{"Entry":{"collection":"psql","key":"cmd-64-61","name":"\\da","aliases":["\\da","\\daS","\\daSx","\\dax"],"metadata":{"aliases":["\\da","\\daS","\\daSx","\\dax"],"category":"Describe database objects","content_hash":"ff0351c21b91c110382c533dd9211f7e0aa5b9e2063684512dca2b30e85da176","derived_content_hash":"19e549ec918815245a16aef137c27c5362b2782dcb9e63e26cbe5c19ae115edd","documentation_refresh":{"batch":"20261113","original_source_rev":"","versions":{"14":"14.25","15":"15.20","16":"16.16","17":"17.12","18":"18.7","19":"19rc2"}},"imported_at":"2026-09-30T00:40:44.839785+08:00","name":"\\da","name_zh":"","slug":"cmd-64-61","summary":"Lists aggregate functions, together with their return type and the data types they operate on. If pattern is specified, only aggregates whose names match the pattern are shown. By default, only user-created objects are shown; supply a pattern or the S modifier to include system objects. If x is appended to the command name, the results are displayed in expanded mode."}},"Definition":{"Collection":"psql","Key":"cmd-64-61","SourceDatabase":"center","Version":"18","SourceTable":"psql_command","SourceKey":"cmd-64-61","SourceRevision":"1b2d62b4845aa46374f2cb680f95d3392322cc8128646992ae4e18d0e7084915","Facts":{"command":"\\da","comparison_data":{"definition":"Lists aggregate functions, together with their return type and the data types they operate on. If pattern is specified, only aggregates whose names match the pattern are shown. By default, only user-created objects are shown; supply a pattern or the S modifier to include system objects. If x is appended to the command name, the results are displayed in expanded mode.","modifiers":[{"command":"\\da","modifiers":"Sx"}],"signature":"\\da[Sx] [ pattern ]","spellings":["\\da"]},"comparison_hash":"4a885d2618c4b90051a5da783c89eee0c7f19d5fc714db01801d61e0c7b9541c","description":["Lists aggregate functions, together with their return type and the data types they operate on. If pattern is specified, only aggregates whose names match the pattern are shown. By default, only user-created objects are shown; supply a pattern or the S modifier to include system objects. If x is appended to the command name, the results are displayed in expanded mode."],"description_zh":"列出聚合函数，以及它们的返回类型和所作用的数据类型。如果指定了 pattern ，则只显示名称与模式匹配的聚合。默认情况下，只显示用户创建的对象；提供模式或 S 修饰符可包括系统对象。如果在命令名后追加 x ，结果会以扩展模式显示。","description_zh_html":"\u003cdd\u003e\u003cp\u003e\n        列出聚合函数，以及它们的返回类型和所作用的数据类型。如果指定了 \u003cem class=\"replaceable\"\u003e\u003ccode\u003epattern\u003c/code\u003e\u003c/em\u003e，则只显示名称与模式匹配的聚合。默认情况下，只显示用户创建的对象；提供模式或 \u003ccode class=\"literal\"\u003eS\u003c/code\u003e 修饰符可包括系统对象。如果在命令名后追加 \u003ccode class=\"literal\"\u003ex\u003c/code\u003e，结果会以扩展模式显示。\n        \u003c/p\u003e\u003c/dd\u003e","documentation_revision":{"inputs":[{"file":"app-psql.html","kind":"same-version-reviewed-manual","locale":"en","sha256":"af50448485df02bdef2b72b8347192ba029c7082b8d0392ecb17db44ad533aaf","version":"18.7"},{"file":"app-psql.html","kind":"same-version-reviewed-manual","locale":"zh-Hans","sha256":"cb475c53a16d9e06358f5e6c9c5649645db92568cfd319f230c62c9f57ae090b","version":"18.7"}],"release":"18.7","runtime_remeasured":false,"source_revision":"pgdoc:b9f0e7232f60f380d642ac9b99226606c254b552"},"facts":[{"label":"Client","value":"psql 18.7"},{"label":"Case-sensitive spelling","value":"\\da"}],"facts_zh":[{"label":"客户端","value":"psql 18.7"},{"label":"区分大小写的写法","value":"\\da"}],"localization":{"documentation_release":"18.7","language":"en","source_language":"en","source_revision":"pgdoc:b9f0e7232f60f380d642ac9b99226606c254b552","status":"same-version-reviewed-manual"},"manual_html":"\u003cdiv\u003e\u003cdl class=\"variablelist\"\u003e\u003cdt id=\"APP-PSQL-META-COMMAND-DA-LC\"\u003e\u003cspan class=\"term\"\u003e\u003ccode