{"id":153731,"date":"2024-11-02T09:53:18","date_gmt":"2024-11-02T01:53:18","guid":{"rendered":"https:\/\/server.hk\/cnblog\/153731\/"},"modified":"2024-11-02T09:53:19","modified_gmt":"2024-11-02T01:53:19","slug":"%e5%b8%b6%e6%82%a8%e4%ba%86%e8%a7%a3mysql%e4%b8%adtimestamp%e9%a1%9e%e5%9e%8b","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/153731\/","title":{"rendered":"\u5e36\u60a8\u4e86\u89e3MYSQL\u4e2dTIMESTAMP\u985e\u578b"},"content":{"rendered":"<h1 id=\"%e5%b8%b6%e6%82%a8%e4%ba%86%e8%a7%a3mysql%e4%b8%adtimestamp%e9%a1%9e%e5%9e%8b-YvxDUwNowg\">\u5e36\u60a8\u4e86\u89e3MYSQL\u4e2dTIMESTAMP\u985e\u578b<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\u4e2d\uff0c\u6642\u9593\u6233\uff08TIMESTAMP\uff09\u662f\u4e00\u500b\u975e\u5e38\u91cd\u8981\u7684\u6578\u64da\u985e\u578b\uff0c\u7279\u5225\u662f\u5728MYSQL\u4e2d\u3002TIMESTAMP\u985e\u578b\u7528\u65bc\u8a18\u9304\u4e8b\u4ef6\u767c\u751f\u7684\u5177\u9ad4\u6642\u9593\uff0c\u4e26\u4e14\u5728\u8a31\u591a\u61c9\u7528\u4e2d\u90fd\u626e\u6f14\u8457\u95dc\u9375\u89d2\u8272\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0eMYSQL\u4e2d\u7684TIMESTAMP\u985e\u578b\uff0c\u5305\u62ec\u5176\u7279\u6027\u3001\u4f7f\u7528\u65b9\u6cd5\u4ee5\u53ca\u8207\u5176\u4ed6\u6642\u9593\u985e\u578b\u7684\u6bd4\u8f03\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%aftimestamp%e9%a1%9e%e5%9e%8b%ef%bc%9f-YvxDUwNowg\">\u4ec0\u9ebc\u662fTIMESTAMP\u985e\u578b\uff1f<\/h2>\n<p>\u5728MYSQL\u4e2d\uff0cTIMESTAMP\u662f\u4e00\u7a2e\u7528\u65bc\u5b58\u5132\u65e5\u671f\u548c\u6642\u9593\u7684\u6578\u64da\u985e\u578b\u3002\u5b83\u7684\u7bc4\u570d\u5f9e1970\u5e741\u67081\u65e500:00:01 UTC\u52302038\u5e741\u670819\u65e503:14:07 UTC\u3002TIMESTAMP\u985e\u578b\u7684\u4e3b\u8981\u7279\u9ede\u662f\u5b83\u6703\u6839\u64da\u7cfb\u7d71\u7684\u6642\u5340\u81ea\u52d5\u8f49\u63db\u6642\u9593\uff0c\u9019\u4f7f\u5f97\u5b83\u5728\u8655\u7406\u8de8\u6642\u5340\u7684\u61c9\u7528\u6642\u975e\u5e38\u6709\u7528\u3002<\/p>\n<h2 id=\"timestamp%e7%9a%84%e7%89%b9%e6%80%a7-YvxDUwNowg\">TIMESTAMP\u7684\u7279\u6027<\/h2>\n<ul>\n<li><strong>\u81ea\u52d5\u66f4\u65b0\uff1a<\/strong>\u7576\u4e00\u884c\u6578\u64da\u88ab\u63d2\u5165\u6216\u66f4\u65b0\u6642\uff0cTIMESTAMP\u5b57\u6bb5\u53ef\u4ee5\u81ea\u52d5\u8a2d\u7f6e\u70ba\u7576\u524d\u6642\u9593\u3002\u9019\u5c0d\u65bc\u8a18\u9304\u6578\u64da\u7684\u5275\u5efa\u548c\u4fee\u6539\u6642\u9593\u975e\u5e38\u65b9\u4fbf\u3002<\/li>\n<li><strong>\u6642\u5340\u652f\u6301\uff1a<\/strong>TIMESTAMP\u6703\u6839\u64da\u4f3a\u670d\u5668\u7684\u6642\u5340