{"id":158739,"date":"2024-11-03T04:24:20","date_gmt":"2024-11-02T20:24:20","guid":{"rendered":"https:\/\/server.hk\/cnblog\/158739\/"},"modified":"2024-11-03T04:24:21","modified_gmt":"2024-11-02T20:24:21","slug":"%e9%97%9c%e4%bf%82%e6%95%b8%e6%93%9a%e5%ba%ab%e9%82%8f%e8%bc%af%e8%a8%ad%e8%a8%88%ef%bc%9a%e5%be%9e%e8%a1%a8%e7%b5%90%e6%a7%8b%e5%88%b0%e9%97%9c%e4%bf%82%e6%a8%a1%e5%bc%8f-%e9%97%9c%e4%bf%82%e6%95%b8","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/158739\/","title":{"rendered":"\u95dc\u4fc2\u6578\u64da\u5eab\u908f\u8f2f\u8a2d\u8a08\uff1a\u5f9e\u8868\u7d50\u69cb\u5230\u95dc\u4fc2\u6a21\u5f0f (\u95dc\u4fc2\u6578\u64da\u5eab\u908f\u8f2f\u8a2d\u8a08)"},"content":{"rendered":"<h1 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TABLE Users (\n    UserID INT PRIMARY KEY,\n    UserName VARCHAR(100),\n    Email VARCHAR(100),\n    CreatedAt DATETIME\n);\n<\/code><\/pre>\n<h2 id=\"%e9%97%9c%e4%bf%82%e6%a8%a1%e5%bc%8f%e7%9a%84%e8%a8%ad%e8%a8%88-UqEIKWdkpI\">\u95dc\u4fc2\u6a21\u5f0f\u7684\u8a2d\u8a08<\/h2>\n<p>\u5728\u78ba\u5b9a\u4e86\u8868\u7d50\u69cb\u5f8c\uff0c\u63a5\u4e0b\u4f86\u9700\u8981\u8a2d\u8a08\u95dc\u4fc2\u6a21\u5f0f\u3002\u95dc\u4fc2\u6a21\u5f0f\u5b9a\u7fa9\u4e86\u8868\u4e4b\u9593\u7684\u95dc\u4fc2\uff0c\u901a\u5e38\u5305\u62ec\u4e00\u5c0d\u4e00\u3001\u4e00\u5c0d\u591a\u548c\u591a\u5c0d\u591a\u7684\u95dc\u4fc2\u3002\u9019\u4e9b\u95dc\u4fc2\u53ef\u4ee5\u901a\u904e\u5916\u9375\u4f86\u5be6\u73fe\u3002<\/p>\n<h3 id=\"%e4%b8%80%e5%b0%8d%e5%a4%9a%e9%97%9c%e4%bf%82-UqEIKWdkpI\">\u4e00\u5c0d\u591a\u95dc\u4fc2<\/h3>\n<p>\u4e00\u5c0d\u591a\u95dc\u4fc2\u662f\u6700\u5e38\u898b\u7684\u95dc\u4fc2\u985e\u578b\u3002\u4f8b\u5982\uff0c\u4e00\u500b\u7528\u6236\u53ef\u4ee5\u64c1\u6709\u591a\u500b\u8a02\u55ae\u3002\u5728\u9019\u7a2e\u60c5\u6cc1\u4e0b\uff0c\u8a02\u55ae\u8868\u5c07\u5305\u542b\u4e00\u500b\u5916\u9375\uff0c\u6307\u5411\u7528\u6236\u8868\u7684\u4e3b\u9375\u3002<\/p>\n<pre><code>\nCREATE TABLE Orders (\n    OrderID INT PRIMARY KEY,\n    UserID INT,\n    OrderDate DATETIME,\n    FOREIGN KEY (UserID) REFERENCES Users(UserID)\n);\n<\/code><\/pre>\n<h3 id=\"%e5%a4%9a%e5%b0%8d%e5%a4%9a%e9%97%9c%e4%bf%82-UqEIKWdkpI\">\u591a\u5c0d\u591a\u95dc\u4fc2<\/h3>\n<p>\u591a\u5c0d\u591a\u95dc\u4fc2\u9700\u8981\u4e00\u500b\u806f\u7d50\u8868\u4f86\u5be6\u73fe\u3002\u4f8b\u5982\uff0c\u5047\u8a2d\u4e00\u500b\u7528\u6236\u53ef\u4ee5\u64c1\u6709\u591a\u500b\u89d2\u8272\uff0c\u800c\u4e00\u500b\u89d2\u8272\u4e5f\u53ef\u4ee5\u88ab\u591a\u500b\u7528\u6236\u64c1\u6709\u3002\u5728\u9019\u7a2e\u60c5\u6cc1\u4e0b\uff0c\u53ef\u4ee5\u5275\u5efa\u4e00\u500b\u7528\u6236\u89d2\u8272\u806f\u7d50\u8868\u3002<\/p>\n<pre><code>\nCREATE TABLE UserRoles (\n    UserID INT,\n    RoleID INT,\n    PRIMARY KEY (UserID, RoleID),\n    FOREIGN KEY (UserID) REFERENCES Users(UserID),\n    FOREIGN KEY (RoleID) REFERENCES Roles(RoleID)\n);\n<\/code><\/pre>\n<h2 id=\"%e6%95%b8%e6%93%9a%e5%ae%8c%e6%95%b4%e6%80%a7%e8%88%87%e7%b4%84%e6%9d%9f-UqEIKWdkpI\">\u6578\u64da\u5b8c\u6574\u6027\u8207\u7d04\u675f<\/h2>\n<p>\u5728\u908f\u8f2f\u8a2d\u8a08\u4e2d\uff0c\u6578\u64da\u5b8c\u6574\u6027\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002\u53ef\u4ee5\u901a\u904e\u8a2d\u7f6e\u7d04\u675f\u4f86\u78ba\u4fdd\u6578\u64da\u7684\u6709\u6548\u6027\u3002\u5e38\u898b\u7684\u7d04\u675f\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><strong>\u4e3b\u9375\u7d04\u675f\uff1a<\/strong>\u78ba\u4fdd\u6bcf\u884c\u6578\u64da\u7684\u552f\u4e00\u6027\u3002<\/li>\n<li><strong>\u5916\u9375\u7d04\u675f\uff1a<\/strong>\u78ba\u4fdd\u8868\u4e4b\u9593\u7684\u53c3\u8003\u5b8c\u6574\u6027\u3002<\/li>\n<li><strong>\u975e\u7a7a\u7d04\u675f\uff1a<\/strong>\u78ba\u4fdd\u67d0\u4e9b\u5b57\u6bb5\u4e0d\u80fd\u70ba\u7a7a\u3002<\/li>\n<li><strong>\u552f\u4e00\u7d04\u675f\uff1a<\/strong>\u78ba\u4fdd\u67d0\u4e9b\u5b57\u6bb5\u7684\u503c\u662f\u552f\u4e00\u7684\u3002<\/li>\n<\/ul>\n<h2 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