{"Entry":{"collection":"sql","key":"drop-materialized-view","name":"DROP MATERIALIZED VIEW","aliases":["dropmaterializedview"],"metadata":{"aliases":["dropmaterializedview"],"changed_in":[],"changes":[{"from":"9.2","purpose_changed":false,"renamed":null,"sections":{"added":[],"changed":[],"removed":[]},"status":"added","synopsis":null,"to":"9.3"},{"from":"9.5","purpose_changed":false,"renamed":null,"sections":{"added":[],"changed":["parameters"],"removed":[]},"status":"changed","synopsis":null,"to":"9.6"},{"from":"11","purpose_changed":false,"renamed":null,"sections":{"added":[],"changed":["parameters"],"removed":[]},"status":"changed","synopsis":null,"to":"12"},{"from":"16","purpose_changed":false,"renamed":null,"sections":{"added":[],"changed":["parameters"],"removed":[]},"status":"changed","synopsis":null,"to":"17"},{"from":"18","purpose_changed":false,"renamed":null,"sections":{"added":[],"changed":["parameters"],"removed":[]},"status":"changed","synopsis":null,"to":"19"}],"content_hash":"59828df080596494b42bdabc4f946ca8a9337a30aa1ef5b8c0f88edfa4cf6c75","editorial":{},"first_version":"9.3","group":"table","imported_at":"2026-09-30T17:43:35.932658+08:00","last_version":"20","name":"DROP MATERIALIZED VIEW","object":"MATERIALIZED VIEW","position":3,"present_in":["9.3","9.4","9.5","9.6","10","11","12","13","14","15","16","17","18","19","20"],"purpose":"remove a materialized view","purpose_zh":"","related":["create-materialized-view","alter-materialized-view","refresh-materialized-view"],"slug":"drop-materialized-view","source_rev":"a709ab85","synopsis":"DROP MATERIALIZED VIEW [ IF EXISTS ] name [, ...] [ CASCADE | RESTRICT ]","verb":"DROP"}},"Definition":{"Collection":"sql","Key":"drop-materialized-view","SourceDatabase":"center","Version":"18","SourceTable":"sqlcmd","SourceKey":"drop-materialized-view","SourceRevision":"a709ab85","Facts":{"anchor":"SQL-DROPMATERIALIZEDVIEW","file":"sql-dropmaterializedview.html","lang":"en","name":"DROP MATERIALIZED VIEW","purpose":"remove a materialized view","purpose_zh":"","related":["create-materialized-view","alter-materialized-view","refresh-materialized-view"],"sections":[{"html":"\u003cp\u003e\u003ccode class=\"command\"\u003eDROP MATERIALIZED VIEW\u003c/code\u003e drops an existing materialized view. To execute this command you must be the owner of the materialized view.\u003c/p\u003e","key":"description","title":"Description"},{"html":"\u003cdiv class=\"variablelist\"\u003e\u003cdl class=\"variablelist\"\u003e\u003cdt\u003e\u003cspan class=\"term\"\u003e\u003ccode class=\"literal\"\u003eIF EXISTS\u003c/code\u003e\u003c/span\u003e\u003c/dt\u003e\u003cdd\u003e\u003cp\u003eDo not throw an error if the materialized view does not exist. A notice is issued in this case.