{"id":187210,"date":"2024-11-11T12:22:19","date_gmt":"2024-11-11T04:22:19","guid":{"rendered":"https:\/\/server.hk\/cnblog\/187210\/"},"modified":"2024-11-11T12:22:20","modified_gmt":"2024-11-11T04:22:20","slug":"%e6%95%b8%e6%93%9a%e5%ba%ab%e8%a6%96%e5%9c%96%e7%9a%84%e7%89%b9%e9%bb%9e%e7%b0%a1%e8%bf%b0-%e6%95%b8%e6%93%9a%e5%ba%ab%e8%a6%96%e5%9c%96%e7%9a%84%e7%89%b9%e9%bb%9e","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/187210\/","title":{"rendered":"\u6578\u64da\u5eab\u8996\u5716\u7684\u7279\u9ede\u7c21\u8ff0 (\u6578\u64da\u5eab\u8996\u5716\u7684\u7279\u9ede)"},"content":{"rendered":"<h1 id=\"%e6%95%b8%e6%93%9a%e5%ba%ab%e8%a6%96%e5%9c%96%e7%9a%84%e7%89%b9%e9%bb%9e%e7%b0%a1%e8%bf%b0-OOkvyfZDnZ\">\u6578\u64da\u5eab\u8996\u5716\u7684\u7279\u9ede\u7c21\u8ff0<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\u4e2d\uff0c\u8996\u5716\uff08View\uff09\u662f\u4e00\u7a2e\u865b\u64ec\u8868\u683c\uff0c\u5b83\u662f\u57fa\u65bc\u4e00\u500b\u6216\u591a\u500b\u8868\u683c\u7684\u67e5\u8a62\u7d50\u679c\u3002\u8996\u5716\u4e0d\u5132\u5b58\u6578\u64da\uff0c\u800c\u662f\u52d5\u614b\u751f\u6210\u6578\u64da\uff0c\u9019\u4f7f\u5f97\u5b83\u5728\u6578\u64da\u5eab\u8a2d\u8a08\u548c\u7ba1\u7406\u4e2d\u5177\u6709\u591a\u7a2e\u7279\u9ede\u548c\u512a\u52e2\u3002\u672c\u6587\u5c07\u7c21\u8981\u4ecb\u7d39\u6578\u64da\u5eab\u8996\u5716\u7684\u4e3b\u8981\u7279\u9ede\u3002<\/p>\n<h2 id=\"1-%e8%99%9b%e6%93%ac%e6%80%a7-OOkvyfZDnZ\">1. \u865b\u64ec\u6027<\/h2>\n<p>\u8996\u5716\u7684\u6700\u986f\u8457\u7279\u9ede\u662f\u5176\u865b\u64ec\u6027\u3002\u8207\u5be6\u969b\u7684\u6578\u64da\u8868\u4e0d\u540c\uff0c\u8996\u5716\u4e0d\u6703\u5728\u6578\u64da\u5eab\u4e2d\u4f54\u7528\u7269\u7406\u7a7a\u9593\u3002\u5b83\u5011\u50c5\u50c5\u662f\u67e5\u8a62\u7684\u7d50\u679c\uff0c\u7576\u7528\u6236\u8a2a\u554f\u8996\u5716\u6642\uff0c\u6578\u64da\u5eab\u7cfb\u7d71\u6703\u5373\u6642\u57f7\u884c\u76f8\u61c9\u7684\u67e5\u8a62\uff0c\u4e26\u8fd4\u56de\u7d50\u679c\u3002\u9019\u7a2e\u7279\u6027\u4f7f\u5f97\u8996\u5716\u5728\u6578\u64da\u5eab\u4e2d\u80fd\u5920\u9748\u6d3b\u5730\u5c55\u793a\u6578\u64da\uff0c\u800c\u4e0d\u9700\u8981\u5be6\u969b\u5b58\u5132\u91cd\u8907\u7684\u6578\u64da\u3002<\/p>\n<h2 id=\"2-%e6%95%b8%e6%93%9a%e5%ae%89%e5%85%a8%e6%80%a7-OOkvyfZDnZ\">2. \u6578\u64da\u5b89\u5168\u6027<\/h2>\n<p>\u8996\u5716\u53ef\u4ee5\u7528\u4f86\u9650\u5236\u7528\u6236\u5c0d\u5e95\u5c64\u6578\u64da\u7684\u8a2a\u554f\u3002\u901a\u904e\u5275\u5efa\u8996\u5716\uff0c\u6578\u64da\u5eab\u7ba1\u7406\u54e1\u53ef\u4ee5\u63a7\u5236\u7528\u6236\u80fd\u5920\u67e5\u770b\u54ea\u4e9b\u6578\u64da\u3002\u4f8b\u5982\uff0c\u82e5\u4e00\u500b\u8868\u683c\u4e2d\u5305\u542b\u654f\u611f\u4fe1\u606f\uff0c\u7ba1\u7406\u54e1\u53ef\u4ee5\u5275\u5efa\u4e00\u500b\u8996\u5716\uff0c\u53ea\u986f\u793a\u975e\u654f\u611f\u7684\u6578\u64da\uff0c\u5f9e\u800c\u63d0\u9ad8\u6578\u64da\u7684\u5b89\u5168\u6027\u3002<\/p>\n<h3 