{"Entry":{"collection":"psql","key":"cmd-64-58","name":"\\dX","aliases":["\\dX","\\dX+","\\dXx","\\dXx+"],"metadata":{"aliases":["\\dX","\\dX+","\\dXx","\\dXx+"],"category":"Describe database objects","content_hash":"77e98b623d93139bc9cee9d50c5692eb3cd94897a7a31fce3b0a7182e3d1f855","derived_content_hash":"d677b0f4a213cfe93ba6913c5233944df57819f81b54a26d9e55b855a6c42261","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":"2026-09-30T00:40:44.836035+08:00","name":"\\dX","name_zh":"","slug":"cmd-64-58","summary":"Lists extended statistics. If pattern is specified, only those extended statistics whose names match the pattern are listed. If x is appended to the command name, the results are displayed in expanded mode. If + is appended to the command name, each object is listed with its associated description."}},"Definition":{"Collection":"psql","Key":"cmd-64-58","SourceDatabase":"center","Version":"18","SourceTable":"psql_command","SourceKey":"cmd-64-58","SourceRevision":"1b2d62b4845aa46374f2cb680f95d3392322cc8128646992ae4e18d0e7084915","Facts":{"command":"\\dX","comparison_data":{"definition":"Lists extended statistics. If pattern is specified, only those extended statistics whose names match the pattern are listed. If x is appended to the command name, the results are displayed in expanded mode. The status of each kind of extended statistics is shown in a column named after its statistic kind (e.g. Ndistinct). defined means that it was requested when creating the statistics, and NULL means it wasn't requested. You can use pg_stats_ext if you'd like to know whether ANALYZE was run and statistics are available to the planner.","modifiers":[{"command":"\\dX","modifiers":"x"}],"signature":"\\dX[x] [ pattern ]","spellings":["\\dX"]},"comparison_hash":"7d57c7a90cc5537c52b133cd7775b49b853bbfdfb4f13def0a7a596b42b3ae29","description":["Lists extended statistics. If pattern is specified, only those extended statistics whose names match the pattern are listed. If x is appended to the command name, the results are displayed in expanded mode."],"description_zh":"列出扩展统计信息。如果指定了 pattern ，则只列出名称与模式匹配的扩展统计信息。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        列出扩展统计信息。如果指定了 \u003cem class=\"replaceable\"\u003e\u003ccode\u003epattern\u003c/code\u003e\u003c/em\u003e，则只列出名称与模式匹配的扩展统计信息。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\u003cp\u003e\n        每种扩展统计信息的状态显示在以其统计类型命名的列中（例如 Ndistinct）。\u003ccode class=\"literal\"\u003edefined\u003c/code\u003e 表示在创建统计信息时请求了该信息，NULL 表示未请求。如果想知道是否已经运行了 \u003ca class=\"link\" href=\"/zh/docs/18/sql-analyze.html\" title=\"ANALYZE\"\u003e\u003ccode class=\"command\"\u003eANALYZE\u003c/code\u003e\u003c/a\u003e，以及这些统计信息是否已经对规划器可用，可以查看 \u003ccode class=\"structname\"\u003epg_stats_ext\u003c/code\u003e。\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":"\\dX"}],"facts_zh":[{"label":"客户端","value":"psql 18.7"},{"label":"区分大小写的写法","value":"\\dX"}],"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-DX-UC\"\u003e\u003cspan class=\"term\"\u003e\u003ccode class=\"literal\"\u003e\\dX[x] [ \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 extended statistics.\n        If \u003cem class=\"replaceable\"\u003e\u003ccode\u003epattern\u003c/code\u003e\u003c/em\u003e\n        is specified, only those extended statistics whose names match the\n        pattern are listed.\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\u003cp\u003e\n        The status of each kind of extended statistics is shown in a column\n        named after its statistic kind (e.g. Ndistinct).\n        \u003ccode class=\"literal\"\u003edefined\u003c/code\u003e means that it was requested when creating\n        the statistics, and NULL means it wasn't requested.\n        You can use \u003ccode class=\"structname\"\u003epg_stats_ext\u003c/code\u003e if you'd like to\n        know whether \u003ca class=\"link\" href=\"/docs/18/sql-analyze.html\" title=\"ANALYZE\"\u003e\u003ccode class=\"command\"\u003eANALYZE\u003c/code\u003e\u003c/a\u003e\n        was run and statistics are available to the planner.