\u003c/p\u003e\u003c/dd\u003e\u003cdt\u003e\u003cspan class=\"term\"\u003e\u003cem class=\"replaceable\"\u003e\u003ccode\u003ename\u003c/code\u003e\u003c/em\u003e\u003c/span\u003e\u003c/dt\u003e\u003cdd\u003e\u003cp\u003eThe name (optionally schema-qualified) of the materialized view to remove.\u003c/p\u003e\u003c/dd\u003e\u003cdt\u003e\u003cspan class=\"term\"\u003e\u003ccode class=\"literal\"\u003eCASCADE\u003c/code\u003e\u003c/span\u003e\u003c/dt\u003e\u003cdd\u003e\u003cp\u003eAutomatically drop objects that depend on the materialized view (such as other materialized views, or regular views), and in turn all objects that depend on those objects (see \u003ca href=\"/docs/18/ddl-depend.html\" title=\"5.15. Dependency Tracking\"\u003eSection 5.15\u003c/a\u003e).\u003c/p\u003e\u003c/dd\u003e\u003cdt\u003e\u003cspan class=\"term\"\u003e\u003ccode class=\"literal\"\u003eRESTRICT\u003c/code\u003e\u003c/span\u003e\u003c/dt\u003e\u003cdd\u003e\u003cp\u003eRefuse to drop the materialized view if any objects depend on it. This is the default.\u003c/p\u003e\u003c/dd\u003e\u003c/dl\u003e\u003c/div\u003e","key":"parameters","title":"Parameters"},{"html":"\u003cp\u003eThis command will remove the materialized view called \u003ccode class=\"literal\"\u003eorder_summary\u003c/code\u003e:\u003c/p\u003e\u003cpre class=\"programlisting\"\u003eDROP MATERIALIZED VIEW order_summary;\n\u003c/pre\u003e","key":"examples","title":"Examples"},{"html":"\u003cp\u003e\u003ccode class=\"command\"\u003eDROP MATERIALIZED VIEW\u003c/code\u003e is a \u003cspan class=\"productname\"\u003ePostgreSQL\u003c/span\u003e extension.\u003c/p\u003e","key":"compatibility","title":"Compatibility"},{"html":"\u003cspan class=\"simplelist\"\u003e\u003ca href=\"/wiki/sql/create-materialized-view/?v=18\" title=\"CREATE MATERIALIZED VIEW\"\u003e\u003cspan class=\"refentrytitle\"\u003eCREATE MATERIALIZED VIEW\u003c/span\u003e\u003c/a\u003e, \u003ca href=\"/wiki/sql/alter-materialized-view/?v=18\" title=\"ALTER MATERIALIZED VIEW\"\u003e\u003cspan class=\"refentrytitle\"\u003eALTER MATERIALIZED VIEW\u003c/span\u003e\u003c/a\u003e, \u003ca href=\"/wiki/sql/refresh-materialized-view/?v=18\" title=\"REFRESH MATERIALIZED VIEW\"\u003e\u003cspan class=\"refentrytitle\"\u003eREFRESH MATERIALIZED VIEW\u003c/span\u003e\u003c/a\u003e\u003c/span\u003e","key":"see_also","title":"See Also"}],"sections_same_as":"","slug":"18","synopsis_html":"DROP MATERIALIZED VIEW [ IF EXISTS ] \u003cem class=\"replaceable\"\u003e\u003ccode\u003ename\u003c/code\u003e\u003c/em\u003e [, ...] [ CASCADE | RESTRICT ]","synopsis_text":"DROP MATERIALIZED VIEW [ IF EXISTS ] name [, ...] [ CASCADE | RESTRICT ]"},"ManualEvidence":{},"MeasuredEvidence":{}},"Text":{"Collection":"sql","Key":"drop-materialized-view","SourceDatabase":"pgweb","Version":"18","Locale":"zh-Hans","Title":"DROP MATERIALIZED VIEW","Summary":"移除一个物化视图","BodyHTML":"\u003cpre\u003eDROP MATERIALIZED VIEW [ IF EXISTS ] name [, ...] [ CASCADE | RESTRICT ]\u003c/pre\u003e\u003csection\u003e\u003ch2\u003e描述\u003c/h2\u003e\u003cp\u003e\u003ccode\u003eDROP MATERIALIZED VIEW\u003c/code\u003e删除一个现有的物化视图。