id=\"%e7%a4%ba%e4%be%8b%ef%bc%9a-OOkvyfZDnZ\">\u793a\u4f8b\uff1a<\/h3>\n<pre><code>CREATE VIEW public_data AS\nSELECT name, email FROM users WHERE is_active = 1;<\/code><\/pre>\n<p>\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0c\u8996\u5716 <code>public_data<\/code> \u53ea\u986f\u793a\u6d3b\u8e8d\u7528\u6236\u7684\u59d3\u540d\u548c\u96fb\u5b50\u90f5\u4ef6\u5730\u5740\uff0c\u96b1\u85cf\u4e86\u5176\u4ed6\u654f\u611f\u4fe1\u606f\u3002<\/p>\n<h2 id=\"3-%e6%95%b8%e6%93%9a%e7%b0%a1%e5%8c%96-OOkvyfZDnZ\">3. \u6578\u64da\u7c21\u5316<\/h2>\n<p>\u8996\u5716\u53ef\u4ee5\u7c21\u5316\u8907\u96dc\u7684\u67e5\u8a62\u3002\u7528\u6236\u53ef\u4ee5\u901a\u904e\u8996\u5716\u4f86\u8a2a\u554f\u7d93\u904e\u9810\u5148\u5b9a\u7fa9\u7684\u67e5\u8a62\u7d50\u679c\uff0c\u800c\u4e0d\u9700\u8981\u6bcf\u6b21\u90fd\u7de8\u5beb\u8907\u96dc\u7684 SQL \u8a9e\u53e5\u3002\u9019\u5c0d\u65bc\u4e0d\u719f\u6089 SQL \u7684\u7528\u6236\u4f86\u8aaa\u5c24\u5176\u6709\u7528\uff0c\u56e0\u70ba\u4ed6\u5011\u53ef\u4ee5\u901a\u904e\u7c21\u55ae\u7684\u67e5\u8a62\u4f86\u7372\u53d6\u6240\u9700\u7684\u6578\u64da\u3002<\/p>\n<h3 id=\"%e7%a4%ba%e4%be%8b%ef%bc%9a-OOkvyfZDnZ\">\u793a\u4f8b\uff1a<\/h3>\n<pre><code>SELECT * FROM public_data WHERE email LIKE '%@example.com';<\/code><\/pre>\n<p>\u9019\u6a23\u7684\u67e5\u8a62\u53ef\u4ee5\u76f4\u63a5\u4f7f\u7528\u8996\u5716\uff0c\u800c\u4e0d\u9700\u8981\u91cd\u8907\u7de8\u5beb\u8907\u96dc\u7684 SQL \u8a9e\u53e5\u3002<\/p>\n<h2 id=\"4-%e6%95%b8%e6%93%9a%e6%9b%b4%e6%96%b0%e9%99%90%e5%88%b6-OOkvyfZDnZ\">4. \u6578\u64da\u66f4\u65b0\u9650\u5236<\/h2>\n<p>\u96d6\u7136\u8996\u5716\u53ef\u4ee5\u7528\u65bc\u67e5\u8a62\u6578\u64da\uff0c\u4f46\u4e26\u975e\u6240\u6709\u8996\u5716\u90fd\u652f\u6301\u6578\u64da\u66f4\u65b0\u3002\u67d0\u4e9b\u8996\u5716\u53ef\u80fd\u662f\u53ea\u8b80\u7684\uff0c\u9019\u610f\u5473\u8457\u7528\u6236\u7121\u6cd5\u901a\u904e\u8996\u5716\u4f86\u63d2\u5165\u3001\u66f4\u65b0\u6216\u522a\u9664\u6578\u64da\u3002\u9019\u901a\u5e38\u53d6\u6c7a\u65bc\u8996\u5716\u7684\u5b9a\u7fa9\u548c\u5e95\u5c64\u8868\u7684\u7d50\u69cb\u3002<\/p>\n<h3 id=\"%e7%a4%ba%e4%be%8b%ef%bc%9a-OOkvyfZDnZ\">\u793a\u4f8b\uff1a<\/h3>\n<p>\u5982\u679c\u4e00\u500b\u8996\u5716\u662f\u57fa\u65bc\u591a\u500b\u8868\u7684\u806f\u63a5\uff0c\u5247\u8a72\u8996\u5716\u53ef\u80fd\u7121\u6cd5\u9032\u884c\u66f4\u65b0\u64cd\u4f5c\u3002\u7528\u6236\u9700\u8981\u76f4\u63a5\u8a2a\u554f\u5e95\u5c64\u8868\u4f86\u9032\u884c\u6578\u64da\u4fee\u6539\u3002<\/p>\n<h2 id=\"5-%e6%95%88%e8%83%bd%e8%80%83%e9%87%8f-OOkvyfZDnZ\">5. \u6548\u80fd\u8003\u91cf<\/h2>\n<p>\u8996\u5716\u7684\u4f7f\u7528\u53ef\u80fd\u6703\u5f71\u97ff\u67e5\u8a62\u7684\u6548\u80fd\u3002\u7531\u65bc\u8996\u5716\u662f\u52d5\u614b\u751f\u6210\u7684\uff0c\u8907\u96dc\u7684\u8996\u5716\u53ef\u80fd\u6703\u5c0e\u81f4\u67e5\u8a62\u6027\u80fd\u4e0b\u964d\u3002\u70ba\u4e86\u63d0\u9ad8\u6027\u80fd\uff0c\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\u901a\u5e38\u6703\u4f7f\u7528\u7269\u5316\u8996\u5716\uff08Materialized