class=\"literal\"\u003e\\da[Sx] [ \u003ca class=\"link\" href=\"/docs/18/app-psql.html#APP-PSQL-PATTERNS\" title=\"Patterns\"\u003e\u003cem class=\"replaceable\"\u003e\u003ccode\u003epattern\u003c/code\u003e\u003c/em\u003e\u003c/a\u003e ]\u003c/code\u003e\u003c/span\u003e \u003c/dt\u003e\u003cdd\u003e\u003cp\u003e\n        Lists aggregate functions, together with their\n        return type and the data types they operate on. If \u003cem class=\"replaceable\"\u003e\u003ccode\u003epattern\u003c/code\u003e\u003c/em\u003e\n        is specified, only aggregates whose names match the pattern are shown.\n        By default, only user-created objects are shown;  supply a\n        pattern or the \u003ccode class=\"literal\"\u003eS\u003c/code\u003e modifier to include system\n        objects.\n        If \u003ccode class=\"literal\"\u003ex\u003c/code\u003e is appended to the command name, the results\n        are displayed in expanded mode.\n        \u003c/p\u003e\u003c/dd\u003e\u003c/dl\u003e\u003c/div\u003e","manual_path":"app-psql.html#APP-PSQL-META-COMMAND-DA-LC","modifiers":[{"command":"\\da","modifiers":"Sx"}],"related":[{"label":"psql command-line options and complete manual","url":"/wiki/tool/psql/?v=18"}],"related_zh":[{"label":"psql 命令行选项及完整手册","url":"/wiki/tool/psql/?v=18"}],"release":{"channel":"stable","evidence_kind":"English manual and source declarations","label":"18.7","major":"18","manifest":{"major":"18","release":"18.7","source_sha256":"441dfae4280cae3e0425e5f876f80559fb0731c140f1aae22b3e5a54d0411bfd","source_url":"https://ftp.postgresql.org/pub/source/v18.7/postgresql-18.7.tar.bz2"},"ref":"https://ftp.postgresql.org/pub/source/v18.7/postgresql-18.7.tar.bz2","revision":"1b2d62b4845aa46374f2cb680f95d3392322cc8128646992ae4e18d0e7084915","source_sha256":"441dfae4280cae3e0425e5f876f80559fb0731c140f1aae22b3e5a54d0411bfd"},"sections":[],"sections_zh":[],"signature":"\\da[Sx] [ pattern ]","sources":[{"anchor":"APP-PSQL-META-COMMAND-DA-LC","file":"app-psql.html","label":"18.7 English manual · app-psql.html","sha256":"af50448485df02bdef2b72b8347192ba029c7082b8d0392ecb17db44ad533aaf","url":"/docs/18/app-psql.html#APP-PSQL-META-COMMAND-DA-LC"}],"spellings":["\\da"],"tables":[{"columns":[{"key":"command","label":"Command"},{"key":"modifiers","label":"Documented suffix modifiers"}],"key":"spellings","rows":[{"command":{"text":"\\da","url":"/wiki/psql/cmd-64-61/?v=18"},"modifiers":"Sx"}],"title":"Spellings in this manual definition"}],"tables_zh":[{"columns":[{"key":"command","label":"命令"},{"key":"modifiers","label":"手册中的后缀修饰符"}],"key":"spellings","rows":[{"command":{"text":"\\da","url":"/wiki/psql/cmd-64-61/?v=18"},"modifiers":"Sx"}],"title":"本版手册中的写法"}],"zh_from":"same-version-manual"},"ManualEvidence":{"manual_path":"app-psql.html#APP-PSQL-META-COMMAND-DA-LC","release":{"channel":"stable","evidence_kind":"English manual and source declarations","label":"18.7","major":"18","manifest":{"major":"18","release":"18.7","source_sha256":"441dfae4280cae3e0425e5f876f80559fb0731c140f1aae22b3e5a54d0411bfd","source_url":"https://ftp.postgresql.org/pub/source/v18.7/postgresql-18.7.tar.bz2"},"ref":"https://ftp.postgresql.org/pub/source/v18.7/postgresql-18.7.tar.bz2","revision":"1b2d62b4845aa46374f2cb680f95d3392322cc8128646992ae4e18d0e7084915","source_sha256":"441dfae4280cae3e0425e5f876f80559fb0731c140f1aae22b3e5a54d0411bfd"},"sources":[{"anchor":"APP-PSQL-META-COMMAND-DA-LC","file":"app-psql.html","label":"18.7 English manual · app-psql.html","sha256":"af50448485df02bdef2b72b8347192ba029c7082b8d0392ecb17db44ad533aaf","url":"/docs/18/app-psql.html#APP-PSQL-META-COMMAND-DA-LC"}]},"MeasuredEvidence":{}},"Text":{"Collection":"psql","Key":"cmd-64-61","SourceDatabase":"center","Version":"18","Locale":"en","Title":"\\da","Summary":"Lists aggregate functions, together with