\n        \u003c/p\u003e\u003c/dd\u003e\u003c/dl\u003e\u003c/div\u003e","manual_path":"app-psql.html#APP-PSQL-META-COMMAND-DX-UC","modifiers":[{"command":"\\dX","modifiers":"x"}],"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":"\\dX[x] [ pattern ]","sources":[{"anchor":"APP-PSQL-META-COMMAND-DX-UC","file":"app-psql.html","label":"18.7 English manual · app-psql.html","sha256":"af50448485df02bdef2b72b8347192ba029c7082b8d0392ecb17db44ad533aaf","url":"/docs/18/app-psql.html#APP-PSQL-META-COMMAND-DX-UC"}],"spellings":["\\dX"],"tables":[{"columns":[{"key":"command","label":"Command"},{"key":"modifiers","label":"Documented suffix modifiers"}],"key":"spellings","rows":[{"command":{"text":"\\dX","url":"/wiki/psql/cmd-64-58/?v=18"},"modifiers":"x"}],"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":"\\dX","url":"/wiki/psql/cmd-64-58/?v=18"},"modifiers":"x"}],"title":"本版手册中的写法"}],"zh_from":"same-version-manual"},"ManualEvidence":{"manual_path":"app-psql.html#APP-PSQL-META-COMMAND-DX-UC","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-DX-UC","file":"app-psql.html","label":"18.7 English manual · app-psql.html","sha256":"af50448485df02bdef2b72b8347192ba029c7082b8d0392ecb17db44ad533aaf","url":"/docs/18/app-psql.html#APP-PSQL-META-COMMAND-DX-UC"}]},"MeasuredEvidence":{}},"Text":{"Collection":"psql","Key":"cmd-64-58","SourceDatabase":"center","Version":"18","Locale":"en","Title":"\\dX","Summary":"Lists extended statistics. If pattern is specified, only those extended statistics whose names match the pattern are listed. 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-DX-UC\"\u003e\u003cspan\u003e\u003ccode\u003e\\dX[x] [ \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 extended statistics.\n        If \u003cem\u003e\u003ccode\u003epattern\u003c/code\u003e\u003c/em\u003e\n        is specified, only those extended statistics whose names match the\n        pattern are listed.\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\u003cp\u003e\n        The status of each kind of extended statistics is shown in a column\n        named after its statistic kind (e.g. Ndistinct).\n        \u003ccode\u003edefined\u003c/code\u003e means that it was requested when creating\n        the statistics, and NULL means it wasn\u0026#39;t requested.\n        You can use \u003ccode\u003epg_stats_ext\u003c/code\u003e if you\u0026#39;d like to\n        know whether \u003ca href=\"/docs/18/sql-analyze.html\" title=\"ANALYZE\" rel=\"nofollow\"\u003e\u003ccode\u003eANALYZE\u003c/code\u003e\u003c/a\u003e\n        was run and statistics are available to the planner.\n        \u003c/p\u003e\u003c/dd\u003e\u003c/dl\u003e\u003c/div\u003e","SourceRevision":"1b2d62b4845aa46374f2cb680f95d3392322cc8128646992ae4e18d0e7084915","ContentHash":"811578bd83641baa7c98bafbc17e17fba2871e81cad57737a5bbc1cd3e63ceb1","Payload":{"description":["Lists extended statistics. If pattern is specified, only those extended statistics whose names match the pattern are listed. 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-DX-UC\"\u003e\u003cspan class=\"term\"\u003e\u003ccode class=\"literal\"\u003e\\dX[x] [ \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 extended statistics.\n        If \u003cem class=\"replaceable\"\u003e\u003ccode\u003epattern\u003c/code\u003e\u003c/em\u003e\n        is specified, only those extended statistics whose names match the\n        pattern are listed.\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\u003cp\u003e\n        The status of each kind of extended statistics is shown in a column\n        named after its statistic kind (e.g. Ndistinct).\n        \u003ccode class=\"literal\"\u003edefined\u003c/code\u003e means that it was requested when creating\n        the statistics, and NULL means it wasn't requested.\n        You can use \u003ccode class=\"structname\"\u003epg_stats_ext\u003c/code\u003e if you'd like to\n        know whether \u003ca class=\"link\" href=\"/docs/18/sql-analyze.html\" title=\"ANALYZE\"\u003e\u003ccode class=\"command\"\u003eANALYZE\u003c/code\u003e\u003c/a\u003e\n        was run and statistics are available to the planner.\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":"\\dX","url":"/wiki/psql/cmd-64-58/?v=18"},"modifiers":"x"}],"title":"Spellings in this manual definition"}]}},"RequestedLocale":"en","Fallback":false,"Versions":["14","15","16","17","18","19","20"],"Locales":["en","zh-Hans"],"Signatures":null,"Spellings":[{"Version":"18","Ordinal":0,"Command":"\\dX","Signature":"\\dX[x] [ pattern ]","Modifiers":[{"command":"\\dX","modifiers":"x"}]}],"SQLState":null,"Evidence":null}