{"kind": "metric", "major": "18", "item": {"slug": "pg_stat_activity-leader_pid", "name": "pg_stat_activity.leader_pid", "name_zh": "", "category": "pg_stat_activity", "summary": "\u5982\u679c\u8be5\u8fdb\u7a0b\u662f\u5e76\u884c\u67e5\u8be2\u5de5\u4f5c\u8fdb\u7a0b\uff0c\u5219\u4e3a\u5e76\u884c\u7ec4\u9886\u5bfc\u8005\u7684\u8fdb\u7a0b ID\uff1b\u5982\u679c\u8be5\u8fdb\u7a0b\u662f\u5e76\u884c\u5e94\u7528\u5de5\u4f5c\u8fdb\u7a0b\uff0c\u5219\u4e3a\u9886\u5bfc\u8005\u5e94\u7528\u5de5\u4f5c\u8fdb\u7a0b\u7684\u8fdb\u7a0b ID\u3002 NULL \u8868\u793a\u8be5\u8fdb\u7a0b\u662f\u5e76\u884c\u7ec4\u9886\u5bfc\u8005\u6216\u9886\u5bfc\u8005\u5e94\u7528\u5de5\u4f5c\u8fdb\u7a0b\uff0c\u6216\u8005\u4e0d\u53c2\u4e0e\u4efb\u4f55\u5e76\u884c\u64cd\u4f5c\u3002", "aliases": ["leader_pid", "pg_stat_activity"], "content_hash": "825150e4404953083daf5a79d6e2d5b24cdd28239328cf30f47d7df6926de2c3", "versions": {"13": {"view": "pg_stat_activity", "facts": [{"label": "\u89c6\u56fe", "value": "pg_stat_activity"}, {"label": "\u5b57\u6bb5", "value": "leader_pid"}, {"label": "SQL \u7c7b\u578b", "value": "integer"}, {"label": "\u5b57\u6bb5\u5b9a\u4e49\u8bb0\u8f7d\u7684\u5355\u4f4d", "value": "\u672a\u6307\u5b9a"}, {"label": "\u91cd\u7f6e\u6761\u4ef6", "value": "\u624b\u518c\u672a\u4e3a\u6b64\u89c6\u56fe\u8bb0\u8f7d stats_reset \u5b57\u6bb5"}], "field": "leader_pid", "tables": [], "related": [{"url": "/wiki/catalog/pg_stat_activity/?v=13", "label": "pg_stat_activity \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": "https://pg.center/docs/13/monitoring-stats.html#PG-STAT-ACTIVITY-VIEW", "path": "monitoring-stats.html", "label": "PostgreSQL 13 English manual", "sha256": "a8ec0d199d592259f260a41ccb2821e582cd6dae1014a784e1e86203740afcb0", "language": "en", "original_url": "/docs/13/monitoring-stats.html#PG-STAT-ACTIVITY-VIEW"}], "sections": [{"title": "\u89c6\u56fe\u8bed\u4e49", "paragraphs": ["pg_stat_activity \u89c6\u56fe\u6bcf\u4e2a\u670d\u52a1\u5668\u8fdb\u7a0b\u5c06\u6709\u4e00\u884c\uff0c\u663e\u793a\u4e0e\u8be5\u8fdb\u7a0b\u5f53\u524d\u6d3b\u52a8\u76f8\u5173\u7684\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 leader_pid FROM pg_catalog.pg_stat_activity;", "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": "integer", "signature": "SELECT leader_pid FROM pg_catalog.pg_stat_activity;", "documented": true, "description": ["\u5982\u679c\u6b64\u8fdb\u7a0b\u662f\u5e76\u884c\u67e5\u8be2\u5de5\u4f5c\u8fdb\u7a0b\uff0c\u5219\u4e3a\u5e76\u884c\u7ec4\u9886\u5bfc\u8005\u7684\u8fdb\u7a0b ID\u3002\u5982\u679c\u6b64\u8fdb\u7a0b\u662f\u5e76\u884c\u7ec4\u9886\u5bfc\u8005\u6216\u8005\u4e0d\u53c2\u4e0e\u5e76\u884c\u67e5\u8be2\uff0c\u5219\u4e3a NULL \u3002"], "manual_html": "", "manual_path": "/docs/13/monitoring-stats.html", "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[7]/div[3]/div[1]/table[0]/tbody[2]/tr[3]/td[0]/p[1]", "#MONITORING-STATS/div[7]/p[2]"]}], "language": "zh", "original_text": {"/versions/13/description/0": "Process ID of the parallel group leader, if this process is a parallel query worker. NULL if this process is a parallel group leader or does not participate in parallel query.", "/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/3/value": "Not specified", "/versions/13/facts/4/label": "Reset observation", "/versions/13/facts/4/value": "No stats_reset field is documented for this view", "/versions/13/related/0/label": "pg_stat_activity 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_activity view will have one row per server process, showing information related to the current activity of that process.", "/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": "568613a56c6ea7cda538131a6e320c64f1a7532dd4778842bb36820064115e85"}, "comparison_data": {"view": "pg_stat_activity", "field": "leader_pid", "sql_type": "integer", "units_mentioned": []}, "comparison_hash": "f89284edc4852ed2535d67bc526c03b7de3fdfbfd87ef7a05ab41ef7a3187ebf", "units_mentioned": []}, "14": {"view": "pg_stat_activity", "facts": [{"label": "\u89c6\u56fe", "value": "pg_stat_activity"}, {"label": "\u5b57\u6bb5", "value": "leader_pid"}, {"label": "SQL \u7c7b\u578b", "value": "integer"}, {"label": "\u5b57\u6bb5\u5b9a\u4e49\u8bb0\u8f7d\u7684\u5355\u4f4d", "value": "\u672a\u6307\u5b9a"}, {"label": "\u91cd\u7f6e\u6761\u4ef6", "value": "\u624b\u518c\u672a\u4e3a\u6b64\u89c6\u56fe\u8bb0\u8f7d stats_reset \u5b57\u6bb5"}], "field": "leader_pid", "tables": [], "related": [{"url": "/wiki/catalog/pg_stat_activity/?v=14", "label": "pg_stat_activity \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": "https://pg.center/docs/14/monitoring-stats.html#PG-STAT-ACTIVITY-VIEW", "path": "monitoring-stats.html", "label": "PostgreSQL 14 English manual", "sha256": "1852c6205d68e465d08dd8f75e3b6bfdd4a475ee8d79886e2dcff6bff8e2d243", "language": "en", "original_url": "/docs/14/monitoring-stats.html#PG-STAT-ACTIVITY-VIEW"}], "sections": [{"title": "\u89c6\u56fe\u8bed\u4e49", "paragraphs": ["pg_stat_activity \u89c6\u56fe\u6bcf\u4e2a\u670d\u52a1\u5668\u8fdb\u7a0b\u5c06\u6709\u4e00\u884c\uff0c\u663e\u793a\u4e0e\u8be5\u8fdb\u7a0b\u5f53\u524d\u6d3b\u52a8\u76f8\u5173\u7684\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 leader_pid FROM pg_catalog.pg_stat_activity;", "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": "integer", "signature": "SELECT leader_pid FROM pg_catalog.pg_stat_activity;", "documented": true, "description": ["\u5982\u679c\u6b64\u8fdb\u7a0b\u662f\u5e76\u884c\u67e5\u8be2\u5de5\u4f5c\u8fdb\u7a0b\uff0c\u5219\u4e3a\u5e76\u884c\u7ec4\u9886\u5bfc\u8005\u7684\u8fdb\u7a0b ID\u3002\u5982\u679c\u6b64\u8fdb\u7a0b\u662f\u5e76\u884c\u7ec4\u9886\u5bfc\u8005\u6216\u8005\u4e0d\u53c2\u4e0e\u5e76\u884c\u67e5\u8be2\uff0c\u5219\u4e3a NULL \u3002"], "manual_html": "", "manual_path": "/docs/14/monitoring-stats.html", "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[7]/div[3]/div[1]/table[0]/tbody[2]/tr[3]/td[0]/p[1]", "#MONITORING-STATS/div[7]/p[2]"]}], "language": "zh", "original_text": {"/versions/14/description/0": "Process ID of the parallel group leader, if this process is a parallel query worker. NULL if this process is a parallel group leader or does not participate in parallel query.", "/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/3/value": "Not specified", "/versions/14/facts/4/label": "Reset observation", "/versions/14/facts/4/value": "No stats_reset field is documented for this view", "/versions/14/related/0/label": "pg_stat_activity 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_activity view will have one row per server process, showing information related to the current activity of that process.", "/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": "3886a53b6c1b4eb3cd2c2f26d701aec99e90325b84b50971245ec15831a2399d"}, "comparison_data": {"view": "pg_stat_activity", "field": "leader_pid", "sql_type": "integer", "units_mentioned": []}, "comparison_hash": "f89284edc4852ed2535d67bc526c03b7de3fdfbfd87ef7a05ab41ef7a3187ebf", "units_mentioned": []}, "15": {"view": "pg_stat_activity", "facts": [{"label": "\u89c6\u56fe", "value": "pg_stat_activity"}, {"label": "\u5b57\u6bb5", "value": "leader_pid"}, {"label": "SQL \u7c7b\u578b", "value": "integer"}, {"label": "\u5b57\u6bb5\u5b9a\u4e49\u8bb0\u8f7d\u7684\u5355\u4f4d", "value": "\u672a\u6307\u5b9a"}, {"label": "\u91cd\u7f6e\u6761\u4ef6", "value": "\u624b\u518c\u672a\u4e3a\u6b64\u89c6\u56fe\u8bb0\u8f7d stats_reset \u5b57\u6bb5"}], "field": "leader_pid", "tables": [], "related": [{"url": "/wiki/catalog/pg_stat_activity/?v=15", "label": "pg_stat_activity \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": "https://pg.center/docs/15/monitoring-stats.html#PG-STAT-ACTIVITY-VIEW", "path": "monitoring-stats.html", "label": "PostgreSQL 15 English