{"id":185962,"date":"2024-11-11T01:57:23","date_gmt":"2024-11-10T17:57:23","guid":{"rendered":"https:\/\/server.hk\/cnblog\/185962\/"},"modified":"2024-11-11T01:57:24","modified_gmt":"2024-11-10T17:57:24","slug":"%e6%95%b8%e6%93%9a%e5%ba%abid%e4%b8%8d%e7%82%ba%e7%a9%ba%e4%bf%9d%e9%9a%9c%e6%95%b8%e6%93%9a%e5%ae%8c%e6%95%b4%e6%80%a7%ef%bc%88%e6%95%b8%e6%93%9a%e5%ba%abid-not-null%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/185962\/","title":{"rendered":"\u6578\u64da\u5eabID\u4e0d\u70ba\u7a7a\u4fdd\u969c\u6578\u64da\u5b8c\u6574\u6027\uff08\u6578\u64da\u5eabid not null\uff09"},"content":{"rendered":"<h1 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id=\"%e5%a6%82%e4%bd%95%e8%a8%ad%e7%bd%aeid%e5%ad%97%e6%ae%b5%e7%82%ba%e4%b8%8d%e7%82%ba%e7%a9%ba%ef%bc%9f-IlcXXRRvpm\">\u5982\u4f55\u8a2d\u7f6eID\u5b57\u6bb5\u70ba\u4e0d\u70ba\u7a7a\uff1f<\/h2>\n<p>\u5728\u5275\u5efa\u6578\u64da\u8868\u6642\uff0c\u53ef\u4ee5\u901a\u904eSQL\u8a9e\u53e5\u4f86\u8a2d\u7f6eID\u5b57\u6bb5\u70ba\u4e0d\u70ba\u7a7a\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>CREATE TABLE users (\n    id INT AUTO_INCREMENT NOT NULL,\n    username VARCHAR(50) NOT NULL,\n    email VARCHAR(100) NOT NULL,\n    PRIMARY KEY (id)\n);<\/code><\/pre>\n<p>\u5728\u9019\u500b\u793a\u4f8b\u4e2d\uff0cID\u5b57\u6bb5\u88ab\u8a2d\u7f6e\u70ba\u81ea\u589e\uff08AUTO_INCREMENT\uff09\u4e26\u4e14\u4e0d\u70ba\u7a7a\uff08NOT NULL\uff09\uff0c\u9019\u6a23\u6bcf\u7576\u63d2\u5165\u4e00\u689d\u65b0\u8a18\u9304\u6642\uff0c\u6578\u64da\u5eab\u6703\u81ea\u52d5\u751f\u6210\u4e00\u500b\u552f\u4e00\u7684ID\u3002<\/p>\n<h2 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