\u4e2a\u6570\u636e\u5e93\u4e2d\u901a\u8fc7\u540e\u7aef\u8bfb\u53d6\u6570\u636e\u6587\u4ef6\u5757\u6240\u82b1\u8d39\u7684\u65f6\u95f4\uff0c\u4ee5\u6beb\u79d2\u4e3a\u5355\u4f4d\uff08\u5982\u679c\u542f\u7528\u4e86 track_io_timing\uff0c\u5426\u5219\u4e3a\u96f6\uff09</p><p><a href=\"/zh/docs/19/monitoring-stats.html#\">\u67e5\u770b\u5b8c\u6574\u4e2d\u6587\u624b\u518c\u4e0e\u4e0a\u4e0b\u6587</a>\u3002</p>"}, "summary": "\u5728\u8fd9\u4e2a\u6570\u636e\u5e93\u4e2d\u901a\u8fc7\u540e\u7aef\u8bfb\u53d6\u6570\u636e\u6587\u4ef6\u5757\u6240\u82b1\u8d39\u7684\u65f6\u95f4\uff0c\u4ee5\u6beb\u79d2\u4e3a\u5355\u4f4d\uff08\u5982\u679c\u542f\u7528\u4e86 track_io_timing\uff0c\u5426\u5219\u4e3a\u96f6\uff09", "version": "19", "link_map": {"/zh/docs/19/monitoring-stats.html": "/docs/19/monitoring-stats.html"}, "body_html": "<p>pg_stat_database.blk_read_time \u7edf\u8ba1\u5b57\u6bb5\u3002</p><dl><dt>\u89c6\u56fe</dt><dd><code>pg_stat_database</code></dd><dt>\u5b57\u6bb5</dt><dd><code>blk_read_time</code></dd><dt>SQL \u7c7b\u578b</dt><dd><code>double precision</code></dd></dl><h3>\u540c\u7248\u672c\u4e2d\u6587\u624b\u518c\u5b9a\u4e49</h3><p>\u5728\u8fd9\u4e2a\u6570\u636e\u5e93\u4e2d\u901a\u8fc7\u540e\u7aef\u8bfb\u53d6\u6570\u636e\u6587\u4ef6\u5757\u6240\u82b1\u8d39\u7684\u65f6\u95f4\uff0c\u4ee5\u6beb\u79d2\u4e3a\u5355\u4f4d\uff08\u5982\u679c\u542f\u7528\u4e86 track_io_timing\uff0c\u5426\u5219\u4e3a\u96f6\uff09</p><p><a href=\"/zh/docs/19/monitoring-stats.html\" rel=\"nofollow\">\u67e5\u770b\u5b8c\u6574\u4e2d\u6587\u624b\u518c\u4e0e\u4e0a\u4e0b\u6587</a>\u3002</p>", "body_sha256": "a4fdd017cc821979e3a743886af1295b331a6efb77b6c41ef453a7adc36224ba", "content_hash": "f1663096f3e7dd2998c4cbbe9b84130ef65ecd1e8877a09d6632961a0a44510d", "source_database": "center", "source_revision": "af105fc8e960fc836a09fc2cd7f582b49fd17675d9d36631abe3a565bfd7d701"}, "signature": "SELECT blk_read_time FROM pg_catalog.pg_stat_database;", "tables_zh": [], "documented": true, "description": ["\u5728\u8fd9\u4e2a\u6570\u636e\u5e93\u4e2d\u901a\u8fc7\u540e\u7aef\u8bfb\u53d6\u6570\u636e\u6587\u4ef6\u5757\u6240\u82b1\u8d39\u7684\u65f6\u95f4\uff0c\u4ee5\u6beb\u79d2\u4e3a\u5355\u4f4d\uff08\u5982\u679c\u542f\u7528\u4e86 track_io_timing\uff0c\u5426\u5219\u4e3a\u96f6\uff09"], "manual_html": "", "manual_path": "/docs/19/monitoring-stats.html", "sections_zh": [{"title": "\u89c6\u56fe\u8bed\u4e49", "paragraphs": ["pg_stat_database \u89c6\u56fe\u5c06\u5305\u542b\u4e00\u884c\u7528\u4e8e\u96c6\u7c07\u4e2d\u7684\u6bcf\u4e2a\u6570\u636e\u5e93\uff0c\u52a0\u4e00\u884c\u7528\u4e8e\u5171\u4eab\u5bf9\u8c61\uff0c\u663e\u793a\u6570\u636e\u5e93\u8303\u56f4\u7684\u7edf\u8ba1\u4fe1\u606f\u3002"]}, {"title": "\u91c7\u96c6\u4e0e\u91cd\u7f6e\u8bed\u4e49", "paragraphs": ["\u91cd\u7f6e\u8303\u56f4\u548c\u53ef\u89c1\u6027\u8bf7\u53c2\u9605\u4e0b\u65b9\u540c\u7248\u672c\u7684\u7edf\u8ba1\u4fe1\u606f\u6536\u96c6\u4e0e\u89c6\u56fe\u6587\u6863\u3002\u4e0d\u6839\u636e\u5b57\u6bb5\u540d\u79f0\u63a8\u65ad\u5404\u5b57\u6bb5\u7684\u91cd\u7f6e\u89c4\u5219\u3002"]}, {"code": "SELECT blk_read_time FROM pg_catalog.pg_stat_database;", "title": "\u67e5\u770b\u6b64\u5b57\u6bb5", "paragraphs": ["\u793a\u4f8b\u67e5\u8be2\uff1b\u4e0d\u8868\u793a\u5df2\u6267\u884c\uff0c\u4e5f\u4e0d\u63d0\u4f9b\u5b9e\u6d4b\u503c\u3002"]}], "source_only": false, "localization": {"status": "complete", "sources": [{"url": "/docs/19/monitoring-stats.html", "method": "same-major semantic node", "sha256": "024434288428f15560d48c78af2e836ca669a4217589cfaeb2f16b72123b501a", "language": "zh", "matched_nodes": ["#MONITORING-STATS/div[23]/div[3]/div[1]/table[0]/tbody[2]/tr[18]/td[0]/p[1]", "#MONITORING-STATS/div[23]/p[2]"]}], "language": "zh", "original_text": {"/versions/19/description/0": "Time spent reading data file blocks by backends in this database, in milliseconds (if track_io_timing is enabled, otherwise zero)", "/versions/19/facts/0/label": "View", "/versions/19/facts/1/label": "Field", "/versions/19/facts/2/label": "SQL type", "/versions/19/facts/3/label": "Units named in the field definition", "/versions/19/facts/4/label": "Reset observation", "/versions/19/facts/4/value": "Time at which these statistics were last reset", "/versions/19/related/0/label": "pg_stat_database columns", "/versions/19/related/1/label": "Statistics collection and reset functions", "/versions/19/sections/0/title": "View semantics", "/versions/19/sections/1/title": "Collection and reset context", "/versions/19/sections/2/title": "Inspect this field", "/versions/19/sections/0/paragraphs/0": "The pg_stat_database view will contain one row for each database in the cluster, plus one for shared objects, showing database-wide statistics.", "/versions/19/sections/1/paragraphs/0": "Read the same-version statistics collection and view documentation below for reset scope and visibility. No per-field reset rule is inferred from the field name.", "/versions/19/sections/2/paragraphs/0": "Example query; no execution result or measured value is asserted."