manual", "sha256": "034c0a2e99e6707e637bf4d6cfd819d39eddc1b4b7c1ec2a00f0b4f0fdb0a078", "language": "en", "original_url": "/docs/15/monitoring-stats.html#PG-STAT-ACTIVITY-VIEW"}], "sections": [{"title": "\u89c6\u56fe\u8bed\u4e49", "paragraphs": ["pg_stat_activity \u89c6\u56fe\u6bcf\u4e2a\u670d\u52a1\u5668\u8fdb\u7a0b\u5c06\u6709\u4e00\u884c\uff0c\u663e\u793a\u4e0e\u8be5\u8fdb\u7a0b\u5f53\u524d\u6d3b\u52a8\u76f8\u5173\u7684\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 leader_pid FROM pg_catalog.pg_stat_activity;", "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": "integer", "signature": "SELECT leader_pid FROM pg_catalog.pg_stat_activity;", "documented": true, "description": ["\u5982\u679c\u6b64\u8fdb\u7a0b\u662f\u5e76\u884c\u67e5\u8be2\u5de5\u4f5c\u8fdb\u7a0b\uff0c\u5219\u4e3a\u5e76\u884c\u7ec4\u9886\u5bfc\u8005\u7684\u8fdb\u7a0b ID\u3002\u5982\u679c\u6b64\u8fdb\u7a0b\u662f\u5e76\u884c\u7ec4\u9886\u5bfc\u8005\u6216\u8005\u4e0d\u53c2\u4e0e\u5e76\u884c\u67e5\u8be2\uff0c\u5219\u4e3a NULL \u3002"], "manual_html": "", "manual_path": "/docs/15/monitoring-stats.html", "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[7]/div[3]/div[1]/table[0]/tbody[2]/tr[3]/td[0]/p[1]", "#MONITORING-STATS/div[7]/p[2]"]}], "language": "zh", "original_text": {"/versions/15/description/0": "Process ID of the parallel group leader, if this process is a parallel query worker. NULL if this process is a parallel group leader or does not participate in parallel query.", "/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/3/value": "Not specified", "/versions/15/facts/4/label": "Reset observation", "/versions/15/facts/4/value": "No stats_reset field is documented for this view", "/versions/15/related/0/label": "pg_stat_activity 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_activity view will have one row per server process, showing information related to the current activity of that process.", "/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": "fc98ba9babe04c95f916caa708c4aefaf6f043c67a9e7556e4dc0a4d98c78fda"}, "comparison_data": {"view": "pg_stat_activity", "field": "leader_pid", "sql_type": "integer", "units_mentioned": []}, "comparison_hash": "f89284edc4852ed2535d67bc526c03b7de3fdfbfd87ef7a05ab41ef7a3187ebf", "units_mentioned": []}, "16": {"view": "pg_stat_activity", "facts": [{"label": "\u89c6\u56fe", "value": "pg_stat_activity"}, {"label": "\u5b57\u6bb5", "value": "leader_pid"}, {"label": "SQL \u7c7b\u578b", "value": "integer"}, {"label": "\u5b57\u6bb5\u5b9a\u4e49\u8bb0\u8f7d\u7684\u5355\u4f4d", "value": "\u672a\u6307\u5b9a"}, {"label": "\u91cd\u7f6e\u6761\u4ef6", "value": "\u624b\u518c\u672a\u4e3a\u6b64\u89c6\u56fe\u8bb0\u8f7d stats_reset \u5b57\u6bb5"}], "field": "leader_pid", "tables": [], "related": [{"url": "/wiki/catalog/pg_stat_activity/?v=16", "label": "pg_stat_activity \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": "https://pg.center/docs/16/monitoring-stats.html#PG-STAT-ACTIVITY-VIEW", "path": "monitoring-stats.html", "label": "PostgreSQL 16 English manual", "sha256": "a4c274defe8a41ff2895040cd542b5499063b844669ff3336de1a1317c3fe086", "language": "en", "original_url": "/docs/16/monitoring-stats.html#PG-STAT-ACTIVITY-VIEW"}], "sections": [{"title": "\u89c6\u56fe\u8bed\u4e49", "paragraphs": ["pg_stat_activity \u89c6\u56fe\u6bcf\u4e2a\u670d\u52a1\u5668\u8fdb\u7a0b\u5c06\u6709\u4e00\u884c\uff0c\u663e\u793a\u4e0e\u8be5\u8fdb\u7a0b\u5f53\u524d\u6d3b\u52a8\u76f8\u5173\u7684\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 leader_pid FROM pg_catalog.pg_stat_activity;", "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": "integer", "signature": "SELECT leader_pid FROM pg_catalog.pg_stat_activity;", "documented": true, "description": ["\u5982\u679c\u8be5\u8fdb\u7a0b\u662f\u5e76\u884c\u67e5\u8be2\u5de5\u4f5c\u8fdb\u7a0b\uff0c\u5219\u4e3a\u5e76\u884c\u7ec4\u9886\u5bfc\u8005\u7684\u8fdb\u7a0b