{"id":135071,"date":"2024-10-31T07:25:15","date_gmt":"2024-10-30T23:25:15","guid":{"rendered":"https:\/\/server.hk\/cnblog\/135071\/"},"modified":"2024-10-31T07:25:16","modified_gmt":"2024-10-30T23:25:16","slug":"sns%e7%b6%b2%e7%ab%99%e6%95%b8%e6%93%9a%e5%ba%ab%e6%8a%80%e8%a1%93%e5%88%86%e6%9e%90","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/135071\/","title":{"rendered":"SNS\u7db2\u7ad9\u6578\u64da\u5eab\u6280\u8853\u5206\u6790"},"content":{"rendered":"<h1 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id=\"%e6%95%b8%e6%93%9a%e5%ba%ab%e8%a8%ad%e8%a8%88%e8%80%83%e9%87%8f-EBvWKQLFlb\">\u6578\u64da\u5eab\u8a2d\u8a08\u8003\u91cf<\/h2>\n<p>\u5728\u8a2d\u8a08SNS\u7db2\u7ad9\u7684\u6578\u64da\u5eab\u6642\uff0c\u9700\u8981\u8003\u616e\u4ee5\u4e0b\u5e7e\u500b\u65b9\u9762\uff1a<\/p>\n<h3 id=\"%e6%95%b8%e6%93%9a%e6%a8%a1%e5%9e%8b-EBvWKQLFlb\">\u6578\u64da\u6a21\u578b<\/h3>\n<p>\u6839\u64daSNS\u7684\u7279\u6027\uff0c\u6578\u64da\u6a21\u578b\u61c9\u8a72\u80fd\u5920\u9748\u6d3b\u5730\u652f\u6301\u7528\u6236\u8cc7\u6599\u3001\u5e16\u5b50\u3001\u8a55\u8ad6\u3001\u559c\u6b61\u7b49\u591a\u7a2e\u6578\u64da\u985e\u578b\u3002\u4f8b\u5982\uff0c\u53ef\u4ee5\u8a2d\u8a08\u4e00\u500b\u7528\u6236\u8868\u548c\u4e00\u500b\u5e16\u5b50\u8868\uff0c\u4e26\u901a\u904e\u5916\u9375\u95dc\u806f\u4f86\u5efa\u7acb\u5b83\u5011\u4e4b\u9593\u7684\u95dc\u4fc2\u3002<\/p>\n<pre><code>CREATE TABLE Users (\n    UserID INT PRIMARY KEY,\n    UserName VARCHAR(100),\n    Email VARCHAR(100)\n);\n\nCREATE TABLE Posts (\n    PostID INT PRIMARY KEY,\n    UserID INT,\n    Content TEXT,\n    FOREIGN KEY (UserID) REFERENCES Users(UserID)\n);<\/code><\/pre>\n<h3 id=\"%e6%80%a7%e8%83%bd%e5%84%aa%e5%8c%96-EBvWKQLFlb\">\u6027\u80fd\u512a\u5316<\/h3>\n<p>\u96a8\u8457\u7528\u6236\u6578\u91cf\u7684\u589e\u52a0\uff0c\u6578\u64da\u5eab\u7684\u6027\u80fd\u512a\u5316\u8b8a\u5f97\u5c24\u70ba\u91cd\u8981\u3002\u53ef\u4ee5\u901a\u904e\u7d22\u5f15\u3001\u5206\u5340\u548c\u7de9\u5b58\u7b49\u6280\u8853\u4f86\u63d0\u9ad8\u67e5\u8a62\u6548\u7387\u3002\u4f8b\u5982\uff0c\u5c0d\u65bc\u7d93\u5e38\u67e5\u8a62\u7684\u5b57\u6bb5\uff0c\u53ef\u4ee5\u5efa\u7acb\u7d22\u5f15\u4f86\u52a0\u901f\u67e5\u8a62\u901f\u5ea6\u3002<\/p>\n<pre><code>CREATE INDEX idx_user_email ON Users(Email);<\/code><\/pre>\n<h3 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