View\uff09\uff0c\u9019\u662f\u4e00\u7a2e\u5c07\u67e5\u8a62\u7d50\u679c\u5132\u5b58\u70ba\u5be6\u969b\u6578\u64da\u7684\u8996\u5716\uff0c\u5f9e\u800c\u52a0\u5feb\u67e5\u8a62\u901f\u5ea6\u3002<\/p>\n<h3 id=\"%e7%a4%ba%e4%be%8b%ef%bc%9a-OOkvyfZDnZ\">\u793a\u4f8b\uff1a<\/h3>\n<pre><code>CREATE MATERIALIZED VIEW sales_summary AS\nSELECT product_id, SUM(amount) AS total_sales\nFROM sales\nGROUP BY product_id;<\/code><\/pre>\n<p>\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0c\u7269\u5316\u8996\u5716 <code>sales_summary<\/code> \u5132\u5b58\u4e86\u92b7\u552e\u7e3d\u7d50\u7684\u7d50\u679c\uff0c\u5f9e\u800c\u63d0\u9ad8\u4e86\u67e5\u8a62\u6548\u7387\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-OOkvyfZDnZ\">\u7e3d\u7d50<\/h2>\n<p>\u6578\u64da\u5eab\u8996\u5716\u662f\u4e00\u7a2e\u5f37\u5927\u7684\u5de5\u5177\uff0c\u5177\u6709\u865b\u64ec\u6027\u3001\u6578\u64da\u5b89\u5168\u6027\u3001\u6578\u64da\u7c21\u5316\u3001\u66f4\u65b0\u9650\u5236\u548c\u6548\u80fd\u8003\u91cf\u7b49\u7279\u9ede\u3002\u5b83\u5011\u5728\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\u626e\u6f14\u8457\u91cd\u8981\u89d2\u8272\uff0c\u5e6b\u52a9\u7528\u6236\u66f4\u6709\u6548\u5730\u8a2a\u554f\u548c\u7ba1\u7406\u6578\u64da\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u6578\u64da\u8655\u7406\u7684\u4f01\u696d\u4f86\u8aaa\uff0c\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u5eab\u89e3\u6c7a\u65b9\u6848\u81f3\u95dc\u91cd\u8981\u3002\u82e5\u60a8\u5c0d\u65bc <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u6216\u5176\u4ed6 <a href=\"https:\/\/server.hk\">\u4f3a\u670d\u5668<\/a> \u89e3\u6c7a\u65b9\u6848\u611f\u8208\u8da3\uff0c\u6b61\u8fce\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u4ee5\u7372\u53d6\u66f4\u591a\u4fe1\u606f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u7c21\u8ff0\u6578\u64da\u5eab\u8996\u5716\u7684\u7279\u9ede\uff0c\u5305\u62ec\u6578\u64da\u62bd\u8c61\u3001\u7c21\u5316\u67e5\u8a62\u3001\u6578\u64da\u5b89\u5168\u6027\u53ca\u53ef\u91cd\u7528\u6027\uff0c\u63d0\u5347\u6578\u64da\u7ba1\u7406\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-187210","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/187210","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=187210"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/187210\/revisions"}],"predecessor-version":[{"id":187211,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/187210\/revisions\/187211"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=187210"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=187210"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=187210"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}