ID\uff1b\u5982\u679c\u8be5\u8fdb\u7a0b\u662f\u5e76\u884c\u5e94\u7528\u5de5\u4f5c\u8fdb\u7a0b\uff0c\u5219\u4e3a\u9886\u5bfc\u8005\u5e94\u7528\u5de5\u4f5c\u8fdb\u7a0b\u7684\u8fdb\u7a0b ID\u3002 NULL \u8868\u793a\u8be5\u8fdb\u7a0b\u662f\u5e76\u884c\u7ec4\u9886\u5bfc\u8005\u6216\u9886\u5bfc\u8005\u5e94\u7528\u5de5\u4f5c\u8fdb\u7a0b\uff0c\u6216\u8005\u4e0d\u53c2\u4e0e\u4efb\u4f55\u5e76\u884c\u64cd\u4f5c\u3002"], "manual_html": "", "manual_path": "/docs/16/monitoring-stats.html", "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[7]/div[3]/div[1]/table[0]/tbody[2]/tr[3]/td[0]/p[1]", "#MONITORING-STATS/div[7]/p[2]"]}], "language": "zh", "original_text": {"/versions/16/description/0": "Process ID of the parallel group leader if this process is a parallel query worker, or process ID of the leader apply worker if this process is a parallel apply worker. NULL indicates that this process is a parallel group leader or leader apply worker, or does not participate in any parallel operation.", "/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/3/value": "Not specified", "/versions/16/facts/4/label": "Reset observation", "/versions/16/facts/4/value": "No stats_reset field is documented for this view", "/versions/16/related/0/label": "pg_stat_activity 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_activity view will have one row per server process, showing information related to the current activity of that process.", "/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": "e9c9fd088f4d22530b2f7a7b9494f35fb0c2ec3526da998ce7fe704b34422b66"}, "comparison_data": {"view": "pg_stat_activity", "field": "leader_pid", "sql_type": "integer", "units_mentioned": []}, "comparison_hash": "f89284edc4852ed2535d67bc526c03b7de3fdfbfd87ef7a05ab41ef7a3187ebf", "units_mentioned": []}, "17": {"view": "pg_stat_activity", "facts": [{"label": "\u89c6\u56fe", "value": "pg_stat_activity"}, {"label": "\u5b57\u6bb5", "value": "leader_pid"}, {"label": "SQL \u7c7b\u578b", "value": "integer"}, {"label": "\u5b57\u6bb5\u5b9a\u4e49\u8bb0\u8f7d\u7684\u5355\u4f4d", "value": "\u672a\u6307\u5b9a"}, {"label": "\u91cd\u7f6e\u6761\u4ef6", "value": "\u624b\u518c\u672a\u4e3a\u6b64\u89c6\u56fe\u8bb0\u8f7d stats_reset \u5b57\u6bb5"}], "field": "leader_pid", "tables": [], "related": [{"url": "/wiki/catalog/pg_stat_activity/?v=17", "label": "pg_stat_activity \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": "https://pg.center/docs/17/monitoring-stats.html#PG-STAT-ACTIVITY-VIEW", "path": "monitoring-stats.html", "label": "PostgreSQL 17 English manual", "sha256": "007af6e8ab39b925963273ec3ba7f06f8ee6fbfaad821f07a1dc78383dbb9b99", "language": "en", "original_url": "/docs/17/monitoring-stats.html#PG-STAT-ACTIVITY-VIEW"}], "sections": [{"title": "\u89c6\u56fe\u8bed\u4e49", "paragraphs": ["pg_stat_activity \u89c6\u56fe\u6bcf\u4e2a\u670d\u52a1\u5668\u8fdb\u7a0b\u5c06\u6709\u4e00\u884c\uff0c\u663e\u793a\u4e0e\u8be5\u8fdb\u7a0b\u5f53\u524d\u6d3b\u52a8\u76f8\u5173\u7684\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 leader_pid FROM pg_catalog.pg_stat_activity;", "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": "integer", "signature": "SELECT leader_pid FROM pg_catalog.pg_stat_activity;", "documented": true, "description": ["\u5982\u679c\u8be5\u8fdb\u7a0b\u662f\u5e76\u884c\u67e5\u8be2\u5de5\u4f5c\u8fdb\u7a0b\uff0c\u5219\u4e3a\u5e76\u884c\u7ec4\u9886\u5bfc\u8005\u7684\u8fdb\u7a0b ID\uff1b\u5982\u679c\u8be5\u8fdb\u7a0b\u662f\u5e76\u884c\u5e94\u7528\u5de5\u4f5c\u8fdb\u7a0b\uff0c\u5219\u4e3a\u9886\u5bfc\u8005\u5e94\u7528\u5de5\u4f5c\u8fdb\u7a0b\u7684\u8fdb\u7a0b ID\u3002 NULL \u8868\u793a\u8be5\u8fdb\u7a0b\u662f\u5e76\u884c\u7ec4\u9886\u5bfc\u8005\u6216\u9886\u5bfc\u8005\u5e94\u7528\u5de5\u4f5c\u8fdb\u7a0b\uff0c\u6216\u8005\u4e0d\u53c2\u4e0e\u4efb\u4f55\u5e76\u884c\u64cd\u4f5c\u3002"], "manual_html": "", "manual_path": "/docs/17/monitoring-stats.html", "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[7]/div[3]/div[1]/table[0]/tbody[2]/tr[3]/td[0]/p[1]", "#MONITORING-STATS/div[7]/p[2]"]}], "language": "zh", "original_text": {"/versions/17/description/0": "Process