}, "fallback_fields": [], "source_language": "en", "original_snapshot_sha256": "ec0dd8b026f4d352f93a81688ae74c6dcf29510c3561b483a5e74c07ea3a37b2", "canonical_center_text_hash": "f1663096f3e7dd2998c4cbbe9b84130ef65ecd1e8877a09d6632961a0a44510d"}, "description_zh": "\u5728\u8fd9\u4e2a\u6570\u636e\u5e93\u4e2d\u901a\u8fc7\u540e\u7aef\u8bfb\u53d6\u6570\u636e\u6587\u4ef6\u5757\u6240\u82b1\u8d39\u7684\u65f6\u95f4\uff0c\u4ee5\u6beb\u79d2\u4e3a\u5355\u4f4d\uff08\u5982\u679c\u542f\u7528\u4e86 track_io_timing\uff0c\u5426\u5219\u4e3a\u96f6\uff09", "comparison_data": {"view": "pg_stat_database", "field": "blk_read_time", "sql_type": "double precision", "units_mentioned": ["blocks", "milliseconds"]}, "comparison_hash": "c28bef2f31d56d506979b87f818489284f8c0a9025ea0ad48c4886b39bdc6456", "manual_language": "zh", "units_mentioned": ["blocks", "milliseconds"], "description_zh_html": "<p>pg_stat_database.blk_read_time \u7edf\u8ba1\u5b57\u6bb5\u3002</p><dl><dt>\u89c6\u56fe</dt><dd><code>pg_stat_database</code></dd><dt>\u5b57\u6bb5</dt><dd><code>blk_read_time</code></dd><dt>SQL \u7c7b\u578b</dt><dd><code>double precision</code></dd></dl><h3>\u540c\u7248\u672c\u4e2d\u6587\u624b\u518c\u5b9a\u4e49</h3><p>\u5728\u8fd9\u4e2a\u6570\u636e\u5e93\u4e2d\u901a\u8fc7\u540e\u7aef\u8bfb\u53d6\u6570\u636e\u6587\u4ef6\u5757\u6240\u82b1\u8d39\u7684\u65f6\u95f4\uff0c\u4ee5\u6beb\u79d2\u4e3a\u5355\u4f4d\uff08\u5982\u679c\u542f\u7528\u4e86 track_io_timing\uff0c\u5426\u5219\u4e3a\u96f6\uff09</p><p><a href=\"/zh/docs/19/monitoring-stats.html\" 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": "documented field type and description, source-only view expressions", "source_revision": "af105fc8e960fc836a09fc2cd7f582b49fd17675d9d36631abe3a565bfd7d701", "previous_source_revision": "83157ee9c599d03b2f7a3d73ef3a56ec24e0e79cc2b3501a64d1364f56398c86"}}, "20": {"view": "pg_stat_database", "facts": [{"label": "\u89c6\u56fe", "value": "pg_stat_database"}, {"label": "\u5b57\u6bb5", "value": "blk_read_time"}, {"label": "SQL \u7c7b\u578b", "value": "double precision"}, {"label": "\u5b57\u6bb5\u5b9a\u4e49\u8bb0\u8f7d\u7684\u5355\u4f4d", "value": "blocks, milliseconds"}, {"label": "\u91cd\u7f6e\u6761\u4ef6", "value": "\u8fd9\u4e9b\u7edf\u8ba1\u4e0a\u6b21\u91cd\u7f6e\u7684\u65f6\u95f4"}], "field": "blk_read_time", "tables": [], "related": [{"url": "/wiki/catalog/pg_stat_database/?v=20", "label": "pg_stat_database \u5b57\u6bb5"}, {"url": "/docs/devel/monitoring-stats.html", "label": "\u7edf\u8ba1\u6536\u96c6\u4e0e\u91cd\u7f6e\u51fd\u6570"}], "release": {"ref": "https://ftp.postgresql.org/pub/snapshot/dev/postgresql-snapshot.tar.bz2", "label": "20devel", "major": "20", "channel": "devel", "revision": "49c73aa4c9cacef8ca979276a28ac416c08e9e54c9baee4ae5fd116a35fa13ac", "source_sha256": "49c73aa4c9cacef8ca979276a28ac416c08e9e54c9baee4ae5fd116a35fa13ac", "manual_fingerprint": "4afd3a8e29953000e176877e161458a2febaeaac5a5e16986595d3acc2418c7d", "catalog_fingerprint": "e519e6916a731ce8fb9bca3edb12410227f73e01ccd43fb6f5fb98276f08985f"}, "sources": [{"url": "/docs/devel/monitoring-stats.html#PG-STAT-DATABASE-VIEW", "path": "monitoring-stats.html", "label": "PostgreSQL 20 English manual", "sha256": "12af0ae255e3b04952990efae8e4e9d07926556da23734d34f43b9a37126c84f"}], "zh_from": {"kind": "same-version-chinese-manual-with-source-derived-structured-summary", "manual": {"url": "/zh/docs/devel/monitoring-stats.html#", "anchor": "", "column": "blk_read_time", "locale": "zh-Hans", "version": "20", "build_id": 