{"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","derived_content_hash":"b9e7dfae70226ddd8397977dd91682cd95f5a849f89dace3ea21eb193f84633f","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"],"repair_provenance":{"original_source_revision":"a709ab85","receipt_sha256":"313ac1d41062722ff4f1dcb408a453ae03086def02c3cfed26b07f39eadcb6d1","repair":"wiki-repair-20261023"},"slug":"drop-materialized-view","source_rev":"wiki-repair-20261023:e688515d68e0e53e2cb6b5e53ae0e512fee39b59880372afe87d0d7d8937f524","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":"wiki-repair-20261023:e688515d68e0e53e2cb6b5e53ae0e512fee39b59880372afe87d0d7d8937f524","Facts":{"anchor":"SQL-DROPMATERIALIZEDVIEW","description_zh":"移除一个物化视图","description_zh_html":"\u003cpre\u003eDROP MATERIALIZED VIEW [ IF EXISTS ] name [, ...] [ CASCADE | RESTRICT ]\u003c/pre\u003e\u003csection\u003e\u003ch2\u003e描述\u003c/h2\u003e\u003cp\u003e\n\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。\n  \u003c/p\u003e\u003c/section\u003e\u003csection\u003e\u003ch2\u003e参数\u003c/h2\u003e\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\n      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。\n     \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\n      要移除的物化视图名称（可以被模式限定）。\n     \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\n      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 class=\"xref\" href=\"/zh/docs/18/ddl-depend.html\" title=\"5.15. 依赖跟踪\"\u003e第 5.15 节\u003c/a\u003e）。\n     \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\n      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。\n     \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\n   这个命令将移除名为 \u003ccode class=\"literal\"\u003eorder_summary\u003c/code\u003e 的物化视图：\n\u003c/p\u003e\u003cpre class=\"programlisting\"\u003e\nDROP MATERIALIZED VIEW order_summary;\n\u003c/pre\u003e\u003c/section\u003e\u003csection\u003e\u003ch2\u003e兼容性\u003c/h2\u003e\u003cp\u003e\n\u003ccode class=\"command\"\u003eDROP MATERIALIZED VIEW\u003c/code\u003e 是一种 \u003cspan class=\"productname\"\u003ePostgreSQL\u003c/span\u003e 扩展。\n  \u003c/p\u003e\u003c/section\u003e\u003csection\u003e\u003ch2\u003e另见\u003c/h2\u003e\u003cspan class=\"simplelist\"\u003e\u003ca class=\"xref\" href=\"/zh/docs/18/sql-creatematerializedview.html\" title=\"CREATE MATERIALIZED VIEW\"\u003e\u003cspan class=\"refentrytitle\"\u003eCREATE MATERIALIZED VIEW\u003c/span\u003e\u003c/a\u003e, \u003ca class=\"xref\" href=\"/zh/docs/18/sql-altermaterializedview.html\" title=\"ALTER MATERIALIZED VIEW\"\u003e\u003cspan class=\"refentrytitle\"\u003eALTER MATERIALIZED VIEW\u003c/span\u003e\u003c/a\u003e, \u003ca class=\"xref\" href=\"/zh/docs/18/sql-refreshmaterializedview.html\" title=\"REFRESH MATERIALIZED VIEW\"\u003e\u003cspan class=\"refentrytitle\"\u003eREFRESH MATERIALIZED VIEW\u003c/span\u003e\u003c/a\u003e\u003c/span\u003e\u003c/section\u003e","file":"sql-dropmaterializedview.html","lang":"en","name":"DROP MATERIALIZED VIEW","purpose":"remove a materialized view","purpose_zh":"移除一个物化视图","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 ]","translation_provenance":{"inputs":[{"kind":"current-pgdoc-translation","path":"/Users/vonng/pgsty/pgdoc/zh/18/html/sql-dropmaterializedview.html","sha256":"54db543e6d5a0434ebdb5a8d66411d59c8fd427e2a9b534ca68a142a7f7fd625"}],"kind":"same-version-pgdoc","locale":"zh-Hans","source_revision":"b1b500221dbe5437cfca004d6b04d3f6e422765d","version":"18"},"zh_from":"same-version-pgdoc"},"ManualEvidence":{},"MeasuredEvidence":{}},"Text":{"Collection":"sql","Key":"drop-materialized-view","SourceDatabase":"center","Version":"18","Locale":"en","Title":"DROP MATERIALIZED VIEW","Summary":"remove a materialized view","BodyHTML":"\u003cpre\u003eDROP MATERIALIZED VIEW [ IF EXISTS ] name [, ...] [ CASCADE | RESTRICT ]\u003c/pre\u003e\u003csection\u003e\u003ch2\u003eDescription\u003c/h2\u003e\u003cp\u003e\u003ccode\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\u003c/section\u003e\u003csection\u003e\u003ch2\u003eParameters\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\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\u003e\u003cem\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\u003e\u003ccode\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\" rel=\"nofollow\"\u003eSection 5.15\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\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\u003c/section\u003e\u003csection\u003e\u003ch2\u003eExamples\u003c/h2\u003e\u003cp\u003eThis command will remove the materialized view called \u003ccode\u003eorder_summary\u003c/code\u003e:\u003c/p\u003e\u003cpre\u003eDROP MATERIALIZED VIEW order_summary;\n\u003c/pre\u003e\u003c/section\u003e\u003csection\u003e\u003ch2\u003eCompatibility\u003c/h2\u003e\u003cp\u003e\u003ccode\u003eDROP MATERIALIZED VIEW\u003c/code\u003e is a \u003cspan\u003ePostgreSQL\u003c/span\u003e extension.\u003c/p\u003e\u003c/section\u003e\u003csection\u003e\u003ch2\u003eSee Also\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":"wiki-repair-20261023:e688515d68e0e53e2cb6b5e53ae0e512fee39b59880372afe87d0d7d8937f524","ContentHash":"adb5749e3ebdef3a6f5969c6c1a60668a6704845dd14be99e0e59408693417ef","Payload":{"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":"","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":"en","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}