{"id":194799,"date":"2024-11-13T09:40:21","date_gmt":"2024-11-13T01:40:21","guid":{"rendered":"https:\/\/server.hk\/cnblog\/194799\/"},"modified":"2024-11-13T09:40:22","modified_gmt":"2024-11-13T01:40:22","slug":"%e5%a5%bd%e5%8f%8b%e6%95%b8%e6%93%9a%e5%ba%ab%e8%a8%ad%e8%a8%88%e6%8c%87%e5%8d%97%ef%bc%9a%e7%b0%a1%e5%96%ae%e5%af%a6%e7%94%a8%e7%9a%84%e6%b7%bb%e5%8a%a0%e5%a5%bd%e5%8f%8b%e6%96%b9%e6%b3%95-%e6%b7%bb","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/194799\/","title":{"rendered":"\u597d\u53cb\u6578\u64da\u5eab\u8a2d\u8a08\u6307\u5357\uff1a\u7c21\u55ae\u5be6\u7528\u7684\u6dfb\u52a0\u597d\u53cb\u65b9\u6cd5 (\u6dfb\u52a0\u597d\u53cb\u6578\u64da\u5eab\u8a2d\u8a08)"},"content":{"rendered":"<h1 id=\"%e5%a5%bd%e5%8f%8b%e6%95%b8%e6%93%9a%e5%ba%ab%e8%a8%ad%e8%a8%88%e6%8c%87%e5%8d%97%ef%bc%9a%e7%b0%a1%e5%96%ae%e5%af%a6%e7%94%a8%e7%9a%84%e6%b7%bb%e5%8a%a0%e5%a5%bd%e5%8f%8b%e6%96%b9%e6%b3%95-LrwRfPmvOI\">\u597d\u53cb\u6578\u64da\u5eab\u8a2d\u8a08\u6307\u5357\uff1a\u7c21\u55ae\u5be6\u7528\u7684\u6dfb\u52a0\u597d\u53cb\u65b9\u6cd5<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u793e\u4ea4\u5a92\u9ad4\u548c\u61c9\u7528\u7a0b\u5f0f\u4e2d\uff0c\u6dfb\u52a0\u597d\u53cb\u7684\u529f\u80fd\u662f\u7528\u6236\u4e92\u52d5\u7684\u91cd\u8981\u7d44\u6210\u90e8\u5206\u3002\u8a2d\u8a08\u4e00\u500b\u9ad8\u6548\u7684\u597d\u53cb\u6578\u64da\u5eab\u4e0d\u50c5\u80fd\u63d0\u5347\u7528\u6236\u9ad4\u9a57\uff0c\u9084\u80fd\u589e\u5f37\u61c9\u7528\u7684\u6574\u9ad4\u6027\u80fd\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u597d\u53cb\u6578\u64da\u5eab\u7684\u8a2d\u8a08\u539f\u5247\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u7c21\u55ae\u5be6\u7528\u7684\u6dfb\u52a0\u597d\u53cb\u65b9\u6cd5\u3002<\/p>\n<h2 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id=\"%e6%95%b8%e6%93%9a%e5%ba%ab%e8%a8%ad%e8%a8%88%e7%a4%ba%e4%be%8b-LrwRfPmvOI\">\u6578\u64da\u5eab\u8a2d\u8a08\u793a\u4f8b<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u6578\u64da\u5eab\u8a2d\u8a08\u793a\u4f8b\uff0c\u4f7f\u7528SQL\u8a9e\u8a00\u4f86\u5275\u5efa\u4e0a\u8ff0\u8868\u683c\uff1a<\/p>\n<pre><code>\nCREATE TABLE Users (\n    user_id INT PRIMARY KEY AUTO_INCREMENT,\n    username VARCHAR(50) NOT NULL,\n    email VARCHAR(100) NOT NULL UNIQUE\n);\n\nCREATE TABLE Friendships (\n    user_id INT,\n    friend_id INT,\n    status ENUM('pending', 'accepted', 'declined') DEFAULT 'pending',\n    PRIMARY KEY (user_id, friend_id),\n    FOREIGN KEY (user_id) REFERENCES Users(user_id),\n    FOREIGN KEY (friend_id) REFERENCES Users(user_id)\n);\n\nCREATE TABLE FriendRequests (\n    request_id INT PRIMARY KEY AUTO_INCREMENT,\n    sender_id INT,\n    receiver_id INT,\n    status ENUM('pending', 'accepted', 'declined') DEFAULT 'pending',\n    FOREIGN KEY (sender_id) REFERENCES Users(user_id),\n    FOREIGN KEY (receiver_id) REFERENCES Users(user_id)\n);\n<\/code><\/pre>\n<h2 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