{"id":173467,"date":"2024-11-07T18:16:22","date_gmt":"2024-11-07T10:16:22","guid":{"rendered":"https:\/\/server.hk\/cnblog\/173467\/"},"modified":"2024-11-07T18:16:22","modified_gmt":"2024-11-07T10:16:22","slug":"%e5%a6%82%e4%bd%95%e8%a6%8f%e7%af%84%e6%95%b8%e6%93%9a%e5%ba%ab%e5%91%bd%e5%90%8d%ef%bc%9f-%e6%95%b8%e6%93%9a%e5%ba%ab%e5%91%bd%e5%90%8d%e8%a6%8f%e7%af%84%e8%a7%a3%e6%9e%90-%e6%95%b8","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/173467\/","title":{"rendered":"\u5982\u4f55\u898f\u7bc4\u6578\u64da\u5eab\u547d\u540d\uff1f\u2014\u2014\u6578\u64da\u5eab\u547d\u540d\u898f\u7bc4\u89e3\u6790 (\u6578\u64da\u5eab\u7684\u547d\u540d\u898f\u7bc4)"},"content":{"rendered":"<h1 id=\"%e5%a6%82%e4%bd%95%e8%a6%8f%e7%af%84%e6%95%b8%e6%93%9a%e5%ba%ab%e5%91%bd%e5%90%8d%ef%bc%9f-%e6%95%b8%e6%93%9a%e5%ba%ab%e5%91%bd%e5%90%8d%e8%a6%8f%e7%af%84%e8%a7%a3%e6%9e%90-yrixRRaFGj\">\u5982\u4f55\u898f\u7bc4\u6578\u64da\u5eab\u547d\u540d\uff1f\u2014\u2014\u6578\u64da\u5eab\u547d\u540d\u898f\u7bc4\u89e3\u6790<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u8a2d\u8a08\u4e2d\uff0c\u547d\u540d\u898f\u7bc4\u662f\u4e00\u500b\u4e0d\u53ef\u5ffd\u8996\u7684\u91cd\u8981\u74b0\u7bc0\u3002\u826f\u597d\u7684\u547d\u540d\u898f\u7bc4\u4e0d\u50c5\u80fd\u63d0\u9ad8\u6578\u64da\u5eab\u7684\u53ef\u8b80\u6027\uff0c\u9084\u80fd\u4fc3\u9032\u5718\u968a\u5354\u4f5c\uff0c\u6e1b\u5c11\u672a\u4f86\u7dad\u8b77\u7684\u56f0\u96e3\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e\u6578\u64da\u5eab\u547d\u540d\u7684\u6700\u4f73\u5be6\u8e10\uff0c\u5e6b\u52a9\u958b\u767c\u8005\u548c\u6578\u64da\u5eab\u7ba1\u7406\u54e1\u5efa\u7acb\u4e00\u5957\u6709\u6548\u7684\u547d\u540d\u898f\u7bc4\u3002<\/p>\n<h2 id=\"%e5%91%bd%e5%90%8d%e8%a6%8f%e7%af%84%e7%9a%84%e9%87%8d%e8%a6%81%e6%80%a7-yrixRRaFGj\">\u547d\u540d\u898f\u7bc4\u7684\u91cd\u8981\u6027<\/h2>\n<p>\u6578\u64da\u5eab\u547d\u540d\u898f\u7bc4\u7684\u4e3b\u8981\u76ee\u7684\u662f\u70ba\u4e86\u78ba\u4fdd\u6578\u64da\u5eab\u7d50\u69cb\u7684\u6e05\u6670\u6027\u548c\u4e00\u81f4\u6027\u3002\u7576\u591a\u500b\u958b\u767c\u8005\u5171\u540c\u53c3\u8207\u4e00\u500b\u9805\u76ee\u6642\uff0c\u7d71\u4e00\u7684\u547d\u540d\u898f\u7bc4\u80fd\u5920\u6e1b\u5c11\u8aa4\u89e3\u548c\u6df7\u6dc6\uff0c\u5f9e\u800c\u63d0\u9ad8\u958b\u767c\u6548\u7387\u3002\u6b64\u5916\uff0c\u826f\u597d\u7684\u547d\u540d\u898f\u7bc4\u9084\u80fd\u5e6b\u52a9\u65b0\u6210\u54e1\u5feb\u901f\u7406\u89e3\u6578\u64da\u5eab\u7d50\u69cb\uff0c\u964d\u4f4e\u5b78\u7fd2\u66f2\u7dda\u3002<\/p>\n<h2 id=\"%e5%9f%ba%e6%9c%ac%e5%91%bd%e5%90%8d%e5%8e%9f%e5%89%87-yrixRRaFGj\">\u57fa\u672c\u547d\u540d\u539f\u5247<\/h2>\n<ul>\n<li><strong>\u6e05\u6670\u6027\uff1a<\/strong>\u547d\u540d\u61c9\u8a72\u80fd\u5920\u6e05\u695a\u5730\u8868\u9054\u5176\u6240\u4ee3\u8868\u7684\u5167\u5bb9\u3002\u4f8b\u5982\uff0c\u8868\u540d\u53ef\u4ee5\u4f7f\u7528 <code>users<\/code> \u4f86\u8868\u793a\u7528\u6236\u4fe1\u606f\uff0c\u800c\u4e0d\u662f\u4f7f\u7528\u6a21\u7cca\u7684\u540d\u7a31\u5982 <code>data1<\/code>\u3002<\/li>\n<li><strong>\u4e00\u81f4\u6027\uff1a<\/strong>\u5728\u6574\u500b\u6578\u64da\u5eab\u4e2d\uff0c\u61c9\u8a72\u4fdd\u6301\u4e00\u81f4\u7684\u547d\u540d\u98a8\u683c\u3002\u4f8b\u5982\uff0c\u5982\u679c\u9078\u64c7\u4f7f\u7528\u5c0f\u5beb\u5b57\u6bcd\u548c\u4e0b\u5283\u7dda\u5206\u9694\u55ae\u8a5e\uff08\u5982 <code>order_items<\/code>\uff09\uff0c\u90a3\u9ebc\u6240\u6709\u8868\u540d\u548c\u5217\u540d\u90fd\u61c9\u9075\u5faa\u9019\u4e00\u898f\u5247\u3002<\/li>\n<li><strong>\u7c21\u6f54\u6027\uff1a<\/strong>\u547d\u540d\u61c9\u8a72\u7c21\u6f54\u660e\u4e86\uff0c\u907f\u514d\u4f7f\u7528\u904e\u9577\u7684\u540d\u7a31\u3002\u904e\u9577\u7684\u540d\u7a31\u4e0d\u50c5\u96e3\u4ee5\u8a18\u61b6\uff0c\u9084\u53ef\u80fd\u5728\u67e5\u8a62\u6642\u9020\u6210\u4e0d\u4fbf\u3002<\/li>\n<li><strong>\u907f\u514d\u4f7f\u7528\u4fdd\u7559\u5b57\uff1a<\/strong>\u5728\u547d\u540d\u6642\uff0c\u61c9\u907f\u514d\u4f7f\u7528\u6578\u64da\u5eab\u7cfb\u7d71\u7684\u4fdd\u7559\u5b57\uff0c\u4ee5\u514d\u9020\u6210\u8a9e\u6cd5\u932f\u8aa4\u3002\u4f8b\u5982\uff0c\u5728 SQL \u4e2d\uff0c<code>select<\/code> \u548c <code>table<\/code> \u662f\u4fdd\u7559\u5b57\uff0c\u61c9\u907f\u514d\u7528\u4f5c\u8868\u540d\u6216\u5217\u540d\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%85%b7%e9%ab%94%e5%91%bd%e5%90%8d%e8%a6%8f%e7%af%84-yrixRRaFGj\">\u5177\u9ad4\u547d\u540d\u898f\u7bc4<\/h2>\n<h3 id=\"%e8%a1%a8%e5%90%8d%e5%91%bd%e5%90%8d%e8%a6%8f%e7%af%84-yrixRRaFGj\">\u8868\u540d\u547d\u540d\u898f\u7bc4<\/h3>\n<p>\u8868\u540d\u901a\u5e38\u61c9\u8a72\u4f7f\u7528\u8907\u6578\u5f62\u5f0f\uff0c\u4ee5\u8868\u793a\u8868\u4e2d\u53ef\u80fd\u5305\u542b\u591a\u689d\u8a18\u9304\u3002\u4f8b\u5982\uff0c\u5c0d\u65bc\u7528\u6236\u4fe1\u606f\u7684\u8868\uff0c\u53ef\u4ee5\u547d\u540d\u70ba <code>users<\/code>\uff0c\u800c\u4e0d\u662f <code>user<\/code>\u3002\u9019\u6a23\u7684\u547d\u540d\u65b9\u5f0f\u80fd\u5920\u66f4\u597d\u5730\u53cd\u6620\u8868\u7684\u5167\u5bb9\u3002<\/p>\n<h3 id=\"%e5%88%97%e5%90%8d%e5%91%bd%e5%90%8d%e8%a6%8f%e7%af%84-yrixRRaFGj\">\u5217\u540d\u547d\u540d\u898f\u7bc4<\/h3>\n<p>\u5217\u540d\u61c9\u8a72\u6e05\u695a\u5730\u63cf\u8ff0\u5176\u5b58\u5132\u7684\u6578\u64da\u3002\u4f8b\u5982\uff0c\u5c0d\u65bc\u7528\u6236\u7684\u96fb\u5b50\u90f5\u4ef6\u5730\u5740\uff0c\u53ef\u4ee5\u4f7f\u7528 <code>email_address<\/code> \u4f5c\u70ba\u5217\u540d\uff0c\u800c\u4e0d\u662f\u7c21\u55ae\u7684 <code>email<\/code>\u3002\u9019\u6a23\u53ef\u4ee5\u907f\u514d\u8207\u5176\u4ed6\u53ef\u80fd\u7684\u96fb\u5b50\u90f5\u4ef6\u5b57\u6bb5\u6df7\u6dc6\u3002<\/p>\n<h3 