{"id":20789,"date":"2024-01-02T05:58:22","date_gmt":"2024-01-02T05:58:22","guid":{"rendered":"https:\/\/server.hk\/blog\/20789\/"},"modified":"2024-11-14T10:38:38","modified_gmt":"2024-11-14T02:38:38","slug":"postgresql-command-drop-materialized-view","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/20789\/","title":{"rendered":"PostgreSQL \u547d\u4ee4: DROP MATERIALIZED VIEW"},"content":{"rendered":"<h1 id=\"postgresql-command-drop-materialized-view-ENBHXuvtDD\">PostgreSQL \u547d\u4ee4: DROP MATERIALIZED VIEW<\/h1>\n<p>PostgreSQL \u662f\u4e00\u500b\u5f37\u5927\u7684\u958b\u6e90\u95dc\u806f\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff0c\u63d0\u4f9b\u591a\u7a2e\u529f\u80fd\u8207\u7279\u6027\u3002PostgreSQL \u7684\u4e00\u500b\u4e3b\u8981\u7279\u6027\u662f\u80fd\u5920\u5275\u5efa\u5177\u9ad4\u5316\u8996\u5716\uff0c\u9019\u4e9b\u5177\u9ad4\u5316\u8996\u5716\u662f\u9810\u8a08\u7b97\u7684\u8868\uff0c\u4fdd\u5b58\u67e5\u8a62\u7684\u7d50\u679c\u3002\u900f\u904e\u5f9e\u8996\u5716\u4e2d\u6aa2\u7d22\u6578\u64da\uff0c\u800c\u4e0d\u662f\u6bcf\u6b21\u57f7\u884c\u67e5\u8a62\uff0c\u5177\u9ad4\u5316\u8996\u5716\u80fd\u63d0\u9ad8\u67e5\u8a62\u6548\u80fd\u3002<\/p>\n<h2 id=\"what-is-a-materialized-view-ENBHXuvtDD\">\u751a\u9ebc\u662f\u5177\u9ad4\u5316\u8996\u5716\uff1f<\/h2>\n<p>\u5177\u9ad4\u5316\u8996\u5716\u662f\u4e00\u500b\u5305\u542b\u67e5\u8a62\u7d50\u679c\u7684\u6578\u64da\u5eab\u5c0d\u8c61\u3002\u8207\u666e\u901a\u8996\u5716\u4e0d\u540c\uff0c\u666e\u901a\u8996\u5716\u662f\u865b\u64ec\u8868\uff0c\u4e26\u4e0d\u5b58\u5132\u6578\u64da\uff0c\u800c\u5177\u9ad4\u5316\u8996\u5716\u5247\u6703\u5c07\u6578\u64da\u5be6\u969b\u5b58\u5132\u5728\u78c1\u789f\u4e0a\u3002\u9019\u610f\u5473\u8457\u67e5\u8a62\u7d50\u679c\u6703\u88ab\u8a08\u7b97\u4e26\u5b58\u5132\u5728\u5177\u9ad4\u5316\u8996\u5716\u4e2d\uff0c\u5f9e\u800c\u52a0\u5feb\u6578\u64da\u6aa2\u7d22\u7684\u901f\u5ea6\u3002<\/p>\n<p>\u5177\u9ad4\u5316\u8996\u5716\u5728\u8655\u7406\u6d89\u53ca\u805a\u5408\u3001\u806f\u63a5\u6216\u9ad8\u6602\u8a08\u7b97\u4ee3\u50f9\u7684\u8907\u96dc\u67e5\u8a62\u6642\u5c24\u5176\u6709\u7528\u3002\u900f\u904e\u9810\u5148\u8a08\u7b97\u7d50\u679c\u4e26\u5c07\u5176\u5b58\u5132\u5728\u5177\u9ad4\u5316\u8996\u5716\u4e2d\uff0c\u60a8\u53ef\u4ee5\u986f\u8457\u63d0\u5347\u9019\u4e9b\u67e5\u8a62\u7684\u6548\u80fd\u3002<\/p>\n<h2 id=\"dropping-a-materialized-view-ENBHXuvtDD\">\u522a\u9664\u5177\u9ad4\u5316\u8996\u5716<\/h2>\n<p>\u7576\u60a8\u4e0d\u518d\u9700\u8981\u5177\u9ad4\u5316\u8996\u5716\u6642\uff0c\u53ef\u4ee5\u4f7f\u7528 DROP MATERIALIZED VIEW \u547d\u4ee4\u4f86\u522a\u9664\u5b83\u3002\u522a\u9664\u5177\u9ad4\u5316\u8996\u5716\u7684\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code>DROP MATERIALIZED VIEW [IF EXISTS] view_name;<\/code><\/pre>\n<p><code>IF EXISTS<\/code> \u5b50\u53e5\u662f\u53ef\u9078\u7684\uff0c\u4e26\u5141\u8a31\u60a8\u5728\u5177\u9ad4\u5316\u8996\u5716\u4e0d\u5b58\u5728\u6642\u907f\u514d\u51fa\u73fe\u932f\u8aa4\u3002<\/p>\n<p>\u4f8b\u5982\uff0c\u5047\u8a2d\u60a8\u6709\u4e00\u500b\u540d\u70ba <code>sales_summary<\/code> \u7684\u5177\u9ad4\u5316\u8996\u5716\uff0c\u8a72\u8996\u5716\u5305\u542b\u516c\u53f8\u7684\u92b7\u552e\u6578\u64da\u7e3d\u7d50\u3002\u8981\u522a\u9664\u6b64\u5177\u9ad4\u5316\u8996\u5716\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\uff1a<\/p>\n<pre><code>DROP MATERIALIZED VIEW