要执行此命令，你必须是该物化视图的拥有者。\u003c/p\u003e\u003c/section\u003e\u003csection\u003e\u003ch2\u003e参数\u003c/h2\u003e\u003cdiv\u003e\u003cdl\u003e\u003cdt\u003e\u003cspan\u003e\u003ccode\u003eIF EXISTS\u003c/code\u003e\u003c/span\u003e\u003c/dt\u003e\u003cdd\u003e\u003cp\u003e如果该物化视图不存在，则不要抛出错误。这种情况下会发出一个提示。\u003c/p\u003e\u003c/dd\u003e\u003cdt\u003e\u003cspan\u003e\u003cem\u003e\u003ccode\u003ename\u003c/code\u003e\u003c/em\u003e\u003c/span\u003e\u003c/dt\u003e\u003cdd\u003e\u003cp\u003e要移除的物化视图名称（可以被模式限定）。\u003c/p\u003e\u003c/dd\u003e\u003cdt\u003e\u003cspan\u003e\u003ccode\u003eCASCADE\u003c/code\u003e\u003c/span\u003e\u003c/dt\u003e\u003cdd\u003e\u003cp\u003e自动删除依赖于该物化视图的对象（例如其他物化视图或普通视图），以及进一步依赖于这些对象的所有对象（参见\u003ca href=\"/docs/18/ddl-depend.html\" rel=\"nofollow\"\u003e第 5.15 节\u003c/a\u003e）。\u003c/p\u003e\u003c/dd\u003e\u003cdt\u003e\u003cspan\u003e\u003ccode\u003eRESTRICT\u003c/code\u003e\u003c/span\u003e\u003c/dt\u003e\u003cdd\u003e\u003cp\u003e如果有任何对象依赖于该物化视图，则拒绝删除它。这是默认行为。\u003c/p\u003e\u003c/dd\u003e\u003c/dl\u003e\u003c/div\u003e\u003c/section\u003e\u003csection\u003e\u003ch2\u003e示例\u003c/h2\u003e\u003cp\u003e这个命令将移除名为\u003ccode\u003eorder_summary\u003c/code\u003e的物化视图：\u003c/p\u003e\u003cpre\u003eDROP MATERIALIZED VIEW order_summary;\n\u003c/pre\u003e\u003c/section\u003e\u003csection\u003e\u003ch2\u003e兼容性\u003c/h2\u003e\u003cp\u003e\u003ccode\u003eDROP MATERIALIZED VIEW\u003c/code\u003e是一种\u003cspan\u003ePostgreSQL\u003c/span\u003e扩展。\u003c/p\u003e\u003c/section\u003e\u003csection\u003e\u003ch2\u003e另见\u003c/h2\u003e\u003cspan\u003e\u003ca href=\"/wiki/sql/create-materialized-view/?v=18\" title=\"CREATE MATERIALIZED VIEW\" rel=\"nofollow\"\u003e\u003cspan\u003eCREATE MATERIALIZED VIEW\u003c/span\u003e\u003c/a\u003e, \u003ca href=\"/wiki/sql/alter-materialized-view/?v=18\" title=\"ALTER MATERIALIZED VIEW\" rel=\"nofollow\"\u003e\u003cspan\u003eALTER MATERIALIZED VIEW\u003c/span\u003e\u003c/a\u003e, \u003ca href=\"/wiki/sql/refresh-materialized-view/?v=18\" title=\"REFRESH MATERIALIZED VIEW\" rel=\"nofollow\"\u003e\u003cspan\u003eREFRESH MATERIALIZED VIEW\u003c/span\u003e\u003c/a\u003e\u003c/span\u003e\u003c/section\u003e","SourceRevision":"1b5ca64c","ContentHash":"bcf98f6ac8c991fc59ff4137132a903c86c492310056f3445d6640baa6f53ec8","Payload":{"purpose_zh":"移除一个物化视图","sections":[{"html":"\u003cp\u003e\u003ccode class=\"command\"\u003eDROP MATERIALIZED VIEW\u003c/code\u003e删除一个现有的物化视图。要执行此命令，你必须是该物化视图的拥有者。