111, "page_key": "monitoring-stats.html", "extraction": "exact-catalog-field", "source_hash": "2c8d45a2fe11aec2ee727b94ac68e60b7a0523a1aa2d43629f9368d42f544d40", "source_revision": "sha256:49c73aa4c9cacef8ca979276a28ac416c08e9e54c9baee4ae5fd116a35fa13ac", "translation_revision": "git:b1b500221dbe5437cfca004d6b04d3f6e422765d;html-sha256:98c980963b401d40bd50df72b909e7523e3148b8fdb48edd897de2efb67e5235"}, "body_sha256": "6b6206ceaf7259c3286e2f9876eb27d5df5d13934bcb35d78c1ff306e7199b30", "runtime_rerun": false, "authored_translation": "source-derived-structured-summary", "source_facts_revision": "49c73aa4c9cacef8ca979276a28ac416c08e9e54c9baee4ae5fd116a35fa13ac"}, "facts_zh": [{"label": "\u89c6\u56fe", "value": "pg_stat_database"}, {"label": "\u5b57\u6bb5", "value": "blk_read_time"}, {"label": "SQL \u7c7b\u578b", "value": "double precision"}, {"label": "\u5b57\u6bb5\u5b9a\u4e49\u8bb0\u8f7d\u7684\u5355\u4f4d", "value": "blocks, milliseconds"}, {"label": "\u91cd\u7f6e\u6761\u4ef6", "value": "\u8fd9\u4e9b\u7edf\u8ba1\u4e0a\u6b21\u91cd\u7f6e\u7684\u65f6\u95f4"}], "sections": [{"title": "\u89c6\u56fe\u8bed\u4e49", "paragraphs": ["pg_stat_database \u89c6\u56fe\u5c06\u5305\u542b\u4e00\u884c\u7528\u4e8e\u96c6\u7c07\u4e2d\u7684\u6bcf\u4e2a\u6570\u636e\u5e93\uff0c\u52a0\u4e00\u884c\u7528\u4e8e\u5171\u4eab\u5bf9\u8c61\uff0c\u663e\u793a\u6570\u636e\u5e93\u8303\u56f4\u7684\u7edf\u8ba1\u4fe1\u606f\u3002"]}, {"title": "\u91c7\u96c6\u4e0e\u91cd\u7f6e\u8bed\u4e49", "paragraphs": ["\u91cd\u7f6e\u8303\u56f4\u548c\u53ef\u89c1\u6027\u8bf7\u53c2\u9605\u4e0b\u65b9\u540c\u7248\u672c\u7684\u7edf\u8ba1\u4fe1\u606f\u6536\u96c6\u4e0e\u89c6\u56fe\u6587\u6863\u3002\u4e0d\u6839\u636e\u5b57\u6bb5\u540d\u79f0\u63a8\u65ad\u5404\u5b57\u6bb5\u7684\u91cd\u7f6e\u89c4\u5219\u3002"]}, {"code": "SELECT blk_read_time FROM pg_catalog.pg_stat_database;", "title": "\u67e5\u770b\u6b64\u5b57\u6bb5", "paragraphs": ["\u793a\u4f8b\u67e5\u8be2\uff1b\u4e0d\u8868\u793a\u5df2\u6267\u884c\uff0c\u4e5f\u4e0d\u63d0\u4f9b\u5b9e\u6d4b\u503c\u3002"]}], "sql_type": "double precision", "center_zh": {"title": "pg_stat_database.blk_read_time", "locale": "zh-Hans", "source": {"key": "pg_stat_database-blk_read_time", "locale": "zh-Hans", "version": "20", "text_hash": "f8af943ed48bfbaf52c32afa3dcc0ebe1b0896e9c5ca7da15ac54b6e1837fe43", "collection": "metric", "dataset_hash": "7c31b524dfe136022d39a6ae8dcfac6b3bbd5f8fdaf422536599981252aff0c9", "source_database": "center", "source_revision": "49c73aa4c9cacef8ca979276a28ac416c08e9e54c9baee4ae5fd116a35fa13ac"}, "payload": {"facts": [{"label": "\u89c6\u56fe", "value": "pg_stat_database"}, {"label": "\u5b57\u6bb5", "value": "blk_read_time"}, {"label": "SQL \u7c7b\u578b", "value": "double precision"}, {"label": "\u5b57\u6bb5\u5b9a\u4e49\u8bb0\u8f7d\u7684\u5355\u4f4d", "value": "blocks, milliseconds"}, {"label": "\u91cd\u7f6e\u6761\u4ef6", "value": "\u8fd9\u4e9b\u7edf\u8ba1\u4e0a\u6b21\u91cd\u7f6e\u7684\u65f6\u95f4"}], "tables": [], "zh_from": {"kind": "same-version-chinese-manual-with-source-derived-structured-summary", "manual": {"url": "/zh/docs/devel/monitoring-stats.html#", "anchor": "", "column": "blk_read_time", "locale": "zh-Hans", "version": "20", "build_id": 111, "page_key": "monitoring-stats.html", "extraction": "exact-catalog-field", "source_hash": "2c8d45a2fe11aec2ee727b94ac68e60b7a0523a1aa2d43629f9368d42f544d40", "source_revision": "sha256:49c73aa4c9cacef8ca979276a28ac416c08e9e54c9baee4ae5fd116a35fa13ac", "translation_revision": "git:b1b500221dbe5437cfca004d6b04d3f6e422765d;html-sha256:98c980963b401d40bd50df72b909e7523e3148b8fdb48edd897de2efb67e5235"}, "body_sha256": "6b6206ceaf7259c3286e2f9876eb27d5df5d13934bcb35d78c1ff306e7199b30", "runtime_rerun": false, "authored_translation": "source-derived-structured-summary", "source_facts_revision": "49c73aa4c9cacef8ca979276a28ac416c08e9e54c9baee4ae5fd116a35fa13ac"}, "sections": [{"title": "\u89c6\u56fe\u8bed\u4e49", "paragraphs": ["pg_stat_database \u89c6\u56fe\u5c06\u5305\u542b\u4e00\u884c\u7528\u4e8e\u96c6\u7c07\u4e2d\u7684\u6bcf\u4e2a\u6570\u636e\u5e93\uff0c\u52a0\u4e00\u884c\u7528\u4e8e\u5171\u4eab\u5bf9\u8c61\uff0c\u663e\u793a\u6570\u636e\u5e93\u8303\u56f4\u7684\u7edf\u8ba1\u4fe1\u606f\u3002"]}, {"title": "\u91c7\u96c6\u4e0e\u91cd\u7f6e\u8bed\u4e49", "paragraphs": ["\u91cd\u7f6e\u8303\u56f4\u548c\u53ef\u89c1\u6027\u8bf7\u53c2\u9605\u4e0b\u65b9\u540c\u7248\u672c\u7684\u7edf\u8ba1\u4fe1\u606f\u6536\u96c6\u4e0e\u89c6\u56fe\u6587\u6863\u3002\u4e0d\u6839\u636e\u5b57\u6bb5\u540d\u79f0\u63a8\u65ad\u5404\u5b57\u6bb5\u7684\u91cd\u7f6e\u89c4\u5219\u3002"]}, {"code": "SELECT blk_read_time FROM