{"id":20788,"date":"2024-01-02T05:57:26","date_gmt":"2024-01-02T05:57:26","guid":{"rendered":"https:\/\/server.hk\/blog\/20788\/"},"modified":"2024-11-14T10:38:40","modified_gmt":"2024-11-14T02:38:40","slug":"postgresql-command-create-materialized-view","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/20788\/","title":{"rendered":"PostgreSQL \u547d\u4ee4\uff1aCREATE MATERIALIZED VIEW"},"content":{"rendered":"<h1 id=\"postgresql-command-create-materialized-view-iGnfYiUjup\">PostgreSQL \u547d\u4ee4\uff1aCREATE MATERIALIZED VIEW<\/h1>\n<p>PostgreSQL \u662f\u4e00\u500b\u529f\u80fd\u5f37\u5927\u7684\u958b\u6e90\u95dc\u806f\u5f0f\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff0c\u63d0\u4f9b\u4e86\u8c50\u5bcc\u7684\u529f\u80fd\u548c\u7279\u6027\u3002\u5176\u4e2d\u4e00\u9805\u95dc\u9375\u7279\u6027\u662f\u80fd\u5920\u5275\u5efa\u7269\u5316\u8996\u5716\uff0c\u9019\u70ba\u7269\u7406\u5b58\u5132\u67e5\u8a62\u7d50\u679c\u63d0\u4f9b\u4e86\u4e00\u7a2e\u65b9\u5f0f\u3002\u672c\u6587\u5c07\u63a2\u7d22 PostgreSQL \u547d\u4ee4 <code>CREATE MATERIALIZED VIEW<\/code>\uff0c\u4e26\u4e86\u89e3\u5176\u5982\u4f55\u7528\u65bc\u63d0\u9ad8\u6027\u80fd\u548c\u7c21\u5316\u8907\u96dc\u67e5\u8a62\u3002<\/p>\n<h2 id=\"what-is-a-materialized-view-iGnfYiUjup\">\u4ec0\u9ebc\u662f\u7269\u5316\u8996\u5716\uff1f<\/h2>\n<p>\u7269\u5316\u8996\u5716\u662f\u4e00\u500b\u6578\u64da\u5eab\u5c0d\u8c61\uff0c\u5305\u542b\u67e5\u8a62\u7684\u7d50\u679c\u3002\u8207\u4e0d\u5b58\u5132\u6578\u64da\u7684\u666e\u901a\u8996\u5716\u76f8\u6bd4\uff0c\u7269\u5316\u8996\u5716\u5247\u6703\u5be6\u969b\u5b58\u5132\u6578\u64da\u3002\u9019\u610f\u5473\u8457\u67e5\u8a62\u7684\u7d50\u679c\u6703\u8a08\u7b97\u4e26\u5b58\u5132\u5728\u7269\u5316\u8996\u5716\u4e2d\uff0c\u5f9e\u800c\u5be6\u73fe\u66f4\u5feb\u901f\u7684\u8a2a\u554f\u548c\u63d0\u9ad8\u6027\u80fd\u3002<\/p>\n<p>\u7269\u5316\u8996\u5716\u5728\u8655\u7406\u6d89\u53ca\u805a\u5408\u3001\u806f\u63a5\u6216\u8cbb\u6642\u8a08\u7b97\u7684\u8907\u96dc\u67e5\u8a62\u6642\u7279\u5225\u6709\u7528\u3002\u901a\u904e\u9810\u8a08\u7b97\u548c\u5b58\u5132\u9019\u4e9b\u67e5\u8a62\u7684\u7d50\u679c\uff0c\u7269\u5316\u8996\u5716\u6d88\u9664\u4e86\u6bcf\u6b21\u57f7\u884c\u67e5\u8a62\u6642\u91cd\u65b0\u8a08\u7b97\u7d50\u679c\u7684\u5fc5\u8981\uff0c\u5f9e\u800c\u986f\u8457\u63d0\u9ad8\u6027\u80fd\u3002<\/p>\n<h2 id=\"creating-a-materialized-view-iGnfYiUjup\">\u5275\u5efa\u7269\u5316\u8996\u5716<\/h2>\n<p>\u5728 PostgreSQL \u4e2d\u5275\u5efa\u7269\u5316\u8996\u5716\u7684\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code>CREATE MATERIALIZED VIEW view_name\r\nAS\r\nSELECT column1, column2, ...\r\nFROM table_name\r\nWHERE condition\r\nGROUP BY column1, column2, ...\r\nORDER BY column1, column2, ...;<\/code><\/pre>\n<p>\u8b93\u6211\u5011\u4f86\u5206\u6790\u9019\u500b\u8a9e\u6cd5\uff1a<\/p>\n<ul>\n<li><code>CREATE MATERIALIZED VIEW<\/code>\uff1a\u9019\u662f\u7528\u65bc\u5275\u5efa\u7269\u5316\u8996\u5716\u7684\u547d\u4ee4\u3002<\/li>\n<li><code>view_name<\/code>\uff1a\u9019\u662f\u7269\u5316\u8996\u5716\u7684\u540d\u7a31\u3002<\/li>\n<li><code>AS<\/code>\uff1a\u9019\u500b\u95dc\u9375\u5b57\u7528\u65bc\u6307\u5b9a\u7269\u5316\u8996\u5716\u662f\u4f5c\u70ba\u4ee5\u4e0b\u67e5\u8a62\u7684\u7d50\u679c\u5275\u5efa\u7684\u3002<\/li>\n<li><code>SELECT column1, column2, ...<\/code>\uff1a\u9019\u662f\u5b9a\u7fa9\u7269\u5316\u8996\u5716\u7d50\u679c\u96c6\u7684\u67e5\u8a62\u3002<\/li>\n<li><code>FROM table_name<\/code>\uff1a\u9019\u6307\u5b9a\u4e86\u5f9e\u4e2d\u63d0\u53d6\u6578\u64da\u7684\u8868\u3002<\/li>\n<li><code>WHERE condition<\/code>\uff1a\u9019\u662f\u4e00\u500b\u53ef\u9078\u5b50\u53e5\uff0c\u5141\u8a31\u60a8\u6839\u64da\u67d0\u4e9b\u689d\u4ef6\u904e\u6ffe\u6578\u64da\u3002<\/li>\n<li><code>GROUP BY column1, column2, ...