{"id":80345,"date":"2024-10-16T14:14:04","date_gmt":"2024-10-16T06:14:04","guid":{"rendered":"https:\/\/server.hk\/cnblog\/80345\/"},"modified":"2024-10-16T14:14:04","modified_gmt":"2024-10-16T06:14:04","slug":"mysql%e4%b8%ad%e7%9a%84datetime%e8%88%87timestamp%e6%af%94%e8%bc%83","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/80345\/","title":{"rendered":"MySQL\u4e2d\u7684datetime\u8207timestamp\u6bd4\u8f03"},"content":{"rendered":"<h1 id=\"mysql%e4%b8%ad%e7%9a%84datetime%e8%88%87timestamp%e6%af%94%e8%bc%83-NKWSqPreUf\">MySQL\u4e2d\u7684datetime\u8207timestamp\u6bd4\u8f03<\/h1>\n<p>\u5728MySQL\u4e2d\uff0c<code>DATETIME<\/code>\u548c<code>TIMESTAMP<\/code>\u662f\u5169\u7a2e\u5e38\u7528\u7684\u65e5\u671f\u6642\u9593\u6578\u64da\u985e\u578b\u3002\u96d6\u7136\u5b83\u5011\u7684\u529f\u80fd\u76f8\u4f3c\uff0c\u4f46\u5728\u5b58\u5132\u65b9\u5f0f\u3001\u7bc4\u570d\u548c\u4f7f\u7528\u5834\u666f\u4e0a\u537b\u5b58\u5728\u4e00\u4e9b\u91cd\u8981\u7684\u5dee\u7570\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e\u9019\u5169\u8005\u7684\u7279\u9ede\uff0c\u5e6b\u52a9\u958b\u767c\u8005\u5728\u9078\u64c7\u6642\u505a\u51fa\u660e\u667a\u7684\u6c7a\u7b56\u3002<\/p>\n<h2 id=\"datetime%e7%9a%84%e7%89%b9%e9%bb%9e-NKWSqPreUf\">DATETIME\u7684\u7279\u9ede<\/h2>\n<p><code>DATETIME<\/code>\u985e\u578b\u7528\u65bc\u8868\u793a\u4e00\u500b\u5177\u9ad4\u7684\u65e5\u671f\u548c\u6642\u9593\uff0c\u683c\u5f0f\u70ba\u300cYYYY-MM-DD HH:MM:SS\u300d\u3002\u5176\u4e3b\u8981\u7279\u9ede\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><strong>\u7bc4\u570d\uff1a<\/strong>\u53ef\u4ee5\u8868\u793a\u7684\u7bc4\u570d\u662f\u5f9e\u300c1000-01-01 00:00:00\u300d\u5230\u300c9999-12-31 23:59:59\u300d\u3002<\/li>\n<li><strong>\u5b58\u5132\u5927\u5c0f\uff1a<\/strong>\u4f54\u75288\u500b\u5b57\u7bc0\u7684\u5b58\u5132\u7a7a\u9593\u3002<\/li>\n<li><strong>\u6642\u5340\u7121\u95dc\uff1a<\/strong>\u4e0d\u53d7\u6642\u5340\u5f71\u97ff\uff0c\u7121\u8ad6\u4f3a\u670d\u5668\u7684\u6642\u5340\u8a2d\u7f6e\u5982\u4f55\uff0c<code>DATETIME<\/code>\u90fd\u6703\u4fdd\u6301\u5176\u539f\u59cb\u503c\u3002<\/li>\n<\/ul>\n<h2 id=\"timestamp%e7%9a%84%e7%89%b9%e9%bb%9e-NKWSqPreUf\">TIMESTAMP\u7684\u7279\u9ede<\/h2>\n<p><code>TIMESTAMP<\/code>\u985e\u578b\u540c\u6a23\u7528\u65bc\u8868\u793a\u65e5\u671f\u548c\u6642\u9593\uff0c\u4f46\u5176\u7279\u9ede\u6709\u6240\u4e0d\u540c\uff1a<\/p>\n<ul>\n<li><strong>\u7bc4\u570d\uff1a<\/strong>\u53ef\u4ee5\u8868\u793a\u7684\u7bc4\u570d\u662f\u5f9e\u300c1970-01-01 00:00:01 UTC\u300d\u5230\u300c2038-01-19 