pg_catalog.pg_stat_database;", "title": "\u67e5\u770b\u6b64\u5b57\u6bb5", "paragraphs": ["\u793a\u4f8b\u67e5\u8be2\uff1b\u4e0d\u8868\u793a\u5df2\u6267\u884c\uff0c\u4e5f\u4e0d\u63d0\u4f9b\u5b9e\u6d4b\u503c\u3002"]}], "description_zh": "\u5728\u8fd9\u4e2a\u6570\u636e\u5e93\u4e2d\u901a\u8fc7\u540e\u7aef\u8bfb\u53d6\u6570\u636e\u6587\u4ef6\u5757\u6240\u82b1\u8d39\u7684\u65f6\u95f4\uff0c\u4ee5\u6beb\u79d2\u4e3a\u5355\u4f4d\uff08\u5982\u679c\u542f\u7528\u4e86 track_io_timing\uff0c\u5426\u5219\u4e3a\u96f6\uff09", "description_zh_html": "<p>pg_stat_database.blk_read_time \u7edf\u8ba1\u5b57\u6bb5\u3002</p><dl><dt>\u89c6\u56fe</dt><dd><code>pg_stat_database</code></dd><dt>\u5b57\u6bb5</dt><dd><code>blk_read_time</code></dd><dt>SQL \u7c7b\u578b</dt><dd><code>double precision</code></dd></dl><h3>\u540c\u7248\u672c\u4e2d\u6587\u624b\u518c\u5b9a\u4e49</h3><p>\u5728\u8fd9\u4e2a\u6570\u636e\u5e93\u4e2d\u901a\u8fc7\u540e\u7aef\u8bfb\u53d6\u6570\u636e\u6587\u4ef6\u5757\u6240\u82b1\u8d39\u7684\u65f6\u95f4\uff0c\u4ee5\u6beb\u79d2\u4e3a\u5355\u4f4d\uff08\u5982\u679c\u542f\u7528\u4e86 track_io_timing\uff0c\u5426\u5219\u4e3a\u96f6\uff09</p><p><a href=\"/zh/docs/devel/monitoring-stats.html#\">\u67e5\u770b\u5b8c\u6574\u4e2d\u6587\u624b\u518c\u4e0e\u4e0a\u4e0b\u6587</a>\u3002</p>"}, "summary": "\u5728\u8fd9\u4e2a\u6570\u636e\u5e93\u4e2d\u901a\u8fc7\u540e\u7aef\u8bfb\u53d6\u6570\u636e\u6587\u4ef6\u5757\u6240\u82b1\u8d39\u7684\u65f6\u95f4\uff0c\u4ee5\u6beb\u79d2\u4e3a\u5355\u4f4d\uff08\u5982\u679c\u542f\u7528\u4e86 track_io_timing\uff0c\u5426\u5219\u4e3a\u96f6\uff09", "version": "20", "link_map": {"/zh/docs/devel/monitoring-stats.html": "/docs/devel/monitoring-stats.html"}, "body_html": "<p>pg_stat_database.blk_read_time \u7edf\u8ba1\u5b57\u6bb5\u3002</p><dl><dt>\u89c6\u56fe</dt><dd><code>pg_stat_database</code></dd><dt>\u5b57\u6bb5</dt><dd><code>blk_read_time</code></dd><dt>SQL \u7c7b\u578b</dt><dd><code>double precision</code></dd></dl><h3>\u540c\u7248\u672c\u4e2d\u6587\u624b\u518c\u5b9a\u4e49</h3><p>\u5728\u8fd9\u4e2a\u6570\u636e\u5e93\u4e2d\u901a\u8fc7\u540e\u7aef\u8bfb\u53d6\u6570\u636e\u6587\u4ef6\u5757\u6240\u82b1\u8d39\u7684\u65f6\u95f4\uff0c\u4ee5\u6beb\u79d2\u4e3a\u5355\u4f4d\uff08\u5982\u679c\u542f\u7528\u4e86 track_io_timing\uff0c\u5426\u5219\u4e3a\u96f6\uff09</p><p><a href=\"/zh/docs/devel/monitoring-stats.html\" rel=\"nofollow\">\u67e5\u770b\u5b8c\u6574\u4e2d\u6587\u624b\u518c\u4e0e\u4e0a\u4e0b\u6587</a>\u3002</p>", "body_sha256": "15c55b0fd2870286005aeeaee103377d1eb6de392185feb0e2b1887ccfd409ee", "content_hash": "f8af943ed48bfbaf52c32afa3dcc0ebe1b0896e9c5ca7da15ac54b6e1837fe43", "source_database": "center", "source_revision": "49c73aa4c9cacef8ca979276a28ac416c08e9e54c9baee4ae5fd116a35fa13ac"}, "signature": "SELECT blk_read_time FROM pg_catalog.pg_stat_database;", "tables_zh": [], "documented": true, "description": ["\u5728\u8fd9\u4e2a\u6570\u636e\u5e93\u4e2d\u901a\u8fc7\u540e\u7aef\u8bfb\u53d6\u6570\u636e\u6587\u4ef6\u5757\u6240\u82b1\u8d39\u7684\u65f6\u95f4\uff0c\u4ee5\u6beb\u79d2\u4e3a\u5355\u4f4d\uff08\u5982\u679c\u542f\u7528\u4e86 track_io_timing\uff0c\u5426\u5219\u4e3a\u96f6\uff09"], "manual_html": "", "manual_path": "/docs/devel/monitoring-stats.html", "sections_zh": [{"title": "\u89c6\u56fe\u8bed\u4e49", "paragraphs": ["pg_stat_database \u89c6\u56fe\u5c06\u5305\u542b\u4e00\u884c\u7528\u4e8e\u96c6\u7c07\u4e2d\u7684\u6bcf\u4e2a\u6570\u636e\u5e93\uff0c\u52a0\u4e00\u884c\u7528\u4e8e\u5171\u4eab\u5bf9\u8c61\uff0c\u663e\u793a\u6570\u636e\u5e93\u8303\u56f4\u7684\u7edf\u8ba1\u4fe1\u606f\u3002"]}, {"title": "\u91c7\u96c6\u4e0e\u91cd\u7f6e\u8bed\u4e49", "paragraphs": ["\u91cd\u7f6e\u8303\u56f4\u548c\u53ef\u89c1\u6027\u8bf7\u53c2\u9605\u4e0b\u65b9\u540c\u7248\u672c\u7684\u7edf\u8ba1\u4fe1\u606f\u6536\u96c6\u4e0e\u89c6\u56fe\u6587\u6863\u3002\u4e0d\u6839\u636e\u5b57\u6bb5\u540d\u79f0\u63a8\u65ad\u5404\u5b57\u6bb5\u7684\u91cd\u7f6e\u89c4\u5219\u3002"]}, {"code": "SELECT blk_read_time FROM pg_catalog.pg_stat_database;", "title": "\u67e5\u770b\u6b64\u5b57\u6bb5", "paragraphs": ["\u793a\u4f8b\u67e5\u8be2\uff1b\u4e0d\u8868\u793a\u5df2\u6267\u884c\uff0c\u4e5f\u4e0d\u63d0\u4f9b\u5b9e\u6d4b\u503c\u3002"]}], "source_only": false, "localization": {"status": "complete", "sources": [{"url": "/docs/devel/monitoring-stats.html", "method": "same-major semantic node", "sha256": "1d9a086fb4c6fdd9a56d3a7a28e8c164354ef0bf50c402f06ebe174538f96a4f", "language": "zh", "matched_nodes": ["#MONITORING-STATS/div[24]/div[3]/div[1]/table[0]/tbody[2]/tr[18]/td[0]/p[1]", "#MONITORING-STATS/div[24]/p[2]"]}], "language": "zh", "original_text": {"/summary": "Time