{"id":79988,"date":"2024-10-16T13:47:17","date_gmt":"2024-10-16T05:47:17","guid":{"rendered":"https:\/\/server.hk\/cnblog\/79988\/"},"modified":"2024-10-16T13:47:17","modified_gmt":"2024-10-16T05:47:17","slug":"mysql%e6%8c%87%e4%bb%a4-timestamp%ef%bc%88%e6%99%82%e9%96%93%e6%88%b3%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/79988\/","title":{"rendered":"MySQL\u6307\u4ee4: TIMESTAMP\uff08\u6642\u9593\u6233\uff09"},"content":{"rendered":"<h1 id=\"mysql%e6%8c%87%e4%bb%a4-timestamp%ef%bc%88%e6%99%82%e9%96%93%e6%88%b3%ef%bc%89-iMPOMQewpC\">MySQL\u6307\u4ee4: TIMESTAMP\uff08\u6642\u9593\u6233\uff09<\/h1>\n<p>\u5728\u8cc7\u6599\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\u3002\u5b83\u7528\u65bc\u8a18\u9304\u67d0\u4e00\u4e8b\u4ef6\u767c\u751f\u7684\u5177\u9ad4\u6642\u9593\uff0c\u4e26\u4e14\u53ef\u4ee5\u81ea\u52d5\u66f4\u65b0\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0eMySQL\u4e2d\u7684TIMESTAMP\u6307\u4ee4\uff0c\u5305\u62ec\u5176\u7279\u6027\u3001\u7528\u6cd5\u53ca\u5be6\u969b\u61c9\u7528\u7bc4\u4f8b\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%aftimestamp%ef%bc%9f-iMPOMQewpC\">\u4ec0\u9ebc\u662fTIMESTAMP\uff1f<\/h2>\n<p>TIMESTAMP\u662f\u4e00\u7a2e\u65e5\u671f\u548c\u6642\u9593\u7684\u6578\u64da\u985e\u578b\uff0c\u80fd\u5920\u5b58\u5132\u5f9e1970\u5e741\u67081\u65e500:00:01 UTC\u52302038\u5e741\u670819\u65e503:14:07 UTC\u4e4b\u9593\u7684\u6642\u9593\u3002\u5b83\u7684\u4e3b\u8981\u7279\u9ede\u662f\u80fd\u5920\u81ea\u52d5\u8a18\u9304\u548c\u66f4\u65b0\u6642\u9593\uff0c\u9019\u4f7f\u5f97\u5b83\u5728\u8a31\u591a\u61c9\u7528\u5834\u666f\u4e2d\u975e\u5e38\u6709\u7528\u3002<\/p>\n<h2 id=\"timestamp%e7%9a%84%e7%89%b9%e6%80%a7-iMPOMQewpC\">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<\/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\u4f7f\u5f97\u5b83\u5728\u8de8\u6642\u5340\u7684\u61c9\u7528\u4e2d\u975e\u5e38\u65b9\u4fbf\u3002<\/li>\n<li><strong>\u5b58\u5132\u7a7a\u9593\uff1a<\/strong>TIMESTAMP\u4f54\u75284\u500b\u5b57\u7bc0\u7684\u5b58\u5132\u7a7a\u9593\uff0c\u76f8\u5c0d\u65bc\u5176\u4ed6\u65e5\u671f\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%e5%9f%ba%e6%9c%ac%e7%94%a8%e6%b3%95-iMPOMQewpC\">TIMESTAMP\u7684\u57fa\u672c\u7528\u6cd5<\/h2>\n<p>\u5728MySQL\u4e2d\uff0c\u4f7f\u7528TIMESTAMP\u7684\u57fa\u672c\u8a9e\u6cd5\u5982\u4e0b\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\u4f8b\u5b50\u4e2d\uff0c\u6211\u5011\u5275\u5efa\u4e86\u4e00\u500b\u540d\u70baexample\u7684\u8868\uff0c\u5305\u542b\u4e09\u500b\u5b57\u6bb5\uff1aid\u3001created_at\u548cupdated_at\u3002created_at\u5b57\u6bb5\u5728\u63d2\u5165\u6642\u81ea\u52d5\u8a2d\u7f6e\u70ba\u7576\u524d\u6642\u9593\uff0c\u800cupdated_at\u5b57\u6bb5\u5728\u6bcf\u6b21\u66f4\u65b0\u6642\u81ea\u52d5\u66f4\u65b0\u70ba\u7576\u524d\u6642\u9593\u3002<\/p>\n<h2 id=\"%e5%a6%82%e4%bd%95%e6%9f%a5%e8%a9%a2timestamp%e6%95%b8%e6%93%9a-iMPOMQewpC\">\u5982\u4f55\u67e5\u8a62TIMESTAMP\u6578\u64da<\/h2>\n<p>\u67e5\u8a62TIMESTAMP\u6578\u64da\u6642\uff0c\u53ef\u4ee5\u4f7f\u7528\u6a19\u6e96\u7684SELECT\u8a9e\u53e5\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>SELECT * FROM example WHERE created_at &gt; '2023-01-01 00:00:00';<\/code><\/pre>\n<p>\u9019\u689d\u67e5\u8a62\u5c07\u8fd4\u56de\u6240\u6709\u57282023\u5e741\u67081\u65e5\u4e4b\u5f8c\u5275\u5efa\u7684\u8a18\u9304\u3002<\/p>\n<h2 