{"id":162921,"date":"2024-11-04T19:08:18","date_gmt":"2024-11-04T11:08:18","guid":{"rendered":"https:\/\/server.hk\/cnblog\/162921\/"},"modified":"2024-11-04T19:08:19","modified_gmt":"2024-11-04T11:08:19","slug":"%e6%95%99%e6%82%a8%e5%a6%82%e4%bd%95%e9%80%b2%e8%a1%8csql%e8%b7%a8%e8%a1%a8%e6%9b%b4%e6%96%b0","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/162921\/","title":{"rendered":"\u6559\u60a8\u5982\u4f55\u9032\u884cSQL\u8de8\u8868\u66f4\u65b0"},"content":{"rendered":"<h1 id=\"%e6%95%99%e6%82%a8%e5%a6%82%e4%bd%95%e9%80%b2%e8%a1%8csql%e8%b7%a8%e8%a1%a8%e6%9b%b4%e6%96%b0-mEUPZtQAQG\">\u6559\u60a8\u5982\u4f55\u9032\u884cSQL\u8de8\u8868\u66f4\u65b0<\/h1>\n<p>\u5728\u8cc7\u6599\u5eab\u7ba1\u7406\u4e2d\uff0c\u8de8\u8868\u66f4\u65b0\u662f\u4e00\u500b\u5e38\u898b\u7684\u9700\u6c42\uff0c\u5c24\u5176\u662f\u5728\u9700\u8981\u6839\u64da\u4e00\u500b\u8868\u4e2d\u7684\u6578\u64da\u4f86\u66f4\u65b0\u53e6\u4e00\u500b\u8868\u7684\u60c5\u6cc1\u4e0b\u3002\u9019\u7a2e\u64cd\u4f5c\u901a\u5e38\u6d89\u53ca\u5230\u591a\u500b\u8868\u4e4b\u9593\u7684\u95dc\u806f\uff0c\u4e26\u4e14\u9700\u8981\u4f7f\u7528SQL\u8a9e\u53e5\u4f86\u5be6\u73fe\u3002\u672c\u6587\u5c07\u4ecb\u7d39\u5982\u4f55\u9032\u884cSQL\u8de8\u8868\u66f4\u65b0\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u7bc4\u4f8b\u548c\u6ce8\u610f\u4e8b\u9805\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e8%b7%a8%e8%a1%a8%e6%9b%b4%e6%96%b0%ef%bc%9f-mEUPZtQAQG\">\u4ec0\u9ebc\u662f\u8de8\u8868\u66f4\u65b0\uff1f<\/h2>\n<p>\u8de8\u8868\u66f4\u65b0\u662f\u6307\u5728\u4e00\u500bSQL\u8a9e\u53e5\u4e2d\uff0c\u6839\u64da\u4e00\u500b\u6216\u591a\u500b\u8868\u7684\u6578\u64da\u4f86\u66f4\u65b0\u53e6\u4e00\u500b\u8868\u7684\u6578\u64da\u3002\u9019\u7a2e\u64cd\u4f5c\u901a\u5e38\u7528\u65bc\u6578\u64da\u540c\u6b65\u3001\u6578\u64da\u6e05\u7406\u6216\u6578\u64da\u6574\u5408\u7b49\u5834\u666f\u3002\u8de8\u8868\u66f4\u65b0\u53ef\u4ee5\u63d0\u9ad8\u6578\u64da\u8655\u7406\u7684\u6548\u7387\uff0c\u6e1b\u5c11\u591a\u6b21\u67e5\u8a62\u7684\u9700\u8981\u3002<\/p>\n<h2 id=\"%e5%9f%ba%e6%9c%ac%e8%aa%9e%e6%b3%95-mEUPZtQAQG\">\u57fa\u672c\u8a9e\u6cd5<\/h2>\n<p>\u5728SQL\u4e2d\uff0c\u8de8\u8868\u66f4\u65b0\u901a\u5e38\u4f7f\u7528JOIN\u8a9e\u53e5\u4f86\u5be6\u73fe\u3002\u4ee5\u4e0b\u662f\u57fa\u672c\u7684\u8a9e\u6cd5\u7d50\u69cb\uff1a<\/p>\n<pre><code>UPDATE \u88681\nSET 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