{"id":158735,"date":"2024-11-03T04:22:49","date_gmt":"2024-11-02T20:22:49","guid":{"rendered":"https:\/\/server.hk\/cnblog\/158735\/"},"modified":"2024-11-03T04:22:50","modified_gmt":"2024-11-02T20:22:50","slug":"%e9%97%9c%e8%81%af%e5%88%aa%e9%99%a4%ef%bc%9a%e9%ab%98%e6%95%88%e7%ae%a1%e7%90%86%e6%95%b8%e6%93%9a%e5%ba%ab%e6%95%b8%e6%93%9a%e7%9a%84%e7%a5%9e%e5%99%a8-%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84%e9%97%9c","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/158735\/","title":{"rendered":"\u95dc\u806f\u522a\u9664\uff1a\u9ad8\u6548\u7ba1\u7406\u6578\u64da\u5eab\u6578\u64da\u7684\u795e\u5668 (\u6578\u64da\u5eab\u7684\u95dc\u806f\u522a\u9664)"},"content":{"rendered":"<h1 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id=\"%e7%a4%ba%e4%be%8b-TJAgABgsXR\">\u793a\u4f8b<\/h3>\n<p>\u5047\u8a2d\u6211\u5011\u6709\u5169\u500b\u8868\uff1a<code>Users<\/code>\u548c<code>Orders<\/code>\u3002\u6bcf\u500b\u7528\u6236\u53ef\u4ee5\u6709\u591a\u500b\u8a02\u55ae\uff0c\u9019\u662f\u4e00\u7a2e\u4e00\u5c0d\u591a\u7684\u95dc\u806f\u3002\u5982\u679c\u6211\u5011\u522a\u9664\u4e00\u500b\u7528\u6236\u7684\u8a18\u9304\uff0c\u6240\u6709\u8207\u8a72\u7528\u6236\u76f8\u95dc\u7684\u8a02\u55ae\u8a18\u9304\u4e5f\u61c9\u8a72\u88ab\u522a\u9664\u3002\u4ee5\u4e0b\u662f SQL \u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>CREATE TABLE Users (\n    UserID INT PRIMARY KEY,\n    UserName VARCHAR(100)\n);\n\nCREATE TABLE Orders (\n    OrderID INT PRIMARY KEY,\n    UserID INT,\n    OrderDate DATE,\n    FOREIGN KEY (UserID) REFERENCES Users(UserID) ON DELETE CASCADE\n);\n<\/code><\/pre>\n<p>\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0c\u7576\u6211\u5011\u522a\u9664\u4e00\u500b\u7528\u6236\u6642\uff0c\u6240\u6709\u8207\u8a72\u7528\u6236\u76f8\u95dc\u7684\u8a02\u55ae\u5c07\u81ea\u52d5\u88ab\u522a\u9664\uff0c\u9019\u5c31\u662f\u95dc\u806f\u522a\u9664\u7684\u5be6\u73fe\u3002<\/p>\n<h2 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