{"id":168169,"date":"2024-11-06T10:05:22","date_gmt":"2024-11-06T02:05:22","guid":{"rendered":"https:\/\/server.hk\/cnblog\/168169\/"},"modified":"2024-11-06T10:05:23","modified_gmt":"2024-11-06T02:05:23","slug":"%e5%85%ad%e9%90%b5%e5%be%8b%e6%b1%ba%e5%ae%9asql%e7%b4%a2%e5%bc%95%e7%ae%a1%e7%90%86%e6%96%b9%e5%90%91","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/168169\/","title":{"rendered":"\u516d\u9435\u5f8b\u6c7a\u5b9aSQL\u7d22\u5f15\u7ba1\u7406\u65b9\u5411"},"content":{"rendered":"<h1 id=\"%e5%85%ad%e9%90%b5%e5%be%8b%e6%b1%ba%e5%ae%9asql%e7%b4%a2%e5%bc%95%e7%ae%a1%e7%90%86%e6%96%b9%e5%90%91-GzcWrdEodJ\">\u516d\u9435\u5f8b\u6c7a\u5b9aSQL\u7d22\u5f15\u7ba1\u7406\u65b9\u5411<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\uff0c\u7d22\u5f15\u662f\u4e00\u500b\u81f3\u95dc\u91cd\u8981\u7684\u6982\u5ff5\u3002\u5b83\u80fd\u5920\u986f\u8457\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\uff0c\u6e1b\u5c11\u6578\u64da\u6aa2\u7d22\u7684\u6642\u9593\u3002\u7136\u800c\uff0c\u7d22\u5f15\u7684\u7ba1\u7406\u4e26\u975e\u6613\u4e8b\uff0c\u5c24\u5176\u662f\u5728\u9762\u5c0d\u5927\u91cf\u6578\u64da\u548c\u8907\u96dc\u67e5\u8a62\u6642\u3002\u70ba\u4e86\u6709\u6548\u5730\u7ba1\u7406SQL\u7d22\u5f15\uff0c\u516d\u9435\u5f8b\uff08Six Iron Laws\uff09\u63d0\u4f9b\u4e86\u4e00\u500b\u6709\u7528\u7684\u6846\u67b6\uff0c\u5e6b\u52a9\u6578\u64da\u5eab\u7ba1\u7406\u54e1\uff08DBA\uff09\u505a\u51fa\u660e\u667a\u7684\u6c7a\u7b56\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e5%85%ad%e9%90%b5%e5%be%8b%ef%bc%9f-GzcWrdEodJ\">\u4ec0\u9ebc\u662f\u516d\u9435\u5f8b\uff1f<\/h2>\n<p>\u516d\u9435\u5f8b\u662f\u7531\u6578\u64da\u5eab\u5c08\u5bb6\u63d0\u51fa\u7684\u4e00\u7d44\u539f\u5247\uff0c\u65e8\u5728\u6307\u5c0e\u7d22\u5f15\u7684\u8a2d\u8a08\u548c\u7ba1\u7406\u3002\u9019\u4e9b\u539f\u5247\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><strong>\u7b2c\u4e00\u9435\u5f8b\uff1a\u7d22\u5f15\u61c9\u8a72\u662f\u5fc5\u8981\u7684<\/strong> &#8211; \u5728\u5275\u5efa\u7d22\u5f15\u4e4b\u524d\uff0c\u5fc5\u9808\u78ba\u5b9a\u5176\u5c0d\u67e5\u8a62\u6027\u80fd\u7684\u5be6\u969b\u5f71\u97ff\u3002<\/li>\n<li><strong>\u7b2c\u4e8c\u9435\u5f8b\uff1a\u7d22\u5f15\u7684\u6578\u91cf\u61c9\u8a72\u662f\u6709\u9650\u7684<\/strong> &#8211; \u904e\u591a\u7684\u7d22\u5f15\u6703\u5c0e\u81f4\u5beb\u5165\u6027\u80fd\u4e0b\u964d\uff0c\u56e0\u6b64\u61c9\u8a72\u8b39\u614e\u9078\u64c7\u3002<\/li>\n<li><strong>\u7b2c\u4e09\u9435\u5f8b\uff1a\u7d22\u5f15\u7684\u985e\u578b\u61c9\u8a72\u662f\u5408\u9069\u7684<\/strong> &#8211; \u6839\u64da\u67e5\u8a62\u7684\u7279\u6027\u9078\u64c7\u5408\u9069\u7684\u7d22\u5f15\u985e\u578b\uff0c\u5982B\u6a39\u7d22\u5f15\u3001\u54c8\u5e0c\u7d22\u5f15\u7b49\u3002<\/li>\n<li><strong>\u7b2c\u56db\u9435\u5f8b\uff1a\u7d22\u5f15\u7684\u7dad\u8b77\