{"id":153719,"date":"2024-11-02T09:47:18","date_gmt":"2024-11-02T01:47:18","guid":{"rendered":"https:\/\/server.hk\/cnblog\/153719\/"},"modified":"2024-11-02T09:47:20","modified_gmt":"2024-11-02T01:47:20","slug":"%e5%b8%b6%e6%82%a8%e4%ba%86%e8%a7%a3db2%e7%89%a9%e5%8c%96%e8%a6%96%e5%9c%96","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/153719\/","title":{"rendered":"\u5e36\u60a8\u4e86\u89e3DB2\u7269\u5316\u8996\u5716"},"content":{"rendered":"<h1 id=\"%e5%b8%b6%e6%82%a8%e4%ba%86%e8%a7%a3db2%e7%89%a9%e5%8c%96%e8%a6%96%e5%9c%96-PnaabfUILg\">\u5e36\u60a8\u4e86\u89e3DB2\u7269\u5316\u8996\u5716<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\u4e2d\uff0c\u7269\u5316\u8996\u5716\uff08Materialized View\uff09\u662f\u4e00\u7a2e\u91cd\u8981\u7684\u6578\u64da\u7d50\u69cb\uff0c\u7279\u5225\u662f\u5728IBM\u7684DB2\u6578\u64da\u5eab\u4e2d\u3002\u7269\u5316\u8996\u5716\u7684\u4e3b\u8981\u529f\u80fd\u662f\u5c07\u67e5\u8a62\u7d50\u679c\u5b58\u5132\u5728\u78c1\u789f\u4e0a\uff0c\u9019\u6a23\u53ef\u4ee5\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\uff0c\u7279\u5225\u662f\u5728\u8655\u7406\u5927\u91cf\u6578\u64da\u6642\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0eDB2\u7269\u5316\u8996\u5716\u7684\u6982\u5ff5\u3001\u512a\u52e2\u3001\u4f7f\u7528\u60c5\u5883\u4ee5\u53ca\u5982\u4f55\u5275\u5efa\u548c\u7ba1\u7406\u7269\u5316\u8996\u5716\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e7%89%a9%e5%8c%96%e8%a6%96%e5%9c%96%ef%bc%9f-PnaabfUILg\">\u4ec0\u9ebc\u662f\u7269\u5316\u8996\u5716\uff1f<\/h2>\n<p>\u7269\u5316\u8996\u5716\u662f\u4e00\u7a2e\u7279\u6b8a\u7684\u8996\u5716\uff0c\u5b83\u7684\u6578\u64da\u662f\u5be6\u969b\u5b58\u5132\u5728\u6578\u64da\u5eab\u4e2d\u7684\uff0c\u800c\u4e0d\u662f\u6bcf\u6b21\u67e5\u8a62\u6642\u90fd\u52d5\u614b\u751f\u6210\u3002\u9019\u610f\u5473\u8457\u7269\u5316\u8996\u5716\u53ef\u4ee5\u5728\u67e5\u8a62\u6642\u63d0\u4f9b\u66f4\u5feb\u7684\u97ff\u61c9\u6642\u9593\uff0c\u56e0\u70ba\u5b83\u5011\u4e0d\u9700\u8981\u91cd\u65b0\u8a08\u7b97\u67e5\u8a62\u7d50\u679c\u3002DB2\u4e2d\u7684\u7269\u5316\u8996\u5716\u53ef\u4ee5\u7528\u65bc\u7c21\u5316\u8907\u96dc\u67e5\u8a62\u3001\u63d0\u9ad8\u6027\u80fd\u4ee5\u53ca\u6e1b\u5c11\u7cfb\u7d71\u8ca0\u64d4\u3002<\/p>\n<h2 id=\"%e7%89%a9%e5%8c%96%e8%a6%96%e5%9c%96%e7%9a%84%e5%84%aa%e5%8b%a2-PnaabfUILg\">\u7269\u5316\u8996\u5716\u7684\u512a\u52e2<\/h2>\n<ul>\n<li><strong>\u6027\u80fd\u63d0\u5347\uff1a<\/strong>\u7269\u5316\u8996\u5716\u53ef\u4ee5\u986f\u8457\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\uff0c\u7279\u5225\u662f\u5728\u9700\u8981\u983b\u7e41\u8a2a\u554f\u76f8\u540c\u6578\u64da\u7684\u60c5\u6cc1\u4e0b\u3002<\/li>\n<li><strong>\u6e1b\u5c11\u8a08\u7b97\u8ca0\u64d4\uff1a<\/strong>\u7531\u65bc\u7269\u5316\u8996\u5716\u5b58\u5132\u4e86\u67e5\u8a62\u7d50\u679c\uff0c\u9019\u6a23\u53ef\u4ee5\u6e1b\u5c11\u5c0d\u57fa\u790e\u8868\u7684\u8a08\u7b97\u9700\u6c42\u3002<\/li>\n<li><strong>\u7c21\u5316\u67e5\u8a62\uff1a<\/strong>\u4f7f\u7528\u7269\u5316\u8996\u5716\u53ef\u4ee5\u7c21\u5316\u8907\u96dc\u67e5\u8a62\u7684\u7d50\u69cb\uff0c\u8b93\u958b\u767c\u8005\u66f4\u5bb9\u6613\u7de8\u5beb\u548c\u7dad\u8b77\u67e5\u8a62\u3002<\/li>\n<li><strong>\u652f\u6301\u589e\u91cf\u66f4\u65b0\uff1a<\/strong>DB2\u652f\u6301\u7269\u5316\u8996\u5716\u7684\u589e\u91cf\u66f4\u65b0\uff0c\u9019\u610f\u5473\u8457\u53ea\u6709\u8b8a\u66f4\u7684\u6578\u64da\u6703\u88ab\u66f4\u65b0\uff0c\u5f9e\u800c\u63d0\u9ad8\u6548\u7387\u3002<\/li>\n<\/ul>\n<h2 id=\"%e4%bd%bf%e7%94%a8%e6%83%85%e5%a2%83-PnaabfUILg\">\u4f7f\u7528\u60c5\u5883<\/h2>\n<p>\u7269\u5316\u8996\u5716\u7279\u5225\u9069\u5408\u65bc\u4ee5\u4e0b\u60c5\u5883\uff1a<\/p>\n<ul>\n<li>\u9700\u8981\u983b\u7e41\u67e5\u8a62\u7684\u5831\u544a\u548c\u5206\u6790\u3002<\/li>\n<li>\u6578\u64da\u91cf\u9f90\u5927\u4e14\u67e5\u8a62\u8907\u96dc\u7684\u61c9\u7528\u3002<\/li>\n<li>\u9700\u8981\u5be6\u6642\u6216\u63a5\u8fd1\u5be6\u6642\u7684\u6578\u64da\u8a2a\u554f\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%a6%82%e4%bd%95%e5%89%b5%e5%bb%ba%e7%89%a9%e5%8c%96%e8%a6%96%e5%9c%96-PnaabfUILg\">\u5982\u4f55\u5275\u5efa\u7269\u5316\u8996\u5716<\/h2>\n<p>\u5728DB2\u4e2d\uff0c\u5275\u5efa\u7269\u5316\u8996\u5716\u7684\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code>CREATE MATERIALIZED VIEW view_name AS\nSELECT column1, column2, ...