{"id":60829,"date":"2024-10-13T06:09:17","date_gmt":"2024-10-12T22:09:17","guid":{"rendered":"https:\/\/server.hk\/cnblog\/60829\/"},"modified":"2024-10-13T06:09:17","modified_gmt":"2024-10-12T22:09:17","slug":"db2%e6%95%b8%e6%93%9a%e5%ba%ab%e7%89%a9%e5%8c%96%e8%a6%96%e5%9c%96%e4%b9%8bmqt%e7%89%a9%e5%8c%96%e6%9f%a5%e8%a9%a2%e8%a1%a8%e7%9a%84%e6%ad%a3%e7%a2%ba%e6%87%89%e7%94%a8","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/60829\/","title":{"rendered":"DB2\u6578\u64da\u5eab\u7269\u5316\u8996\u5716\u4e4bMQT\u7269\u5316\u67e5\u8a62\u8868\u7684\u6b63\u78ba\u61c9\u7528"},"content":{"rendered":"<h1 id=\"db2%e6%95%b8%e6%93%9a%e5%ba%ab%e7%89%a9%e5%8c%96%e8%a6%96%e5%9c%96%e4%b9%8bmqt%e7%89%a9%e5%8c%96%e6%9f%a5%e8%a9%a2%e8%a1%a8%e7%9a%84%e6%ad%a3%e7%a2%ba%e6%87%89%e7%94%a8-AKjHqodazM\">DB2\u6578\u64da\u5eab\u7269\u5316\u8996\u5716\u4e4bMQT\u7269\u5316\u67e5\u8a62\u8868\u7684\u6b63\u78ba\u61c9\u7528<\/h1>\n<p>\u5728\u7576\u4eca\u6578\u64da\u9a45\u52d5\u7684\u4e16\u754c\u4e2d\uff0c\u6578\u64da\u5eab\u7684\u6027\u80fd\u548c\u6548\u7387\u81f3\u95dc\u91cd\u8981\u3002IBM\u7684DB2\u6578\u64da\u5eab\u7cfb\u7d71\u63d0\u4f9b\u4e86\u4e00\u7a2e\u5f37\u5927\u7684\u529f\u80fd\uff0c\u5373\u7269\u5316\u67e5\u8a62\u8868\uff08Materialized Query Tables, MQT\uff09\uff0c\u9019\u662f\u4e00\u7a2e\u7279\u6b8a\u7684\u7269\u5316\u8996\u5716\uff0c\u80fd\u5920\u986f\u8457\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u3002\u672c\u6587\u5c07\u63a2\u8a0eMQT\u7684\u6b63\u78ba\u61c9\u7528\u53ca\u5176\u5728DB2\u6578\u64da\u5eab\u4e2d\u7684\u512a\u52e2\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%afmqt%ef%bc%9f-AKjHqodazM\">\u4ec0\u9ebc\u662fMQT\uff1f<\/h2>\n<p>\u7269\u5316\u67e5\u8a62\u8868\uff08MQT\uff09\u662f\u4e00\u7a2e\u5b58\u5132\u67e5\u8a62\u7d50\u679c\u7684\u6578\u64da\u7d50\u69cb\u3002\u8207\u50b3\u7d71\u7684\u8996\u5716\u4e0d\u540c\uff0cMQT\u5c07\u67e5\u8a62\u7d50\u679c\u5be6\u969b\u5b58\u5132\u5728\u6578\u64da\u5eab\u4e2d\uff0c\u9019\u6a23\u5728\u57f7\u884c\u67e5\u8a62\u6642\uff0cDB2\u53ef\u4ee5\u76f4\u63a5\u5f9eMQT\u4e2d\u6aa2\u7d22\u6578\u64da\uff0c\u800c\u7121\u9700\u6bcf\u6b21\u90fd\u91cd\u65b0\u8a08\u7b97\u67e5\u8a62\u3002\u9019\u5c0d\u65bc\u9700\u8981\u983b\u7e41\u8a2a\u554f\u7684\u8907\u96dc\u67e5\u8a62\u7279\u5225\u6709\u7528\u3002<\/p>\n<h2 