u61c9\u8a72\u662f\u5b9a\u671f\u7684<\/strong> &#8211; \u96a8\u8457\u6578\u64da\u7684\u8b8a\u5316\uff0c\u7d22\u5f15\u4e5f\u9700\u8981\u9032\u884c\u91cd\u5efa\u548c\u66f4\u65b0\u3002<\/li>\n<li><strong>\u7b2c\u4e94\u9435\u5f8b\uff1a\u7d22\u5f15\u7684\u4f7f\u7528\u61c9\u8a72\u662f\u76e3\u63a7\u7684<\/strong> &#8211; \u900f\u904e\u76e3\u63a7\u5de5\u5177\u4f86\u8a55\u4f30\u7d22\u5f15\u7684\u4f7f\u7528\u60c5\u6cc1\uff0c\u78ba\u4fdd\u5176\u6709\u6548\u6027\u3002<\/li>\n<li><strong>\u7b2c\u516d\u9435\u5f8b\uff1a\u7d22\u5f15\u7684\u8a2d\u8a08\u61c9\u8a72\u662f\u9748\u6d3b\u7684<\/strong> &#8211; \u96a8\u8457\u696d\u52d9\u9700\u6c42\u7684\u8b8a\u5316\uff0c\u7d22\u5f15\u8a2d\u8a08\u4e5f\u61c9\u8a72\u96a8\u4e4b\u8abf\u6574\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b4%a2%e5%bc%95%e7%9a%84%e5%bf%85%e8%a6%81%e6%80%a7-GzcWrdEodJ\">\u7d22\u5f15\u7684\u5fc5\u8981\u6027<\/h2>\n<p>\u5728\u6578\u64da\u5eab\u4e2d\uff0c\u7d22\u5f15\u7684\u4e3b\u8981\u76ee\u7684\u662f\u52a0\u901f\u67e5\u8a62\u3002\u8209\u4f8b\u4f86\u8aaa\uff0c\u5047\u8a2d\u6709\u4e00\u500b\u5305\u542b\u6578\u767e\u842c\u689d\u8a18\u9304\u7684\u7528\u6236\u8868\uff0c\u82e5\u6c92\u6709\u7d22\u5f15\uff0c\u67e5\u8a62\u7279\u5b9a\u7528\u6236\u7684\u64cd\u4f5c\u53ef\u80fd\u9700\u8981\u6383\u63cf\u6574\u500b\u8868\uff0c\u9019\u6a23\u6703\u5c0e\u81f4\u6027\u80fd\u74f6\u9838\u3002\u901a\u904e\u5728\u7528\u6236ID\u4e0a\u5275\u5efa\u7d22\u5f15\uff0c\u6578\u64da\u5eab\u53ef\u4ee5\u5feb\u901f\u5b9a\u4f4d\u5230\u6240\u9700\u7684\u8a18\u9304\uff0c\u986f\u8457\u63d0\u9ad8\u67e5\u8a62\u901f\u5ea6\u3002<\/p>\n<pre><code>CREATE INDEX idx_user_id ON users(user_id);<\/code><\/pre>\n<h2 id=\"%e7%b4%a2%e5%bc%95%e7%9a%84%e6%95%b8%e9%87%8f%e8%88%87%e6%80%a7%e8%83%bd-GzcWrdEodJ\">\u7d22\u5f15\u7684\u6578\u91cf\u8207\u6027\u80fd<\/h2>\n<p>\u96d6\u7136\u7d22\u5f15\u80fd\u5920\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\uff0c\u4f46\u904e\u591a\u7684\u7d22\u5f15\u6703\u5f71\u97ff\u5beb\u5165\u6027\u80fd\u3002\u6bcf\u7576\u9032\u884c\u63d2\u5165\u3001\u66f4\u65b0\u6216\u522a\u9664\u64cd\u4f5c\u6642\uff0c\u6578\u64da\u5eab\u90fd\u9700\u8981\u66f4\u65b0\u76f8\u95dc\u7684\u7d22\u5f15\uff0c\u9019\u6703\u589e\u52a0\u984d\u5916\u7684\u958b\u92b7\u3002\u56e0\u6b64\uff0cDBA\u61c9\u8a72\u6839\u64da\u5be6\u969b\u9700\u6c42\u4f86\u9650\u5236\u7d22\u5f15\u7684\u6578\u91cf\uff0c\u4e26\u5b9a\u671f\u8a55\u4f30\u5176\u6709\u6548\u6027\u3002<\/p>\n<h2 id=\"%e7%b4%a2%e5%bc%95%e9%a1%9e%e5%9e%8b%e7%9a%84%e9%81%b8%e6%93%87-GzcWrdEodJ\">\u7d22\u5f15\u985e\u578b\u7684\u9078\u64c7<\/h2>\n<p>\u4e0d\u540c\u7684\u67e5\u8a62\u9700\u6c42\u5c0d\u7d22\u5f15\u985e\u578b\u6709\u4e0d\u540c\u7684\u8981\u6c42\u3002\u4f8b\u5982\uff0cB\u6a39\u7d22\u5f15\u9069\u5408\u7bc4\u570d\u67e5\u8a62\uff0c\u800c\u54c8\u5e0c\u7d22\u5f15\u5247\u9069\u5408\u7cbe\u78ba\u67e5\u8a62\u3002\u9078\u64c7\u5408\u9069\u7684\u7d22\u5f15\u985e\u578b\u53ef\u4ee5\u9032\u4e00\u6b65\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u3002<\/p>\n<pre><code>CREATE