\nFROM table_name\nWHERE condition;<\/code><\/pre>\n<p>\u4f8b\u5982\uff0c\u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u540d\u70ba\u201csales\u201d\u7684\u8868\uff0c\u6211\u5011\u5e0c\u671b\u5275\u5efa\u4e00\u500b\u7269\u5316\u8996\u5716\u4f86\u986f\u793a\u6bcf\u500b\u7522\u54c1\u7684\u7e3d\u92b7\u552e\u984d\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0bSQL\u8a9e\u53e5\uff1a<\/p>\n<pre><code>CREATE MATERIALIZED VIEW product_sales AS\nSELECT product_id, SUM(sales_amount) AS total_sales\nFROM sales\nGROUP BY product_id;<\/code><\/pre>\n<h2 id=\"%e7%ae%a1%e7%90%86%e7%89%a9%e5%8c%96%e8%a6%96%e5%9c%96-PnaabfUILg\">\u7ba1\u7406\u7269\u5316\u8996\u5716<\/h2>\n<p>DB2\u63d0\u4f9b\u4e86\u591a\u7a2e\u65b9\u6cd5\u4f86\u7ba1\u7406\u7269\u5316\u8996\u5716\uff0c\u5305\u62ec\u66f4\u65b0\u3001\u522a\u9664\u548c\u67e5\u8a62\u7269\u5316\u8996\u5716\u3002\u8981\u66f4\u65b0\u7269\u5316\u8996\u5716\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8a9e\u6cd5\uff1a<\/p>\n<pre><code>REFRESH MATERIALIZED VIEW view_name;<\/code><\/pre>\n<p>\u9019\u5c07\u6839\u64da\u57fa\u790e\u8868\u7684\u6700\u65b0\u6578\u64da\u66f4\u65b0\u7269\u5316\u8996\u5716\u3002\u8981\u522a\u9664\u7269\u5316\u8996\u5716\uff0c\u53ef\u4ee5\u4f7f\u7528\uff1a<\/p>\n<pre><code>DROP MATERIALIZED VIEW view_name;<\/code><\/pre>\n<h2 id=\"%e7%b5%90%e8%ab%96-PnaabfUILg\">\u7d50\u8ad6<\/h2>\n<p>DB2\u7684\u7269\u5316\u8996\u5716\u662f\u4e00\u500b\u5f37\u5927\u7684\u5de5\u5177\uff0c\u53ef\u4ee5\u986f\u8457\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u548c\u7cfb\u7d71\u6548\u7387\u3002\u901a\u904e\u5408\u7406\u4f7f\u7528\u7269\u5316\u8996\u5716\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u7c21\u5316\u6578\u64da\u67e5\u8a62\u904e\u7a0b\uff0c\u4e26\u5728\u8655\u7406\u5927\u91cf\u6578\u64da\u6642\u7372\u5f97\u66f4\u597d\u7684\u6027\u80fd\u3002\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684\u6578\u64da\u5eab\u89e3\u6c7a\u65b9\u6848\uff0c\u8003\u616e\u4f7f\u7528DB2\u7684\u7269\u5316\u8996\u5716\u4f86\u512a\u5316\u60a8\u7684\u6578\u64da\u8655\u7406\u6d41\u7a0b\u3002<\/p>\n<p>\u5982\u9700\u4e86\u89e3\u66f4\u591a\u6709\u95dc<code><a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a><\/code>\u548c<code><a href=\"https:\/\/server.hk\">\u4f3a\u670d\u5668<\/a><\/code>\u7684\u8cc7\u8a0a\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6df1\u5165\u4e86\u89e3DB2\u7269\u5316\u8996\u5716\u7684\u6982\u5ff5\u3001\u512a\u52e2\u53ca\u5176\u5728\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\u7684\u61c9\u7528\uff0c\u63d0\u5347\u67e5\u8a62\u6027\u80fd\u8207\u6548\u7387\u3002<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-153719","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/153719","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"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=153719"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/153719\/revisions"}],"predecessor-version":[{"id":153720,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/153719\/revisions\/153720"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=153719"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=153719"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=153719"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}