{"Entry":{"collection":"metric","key":"pg_stat_activity-usesysid","name":"pg_stat_activity.usesysid","aliases":["usesysid","pg_stat_activity"],"metadata":{"aliases":["usesysid","pg_stat_activity"],"category":"pg_stat_activity","content_hash":"9cff59233e89a3525624e0f5ed3d893aae50c4ac21621b0dcbaa539c2c623f27","derived_content_hash":"1aedef2323e4cb6b9d3661c962b6d22b9070d8177b472bac34470c65010df228","imported_at":"2026-09-30T00:40:45.30169+08:00","name":"pg_stat_activity.usesysid","name_zh":"","slug":"pg_stat_activity-usesysid","summary":"OID of the user logged into this backend"}},"Definition":{"Collection":"metric","Key":"pg_stat_activity-usesysid","SourceDatabase":"center","Version":"18","SourceTable":"statistics_metric","SourceKey":"pg_stat_activity-usesysid","SourceRevision":"555610c24d53e4316da5b7d3fc25c279d96856d5e0e23ee308c328c5fa881d9f","Facts":{"comparison_data":{"field":"usesysid","sql_type":"oid","units_mentioned":[],"view":"pg_stat_activity"},"comparison_hash":"03a93ef84f59b20a31eab053d402763e51186f8359c88ad05054a69056e20b8a","description":["OID of the user logged into this backend"],"description_zh":"登录到这个后端的用户的 OID","description_zh_html":"\u003cp\u003epg_stat_activity.usesysid 统计字段。\u003c/p\u003e\u003cdl\u003e\u003cdt\u003e视图\u003c/dt\u003e\u003cdd\u003e\u003ccode\u003epg_stat_activity\u003c/code\u003e\u003c/dd\u003e\u003cdt\u003e字段\u003c/dt\u003e\u003cdd\u003e\u003ccode\u003eusesysid\u003c/code\u003e\u003c/dd\u003e\u003cdt\u003eSQL 类型\u003c/dt\u003e\u003cdd\u003e\u003ccode\u003eoid\u003c/code\u003e\u003c/dd\u003e\u003c/dl\u003e\u003ch3\u003e同版本中文手册定义\u003c/h3\u003e\u003cp\u003e登录到这个后端的用户的 OID\u003c/p\u003e\u003cp\u003e\u003ca href=\"/zh/docs/18/monitoring-stats.html#\"\u003e查看完整中文手册与上下文\u003c/a\u003e。\u003c/p\u003e","documented":true,"facts":[{"label":"View","value":"pg_stat_activity"},{"label":"Field","value":"usesysid"},{"label":"SQL type","value":"oid"},{"label":"Units named in the field definition","value":"Not specified"},{"label":"Reset observation","value":"No stats_reset field is documented for this view"}],"facts_zh":[{"label":"视图","value":"pg_stat_activity"},{"label":"字段","value":"usesysid"},{"label":"SQL 类型","value":"oid"},{"label":"字段定义记载的单位","value":"未指定"},{"label":"重置条件","value":"手册未为此视图记载 stats_reset 字段"}],"field":"usesysid","manual_html":"","manual_path":"/docs/18/monitoring-stats.html","related":[{"label":"pg_stat_activity columns","url":"/wiki/catalog/pg_stat_activity/?v=18"},{"label":"Statistics collection and reset functions","url":"/docs/18/monitoring-stats.html"}],"release":{"channel":"stable","label":"18.6","major":"18","ref":"https://ftp.postgresql.org/pub/source/v18.6/postgresql-18.6.tar.bz2","revision":"555610c24d53e4316da5b7d3fc25c279d96856d5e0e23ee308c328c5fa881d9f"},"sections":[{"paragraphs":["The pg_stat_activity view will have one row per server process, showing information related to the current activity of that process."],"title":"View semantics"},{"paragraphs":["Read the same-version statistics collection and view documentation below for reset scope and visibility. 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