id=\"mqt%e7%9a%84%e5%84%aa%e5%8b%a2-AKjHqodazM\">MQT\u7684\u512a\u52e2<\/h2>\n<ul>\n<li><strong>\u6027\u80fd\u63d0\u5347\uff1a<\/strong>MQT\u80fd\u5920\u986f\u8457\u6e1b\u5c11\u67e5\u8a62\u7684\u57f7\u884c\u6642\u9593\uff0c\u7279\u5225\u662f\u5728\u8655\u7406\u5927\u91cf\u6578\u64da\u6642\u3002<\/li>\n<li><strong>\u6e1b\u5c11\u8cc7\u6e90\u6d88\u8017\uff1a<\/strong>\u901a\u904e\u6e1b\u5c11\u67e5\u8a62\u7684\u8a08\u7b97\u9700\u6c42\uff0cMQT\u53ef\u4ee5\u964d\u4f4eCPU\u548c\u5167\u5b58\u7684\u4f7f\u7528\u3002<\/li>\n<li><strong>\u7c21\u5316\u67e5\u8a62\uff1a<\/strong>\u4f7f\u7528MQT\u53ef\u4ee5\u7c21\u5316\u8907\u96dc\u67e5\u8a62\u7684\u7d50\u69cb\uff0c\u8b93\u958b\u767c\u8005\u66f4\u5bb9\u6613\u7406\u89e3\u548c\u7dad\u8b77\u3002<\/li>\n<\/ul>\n<h2 id=\"mqt%e7%9a%84%e6%ad%a3%e7%a2%ba%e6%87%89%e7%94%a8-AKjHqodazM\">MQT\u7684\u6b63\u78ba\u61c9\u7528<\/h2>\n<p>\u5728DB2\u4e2d\u6b63\u78ba\u61c9\u7528MQT\u9700\u8981\u8003\u616e\u4ee5\u4e0b\u5e7e\u500b\u65b9\u9762\uff1a<\/p>\n<h3 id=\"1-%e9%81%b8%e6%93%87%e5%90%88%e9%81%a9%e7%9a%84%e6%9f%a5%e8%a9%a2-AKjHqodazM\">1. \u9078\u64c7\u5408\u9069\u7684\u67e5\u8a62<\/h3>\n<p>\u4e26\u975e\u6240\u6709\u67e5\u8a62\u90fd\u9069\u5408\u8f49\u63db\u70baMQT\u3002\u901a\u5e38\uff0c\u9069\u5408\u7684\u67e5\u8a62\u61c9\u8a72\u662f\uff1a<\/p>\n<ul>\n<li>\u7d93\u5e38\u88ab\u57f7\u884c\u7684\u67e5\u8a62\u3002<\/li>\n<li>\u8a08\u7b97\u91cf\u5927\u4e14\u7d50\u679c\u76f8\u5c0d\u7a69\u5b9a\u7684\u67e5\u8a62\u3002<\/li>\n<li>\u6d89\u53ca\u591a\u500b\u8868\u7684\u806f\u63a5\u67e5\u8a62\u3002<\/li>\n<\/ul>\n<h3 id=\"2-%e5%ae%9a%e7%be%a9mqt-AKjHqodazM\">2. \u5b9a\u7fa9MQT<\/h3>\n<p>\u5728DB2\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0bSQL\u8a9e\u53e5\u4f86\u5275\u5efaMQT\uff1a<\/p>\n<pre><code>CREATE TABLE my_mqt AS (\n    SELECT column1, column2, SUM(column3) AS total\n    FROM my_table\n    GROUP BY column1, column2\n) DATA INITIALLY DEFERRED REFRESH IMMEDIATE;<\/code><\/pre>\n<p>\u9019\u6bb5\u4ee3\u78bc\u5275\u5efa\u4e86\u4e00\u500b\u540d\u70bamy_mqt\u7684MQT\uff0c\u4e26\u5c07my_table\u4e2d\u7684\u6578\u64da\u9032\u884c\u805a\u5408\u8a08\u7b97\u3002<\/p>\n<h3 id=\"3-%e5%88%b7%e6%96%b0%e7%ad%96%e7%95%a5-AKjHqodazM\">3. \u5237\u65b0\u7b56\u7565<\/h3>\n<p>MQT\u7684\u6578\u64da\u9700\u8981\u5b9a\u671f\u5237\u65b0\uff0c\u4ee5\u78ba\u4fdd\u5176\u6e96\u78ba\u6027\u3002DB2\u63d0\u4f9b\u4e86\u591a\u7a2e\u5237\u65b0\u7b56\u7565\uff0c\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><strong>\u5373\u6642\u5237\u65b0\uff1a<\/strong>\u6bcf\u6b21\u57fa\u790e\u8868\u6578\u64da\u8b8a\u66f4\u6642\u7acb\u5373\u66f4\u65b0MQT\u3002<\/li>\n<li><strong>\u5ef6\u9072\u5237\u65b0\uff1a<\/strong>\u5728\u7279\u5b9a\u6642\u9593\u9593\u9694\u5167\u66f4\u65b0MQT\u3002<\/li>\n<li><strong>\u624b\u52d5\u5237\u65b0\uff1a<\/strong>\u6839\u64da\u9700\u8981\u624b\u52d5\u89f8\u767cMQT\u7684\u66f4\u65b0\u3002<\/li>\n<\/ul>\n<h3 