{"id":179912,"date":"2024-11-09T05:50:18","date_gmt":"2024-11-08T21:50:18","guid":{"rendered":"https:\/\/server.hk\/cnblog\/179912\/"},"modified":"2024-11-09T05:50:19","modified_gmt":"2024-11-08T21:50:19","slug":"%e5%a6%82%e4%bd%95%e5%9c%a8%e4%b8%80%e5%b0%8d%e5%a4%9a%e7%9a%84%e9%97%9c%e4%bf%82%e4%b8%ad%e6%8a%8a%e5%85%a9%e8%a1%a8-join-%e6%88%90%e4%b8%80%e8%a1%8c","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/179912\/","title":{"rendered":"\u5982\u4f55\u5728\u4e00\u5c0d\u591a\u7684\u95dc\u4fc2\u4e2d\u628a\u5169\u8868 Join \u6210\u4e00\u884c"},"content":{"rendered":"<h1 id=\"%e5%a6%82%e4%bd%95%e5%9c%a8%e4%b8%80%e5%b0%8d%e5%a4%9a%e7%9a%84%e9%97%9c%e4%bf%82%e4%b8%ad%e6%8a%8a%e5%85%a9%e8%a1%a8-join-%e6%88%90%e4%b8%80%e8%a1%8c-jLEoMHzvfl\">\u5982\u4f55\u5728\u4e00\u5c0d\u591a\u7684\u95dc\u4fc2\u4e2d\u628a\u5169\u8868 Join 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\u64cd\u4f5c\u7528\u65bc\u5c07\u4f86\u81ea\u5169\u500b\u6216\u591a\u500b\u8868\u7684\u8cc7\u6599\u6839\u64da\u67d0\u4e9b\u689d\u4ef6\u9032\u884c\u5408\u4f75\u3002\u5c0d\u65bc\u4e00\u5c0d\u591a\u7684\u95dc\u4fc2\uff0c\u6211\u5011\u901a\u5e38\u4f7f\u7528 INNER JOIN \u6216 LEFT JOIN \u4f86\u7372\u53d6\u6240\u9700\u7684\u8cc7\u6599\u3002<\/p>\n<h3 id=\"%e7%af%84%e4%be%8b%e8%b3%87%e6%96%99%e8%a1%a8-jLEoMHzvfl\">\u7bc4\u4f8b\u8cc7\u6599\u8868<\/h3>\n<p>\u5047\u8a2d\u6211\u5011\u6709\u4ee5\u4e0b\u5169\u500b\u8868\uff1a<\/p>\n<ul>\n<li><strong>\u9867\u5ba2\u8868 (Customers)<\/strong>\n<ul>\n<li>CustomerID<\/li>\n<li>Name<\/li>\n<\/ul>\n<\/li>\n<li><strong>\u8a02\u55ae\u8868 (Orders)<\/strong>\n<ul>\n<li>OrderID<\/li>\n<li>CustomerID<\/li>\n<li>OrderDate<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h3 id=\"%e4%bd%bf%e7%94%a8-inner-join-jLEoMHzvfl\">\u4f7f\u7528 INNER JOIN<\/h3>\n<p>\u5982\u679c\u6211\u5011\u60f3\u8981\u67e5\u8a62\u6bcf\u4f4d\u9867\u5ba2\u53ca\u5176\u6240\u6709\u8a02\u55ae\u7684\u8cc7\u8a0a\uff0c\u53ef\u4ee5\u4f7f\u7528 INNER JOIN\u3002\u4ee5\u4e0b\u662f SQL \u67e5\u8a62\u7684\u7bc4\u4f8b\uff1a<\/p>\n<pre><code>SELECT Customers.CustomerID, Customers.Name, Orders.OrderID, Orders.OrderDate\nFROM Customers\nINNER JOIN Orders ON Customers.CustomerID = Orders.CustomerID;<\/code><\/pre>\n<p>\u9019\u500b\u67e5\u8a62\u5c07\u8fd4\u56de\u6bcf\u4f4d\u9867\u5ba2\u53ca\u5176\u5c0d\u61c9\u7684\u8a02\u55ae\u8cc7\u6599\uff0c\u4f46\u6bcf\u4f4d\u9867\u5ba2\u7684\u8cc7\u6599\u6703\u91cd\u8907\u51fa\u73fe\uff0c\u56e0\u70ba\u6bcf\u4f4d\u9867\u5ba2\u53ef\u80fd\u6709\u591a\u500b\u8a02\u55ae\u3002<\/p>\n<h3 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