\u9032\u884c\u8f49\u63db\uff0c\u9019\u610f\u5473\u8457\u7121\u8ad6\u7528\u6236\u5728\u54ea\u500b\u6642\u5340\u8a2a\u554f\u6578\u64da\uff0c\u986f\u793a\u7684\u6642\u9593\u90fd\u662f\u4e00\u81f4\u7684\u3002<\/li>\n<li><strong>\u5b58\u5132\u7a7a\u9593\uff1a<\/strong>TIMESTAMP\u985e\u578b\u4f54\u75284\u500b\u5b57\u7bc0\u7684\u5b58\u5132\u7a7a\u9593\uff0c\u76f8\u5c0d\u65bc\u5176\u4ed6\u6642\u9593\u985e\u578b\u4f86\u8aaa\uff0c\u9019\u662f\u4e00\u500b\u8f03\u5c0f\u7684\u6578\u64da\u91cf\u3002<\/li>\n<\/ul>\n<h2 id=\"timestamp%e7%9a%84%e4%bd%bf%e7%94%a8%e6%96%b9%e6%b3%95-YvxDUwNowg\">TIMESTAMP\u7684\u4f7f\u7528\u65b9\u6cd5<\/h2>\n<p>\u5728MYSQL\u4e2d\u5275\u5efa\u4e00\u500bTIMESTAMP\u5b57\u6bb5\u975e\u5e38\u7c21\u55ae\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u793a\u4f8b\uff0c\u5c55\u793a\u5982\u4f55\u5728\u5275\u5efa\u8868\u6642\u4f7f\u7528TIMESTAMP\u985e\u578b\uff1a<\/p>\n<pre><code>CREATE TABLE example (\n    id INT AUTO_INCREMENT PRIMARY KEY,\n    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,\n    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP\n);<\/code><\/pre>\n<p>\u5728\u9019\u500b\u793a\u4f8b\u4e2d\uff0c<code>created_at<\/code>\u5b57\u6bb5\u6703\u5728\u63d2\u5165\u6578\u64da\u6642\u81ea\u52d5\u8a2d\u7f6e\u70ba\u7576\u524d\u6642\u9593\uff0c\u800c<code>updated_at<\/code>\u5b57\u6bb5\u5247\u6703\u5728\u6bcf\u6b21\u66f4\u65b0\u8a72\u884c\u6642\u81ea\u52d5\u66f4\u65b0\u70ba\u7576\u524d\u6642\u9593\u3002<\/p>\n<h2 id=\"timestamp%e8%88%87%e5%85%b6%e4%bb%96%e6%99%82%e9%96%93%e9%a1%9e%e5%9e%8b%e7%9a%84%e6%af%94%e8%bc%83-YvxDUwNowg\">TIMESTAMP\u8207\u5176\u4ed6\u6642\u9593\u985e\u578b\u7684\u6bd4\u8f03<\/h2>\n<p>MYSQL\u4e2d\u9084\u6709\u5176\u4ed6\u5e7e\u7a2e\u6642\u9593\u985e\u578b\uff0c\u5982DATETIME\u548cDATE\u3002\u4ee5\u4e0b\u662fTIMESTAMP\u8207\u9019\u4e9b\u985e\u578b\u7684\u4e3b\u8981\u5340\u5225\uff1a<\/p>\n<ul>\n<li><strong>TIMESTAMP vs DATETIME\uff1a<\/strong>TIMESTAMP\u6703\u6839\u64da\u7cfb\u7d71\u6642\u5340\u81ea\u52d5\u8f49\u63db\uff0c\u800cDATETIME\u5247\u4e0d\u6703\u3002DATETIME\u7684\u7bc4\u570d\u66f4\u5ee3\uff0c\u5f9e\u516c\u5143\u524d4714\u5e74\u5230\u516c\u51439999\u5e74\uff0c\u4f46\u5b83\u4e0d\u6703\u81ea\u52d5\u66f4\u65b0\u3002<\/li>\n<li><strong>TIMESTAMP vs