id=\"4-%e6%80%a7%e8%83%bd%e7%9b%a3%e6%8e%a7-AKjHqodazM\">4. \u6027\u80fd\u76e3\u63a7<\/h3>\n<p>\u5728\u4f7f\u7528MQT\u5f8c\uff0c\u61c9\u5b9a\u671f\u76e3\u63a7\u5176\u6027\u80fd\u3002\u53ef\u4ee5\u4f7f\u7528DB2\u7684\u6027\u80fd\u76e3\u63a7\u5de5\u5177\u4f86\u5206\u6790MQT\u7684\u67e5\u8a62\u6027\u80fd\uff0c\u4e26\u6839\u64da\u9700\u8981\u9032\u884c\u8abf\u6574\u3002<\/p>\n<h2 id=\"%e7%b5%90%e8%ab%96-AKjHqodazM\">\u7d50\u8ad6<\/h2>\n<p>MQT\u4f5c\u70baDB2\u6578\u64da\u5eab\u4e2d\u7684\u4e00\u9805\u91cd\u8981\u529f\u80fd\uff0c\u80fd\u5920\u986f\u8457\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u548c\u8cc7\u6e90\u5229\u7528\u7387\u3002\u901a\u904e\u6b63\u78ba\u9078\u64c7\u67e5\u8a62\u3001\u5b9a\u7fa9MQT\u3001\u8a2d\u7f6e\u5408\u9069\u7684\u5237\u65b0\u7b56\u7565\u4ee5\u53ca\u9032\u884c\u6027\u80fd\u76e3\u63a7\uff0c\u4f01\u696d\u53ef\u4ee5\u5145\u5206\u767c\u63eeMQT\u7684\u6f5b\u529b\uff0c\u63d0\u5347\u6578\u64da\u8655\u7406\u6548\u7387\u3002<\/p>\n<p>\u5982\u9700\u4e86\u89e3\u66f4\u591a\u95dc\u65bc\u6578\u64da\u5eab\u548c\u4f3a\u670d\u5668\u7684\u8cc7\u8a0a\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9 <a href=\"https:\/\/server.hk\">Server.HK<\/a>\uff0c\u63a2\u7d22\u6211\u5011\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u53ca\u5176\u4ed6\u670d\u52d9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22DB2\u6578\u64da\u5eab\u4e2dMQT\u7269\u5316\u67e5\u8a62\u8868\u7684\u6b63\u78ba\u61c9\u7528\uff0c\u63d0\u5347\u67e5\u8a62\u6027\u80fd\u8207\u6578\u64da\u7ba1\u7406\u6548\u7387\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-60829","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/60829","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=60829"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/60829\/revisions"}],"predecessor-version":[{"id":60830,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/60829\/revisions\/60830"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=60829"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=60829"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=60829"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}