spent reading data file blocks by backends in this database, in milliseconds (if track_io_timing is enabled, otherwise zero)", "/versions/20/description/0": "Time spent reading data file blocks by backends in this database, in milliseconds (if track_io_timing is enabled, otherwise zero)", "/versions/20/facts/0/label": "View", "/versions/20/facts/1/label": "Field", "/versions/20/facts/2/label": "SQL type", "/versions/20/facts/3/label": "Units named in the field definition", "/versions/20/facts/4/label": "Reset observation", "/versions/20/facts/4/value": "Time at which these statistics were last reset", "/versions/20/related/0/label": "pg_stat_database columns", "/versions/20/related/1/label": "Statistics collection and reset functions", "/versions/20/sections/0/title": "View semantics", "/versions/20/sections/1/title": "Collection and reset context", "/versions/20/sections/2/title": "Inspect this field", "/versions/20/sections/0/paragraphs/0": "The pg_stat_database view will contain one row for each database in the cluster, plus one for shared objects, showing database-wide statistics.", "/versions/20/sections/1/paragraphs/0": "Read the same-version statistics collection and view documentation below for reset scope and visibility. No per-field reset rule is inferred from the field name.", "/versions/20/sections/2/paragraphs/0": "Example query; no execution result or measured value is asserted."}, "fallback_fields": [], "source_language": "en", "original_snapshot_sha256": "09120459f9fe68fa1b70f78306d9ec2e41ee4dbef9ed961f2dd2a67c3357e7c3", "canonical_center_text_hash": "f8af943ed48bfbaf52c32afa3dcc0ebe1b0896e9c5ca7da15ac54b6e1837fe43"}, "description_zh": "\u5728\u8fd9\u4e2a\u6570\u636e\u5e93\u4e2d\u901a\u8fc7\u540e\u7aef\u8bfb\u53d6\u6570\u636e\u6587\u4ef6\u5757\u6240\u82b1\u8d39\u7684\u65f6\u95f4\uff0c\u4ee5\u6beb\u79d2\u4e3a\u5355\u4f4d\uff08\u5982\u679c\u542f\u7528\u4e86 track_io_timing\uff0c\u5426\u5219\u4e3a\u96f6\uff09", "comparison_data": {"view": "pg_stat_database", "field": "blk_read_time", "sql_type": "double precision", "units_mentioned": ["blocks", "milliseconds"]}, "comparison_hash": "c28bef2f31d56d506979b87f818489284f8c0a9025ea0ad48c4886b39bdc6456", "manual_language": "zh", "units_mentioned": ["blocks", "milliseconds"], "description_zh_html": "<p>pg_stat_database.blk_read_time \u7edf\u8ba1\u5b57\u6bb5\u3002</p><dl><dt>\u89c6\u56fe</dt><dd><code>pg_stat_database</code></dd><dt>\u5b57\u6bb5</dt><dd><code>blk_read_time</code></dd><dt>SQL \u7c7b\u578b</dt><dd><code>double precision</code></dd></dl><h3>\u540c\u7248\u672c\u4e2d\u6587\u624b\u518c\u5b9a\u4e49</h3><p>\u5728\u8fd9\u4e2a\u6570\u636e\u5e93\u4e2d\u901a\u8fc7\u540e\u7aef\u8bfb\u53d6\u6570\u636e\u6587\u4ef6\u5757\u6240\u82b1\u8d39\u7684\u65f6\u95f4\uff0c\u4ee5\u6beb\u79d2\u4e3a\u5355\u4f4d\uff08\u5982\u679c\u542f\u7528\u4e86 track_io_timing\uff0c\u5426\u5219\u4e3a\u96f6\uff09</p><p><a href=\"/zh/docs/devel/monitoring-stats.html\" 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": "documented field type and description, source-only view expressions", "source_revision": "49c73aa4c9cacef8ca979276a28ac416c08e9e54c9baee4ae5fd116a35fa13ac", "previous_source_revision": "4d3346909b201ac1648232cf290462a7070c119326f56196f1f0253ed80fae41"}}}}, "snapshot": {"view": "pg_stat_database", "facts": [{"label": "\u89c6\u56fe", "value": "pg_stat_database"}, {"label": "\u5b57\u6bb5", "value": "blk_read_time"}, {"label": "SQL \u7c7b\u578b", "value": "double precision"}, {"label": "\u5b57\u6bb5\u5b9a\u4e49\u8bb0\u8f7d\u7684\u5355\u4f4d", "value": "blocks, milliseconds"}, {"label": "\u91cd\u7f6e\u6761\u4ef6", "value": "\u8fd9\u4e9b\u7edf\u8ba1\u4e0a\u6b21\u91cd\u7f6e\u7684\u65f6\u95f4"}], "field": "blk_read_time", "tables": [], "related": [{"url": "/wiki/catalog/pg_stat_database/?v=18", "label": "pg_stat_database \u5b57\u6bb5"}, {"url": "/docs/18/monitoring-stats.html", "label": "\u7edf\u8ba1\u6536\u96c6\u4e0e\u91cd\u7f6e\u51fd\u6570"}], "release": {"ref": "https://ftp.postgresql.org/pub/source/v18.6/postgresql-18.6.tar.bz2", "label": "18.6", "major": "18", "channel": "stable", "revision": "555610c24d53e4316da5b7d3fc25c279d96856d5e0e23ee308c328c5fa881d9f"}, "sources": [{"url": "/docs/18/monitoring-stats.html#PG-STAT-DATABASE-VIEW", "path": "monitoring-stats.html", "label": "PostgreSQL 