id=\"%e7%b4%a2%e5%bc%95%e5%92%8c%e7%b4%84%e6%9d%9f%e5%91%bd%e5%90%8d%e8%a6%8f%e7%af%84-yrixRRaFGj\">\u7d22\u5f15\u548c\u7d04\u675f\u547d\u540d\u898f\u7bc4<\/h3>\n<p>\u7d22\u5f15\u548c\u7d04\u675f\u7684\u547d\u540d\u4e5f\u61c9\u9075\u5faa\u4e00\u5b9a\u7684\u898f\u7bc4\u3002\u901a\u5e38\u53ef\u4ee5\u4f7f\u7528 <code>idx_<\/code> \u524d\u7db4\u4f86\u8868\u793a\u7d22\u5f15\uff0c\u4f8b\u5982 <code>idx_users_email<\/code>\uff0c\u800c\u7d04\u675f\u5247\u53ef\u4ee5\u4f7f\u7528 <code>chk_<\/code> \u524d\u7db4\uff0c\u4f8b\u5982 <code>chk_users_age<\/code>\u3002<\/p>\n<h2 id=\"%e5%91%bd%e5%90%8d%e7%a4%ba%e4%be%8b-yrixRRaFGj\">\u547d\u540d\u793a\u4f8b<\/h2>\n<pre><code>\n-- \u8868\u540d\nCREATE TABLE users (\n    id INT PRIMARY KEY,\n    email_address VARCHAR(255) NOT NULL,\n    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP\n);\n\n-- \u7d22\u5f15\nCREATE INDEX idx_users_email ON users(email_address);\n<\/code><\/pre>\n<h2 id=\"%e7%b5%90%e8%ab%96-yrixRRaFGj\">\u7d50\u8ad6<\/h2>\n<p>\u6578\u64da\u5eab\u547d\u540d\u898f\u7bc4\u662f\u6578\u64da\u5eab\u8a2d\u8a08\u4e2d\u4e0d\u53ef\u6216\u7f3a\u7684\u4e00\u90e8\u5206\u3002\u901a\u904e\u9075\u5faa\u6e05\u6670\u6027\u3001\u4e00\u81f4\u6027\u3001\u7c21\u6f54\u6027\u548c\u907f\u514d\u4f7f\u7528\u4fdd\u7559\u5b57\u7b49\u57fa\u672c\u539f\u5247\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u5efa\u7acb\u4e00\u500b\u6613\u65bc\u7406\u89e3\u548c\u7dad\u8b77\u7684\u6578\u64da\u5eab\u7d50\u69cb\u3002\u826f\u597d\u7684\u547d\u540d\u898f\u7bc4\u4e0d\u50c5\u80fd\u63d0\u9ad8\u958b\u767c\u6548\u7387\uff0c\u9084\u80fd\u4fc3\u9032\u5718\u968a\u5408\u4f5c\uff0c\u70ba\u672a\u4f86\u7684\u64f4\u5c55\u548c\u7dad\u8b77\u6253\u4e0b\u826f\u597d\u7684\u57fa\u790e\u3002<\/p>\n<p>\u5982\u9700\u4e86\u89e3\u66f4\u591a\u95dc\u65bc <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u548c\u6578\u64da\u5eab\u7ba1\u7406\u7684\u8cc7\u8a0a\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3\u6578\u64da\u5eab\u547d\u540d\u898f\u7bc4\u7684\u91cd\u8981\u6027\uff0c\u638c\u63e1\u6709\u6548\u7684\u547d\u540d\u6280\u5de7\uff0c\u63d0\u5347\u6578\u64da\u5eab\u7ba1\u7406\u7684\u6e05\u6670\u5ea6\u8207\u4e00\u81f4\u6027\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-173467","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/173467","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=173467"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/173467\/revisions"}],"predecessor-version":[{"id":173468,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/173467\/revisions\/173468"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=173467"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=173467"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=173467"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}