ID of the parallel group leader if this process is a parallel query worker, or process ID of the leader apply worker if this process is a parallel apply worker. NULL indicates that this process is a parallel group leader or leader apply worker, or does not participate in any parallel operation.", "/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/3/value": "Not specified", "/versions/17/facts/4/label": "Reset observation", "/versions/17/facts/4/value": "No stats_reset field is documented for this view", "/versions/17/related/0/label": "pg_stat_activity 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_activity view will have one row per server process, showing information related to the current activity of that process.", "/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": "00e89fc0eaf26b1d8ec28c78c06ba9b55b7e42559e18cf8e6cdac033f551a7c3"}, "comparison_data": {"view": "pg_stat_activity", "field": "leader_pid", "sql_type": "integer", "units_mentioned": []}, "comparison_hash": "f89284edc4852ed2535d67bc526c03b7de3fdfbfd87ef7a05ab41ef7a3187ebf", "units_mentioned": []}, "18": {"view": "pg_stat_activity", "facts": [{"label": "\u89c6\u56fe", "value": "pg_stat_activity"}, {"label": "\u5b57\u6bb5", "value": "leader_pid"}, {"label": "SQL \u7c7b\u578b", "value": "integer"}, {"label": "\u5b57\u6bb5\u5b9a\u4e49\u8bb0\u8f7d\u7684\u5355\u4f4d", "value": "\u672a\u6307\u5b9a"}, {"label": "\u91cd\u7f6e\u6761\u4ef6", "value": "\u624b\u518c\u672a\u4e3a\u6b64\u89c6\u56fe\u8bb0\u8f7d stats_reset \u5b57\u6bb5"}], "field": "leader_pid", "tables": [], "related": [{"url": "/wiki/catalog/pg_stat_activity/?v=18", "label": "pg_stat_activity \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": "https://pg.center/docs/18/monitoring-stats.html#PG-STAT-ACTIVITY-VIEW", "path": "monitoring-stats.html", "label": "PostgreSQL 18 English manual", "sha256": "aa979eed08627fbf715a9d792094a162a73671db5af810f3ab2aad3e073d5722", "language": "en", "original_url": "/docs/18/monitoring-stats.html#PG-STAT-ACTIVITY-VIEW"}], "sections": [{"title": "\u89c6\u56fe\u8bed\u4e49", "paragraphs": ["pg_stat_activity \u89c6\u56fe\u6bcf\u4e2a\u670d\u52a1\u5668\u8fdb\u7a0b\u5c06\u6709\u4e00\u884c\uff0c\u663e\u793a\u4e0e\u8be5\u8fdb\u7a0b\u5f53\u524d\u6d3b\u52a8\u76f8\u5173\u7684\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 leader_pid FROM pg_catalog.pg_stat_activity;", "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": "integer", "signature": "SELECT leader_pid FROM pg_catalog.pg_stat_activity;", "documented": true, "description": ["\u5982\u679c\u8be5\u8fdb\u7a0b\u662f\u5e76\u884c\u67e5\u8be2\u5de5\u4f5c\u8fdb\u7a0b\uff0c\u5219\u4e3a\u5e76\u884c\u7ec4\u9886\u5bfc\u8005\u7684\u8fdb\u7a0b ID\uff1b\u5982\u679c\u8be5\u8fdb\u7a0b\u662f\u5e76\u884c\u5e94\u7528\u5de5\u4f5c\u8fdb\u7a0b\uff0c\u5219\u4e3a\u9886\u5bfc\u8005\u5e94\u7528\u5de5\u4f5c\u8fdb\u7a0b\u7684\u8fdb\u7a0b ID\u3002 NULL \u8868\u793a\u8be5\u8fdb\u7a0b\u662f\u5e76\u884c\u7ec4\u9886\u5bfc\u8005\u6216\u9886\u5bfc\u8005\u5e94\u7528\u5de5\u4f5c\u8fdb\u7a0b\uff0c\u6216\u8005\u4e0d\u53c2\u4e0e\u4efb\u4f55\u5e76\u884c\u64cd\u4f5c\u3002"], "manual_html": "", "manual_path": "/docs/18/monitoring-stats.html", "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[7]/div[3]/div[1]/table[0]/tbody[2]/tr[3]/td[0]/p[1]", "#MONITORING-STATS/div[7]/p[2]"]}], "language": "zh", "original_text": {"/versions/18/description/0": "Process ID of the parallel group leader if this process is a parallel query worker, or process ID of the leader apply worker if this process is a parallel apply worker. NULL indicates that this process is a parallel group leader or leader apply worker, or does not participate in any parallel operation.", "/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/3/value": "Not