{"id":187286,"date":"2024-11-11T13:00:23","date_gmt":"2024-11-11T05:00:23","guid":{"rendered":"https:\/\/server.hk\/cnblog\/187286\/"},"modified":"2024-11-11T13:00:24","modified_gmt":"2024-11-11T05:00:24","slug":"%e6%95%b8%e6%93%9a%e5%ba%ab%e7%b4%a2%e5%bc%95%e7%9a%84%e4%bd%9c%e7%94%a8%e5%92%8c%e5%8e%9f%e7%90%86-%e6%95%b8%e6%93%9a%e5%ba%ab-index","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/187286\/","title":{"rendered":"\u6578\u64da\u5eab\u7d22\u5f15\u7684\u4f5c\u7528\u548c\u539f\u7406 (\u6578\u64da\u5eab index)"},"content":{"rendered":"<h1 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id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e6%95%b8%e6%93%9a%e5%ba%ab%e7%b4%a2%e5%bc%95%ef%bc%9f-bRKnRCYXFl\">\u4ec0\u9ebc\u662f\u6578\u64da\u5eab\u7d22\u5f15\uff1f<\/h2>\n<p>\u6578\u64da\u5eab\u7d22\u5f15\u662f\u4e00\u7a2e\u6578\u64da\u7d50\u69cb\uff0c\u65e8\u5728\u52a0\u901f\u6578\u64da\u6aa2\u7d22\u64cd\u4f5c\u3002\u5b83\u985e\u4f3c\u65bc\u66f8\u7c4d\u7684\u76ee\u9304\uff0c\u5e6b\u52a9\u7528\u6236\u5feb\u901f\u627e\u5230\u6240\u9700\u7684\u4fe1\u606f\u3002\u7d22\u5f15\u53ef\u4ee5\u57fa\u65bc\u4e00\u500b\u6216\u591a\u500b\u5217\u5275\u5efa\uff0c\u4e26\u4e14\u53ef\u4ee5\u662f\u552f\u4e00\u7684\u6216\u975e\u552f\u4e00\u7684\u3002\u5e38\u898b\u7684\u7d22\u5f15\u985e\u578b\u5305\u62ecB\u6a39\u7d22\u5f15\u3001\u54c8\u5e0c\u7d22\u5f15\u548c\u5168\u6587\u7d22\u5f15\u7b49\u3002<\/p>\n<h2 id=\"%e6%95%b8%e6%93%9a%e5%ba%ab%e7%b4%a2%e5%bc%95%e7%9a%84%e4%bd%9c%e7%94%a8-bRKnRCYXFl\">\u6578\u64da\u5eab\u7d22\u5f15\u7684\u4f5c\u7528<\/h2>\n<ul>\n<li><strong>\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\uff1a<\/strong>\u7d22\u5f15\u80fd\u5920\u986f\u8457\u6e1b\u5c11\u67e5\u8a62\u6240\u9700\u7684\u6642\u9593\uff0c\u7279\u5225\u662f\u5728\u8655\u7406\u5927\u91cf\u6578\u64da\u6642\u3002\u4f8b\u5982\uff0c\u5c0d\u65bc\u4e00\u500b\u5305\u542b\u6578\u767e\u842c\u689d\u8a18\u9304\u7684\u8868\uff0c\u6c92\u6709\u7d22\u5f15\u7684\u67e5\u8a62\u53ef\u80fd\u9700\u8981\u6383\u63cf\u6574\u500b\u8868\uff0c\u800c\u6709\u7d22\u5f15\u7684\u67e5\u8a62\u5247\u53ef\u4ee5\u76f4\u63a5\u5b9a\u4f4d\u5230\u6240\u9700\u7684\u6578\u64da\u3002<\/li>\n<li><strong>\u52a0\u901f\u6392\u5e8f\u548c\u904e\u6ffe\uff1a<\/strong>\u7d22\u5f15\u4e0d\u50c5\u80fd\u52a0\u5feb\u67e5\u8a62\u901f\u5ea6\uff0c\u9084\u80fd\u63d0\u9ad8\u6392\u5e8f\u548c\u904e\u6ffe\u64cd\u4f5c\u7684\u6548\u7387\u3002\u7576\u4f7f\u7528ORDER