id=\"timestamp%e7%9a%84%e6%87%89%e7%94%a8%e5%a0%b4%e6%99%af-iMPOMQewpC\">TIMESTAMP\u7684\u61c9\u7528\u5834\u666f<\/h2>\n<p>TIMESTAMP\u5728\u8a31\u591a\u61c9\u7528\u4e2d\u90fd\u975e\u5e38\u6709\u7528\uff0c\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u898b\u7684\u5834\u666f\uff1a<\/p>\n<ul>\n<li><strong>\u65e5\u8a8c\u8a18\u9304\uff1a<\/strong>\u5728\u61c9\u7528\u7a0b\u5e8f\u4e2d\u8a18\u9304\u4e8b\u4ef6\u7684\u767c\u751f\u6642\u9593\uff0c\u4f8b\u5982\u7528\u6236\u767b\u9304\u3001\u6578\u64da\u66f4\u65b0\u7b49\u3002<\/li>\n<li><strong>\u7248\u672c\u63a7\u5236\uff1a<\/strong>\u5728\u6578\u64da\u5eab\u4e2d\u8ddf\u8e2a\u6578\u64da\u7684\u8b8a\u66f4\u6b77\u53f2\uff0c\u4fbf\u65bc\u56de\u6eaf\u548c\u5be9\u8a08\u3002<\/li>\n<li><strong>\u5b9a\u6642\u4efb\u52d9\uff1a<\/strong>\u6839\u64da\u6642\u9593\u6233\u4f86\u57f7\u884c\u5b9a\u6642\u4efb\u52d9\uff0c\u4f8b\u5982\u5b9a\u671f\u5099\u4efd\u6216\u6578\u64da\u6e05\u7406\u3002<\/li>\n<\/ul>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-iMPOMQewpC\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<p>\u96d6\u7136TIMESTAMP\u975e\u5e38\u6709\u7528\uff0c\u4f46\u5728\u4f7f\u7528\u6642\u4e5f\u9700\u8981\u6ce8\u610f\u4ee5\u4e0b\u5e7e\u9ede\uff1a<\/p>\n<ul>\n<li>TIMESTAMP\u7684\u7bc4\u570d\u6709\u9650\uff0c\u7121\u6cd5\u5b58\u51322038\u5e74\u4ee5\u5f8c\u7684\u6642\u9593\u3002<\/li>\n<li>\u5728\u4e0d\u540c\u7684\u6642\u5340\u4e0b\uff0cTIMESTAMP\u7684\u503c\u53ef\u80fd\u6703\u6709\u6240\u4e0d\u540c\uff0c\u56e0\u6b64\u5728\u8a2d\u8a08\u7cfb\u7d71\u6642\u9700\u8981\u8003\u616e\u6642\u5340\u7684\u5f71\u97ff\u3002<\/li>\n<li>\u5982\u679c\u9700\u8981\u5b58\u5132\u66f4\u9577\u6642\u9593\u7bc4\u570d\u7684\u65e5\u671f\uff0c\u53ef\u4ee5\u8003\u616e\u4f7f\u7528DATETIME\u985e\u578b\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-iMPOMQewpC\">\u7e3d\u7d50<\/h2>\n<p>TIMESTAMP\u5728MySQL\u4e2d\u662f\u4e00\u500b\u5f37\u5927\u7684\u5de5\u5177\uff0c\u80fd\u5920\u5e6b\u52a9\u958b\u767c\u8005\u6709\u6548\u5730\u7ba1\u7406\u548c\u8a18\u9304\u6642\u9593\u4fe1\u606f\u3002\u7121\u8ad6\u662f\u5728\u65e5\u8a8c\u8a18\u9304\u3001\u7248\u672c\u63a7\u5236\u9084\u662f\u5b9a\u6642\u4efb\u52d9\u4e2d\uff0cTIMESTAMP\u90fd\u80fd\u767c\u63ee\u91cd\u8981\u4f5c\u7528\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u7ba1\u7406\u6642\u9593\u6578\u64da\u7684\u61c9\u7528\u4f86\u8aaa\uff0c\u4e86\u89e3\u548c\u638c\u63e1TIMESTAMP\u7684\u4f7f\u7528\u662f\u975e\u5e38\u5fc5\u8981\u7684\u3002<\/p>\n<p>\u5982\u679c\u60a8\u5c0d\u65bcVPS\u3001<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u6216\u5176\u4ed6\u4f3a\u670d\u5668\u89e3\u6c7a\u65b9\u6848\u6709\u8208\u8da3\uff0c\u6b61\u8fce\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u4ee5\u7372\u53d6\u66f4\u591a\u8cc7\u8a0a\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3MySQL\u4e2d\u7684TIMESTAMP\u6307\u4ee4\uff0c\u638c\u63e1\u5982\u4f55\u5904\u7406\u65e5\u671f\u548c\u65f6\u95f4\u6570\u636e\uff0c\u63d0\u5347\u6570\u636e\u5e93\u7ba1\u7406\u6548\u7387\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-79988","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/79988","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=79988"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/79988\/revisions"}],"predecessor-version":[{"id":79989,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/79988\/revisions\/79989"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=79988"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=79988"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=79988"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}