specified", "/versions/18/facts/4/label": "Reset observation", "/versions/18/facts/4/value": "No stats_reset field is documented for this view", "/versions/18/related/0/label": "pg_stat_activity 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_activity view will have one row per server process, showing information related to the current activity of that process.", "/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": "d5f5731af6c9afd550a284bf2be7f2333fbbc1b73776ae9e9b790c77852c09e1"}, "comparison_data": {"view": "pg_stat_activity", "field": "leader_pid", "sql_type": "integer", "units_mentioned": []}, "comparison_hash": "f89284edc4852ed2535d67bc526c03b7de3fdfbfd87ef7a05ab41ef7a3187ebf", "units_mentioned": []}, "19": {"view": "pg_stat_activity", "facts": [{"label": "\u89c6\u56fe", "value": "pg_stat_activity"}, {"label": "\u5b57\u6bb5", "value": "leader_pid"}, {"label": "SQL \u7c7b\u578b", "value": "integer"}, {"label": "\u5b57\u6bb5\u5b9a\u4e49\u8bb0\u8f7d\u7684\u5355\u4f4d", "value": "\u672a\u6307\u5b9a"}, {"label": "\u91cd\u7f6e\u6761\u4ef6", "value": "\u624b\u518c\u672a\u4e3a\u6b64\u89c6\u56fe\u8bb0\u8f7d stats_reset \u5b57\u6bb5"}], "field": "leader_pid", "tables": [], "related": [{"url": "/wiki/catalog/pg_stat_activity/?v=19", "label": "pg_stat_activity \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/v19beta4/postgresql-19beta4.tar.bz2", "label": "19beta4", "major": "19", "channel": "preview", "revision": "83157ee9c599d03b2f7a3d73ef3a56ec24e0e79cc2b3501a64d1364f56398c86"}, "sources": [{"url": "https://pg.center/docs/19/monitoring-stats.html#PG-STAT-ACTIVITY-VIEW", "path": "monitoring-stats.html", "label": "PostgreSQL 19 English manual", "sha256": "26e1b6632bdf05ebe081987cb60ab4ded526eec7db73e41316fbd69466c494fe", "language": "en", "original_url": "/docs/19/monitoring-stats.html#PG-STAT-ACTIVITY-VIEW"}], "sections": [{"title": "\u89c6\u56fe\u8bed\u4e49", "paragraphs": ["pg_stat_activity \u89c6\u56fe\u6bcf\u4e2a\u670d\u52a1\u5668\u8fdb\u7a0b\u5c06\u6709\u4e00\u884c\uff0c\u663e\u793a\u4e0e\u8be5\u8fdb\u7a0b\u5f53\u524d\u6d3b\u52a8\u76f8\u5173\u7684\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 leader_pid FROM pg_catalog.pg_stat_activity;", "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": "integer", "signature": "SELECT leader_pid FROM pg_catalog.pg_stat_activity;", "documented": true, "description": ["\u5982\u679c\u8be5\u8fdb\u7a0b\u662f\u5e76\u884c\u67e5\u8be2\u5de5\u4f5c\u8fdb\u7a0b\uff0c\u5219\u4e3a\u5e76\u884c\u7ec4\u9886\u5bfc\u8005\u7684\u8fdb\u7a0b ID\uff1b\u5982\u679c\u8be5\u8fdb\u7a0b\u662f\u5e76\u884c\u5e94\u7528\u5de5\u4f5c\u8fdb\u7a0b\uff0c\u5219\u4e3a\u9886\u5bfc\u8005\u5e94\u7528\u5de5\u4f5c\u8fdb\u7a0b\u7684\u8fdb\u7a0b ID\u3002 NULL \u8868\u793a\u8be5\u8fdb\u7a0b\u662f\u5e76\u884c\u7ec4\u9886\u5bfc\u8005\u6216\u9886\u5bfc\u8005\u5e94\u7528\u5de5\u4f5c\u8fdb\u7a0b\uff0c\u6216\u8005\u4e0d\u53c2\u4e0e\u4efb\u4f55\u5e76\u884c\u64cd\u4f5c\u3002"], "manual_html": "", "manual_path": "/docs/19/monitoring-stats.html", "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[7]/div[3]/div[1]/table[0]/tbody[2]/tr[3]/td[0]/p[1]", "#MONITORING-STATS/div[7]/p[2]"]}], "language": "zh", "original_text": {"/versions/19/description/0": "Process ID of the parallel group leader if this process is a parallel query worker, or process ID of the leader apply worker if this process is a parallel apply worker. NULL indicates that this process is a parallel group leader or leader apply worker, or does not participate in any parallel operation.", "/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/3/value": "Not specified", "/versions/19/facts/4/label": "Reset observation", "/versions/19/facts/4/value": "No stats_reset field is documented for this view", "/versions/19/related/0/label": "pg_stat_activity 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_activity view