DATE\uff1a<\/strong>DATE\u53ea\u5b58\u5132\u65e5\u671f\uff08\u5e74\u3001\u6708\u3001\u65e5\uff09\uff0c\u800c\u4e0d\u5305\u542b\u6642\u9593\u3002TIMESTAMP\u5247\u540c\u6642\u5305\u542b\u65e5\u671f\u548c\u6642\u9593\u4fe1\u606f\u3002<\/li>\n<\/ul>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-YvxDUwNowg\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<p>\u5728\u4f7f\u7528TIMESTAMP\u6642\uff0c\u6709\u5e7e\u9ede\u9700\u8981\u6ce8\u610f\uff1a<\/p>\n<ul>\n<li>TIMESTAMP\u7684\u7bc4\u570d\u6709\u9650\uff0c\u5c0d\u65bc\u9700\u8981\u5b58\u5132\u66f4\u9577\u6642\u9593\u7bc4\u570d\u7684\u61c9\u7528\uff0c\u61c9\u8003\u616e\u4f7f\u7528DATETIME\u3002<\/li>\n<li>\u5728\u591a\u7528\u6236\u74b0\u5883\u4e2d\uff0c\u6642\u5340\u7684\u8a2d\u7f6e\u53ef\u80fd\u6703\u5f71\u97ffTIMESTAMP\u7684\u986f\u793a\uff0c\u56e0\u6b64\u9700\u8981\u78ba\u4fdd\u4f3a\u670d\u5668\u548c\u61c9\u7528\u7684\u6642\u5340\u8a2d\u7f6e\u4e00\u81f4\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-YvxDUwNowg\">\u7e3d\u7d50<\/h2>\n<p>TIMESTAMP\u985e\u578b\u5728MYSQL\u4e2d\u662f\u4e00\u500b\u5f37\u5927\u4e14\u9748\u6d3b\u7684\u5de5\u5177\uff0c\u9069\u5408\u7528\u65bc\u9700\u8981\u8a18\u9304\u6642\u9593\u7684\u5404\u7a2e\u61c9\u7528\u3002\u7121\u8ad6\u662f\u7528\u65bc\u6578\u64da\u5275\u5efa\u6642\u9593\u7684\u8a18\u9304\uff0c\u9084\u662f\u7528\u65bc\u8ffd\u8e64\u6578\u64da\u7684\u66f4\u65b0\uff0cTIMESTAMP\u90fd\u80fd\u63d0\u4f9b\u7cbe\u78ba\u7684\u6642\u9593\u4fe1\u606f\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u7ba1\u7406\u6642\u9593\u6578\u64da\u7684\u958b\u767c\u8005\u4f86\u8aaa\uff0c\u4e86\u89e3TIMESTAMP\u7684\u7279\u6027\u548c\u4f7f\u7528\u65b9\u6cd5\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u9069\u5408\u5404\u7a2e\u9700\u6c42\u3002\u7121\u8ad6\u662f <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u9084\u662f\u5176\u4ed6 <a href=\"https:\/\/server.hk\">\u4f3a\u670d\u5668<\/a> \u670d\u52d9\uff0c\u6211\u5011\u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3MySQL\u4e2dTIMESTAMP\u985e\u578b\u7684\u7279\u6027\u3001\u7528\u9014\u53ca\u5176\u5728\u6578\u64da\u5eab\u4e2d\u7684\u91cd\u8981\u6027\uff0c\u52a9\u60a8\u66f4\u6709\u6548\u5730\u7ba1\u7406\u6642\u9593\u6578\u64da\u3002<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-153731","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/153731","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=153731"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/153731\/revisions"}],"predecessor-version":[{"id":153732,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/153731\/revisions\/153732"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=153731"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=153731"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=153731"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}