18 English manual", "sha256": "aa979eed08627fbf715a9d792094a162a73671db5af810f3ab2aad3e073d5722"}], "zh_from": {"kind": "same-version-chinese-manual-with-source-derived-structured-summary", "manual": {"url": "/zh/docs/18/monitoring-stats.html#", "anchor": "", "column": "blk_read_time", "locale": "zh-Hans", "version": "18", "build_id": 107, "page_key": "monitoring-stats.html", "extraction": "exact-catalog-field", "source_hash": "0274aac7991450316bcf7be44635653b6d896fb00e321242c1b6674cb05c2e53", "source_revision": "unknown:rendered-translation-baseline", "translation_revision": "git:b1b500221dbe5437cfca004d6b04d3f6e422765d;html-sha256:08e987a66af27b98444a8057c256314eafa13611a3fb9e888214fc436824244b"}, "body_sha256": "370d5139b1fe3ec1e03f1395dd729977bc7a43526c13f8174423ef198aecdfcd", "runtime_rerun": false, "authored_translation": "source-derived-structured-summary", "source_facts_revision": "555610c24d53e4316da5b7d3fc25c279d96856d5e0e23ee308c328c5fa881d9f"}, "facts_zh": [{"label": "\u89c6\u56fe", "value": "pg_stat_database"}, {"label": "\u5b57\u6bb5", "value": "blk_read_time"}, {"label": "SQL \u7c7b\u578b", "value": "double precision"}, {"label": "\u5b57\u6bb5\u5b9a\u4e49\u8bb0\u8f7d\u7684\u5355\u4f4d", "value": "blocks, milliseconds"}, {"label": "\u91cd\u7f6e\u6761\u4ef6", "value": "\u8fd9\u4e9b\u7edf\u8ba1\u4e0a\u6b21\u91cd\u7f6e\u7684\u65f6\u95f4"}], "sections": [{"title": "\u89c6\u56fe\u8bed\u4e49", "paragraphs": ["pg_stat_database \u89c6\u56fe\u5c06\u5305\u542b\u4e00\u884c\u7528\u4e8e\u96c6\u7c07\u4e2d\u7684\u6bcf\u4e2a\u6570\u636e\u5e93\uff0c\u52a0\u4e00\u884c\u7528\u4e8e\u5171\u4eab\u5bf9\u8c61\uff0c\u663e\u793a\u6570\u636e\u5e93\u8303\u56f4\u7684\u7edf\u8ba1\u4fe1\u606f\u3002"]}, {"title": "\u91c7\u96c6\u4e0e\u91cd\u7f6e\u8bed\u4e49", "paragraphs": ["\u91cd\u7f6e\u8303\u56f4\u548c\u53ef\u89c1\u6027\u8bf7\u53c2\u9605\u4e0b\u65b9\u540c\u7248\u672c\u7684\u7edf\u8ba1\u4fe1\u606f\u6536\u96c6\u4e0e\u89c6\u56fe\u6587\u6863\u3002\u4e0d\u6839\u636e\u5b57\u6bb5\u540d\u79f0\u63a8\u65ad\u5404\u5b57\u6bb5\u7684\u91cd\u7f6e\u89c4\u5219\u3002"]}, {"code": "SELECT blk_read_time FROM pg_catalog.pg_stat_database;", "title": "\u67e5\u770b\u6b64\u5b57\u6bb5", "paragraphs": ["\u793a\u4f8b\u67e5\u8be2\uff1b\u4e0d\u8868\u793a\u5df2\u6267\u884c\uff0c\u4e5f\u4e0d\u63d0\u4f9b\u5b9e\u6d4b\u503c\u3002"]}], "sql_type": "double precision", "center_zh": {"title": "pg_stat_database.blk_read_time", "locale": "zh-Hans", "source": {"key": "pg_stat_database-blk_read_time", "locale": "zh-Hans", "version": "18", "text_hash": "b6cc01de3bb7bacd0b3dd65d141fc460df8eee341d3104a8039bbf25b3182527", "collection": "metric", "dataset_hash": "7c31b524dfe136022d39a6ae8dcfac6b3bbd5f8fdaf422536599981252aff0c9", "source_database": "center", "source_revision": "555610c24d53e4316da5b7d3fc25c279d96856d5e0e23ee308c328c5fa881d9f"}, "payload": {"facts": [{"label": "\u89c6\u56fe", "value": "pg_stat_database"}, {"label": "\u5b57\u6bb5", "value": "blk_read_time"}, {"label": "SQL \u7c7b\u578b", "value": "double precision"}, {"label": "\u5b57\u6bb5\u5b9a\u4e49\u8bb0\u8f7d\u7684\u5355\u4f4d", "value": "blocks, milliseconds"}, {"label": "\u91cd\u7f6e\u6761\u4ef6", "value": "\u8fd9\u4e9b\u7edf\u8ba1\u4e0a\u6b21\u91cd\u7f6e\u7684\u65f6\u95f4"}], "tables": [], "zh_from": {"kind": "same-version-chinese-manual-with-source-derived-structured-summary", "manual": {"url": "/zh/docs/18/monitoring-stats.html#", "anchor": "", "column": "blk_read_time", "locale": "zh-Hans", "version": "18", "build_id": 107, "page_key": "monitoring-stats.html", "extraction": "exact-catalog-field", "source_hash": "0274aac7991450316bcf7be44635653b6d896fb00e321242c1b6674cb05c2e53", "source_revision": "unknown:rendered-translation-baseline", "translation_revision": "git:b1b500221dbe5437cfca004d6b04d3f6e422765d;html-sha256:08e987a66af27b98444a8057c256314eafa13611a3fb9e888214fc436824244b"}, "body_sha256": "370d5139b1fe3ec1e03f1395dd729977bc7a43526c13f8174423ef198aecdfcd", "runtime_rerun": false, "authored_translation": "source-derived-structured-summary", "source_facts_revision": "555610c24d53e4316da5b7d3fc25c279d96856d5e0e23ee308c328c5fa881d9f"}, "sections": [{"title": "\u89c6\u56fe\u8bed\u4e49", "paragraphs": ["pg_stat_database \u89c6\u56fe\u5c06\u5305\u542b\u4e00\u884c\u7528\u4e8e\u96c6\u7c07\u4e2d\u7684\u6bcf\u4e2a\u6570\u636e\u5e93\uff0c\u52a0\u4e00\u884c\u7528\u4e8e\u5171\u4eab\u5bf9\u8c61\uff0c\u663e\u793a\u6570\u636e\u5e93\u8303\u56f4\u7684\u7edf\u8ba1\u4fe1\u606f\u3002"]}, {"title": "\u91c7\u96c6\u4e0e\u91cd\u7f6e\u8bed\u4e49", "paragraphs": ["\u91cd\u7f6e\u8303\u56f4\u548c\u53ef\u89c1\u6027\u8bf7\u53c2\u9605\u4e0b\u65b9\u540c\u7248\u672c\u7684\u7edf\u8ba1\u4fe1\u606f\u6536\u96c6\u4e0e\u89c6\u56fe\u6587\u6863\u3002\u4e0d\u6839\u636e\u5b57\u6bb5\u540d\u79f0\u63a8\u65ad\u5404\u5b57\u6bb5\u7684\u91cd\u7f6e\u89c4\u5219\u3002"]}, {"code": "SELECT blk_read_time FROM pg_catalog.pg_stat_database;", "title": "\u67e5\u770b\u6b64\u5b57\u6bb5", "paragraphs": ["\u793a\u4f8b\u67e5\u8be2\uff1b\u4e0d\u8868\u793a\u5df2\u6267\u884c\uff0c\u4e5f\u4e0d\u63d0\u4f9b\u5b9e\u6d4b\u503c\u3002"]}], "description_zh": "\u5728\u8fd9\u4e2a\u6570\u636e\u5e93\u4e2d\u901a\u8fc7\u540e\u7aef\u8bfb\u53d6\u6570\u636e\u6587\u4ef6\u5757\u6240\u82b1\u8d39\u7684\u65f6\u95f4\uff0c\u4ee5\u6beb\u79d2\u4e3a\u5355\u4f4d\uff08\u5982\u679c\u542f\u7528\u4e86 track_io_timing\uff0c\u5426\u5219\u4e3a\u96f6\uff09", "description_zh_html": "<p>pg_stat_database.blk_read_time \u7edf\u8ba1\u5b57\u6bb5\u3002</p><dl><dt>\u89c6\u56fe</dt><dd><code>pg_stat_database</code></dd><dt>\u5b57\u6bb5</dt><dd><code>blk_read_time</code></dd><dt>SQL \u7c7b\u578b</dt><dd><code>double precision</code></dd></dl><h3>\u540c\u7248\u672c\u4e2d\u6587\u624b\u518c\u5b9a\u4e49</h3><p>\u5728\u8fd9\u4e2a\u6570\u636e\u5e93\u4e2d\u901a\u8fc7\u540e\u7aef\u8bfb\u53d6\u6570\u636e\u6587\u4ef6\u5757\u6240\u82b1\u8d39\u7684\u65f6\u95f4\uff0c\u4ee5\u6beb\u79d2\u4e3a\u5355\u4f4d\uff08\u5982\u679c\u542f\u7528\u4e86 track_io_timing\uff0c\u5426\u5219\u4e3a\u96f6\uff09</p><p><a href=\"/zh/docs/18/monitoring-stats.html#\">\u67e5\u770b\u5b8c\u6574\u4e2d\u6587\u624b\u518c\u4e0e\u4e0a\u4e0b\u6587</a>\u3002</p>"}, "summary": "\u5728\u8fd9\u4e2a\u6570\u636e\u5e93\u4e2d\u901a\u8fc7\u540e\u7aef\u8bfb\u53d6\u6570\u636e\u6587\u4ef6\u5757\u6240\u82b1\u8d39\u7684\u65f6\u95f4\uff0c\u4ee5\u6beb\u79d2\u4e3a\u5355\u4f4d\uff08\u5982\u679c\u542f\u7528\u4e86 track_io_timing\uff0c\u5426\u5219\u4e3a\u96f6\uff09", "version": "18", "link_map": {"/zh/docs/18/monitoring-stats.html": "/docs/18/monitoring-stats.html"}, "body_html": "<p>pg_stat_database.blk_read_time \u7edf\u8ba1\u5b57\u6bb5\u3002</p><dl><dt>\u89c6\u56fe</dt><dd><code>pg_stat_database</code></dd><dt>\u5b57\u6bb5</dt><dd><code>blk_read_time</code></dd><dt>SQL \u7c7b\u578b</dt><dd><code>double precision</code></dd></dl><h3>\u540c\u7248\u672c\u4e2d\u6587\u624b\u518c\u5b9a\u4e49</h3><p>\u5728\u8fd9\u4e2a\u6570\u636e\u5e93\u4e2d\u901a\u8fc7\u540e\u7aef\u8bfb\u53d6\u6570\u636e\u6587\u4ef6\u5757\u6240\u82b1\u8d39\u7684\u65f6\u95f4\uff0c\u4ee5\u6beb\u79d2\u4e3a\u5355\u4f4d\uff08\u5982\u679c\u542f\u7528\u4e86 track_io_timing\uff0c\u5426\u5219\u4e3a\u96f6\uff09</p><p><a href=\"/zh/docs/18/monitoring-stats.html\" rel=\"nofollow\">\u67e5\u770b\u5b8c\u6574\u4e2d\u6587\u624b\u518c\u4e0e\u4e0a\u4e0b\u6587</a>\u3002</p>", "body_sha256": "9a4d0d1858839f588e1ef2bf313800291fc0d85f2e078d461888f8015af3afa4", "content_hash": "b6cc01de3bb7bacd0b3dd65d141fc460df8eee341d3104a8039bbf25b3182527", "source_database": "center", "source_revision": "555610c24d53e4316da5b7d3fc25c279d96856d5e0e23ee308c328c5fa881d9f"}, "signature": "SELECT blk_read_time FROM pg_catalog.pg_stat_database;", "tables_zh": [], "documented": true, "description": ["\u5728\u8fd9\u4e2a\u6570\u636e\u5e93\u4e2d\u901a\u8fc7\u540e\u7aef\u8bfb\u53d6\u6570\u636e\u6587\u4ef6\u5757\u6240\u82b1\u8d39\u7684\u65f6\u95f4\uff0c\u4ee5\u6beb\u79d2\u4e3a\u5355\u4f4d\uff08\u5982\u679c\u542f\u7528\u4e86 track_io_timing\uff0c\u5426\u5219\u4e3a\u96f6\uff09"], "manual_html": "", "manual_path": "/docs/18/monitoring-stats.html", "sections_zh": [{"title": "\u89c6\u56fe\u8bed\u4e49", "paragraphs": ["pg_stat_database \u89c6\u56fe\u5c06\u5305\u542b\u4e00\u884c\u7528\u4e8e\u96c6\u7c07\u4e2d\u7684\u6bcf\u4e2a\u6570\u636e\u5e93\uff0c\u52a0\u4e00\u884c\u7528\u4e8e\u5171\u4eab\u5bf9\u8c61\uff0c\u663e\u793a\u6570\u636e\u5e93\u8303\u56f4\u7684\u7edf\u8ba1\u4fe1\u606f\u3002"]}, {"title": "\u91c7\u96c6\u4e0e\u91cd\u7f6e\u8bed\u4e49", "paragraphs": ["\u91cd\u7f6e\u8303\u56f4\u548c\u53ef\u89c1\u6027\u8bf7\u53c2\u9605\u4e0b\u65b9\u540c\u7248\u672c\u7684\u7edf\u8ba1\u4fe1\u606f\u6536\u96c6\u4e0e\u89c6\u56fe\u6587\u6863\u3002\u4e0d\u6839\u636e\u5b57\u6bb5\u540d\u79f0\u63a8\u65ad\u5404\u5b57\u6bb5\u7684\u91cd\u7f6e\u89c4\u5219\u3002"]}, {"code": "SELECT blk_read_time