will have one row per server process, showing information related to the current activity of that process.", "/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": "4b5463199d9249630425c0dce3bb3dc2bf7da6a18f5b536b45e714f0b46cd7df"}, "comparison_data": {"view": "pg_stat_activity", "field": "leader_pid", "sql_type": "integer", "units_mentioned": []}, "comparison_hash": "f89284edc4852ed2535d67bc526c03b7de3fdfbfd87ef7a05ab41ef7a3187ebf", "units_mentioned": []}, "20": {"view": "pg_stat_activity", "facts": [{"label": "\u89c6\u56fe", "value": "pg_stat_activity"}, {"label": "\u5b57\u6bb5", "value": "leader_pid"}, {"label": "SQL \u7c7b\u578b", "value": "integer"}, {"label": "\u5b57\u6bb5\u5b9a\u4e49\u8bb0\u8f7d\u7684\u5355\u4f4d", "value": "\u672a\u6307\u5b9a"}, {"label": "\u91cd\u7f6e\u6761\u4ef6", "value": "\u624b\u518c\u672a\u4e3a\u6b64\u89c6\u56fe\u8bb0\u8f7d stats_reset \u5b57\u6bb5"}], "field": "leader_pid", "tables": [], "related": [{"url": "/wiki/catalog/pg_stat_activity/?v=20", "label": "pg_stat_activity \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": "4d3346909b201ac1648232cf290462a7070c119326f56196f1f0253ed80fae41"}, "sources": [{"url": "https://pg.center/docs/devel/monitoring-stats.html#PG-STAT-ACTIVITY-VIEW", "path": "monitoring-stats.html", "label": "PostgreSQL 20 English manual", "sha256": "dfc27a108b70bdf88f310801ae3db011a8f608befd927722e5f3e9bdcc070251", "language": "en", "original_url": "/docs/devel/monitoring-stats.html#PG-STAT-ACTIVITY-VIEW"}], "sections": [{"title": "\u89c6\u56fe\u8bed\u4e49", "paragraphs": ["pg_stat_activity \u89c6\u56fe\u6bcf\u4e2a\u670d\u52a1\u5668\u8fdb\u7a0b\u5c06\u6709\u4e00\u884c\uff0c\u663e\u793a\u4e0e\u8be5\u8fdb\u7a0b\u5f53\u524d\u6d3b\u52a8\u76f8\u5173\u7684\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 leader_pid FROM pg_catalog.pg_stat_activity;", "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": "integer", "signature": "SELECT leader_pid FROM pg_catalog.pg_stat_activity;", "documented": true, "description": ["\u5982\u679c\u8be5\u8fdb\u7a0b\u662f\u5e76\u884c\u67e5\u8be2\u5de5\u4f5c\u8fdb\u7a0b\uff0c\u5219\u4e3a\u5e76\u884c\u7ec4\u9886\u5bfc\u8005\u7684\u8fdb\u7a0b ID\uff1b\u5982\u679c\u8be5\u8fdb\u7a0b\u662f\u5e76\u884c\u5e94\u7528\u5de5\u4f5c\u8fdb\u7a0b\uff0c\u5219\u4e3a\u9886\u5bfc\u8005\u5e94\u7528\u5de5\u4f5c\u8fdb\u7a0b\u7684\u8fdb\u7a0b ID\u3002 NULL \u8868\u793a\u8be5\u8fdb\u7a0b\u662f\u5e76\u884c\u7ec4\u9886\u5bfc\u8005\u6216\u9886\u5bfc\u8005\u5e94\u7528\u5de5\u4f5c\u8fdb\u7a0b\uff0c\u6216\u8005\u4e0d\u53c2\u4e0e\u4efb\u4f55\u5e76\u884c\u64cd\u4f5c\u3002"], "manual_html": "", "manual_path": "/docs/devel/monitoring-stats.html", "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[7]/div[3]/div[1]/table[0]/tbody[2]/tr[3]/td[0]/p[1]", "#MONITORING-STATS/div[7]/p[2]"]}], "language": "zh", "original_text": {"/summary": "Process ID of the parallel group leader if this process is a parallel query worker, or process ID of the leader apply worker if this process is a parallel apply worker. NULL indicates that this process is a parallel group leader or leader apply worker, or does not participate in any parallel operation.", "/versions/20/description/0": "Process ID of the parallel group leader if this process is a parallel query worker, or process ID of the leader apply worker if this process is a parallel apply worker. NULL indicates that this process is a parallel group leader or leader apply worker, or does not participate in any parallel operation.", "/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/3/value": "Not specified", "/versions/20/facts/4/label": "Reset observation", "/versions/20/facts/4/value": "No stats_reset field is documented for this view", "/versions/20/related/0/label": "pg_stat_activity 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_activity view will have one row per server process, showing information related