BY\u6216WHERE\u5b50\u53e5\u6642\uff0c\u6578\u64da\u5eab\u53ef\u4ee5\u5229\u7528\u7d22\u5f15\u4f86\u5feb\u901f\u627e\u5230\u7b26\u5408\u689d\u4ef6\u7684\u8a18\u9304\u3002<\/li>\n<li><strong>\u652f\u6301\u552f\u4e00\u6027\u7d04\u675f\uff1a<\/strong>\u7d22\u5f15\u53ef\u4ee5\u7528\u4f86\u5f37\u5236\u552f\u4e00\u6027\u7d04\u675f\uff0c\u78ba\u4fdd\u67d0\u4e9b\u5217\u4e2d\u7684\u6578\u64da\u4e0d\u6703\u91cd\u8907\u3002\u4f8b\u5982\uff0c\u5728\u7528\u6236\u8868\u4e2d\uff0c\u96fb\u5b50\u90f5\u4ef6\u5730\u5740\u901a\u5e38\u9700\u8981\u662f\u552f\u4e00\u7684\uff0c\u9019\u53ef\u4ee5\u901a\u904e\u5275\u5efa\u552f\u4e00\u7d22\u5f15\u4f86\u5be6\u73fe\u3002<\/li>\n<\/ul>\n<h2 id=\"%e6%95%b8%e6%93%9a%e5%ba%ab%e7%b4%a2%e5%bc%95%e7%9a%84%e5%8e%9f%e7%90%86-bRKnRCYXFl\">\u6578\u64da\u5eab\u7d22\u5f15\u7684\u539f\u7406<\/h2>\n<p>\u6578\u64da\u5eab\u7d22\u5f15\u7684\u5de5\u4f5c\u539f\u7406\u4e3b\u8981\u4f9d\u8cf4\u65bc\u6578\u64da\u7d50\u69cb\u7684\u8a2d\u8a08\u3002\u6700\u5e38\u898b\u7684\u7d22\u5f15\u985e\u578b\u662fB\u6a39\u7d22\u5f15\u3002B\u6a39\u662f\u4e00\u7a2e\u81ea\u5e73\u8861\u7684\u6a39\u5f62\u6578\u64da\u7d50\u69cb\uff0c\u80fd\u5920\u4fdd\u6301\u6578\u64da\u6709\u5e8f\u4e26\u652f\u6301\u9ad8\u6548\u7684\u63d2\u5165\u3001\u522a\u9664\u548c\u67e5\u8a62\u64cd\u4f5c\u3002<\/p>\n<h3 id=\"b%e6%a8%b9%e7%b4%a2%e5%bc%95%e7%9a%84%e7%b5%90%e6%a7%8b-bRKnRCYXFl\">B\u6a39\u7d22\u5f15\u7684\u7d50\u69cb<\/h3>\n<p>B\u6a39\u7531\u591a\u500b\u7bc0\u9ede\u7d44\u6210\uff0c\u6bcf\u500b\u7bc0\u9ede\u53ef\u4ee5\u5305\u542b\u591a\u500b\u9375\u503c\u548c\u6307\u5411\u5b50\u7bc0\u9ede\u7684\u6307\u91dd\u3002\u6839\u7bc0\u9ede\u4f4d\u65bc\u6a39\u7684\u9802\u90e8\uff0c\u8449\u5b50\u7bc0\u9ede\u5247\u4f4d\u65bc\u6a39\u7684\u5e95\u90e8\u3002\u7576\u7528\u6236\u767c\u51fa\u67e5\u8a62\u8acb\u6c42\u6642\uff0c\u6578\u64da\u5eab\u7cfb\u7d71\u6703\u5f9e\u6839\u7bc0\u9ede\u958b\u59cb\uff0c\u6839\u64da\u67e5\u8a62\u689d\u4ef6\u9010\u5c64\u5411\u4e0b\u67e5\u627e\uff0c\u76f4\u5230\u627e\u5230\u5339\u914d\u7684\u8a18\u9304\u3002<\/p>\n<pre><code>\nSELECT * FROM users WHERE email = 'example@example.com';\n<\/code><\/pre>\n<p>\u5728\u9019\u500b\u67e5\u8a62\u4e2d\uff0c\u5982\u679c\u5c0d\u96fb\u5b50\u90f5\u4ef6\u5217\u5275\u5efa\u4e86\u7d22\u5f15\uff0c\u6578\u64da\u5eab\u5c07\u80fd\u5920\u5feb\u901f\u5b9a\u4f4d\u5230\u76f8\u61c9\u7684\u8a18\u9304\uff0c\u800c\u4e0d\u5fc5\u9010\u884c\u6383\u63cf\u6574\u500b\u8868\u3002<\/p>\n<h3 id=\"%e7%b4%a2%e5%bc%95%e7%9a%84%e6%88%90%e6%9c%ac-bRKnRCYXFl\">\u7d22\u5f15\u7684\u6210\u672c<\/h3>\n<p>\u5118\u7ba1\u7d22\u5f15\u80fd\u5920\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\uff0c\u4f46\u5b83\u5011\u4e5f\u6703\u5e36\u4f86\u4e00\u4e9b\u6210\u672c\u3002\u9996\u5148\uff0c\u7d22\u5f15\u6703\u4f54\u7528\u984d\u5916\u7684\u5b58\u5132\u7a7a\u9593\u3002\u5176\u6b21\uff0c\u7576\u5c0d\u8868\u9032\u884c\u63d2\u5165\u3001\u66f4\u65b0\u6216\u522a\u9664\u64cd\u4f5c\u6642\uff0c\u7d22\u5f15\u4e5f\u9700\u8981\u9032\u884c\u76f8\u61c9\u7684\u66f4\u65b0\uff0c\u9019\u53ef\u80fd\u6703\u5c0e\u81f4\u6027\u80fd\u4e0b\u964d\u3002\u56e0\u6b64\uff0c\u5728\u8a2d\u8a08\u6578\u64da\u5eab\u6642\uff0c\u9700\u8981\u6839\u64da\u5be6\u969b\u9700\u6c42\u8b39\u614e\u9078\u64c7\u7d22\u5f15\u3002<\/p>\n<h2 id=\"%e7%b5%90%e8%ab%96-bRKnRCYXFl\">\u7d50\u8ad6<\/h2>\n<p>\u6578\u64da\u5eab\u7d22\u5f15\u5728\u63d0\u9ad8\u67e5\u8a62\u6548\u7387\u3001\u52a0\u901f\u6392\u5e8f\u548c\u904e\u6ffe\u3001\u4ee5\u53ca\u652f\u6301\u552f\u4e00\u6027\u7d04\u675f\u65b9\u9762\u767c\u63ee\u8457\u91cd\u8981\u4f5c\u7528\u3002\u7406\u89e3\u7d22\u5f15\u7684\u539f\u7406\u548c\u4f7f\u7528\u5834\u666f\uff0c\u80fd\u5920\u5e6b\u52a9\u958b\u767c\u8005\u66f4\u6709\u6548\u5730\u8a2d\u8a08\u548c\u512a\u5316\u6578\u64da\u5eab\u7cfb\u7d71\u3002\u5728\u9078\u64c7\u7d22\u5f15\u6642\uff0c\u61c9\u8003\u616e\u5230\u5176\u5e36\u4f86\u7684\u5b58\u5132\u548c\u6027\u80fd\u6210\u672c\uff0c\u4ee5\u9054\u5230\u6700\u4f73\u7684\u6578\u64da\u5eab\u6027\u80fd\u3002<\/p>\n<p>\u5982\u9700\u4e86\u89e3\u66f4\u591a\u6709\u95dc <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> 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