<\/code>\uff1a\u9019\u662f\u4e00\u500b\u53ef\u9078\u5b50\u53e5\uff0c\u5141\u8a31\u60a8\u6839\u64da\u67d0\u4e9b\u5217\u5c0d\u6578\u64da\u9032\u884c\u5206\u7d44\u3002<\/li>\n<li><code>ORDER BY column1, column2, ...<\/code>\uff1a\u9019\u662f\u4e00\u500b\u53ef\u9078\u5b50\u53e5\uff0c\u5141\u8a31\u60a8\u6839\u64da\u67d0\u4e9b\u5217\u5c0d\u6578\u64da\u9032\u884c\u6392\u5e8f\u3002<\/li>\n<\/ul>\n<h2 id=\"refreshing-a-materialized-view-iGnfYiUjup\">\u5237\u65b0\u7269\u5316\u8996\u5716<\/h2>\n<p>\u4e00\u65e6\u5275\u5efa\u4e86\u7269\u5316\u8996\u5716\uff0c\u60a8\u9700\u8981\u5b9a\u671f\u5237\u65b0\u5b83\u4ee5\u78ba\u4fdd\u6578\u64da\u7684\u6700\u65b0\u6027\u3002PostgreSQL \u63d0\u4f9b\u4e86 <code>REFRESH MATERIALIZED VIEW<\/code> \u547d\u4ee4\u4f86\u5237\u65b0\u7269\u5316\u8996\u5716\u3002\u5237\u65b0\u7269\u5316\u8996\u5716\u7684\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code>REFRESH MATERIALIZED VIEW view_name;<\/code><\/pre>\n<p>\u9ed8\u8a8d\u60c5\u6cc1\u4e0b\uff0c<code>REFRESH MATERIALIZED VIEW<\/code> \u547d\u4ee4\u57f7\u884c\u5168\u9762\u5237\u65b0\uff0c\u9019\u5c07\u91cd\u65b0\u8a08\u7b97\u6574\u500b\u7269\u5316\u8996\u5716\u7684\u7d50\u679c\u96c6\u3002\u7136\u800c\uff0cPostgreSQL \u4e5f\u63d0\u4f9b\u4e86\u57f7\u884c\u589e\u91cf\u5237\u65b0\u7684\u9078\u9805\uff0c\u6b64\u6642\u50c5\u66f4\u65b0\u4fee\u6539\u904e\u7684\u6578\u64da\u3002<\/p>\n<h2 id=\"conclusion-iGnfYiUjup\">\u7e3d\u7d50<\/h2>\n<p>PostgreSQL \u7684 <code>CREATE MATERIALIZED VIEW<\/code> \u547d\u4ee4\u662f\u4e00\u500b\u5f37\u5927\u7684\u5de5\u5177\uff0c\u5b83\u5141\u8a31\u60a8\u63d0\u9ad8\u6027\u80fd\u4e26\u7c21\u5316\u8907\u96dc\u67e5\u8a62\u3002\u901a\u904e\u9810\u8a08\u7b97\u4e26\u5b58\u5132\u67e5\u8a62\u7684\u7d50\u679c\uff0c\u7269\u5316\u8996\u5716\u6d88\u9664\u4e86\u9032\u884c\u7e41\u91cd\u8a08\u7b97\u7684\u9700\u8981\uff0c\u4e26\u63d0\u4f9b\u4e86\u66f4\u5feb\u901f\u7684\u6578\u64da\u8a2a\u554f\u3002\u6191\u85c9\u5b9a\u671f\u5237\u65b0\u7269\u5316\u8996\u5716\u7684\u80fd\u529b\uff0c\u60a8\u53ef\u4ee5\u78ba\u4fdd\u6578\u64da\u59cb\u7d42\u4fdd\u6301\u6700\u65b0\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u652f\u6301 PostgreSQL \u548c\u5176\u4ed6\u5f37\u5927\u529f\u80fd\u7684\u53ef\u9760 VPS \u8a17\u7ba1\u89e3\u6c7a\u65b9\u6848\uff0c\u8acb\u8003\u616e <a href=\"https:\/\/server.hk\">Server.HK<\/a>\u3002\u501f\u52a9\u4ed6\u5011\u7684\u9802\u7d1a VPS \u89e3\u6c7a\u65b9\u6848\uff0c\u60a8\u53ef\u4ee5\u9ad4\u9a57\u9ad8\u6027\u80fd\u7684\u8a17\u7ba1\u670d\u52d9\uff0c\u5145\u5206\u767c\u63ee PostgreSQL \u7684\u5f37\u5927\u529f\u80fd\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>PostgreSQL \u547d\u4ee4\uff1aCR&#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-20788","post","type-post","status-publish","format-standard","hentry","category-setup-tutorials"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/20788","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=20788"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/20788\/revisions"}],"predecessor-version":[{"id":24309,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/20788\/revisions\/24309"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=20788"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=20788"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=20788"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}