to the current activity of that process.", "/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": "09f5ad94f2217c989a0631bfa29f3eb3ae11b2d80ac79be4f93f063e0fccdfb6"}, "comparison_data": {"view": "pg_stat_activity", "field": "leader_pid", "sql_type": "integer", "units_mentioned": []}, "comparison_hash": "f89284edc4852ed2535d67bc526c03b7de3fdfbfd87ef7a05ab41ef7a3187ebf", "units_mentioned": []}}}, "snapshot": {"view": "pg_stat_activity", "facts": [{"label": "\u89c6\u56fe", "value": "pg_stat_activity"}, {"label": "\u5b57\u6bb5", "value": "leader_pid"}, {"label": "SQL \u7c7b\u578b", "value": "integer"}, {"label": "\u5b57\u6bb5\u5b9a\u4e49\u8bb0\u8f7d\u7684\u5355\u4f4d", "value": "\u672a\u6307\u5b9a"}, {"label": "\u91cd\u7f6e\u6761\u4ef6", "value": "\u624b\u518c\u672a\u4e3a\u6b64\u89c6\u56fe\u8bb0\u8f7d stats_reset \u5b57\u6bb5"}], "field": "leader_pid", "tables": [], "related": [{"url": "/wiki/catalog/pg_stat_activity/?v=18", "label": "pg_stat_activity \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": "https://pg.center/docs/18/monitoring-stats.html#PG-STAT-ACTIVITY-VIEW", "path": "monitoring-stats.html", "label": "PostgreSQL 18 English manual", "sha256": "aa979eed08627fbf715a9d792094a162a73671db5af810f3ab2aad3e073d5722", "language": "en", "original_url": "/docs/18/monitoring-stats.html#PG-STAT-ACTIVITY-VIEW"}], "sections": [{"title": "\u89c6\u56fe\u8bed\u4e49", "paragraphs": ["pg_stat_activity \u89c6\u56fe\u6bcf\u4e2a\u670d\u52a1\u5668\u8fdb\u7a0b\u5c06\u6709\u4e00\u884c\uff0c\u663e\u793a\u4e0e\u8be5\u8fdb\u7a0b\u5f53\u524d\u6d3b\u52a8\u76f8\u5173\u7684\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 leader_pid FROM pg_catalog.pg_stat_activity;", "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": "integer", "signature": "SELECT leader_pid FROM pg_catalog.pg_stat_activity;", "documented": true, "description": ["\u5982\u679c\u8be5\u8fdb\u7a0b\u662f\u5e76\u884c\u67e5\u8be2\u5de5\u4f5c\u8fdb\u7a0b\uff0c\u5219\u4e3a\u5e76\u884c\u7ec4\u9886\u5bfc\u8005\u7684\u8fdb\u7a0b ID\uff1b\u5982\u679c\u8be5\u8fdb\u7a0b\u662f\u5e76\u884c\u5e94\u7528\u5de5\u4f5c\u8fdb\u7a0b\uff0c\u5219\u4e3a\u9886\u5bfc\u8005\u5e94\u7528\u5de5\u4f5c\u8fdb\u7a0b\u7684\u8fdb\u7a0b ID\u3002 NULL \u8868\u793a\u8be5\u8fdb\u7a0b\u662f\u5e76\u884c\u7ec4\u9886\u5bfc\u8005\u6216\u9886\u5bfc\u8005\u5e94\u7528\u5de5\u4f5c\u8fdb\u7a0b\uff0c\u6216\u8005\u4e0d\u53c2\u4e0e\u4efb\u4f55\u5e76\u884c\u64cd\u4f5c\u3002"], "manual_html": "", "manual_path": "/docs/18/monitoring-stats.html", "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[7]/div[3]/div[1]/table[0]/tbody[2]/tr[3]/td[0]/p[1]", "#MONITORING-STATS/div[7]/p[2]"]}], "language": "zh", "original_text": {"/versions/18/description/0": "Process ID of the parallel group leader if this process is a parallel query worker, or process ID of the leader apply worker if this process is a parallel apply worker. NULL indicates that this process is a parallel group leader or leader apply worker, or does not participate in any parallel operation.", "/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/3/value": "Not specified", "/versions/18/facts/4/label": "Reset observation", "/versions/18/facts/4/value": "No stats_reset field is documented for this view", "/versions/18/related/0/label": "pg_stat_activity 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_activity view will have one row per server process, showing information related to the current activity of that process.", "/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": "d5f5731af6c9afd550a284bf2be7f2333fbbc1b73776ae9e9b790c77852c09e1"}, "comparison_data": {"view": "pg_stat_activity", "field": "leader_pid", "sql_type": "integer", "units_mentioned": []}, "comparison_hash": "f89284edc4852ed2535d67bc526c03b7de3fdfbfd87ef7a05ab41ef7a3187ebf", "units_mentioned": []}, "comparison": {"left": "17", "right": "18", "status": "unchanged", "diff": ""}}