sales_summary;<\/code><\/pre>\n<p>\u57f7\u884c\u6b64\u547d\u4ee4\u5f8c\uff0c<code>sales_summary<\/code> \u5177\u9ad4\u5316\u8996\u5716\u5c07\u5f9e\u6578\u64da\u5eab\u4e2d\u79fb\u9664\u3002<\/p>\n<h2 id=\"considerations-when-dropping-a-materialized-view-ENBHXuvtDD\">\u522a\u9664\u5177\u9ad4\u5316\u8996\u5716\u6642\u7684\u6ce8\u610f\u4e8b\u9805<\/h2>\n<p>\u5728\u522a\u9664\u5177\u9ad4\u5316\u8996\u5716\u4e4b\u524d\uff0c\u6709\u5e7e\u9ede\u9700\u8981\u8003\u616e\uff1a<\/p>\n<ul>\n<li><strong>\u6578\u64da\u4e1f\u5931\uff1a<\/strong>\u522a\u9664\u5177\u9ad4\u5316\u8996\u5716\u5c07\u6c38\u4e45\u522a\u9664\u5b58\u5132\u5728\u8996\u5716\u4e2d\u7684\u6578\u64da\u3002\u5728\u522a\u9664\u5177\u9ad4\u5316\u8996\u5716\u4e4b\u524d\uff0c\u8acb\u78ba\u4fdd\u5099\u4efd\u4efb\u4f55\u91cd\u8981\u6578\u64da\u3002<\/li>\n<li><strong>\u4f9d\u8cf4\u95dc\u4fc2\uff1a<\/strong>\u5982\u679c\u6709\u4efb\u4f55\u4f9d\u8cf4\u65bc\u5177\u9ad4\u5316\u8996\u5716\u7684\u5176\u4ed6\u6578\u64da\u5eab\u5c0d\u8c61\uff0c\u4f8b\u5982\u7d22\u5f15\u6216\u8996\u5716\uff0c\u60a8\u9700\u8981\u5148\u522a\u9664\u6216\u4fee\u6539\u5b83\u5011\u624d\u80fd\u522a\u9664\u5177\u9ad4\u5316\u8996\u5716\u3002<\/li>\n<\/ul>\n<h2 id=\"conclusion-ENBHXuvtDD\">\u7d50\u8ad6<\/h2>\n<p>PostgreSQL \u4e2d\u7684 DROP MATERIALIZED VIEW \u547d\u4ee4\u5141\u8a31\u60a8\u5f9e\u6578\u64da\u5eab\u4e2d\u522a\u9664\u5177\u9ad4\u5316\u8996\u5716\u3002\u5177\u9ad4\u5316\u8996\u5716\u662f\u4e00\u500b\u5f37\u5927\u7684\u529f\u80fd\uff0c\u5b83\u900f\u904e\u9810\u8a08\u7b97\u548c\u5b58\u5132\u67e5\u8a62\u7d50\u679c\u4f86\u63d0\u9ad8\u67e5\u8a62\u6548\u80fd\u3002\u7136\u800c\uff0c\u5728\u522a\u9664\u5177\u9ad4\u5316\u8996\u5716\u4e4b\u524d\uff0c\u91cd\u8981\u7684\u662f\u8981\u8003\u616e\u6578\u64da\u4e1f\u5931\u548c\u4f9d\u8cf4\u95dc\u4fc2\u7684\u6f5b\u5728\u98a8\u96aa\u3002<\/p>\n<h3 id=\"summary-ENBHXuvtDD\">\u7e3d\u7d50\uff1a<\/h3>\n<p>\u7e3d\u7d50\u4f86\u8aaa\uff0cPostgreSQL \u4e2d\u7684 DROP MATERIALIZED VIEW \u547d\u4ee4\u5141\u8a31\u60a8\u5f9e\u6578\u64da\u5eab\u4e2d\u522a\u9664\u5177\u9ad4\u5316\u8996\u5716\u3002\u5177\u9ad4\u5316\u8996\u5716\u662f\u9810\u8a08\u7b97\u7684\u8868\uff0c\u5b58\u5132\u67e5\u8a62\u7d50\u679c\uff0c\u5f9e\u800c\u63d0\u5347\u67e5\u8a62\u6548\u80fd\u3002\u522a\u9664\u5177\u9ad4\u5316\u8996\u5716\u6642\uff0c\u61c9\u8003\u616e\u6f5b\u5728\u7684\u6578\u64da\u4e1f\u5931\u548c\u4f9d\u8cf4\u95dc\u4fc2\u554f\u984c\u3002\u6b32\u4e86\u89e3\u66f4\u591a VPS \u8a17\u7ba1\u89e3\u6c7a\u65b9\u6848\uff0c\u8acb\u8a2a\u554f <a href=\"https:\/\/server.hk\">Server.HK<\/a>\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>PostgreSQL \u547d\u4ee4: D&#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4924],"tags":[],"class_list":["post-20789","post","type-post","status-publish","format-standard","hentry","category-setup-tutorials"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/20789","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=20789"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/20789\/revisions"}],"predecessor-version":[{"id":24306,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/20789\/revisions\/24306"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=20789"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=20789"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=20789"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}