\u003c/p\u003e","key":"description","title":"描述"},{"html":"\u003cdiv class=\"variablelist\"\u003e\u003cdl class=\"variablelist\"\u003e\u003cdt\u003e\u003cspan class=\"term\"\u003e\u003ccode class=\"literal\"\u003eIF EXISTS\u003c/code\u003e\u003c/span\u003e\u003c/dt\u003e\u003cdd\u003e\u003cp\u003e如果该物化视图不存在，则不要抛出错误。这种情况下会发出一个提示。\u003c/p\u003e\u003c/dd\u003e\u003cdt\u003e\u003cspan class=\"term\"\u003e\u003cem class=\"replaceable\"\u003e\u003ccode\u003ename\u003c/code\u003e\u003c/em\u003e\u003c/span\u003e\u003c/dt\u003e\u003cdd\u003e\u003cp\u003e要移除的物化视图名称（可以被模式限定）。\u003c/p\u003e\u003c/dd\u003e\u003cdt\u003e\u003cspan class=\"term\"\u003e\u003ccode class=\"literal\"\u003eCASCADE\u003c/code\u003e\u003c/span\u003e\u003c/dt\u003e\u003cdd\u003e\u003cp\u003e自动删除依赖于该物化视图的对象（例如其他物化视图或普通视图），以及进一步依赖于这些对象的所有对象（参见\u003ca href=\"/docs/18/ddl-depend.html\" title=\"5.15. 依赖跟踪\"\u003e第 5.15 节\u003c/a\u003e）。\u003c/p\u003e\u003c/dd\u003e\u003cdt\u003e\u003cspan class=\"term\"\u003e\u003ccode class=\"literal\"\u003eRESTRICT\u003c/code\u003e\u003c/span\u003e\u003c/dt\u003e\u003cdd\u003e\u003cp\u003e如果有任何对象依赖于该物化视图，则拒绝删除它。这是默认行为。\u003c/p\u003e\u003c/dd\u003e\u003c/dl\u003e\u003c/div\u003e","key":"parameters","title":"参数"},{"html":"\u003cp\u003e这个命令将移除名为\u003ccode class=\"literal\"\u003eorder_summary\u003c/code\u003e的物化视图：\u003c/p\u003e\u003cpre class=\"programlisting\"\u003eDROP MATERIALIZED VIEW order_summary;\n\u003c/pre\u003e","key":"examples","title":"示例"},{"html":"\u003cp\u003e\u003ccode class=\"command\"\u003eDROP MATERIALIZED VIEW\u003c/code\u003e是一种\u003cspan class=\"productname\"\u003ePostgreSQL\u003c/span\u003e扩展。\u003c/p\u003e","key":"compatibility","title":"兼容性"},{"html":"\u003cspan class=\"simplelist\"\u003e\u003ca href=\"/wiki/sql/create-materialized-view/?v=18\" title=\"CREATE MATERIALIZED VIEW\"\u003e\u003cspan class=\"refentrytitle\"\u003eCREATE MATERIALIZED VIEW\u003c/span\u003e\u003c/a\u003e, \u003ca href=\"/wiki/sql/alter-materialized-view/?v=18\" title=\"ALTER MATERIALIZED VIEW\"\u003e\u003cspan class=\"refentrytitle\"\u003eALTER MATERIALIZED VIEW\u003c/span\u003e\u003c/a\u003e, \u003ca href=\"/wiki/sql/refresh-materialized-view/?v=18\" title=\"REFRESH MATERIALIZED VIEW\"\u003e\u003cspan class=\"refentrytitle\"\u003eREFRESH MATERIALIZED VIEW\u003c/span\u003e\u003c/a\u003e\u003c/span\u003e","key":"see_also","title":"另见"}],"sections_same_as":"","synopsis_html":"DROP MATERIALIZED VIEW [ IF EXISTS ] \u003cem class=\"replaceable\"\u003e\u003ccode\u003ename\u003c/code\u003e\u003c/em\u003e [, ...] [ CASCADE | RESTRICT ]","synopsis_text":"DROP MATERIALIZED VIEW [ IF EXISTS ] name [, ...] [ CASCADE | RESTRICT ]"}},"RequestedLocale":"zh-Hans","Fallback":false,"Versions":["10","11","12","13","14","15","16","17","18","19","20","9.3","9.4","9.5","9.6"],"Locales":["en","zh-Hans"],"Signatures":null,"Spellings":null,"SQLState":null,"Evidence":null}