INDEX idx_user_name ON users(user_name);<\/code><\/pre>\n<h2 id=\"%e7%b4%a2%e5%bc%95%e7%9a%84%e7%b6%ad%e8%ad%b7%e8%88%87%e7%9b%a3%e6%8e%a7-GzcWrdEodJ\">\u7d22\u5f15\u7684\u7dad\u8b77\u8207\u76e3\u63a7<\/h2>\n<p>\u96a8\u8457\u6578\u64da\u7684\u589e\u9577\u548c\u8b8a\u5316\uff0c\u7d22\u5f15\u7684\u6027\u80fd\u53ef\u80fd\u6703\u4e0b\u964d\u3002\u56e0\u6b64\uff0c\u5b9a\u671f\u7684\u7d22\u5f15\u7dad\u8b77\u662f\u5fc5\u8981\u7684\u3002\u9019\u5305\u62ec\u91cd\u5efa\u548c\u91cd\u7d44\u7d22\u5f15\uff0c\u4ee5\u78ba\u4fdd\u5176\u6027\u80fd\u3002\u6b64\u5916\uff0c\u4f7f\u7528\u76e3\u63a7\u5de5\u5177\u4f86\u8ddf\u8e64\u7d22\u5f15\u7684\u4f7f\u7528\u60c5\u6cc1\uff0c\u53ef\u4ee5\u5e6b\u52a9DBA\u8b58\u5225\u4e0d\u518d\u9700\u8981\u7684\u7d22\u5f15\uff0c\u5f9e\u800c\u9032\u4e00\u6b65\u512a\u5316\u6027\u80fd\u3002<\/p>\n<h2 id=\"%e7%b5%90%e8%ab%96-GzcWrdEodJ\">\u7d50\u8ad6<\/h2>\n<p>\u516d\u9435\u5f8b\u70baSQL\u7d22\u5f15\u7684\u7ba1\u7406\u63d0\u4f9b\u4e86\u4e00\u500b\u6e05\u6670\u7684\u6307\u5c0e\u65b9\u91dd\u3002\u901a\u904e\u9075\u5faa\u9019\u4e9b\u539f\u5247\uff0c\u6578\u64da\u5eab\u7ba1\u7406\u54e1\u53ef\u4ee5\u6709\u6548\u5730\u8a2d\u8a08\u548c\u7ba1\u7406\u7d22\u5f15\uff0c\u5f9e\u800c\u63d0\u9ad8\u6578\u64da\u5eab\u7684\u6027\u80fd\u548c\u6548\u7387\u3002\u5728\u7576\u4eca\u6578\u64da\u9a45\u52d5\u7684\u4e16\u754c\u4e2d\uff0c\u826f\u597d\u7684\u7d22\u5f15\u7ba1\u7406\u662f\u78ba\u4fdd\u7cfb\u7d71\u7a69\u5b9a\u904b\u884c\u7684\u95dc\u9375\u3002<\/p>\n<p>\u5982\u9700\u4e86\u89e3\u66f4\u591a\u6709\u95dc<em><a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a><\/em>\u548c<em><a href=\"https:\/\/server.hk\">\u4f3a\u670d\u5668<\/a><\/em>\u7684\u8cc7\u8a0a\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22\u516d\u9435\u5f8b\u5982\u4f55\u5f71\u97ffSQL\u7d22\u5f15\u7ba1\u7406\uff0c\u63d0\u5347\u6578\u64da\u5eab\u6027\u80fd\u8207\u67e5\u8a62\u6548\u7387\uff0c\u52a9\u529b\u4f01\u696d\u6578\u64da\u512a\u5316\u7b56\u7565\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-168169","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/168169","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=168169"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/168169\/revisions"}],"predecessor-version":[{"id":168170,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/168169\/revisions\/168170"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=168169"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=168169"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=168169"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}