03:14:07 UTC\u300d\u3002<\/li>\n<li><strong>\u5b58\u5132\u5927\u5c0f\uff1a<\/strong>\u4f54\u75284\u500b\u5b57\u7bc0\u7684\u5b58\u5132\u7a7a\u9593\u3002<\/li>\n<li><strong>\u6642\u5340\u76f8\u95dc\uff1a<\/strong>\u6703\u6839\u64da\u4f3a\u670d\u5668\u7684\u6642\u5340\u81ea\u52d5\u8f49\u63db\uff0c\u9019\u610f\u5473\u8457\u7576\u4f60\u63d2\u5165\u4e00\u500b<code>TIMESTAMP<\/code>\u503c\u6642\uff0cMySQL\u6703\u5c07\u5176\u8f49\u63db\u70baUTC\u6642\u9593\u5b58\u5132\uff0c\u4e26\u5728\u67e5\u8a62\u6642\u6839\u64da\u7576\u524d\u6642\u5340\u8f49\u63db\u56de\u4f86\u3002<\/li>\n<\/ul>\n<h2 id=\"datetime%e8%88%87timestamp%e7%9a%84%e6%af%94%e8%bc%83-NKWSqPreUf\">DATETIME\u8207TIMESTAMP\u7684\u6bd4\u8f03<\/h2>\n<p>\u5728\u9078\u64c7<code>DATETIME<\/code>\u6216<code>TIMESTAMP<\/code>\u6642\uff0c\u958b\u767c\u8005\u9700\u8981\u8003\u616e\u4ee5\u4e0b\u5e7e\u500b\u65b9\u9762\uff1a<\/p>\n<h3 id=\"1-%e6%99%82%e9%96%93%e7%af%84%e5%9c%8d-NKWSqPreUf\">1. 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\u5b58\u5132\u7a7a\u9593<\/h3>\n<p>\u5728\u5b58\u5132\u7a7a\u9593\u65b9\u9762\uff0c<code>TIMESTAMP<\/code>\u4f54\u7528\u7684\u7a7a\u9593\u8f03\u5c0f\uff0c\u9019\u5728\u8655\u7406\u5927\u91cf\u6578\u64da\u6642\u53ef\u80fd\u6703\u6709\u6240\u5e6b\u52a9\u3002<\/p>\n<h3 id=\"4-%e6%80%a7%e8%83%bd-NKWSqPreUf\">4. \u6027\u80fd<\/h3>\n<p>\u5728\u6027\u80fd\u65b9\u9762\uff0c<code>TIMESTAMP<\/code>\u56e0\u70ba\u4f54\u7528\u7684\u7a7a\u9593\u8f03\u5c0f\uff0c\u53ef\u80fd\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\u63d0\u4f9b\u66f4\u597d\u7684\u6027\u80fd\uff0c\u4f46\u5177\u9ad4\u60c5\u6cc1\u9084\u9700\u6839\u64da\u5be6\u969b\u61c9\u7528\u9032\u884c\u6e2c\u8a66\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a8%e7%af%84%e4%be%8b-NKWSqPreUf\">\u4f7f\u7528\u7bc4\u4f8b<\/h2>\n<p>\u4ee5\u4e0b\u662f\u5982\u4f55\u5728MySQL\u4e2d\u4f7f\u7528\u9019\u5169\u7a2e\u6578\u64da\u985e\u578b\u7684\u7bc4\u4f8b\uff1a<\/p>\n<pre><code>CREATE TABLE events (\n    id INT AUTO_INCREMENT PRIMARY KEY,\n    event_name VARCHAR(255) NOT NULL,\n    event_date DATETIME,\n    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP\n);\n<\/code><\/pre>\n<p>\u5728\u9019\u500b\u7bc4\u4f8b\u4e2d\uff0c<code>event_date<\/code>\u4f7f\u7528<code>DATETIME<\/code>\u4f86\u5b58\u5132\u4e8b\u4ef6\u7684\u5177\u9ad4\u65e5\u671f\u548c\u6642\u9593\uff0c\u800c<code>created_at<\/code>\u4f7f\u7528<code>TIMESTAMP<\/code>\u4f86\u81ea\u52d5\u8a18\u9304\u5275\u5efa\u6642\u9593\u3002<\/p>\n<h2 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