their return type and the data types they operate on. If pattern is specified, only aggregates whose names match the pattern are shown. By default, only user-created objects are shown; supply a pattern or the S modifier to include system objects. If x is appended to the command name, the results are displayed in expanded mode.","BodyHTML":"\u003cdiv\u003e\u003cdl\u003e\u003cdt id=\"APP-PSQL-META-COMMAND-DA-LC\"\u003e\u003cspan\u003e\u003ccode\u003e\\da[Sx] [ \u003ca href=\"/docs/18/app-psql.html#APP-PSQL-PATTERNS\" title=\"Patterns\" rel=\"nofollow\"\u003e\u003cem\u003e\u003ccode\u003epattern\u003c/code\u003e\u003c/em\u003e\u003c/a\u003e ]\u003c/code\u003e\u003c/span\u003e \u003c/dt\u003e\u003cdd\u003e\u003cp\u003e\n        Lists aggregate functions, together with their\n        return type and the data types they operate on. If \u003cem\u003e\u003ccode\u003epattern\u003c/code\u003e\u003c/em\u003e\n        is specified, only aggregates whose names match the pattern are shown.\n        By default, only user-created objects are shown;  supply a\n        pattern or the \u003ccode\u003eS\u003c/code\u003e modifier to include system\n        objects.\n        If \u003ccode\u003ex\u003c/code\u003e is appended to the command name, the results\n        are displayed in expanded mode.\n        \u003c/p\u003e\u003c/dd\u003e\u003c/dl\u003e\u003c/div\u003e","SourceRevision":"1b2d62b4845aa46374f2cb680f95d3392322cc8128646992ae4e18d0e7084915","ContentHash":"e8397c59b2d6d795891bc6449cb2536a296af7cfa8ed2496ca0b96355bf42f01","Payload":{"description":["Lists aggregate functions, together with their return type and the data types they operate on. If pattern is specified, only aggregates whose names match the pattern are shown. By default, only user-created objects are shown; supply a pattern or the S modifier to include system objects. If x is appended to the command name, the results are displayed in expanded mode."],"manual_html":"\u003cdiv\u003e\u003cdl class=\"variablelist\"\u003e\u003cdt id=\"APP-PSQL-META-COMMAND-DA-LC\"\u003e\u003cspan class=\"term\"\u003e\u003ccode class=\"literal\"\u003e\\da[Sx] [ \u003ca class=\"link\" href=\"/docs/18/app-psql.html#APP-PSQL-PATTERNS\" title=\"Patterns\"\u003e\u003cem class=\"replaceable\"\u003e\u003ccode\u003epattern\u003c/code\u003e\u003c/em\u003e\u003c/a\u003e ]\u003c/code\u003e\u003c/span\u003e \u003c/dt\u003e\u003cdd\u003e\u003cp\u003e\n        Lists aggregate functions, together with their\n        return type and the data types they operate on. If \u003cem class=\"replaceable\"\u003e\u003ccode\u003epattern\u003c/code\u003e\u003c/em\u003e\n        is specified, only aggregates whose names match the pattern are shown.\n        By default, only user-created objects are shown;  supply a\n        pattern or the \u003ccode class=\"literal\"\u003eS\u003c/code\u003e modifier to include system\n        objects.\n        If \u003ccode class=\"literal\"\u003ex\u003c/code\u003e is appended to the command name, the results\n        are displayed in expanded mode.\n        \u003c/p\u003e\u003c/dd\u003e\u003c/dl\u003e\u003c/div\u003e","related":[{"label":"psql command-line options and complete manual","url":"/wiki/tool/psql/?v=18"}],"sections":[],"tables":[{"columns":[{"key":"command","label":"Command"},{"key":"modifiers","label":"Documented suffix modifiers"}],"key":"spellings","rows":[{"command":{"text":"\\da","url":"/wiki/psql/cmd-64-61/?v=18"},"modifiers":"Sx"}],"title":"Spellings in this manual definition"}]}},"RequestedLocale":"en","Fallback":false,"Versions":["10","11","12","13","14","15","16","17","18","19","20"],"Locales":["en","zh-Hans"],"Signatures":null,"Spellings":[{"Version":"18","Ordinal":0,"Command":"\\da","Signature":"\\da[Sx] [ pattern ]","Modifiers":[{"command":"\\da","modifiers":"Sx"}]}],"SQLState":null,"Evidence":null}