FROM pg_catalog.pg_stat_database;", "title": "\u67e5\u770b\u6b64\u5b57\u6bb5", "paragraphs": ["\u793a\u4f8b\u67e5\u8be2\uff1b\u4e0d\u8868\u793a\u5df2\u6267\u884c\uff0c\u4e5f\u4e0d\u63d0\u4f9b\u5b9e\u6d4b\u503c\u3002"]}], "source_only": false, "localization": {"status": "complete", "sources": [{"url": "/docs/18/monitoring-stats.html", "method": "same-major semantic node", "sha256": "ff0b10c5fb4b75c247e38b7ad0e8a50fa0b6ebaa25e68c8c67a1ca972bda40b1", "language": "zh", "matched_nodes": ["#MONITORING-STATS/div[21]/div[3]/div[1]/table[0]/tbody[2]/tr[18]/td[0]/p[1]", "#MONITORING-STATS/div[21]/p[2]"]}], "language": "zh", "original_text": {"/versions/18/description/0": "Time spent reading data file blocks by backends in this database, in milliseconds (if track_io_timing is enabled, otherwise zero)", "/versions/18/facts/0/label": "View", "/versions/18/facts/1/label": "Field", "/versions/18/facts/2/label": "SQL type", "/versions/18/facts/3/label": "Units named in the field definition", "/versions/18/facts/4/label": "Reset observation", "/versions/18/facts/4/value": "Time at which these statistics were last reset", "/versions/18/related/0/label": "pg_stat_database columns", "/versions/18/related/1/label": "Statistics collection and reset functions", "/versions/18/sections/0/title": "View semantics", "/versions/18/sections/1/title": "Collection and reset context", "/versions/18/sections/2/title": "Inspect this field", "/versions/18/sections/0/paragraphs/0": "The pg_stat_database view will contain one row for each database in the cluster, plus one for shared objects, showing database-wide statistics.", "/versions/18/sections/1/paragraphs/0": "Read the same-version statistics collection and view documentation below for reset scope and visibility. No per-field reset rule is inferred from the field name.", "/versions/18/sections/2/paragraphs/0": "Example query; no execution result or measured value is asserted."}, "fallback_fields": [], "source_language": "en", "original_snapshot_sha256": "442fb942290c0feae056f0b91d98475711170d4d27c7b33808dfcc9fb72d9eb0", "canonical_center_text_hash": "b6cc01de3bb7bacd0b3dd65d141fc460df8eee341d3104a8039bbf25b3182527"}, "description_zh": "\u5728\u8fd9\u4e2a\u6570\u636e\u5e93\u4e2d\u901a\u8fc7\u540e\u7aef\u8bfb\u53d6\u6570\u636e\u6587\u4ef6\u5757\u6240\u82b1\u8d39\u7684\u65f6\u95f4\uff0c\u4ee5\u6beb\u79d2\u4e3a\u5355\u4f4d\uff08\u5982\u679c\u542f\u7528\u4e86 track_io_timing\uff0c\u5426\u5219\u4e3a\u96f6\uff09", "comparison_data": {"view": "pg_stat_database", "field": "blk_read_time", "sql_type": "double precision", "units_mentioned": ["blocks", "milliseconds"]}, "comparison_hash": "c28bef2f31d56d506979b87f818489284f8c0a9025ea0ad48c4886b39bdc6456", "manual_language": "zh", "units_mentioned": ["blocks", "milliseconds"], "description_zh_html": "<p>pg_stat_database.blk_read_time \u7edf\u8ba1\u5b57\u6bb5\u3002</p><dl><dt>\u89c6\u56fe</dt><dd><code>pg_stat_database</code></dd><dt>\u5b57\u6bb5</dt><dd><code>blk_read_time</code></dd><dt>SQL \u7c7b\u578b</dt><dd><code>double precision</code></dd></dl><h3>\u540c\u7248\u672c\u4e2d\u6587\u624b\u518c\u5b9a\u4e49</h3><p>\u5728\u8fd9\u4e2a\u6570\u636e\u5e93\u4e2d\u901a\u8fc7\u540e\u7aef\u8bfb\u53d6\u6570\u636e\u6587\u4ef6\u5757\u6240\u82b1\u8d39\u7684\u65f6\u95f4\uff0c\u4ee5\u6beb\u79d2\u4e3a\u5355\u4f4d\uff08\u5982\u679c\u542f\u7528\u4e86 track_io_timing\uff0c\u5426\u5219\u4e3a\u96f6\uff09</p><p><a href=\"/zh/docs/18/monitoring-stats.html\" rel=\"nofollow\">\u67e5\u770b\u5b8c\u6574\u4e2d\u6587\u624b\u518c\u4e0e\u4e0a\u4e0b\u6587</a>\u3002</p>", "center_zh_rendered": "<p>pg_stat_database.blk_read_time \u7edf\u8ba1\u5b57\u6bb5\u3002</p><dl><dt>\u89c6\u56fe</dt><dd><code>pg_stat_database</code></dd><dt>\u5b57\u6bb5</dt><dd><code>blk_read_time</code></dd><dt>SQL \u7c7b\u578b</dt><dd><code>double precision</code></dd></dl><h3>\u540c\u7248\u672c\u4e2d\u6587\u624b\u518c\u5b9a\u4e49</h3><p>\u5728\u8fd9\u4e2a\u6570\u636e\u5e93\u4e2d\u901a\u8fc7\u540e\u7aef\u8bfb\u53d6\u6570\u636e\u6587\u4ef6\u5757\u6240\u82b1\u8d39\u7684\u65f6\u95f4\uff0c\u4ee5\u6beb\u79d2\u4e3a\u5355\u4f4d\uff08\u5982\u679c\u542f\u7528\u4e86 track_io_timing\uff0c\u5426\u5219\u4e3a\u96f6\uff09</p><p><a href=\"/docs/18/monitoring-stats.html\">\u67e5\u770b\u5b8c\u6574\u4e2d\u6587\u624b\u518c\u4e0e\u4e0a\u4e0b\u6587</a>\u3002</p>"}, "comparison": {"left": "17", "right": "18", "status": "unchanged", "diff": ""}}