{"id":79326,"date":"2024-10-16T12:54:17","date_gmt":"2024-10-16T04:54:17","guid":{"rendered":"https:\/\/server.hk\/cnblog\/79326\/"},"modified":"2024-10-16T12:54:17","modified_gmt":"2024-10-16T04:54:17","slug":"mysql%e6%8c%87%e4%bb%a4-now%ef%bc%88%e7%95%b6%e5%89%8d%e6%97%a5%e6%9c%9f%e6%99%82%e9%96%93%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/79326\/","title":{"rendered":"MySQL\u6307\u4ee4: NOW()\uff08\u7576\u524d\u65e5\u671f\u6642\u9593\uff09"},"content":{"rendered":"<h1 id=\"mysql%e6%8c%87%e4%bb%a4-now%ef%bc%88%e7%95%b6%e5%89%8d%e6%97%a5%e6%9c%9f%e6%99%82%e9%96%93%ef%bc%89-QLSISgECqI\">MySQL\u6307\u4ee4: NOW()\uff08\u7576\u524d\u65e5\u671f\u6642\u9593\uff09<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\uff0c\u6642\u9593\u548c\u65e5\u671f\u7684\u8655\u7406\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002MySQL\u4f5c\u70ba\u4e00\u500b\u6d41\u884c\u7684\u958b\u6e90\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff0c\u63d0\u4f9b\u4e86\u591a\u7a2e\u51fd\u6578\u4f86\u8655\u7406\u65e5\u671f\u548c\u6642\u9593\u3002\u5176\u4e2d\uff0c<code>NOW()<\/code>\u51fd\u6578\u662f\u6700\u5e38\u7528\u7684\u4e4b\u4e00\uff0c\u5b83\u7528\u65bc\u7372\u53d6\u7576\u524d\u7684\u65e5\u671f\u548c\u6642\u9593\u3002<\/p>\n<h2 id=\"now%e5%87%bd%e6%95%b8%e7%9a%84%e5%9f%ba%e6%9c%ac%e7%94%a8%e6%b3%95-QLSISgECqI\">NOW()\u51fd\u6578\u7684\u57fa\u672c\u7528\u6cd5<\/h2>\n<p><code>NOW()<\/code>\u51fd\u6578\u7684\u8a9e\u6cd5\u975e\u5e38\u7c21\u55ae\uff0c\u4f7f\u7528\u6642\u53ea\u9700\u5728\u67e5\u8a62\u4e2d\u8abf\u7528\u5b83\u5373\u53ef\u3002\u9019\u500b\u51fd\u6578\u4e0d\u9700\u8981\u4efb\u4f55\u53c3\u6578\uff0c\u8fd4\u56de\u7684\u7d50\u679c\u662f\u7576\u524d\u7684\u65e5\u671f\u548c\u6642\u9593\uff0c\u683c\u5f0f\u70ba&#8217;YYYY-MM-DD HH:MM:SS&#8217;\u3002<\/p>\n<pre><code>SELECT NOW();<\/code><\/pre>\n<p>\u57f7\u884c\u4e0a\u8ff0\u67e5\u8a62\u5f8c\uff0c\u60a8\u5c07\u7372\u5f97\u985e\u4f3c\u65bc\u4ee5\u4e0b\u7684\u7d50\u679c\uff1a<\/p>\n<pre><code>2023-10-01 14:30:45<\/code><\/pre>\n<h2 id=\"now%e5%87%bd%e6%95%b8%e7%9a%84%e6%87%89%e7%94%a8%e5%a0%b4%e6%99%af-QLSISgECqI\">NOW()\u51fd\u6578\u7684\u61c9\u7528\u5834\u666f<\/h2>\n<p>\u5728\u5be6\u969b\u61c9\u7528\u4e2d\uff0c<code>NOW()<\/code>\u51fd\u6578\u53ef\u4ee5\u7528\u65bc\u591a\u7a2e\u5834\u666f\uff0c\u4f8b\u5982\uff1a<\/p>\n<ul>\n<li><strong>\u8a18\u9304\u5275\u5efa\u6642\u9593\uff1a<\/strong>\u5728\u63d2\u5165\u65b0\u8a18\u9304\u6642\uff0c\u53ef\u4ee5\u4f7f\u7528<code>NOW()<\/code>\u4f86\u81ea\u52d5\u586b\u5145\u5275\u5efa\u6642\u9593\u3002<\/li>\n<li><strong>\u67e5\u8a62\u6700\u8fd1\u7684\u6578\u64da\uff1a<\/strong>\u53ef\u4ee5\u6839\u64da\u7576\u524d\u6642\u9593\u4f86\u67e5\u8a62\u6700\u8fd1\u7684\u6578\u64da\uff0c\u4f8b\u5982\u67e5\u8a62\u904e\u53bb\u4e00\u5c0f\u6642\u5167\u7684\u8a18\u9304\u3002<\/li>\n<li><strong>\u8a08\u7b97\u6642\u9593\u5dee\uff1a<\/strong>\u53ef\u4ee5\u4f7f\u7528<code>NOW()<\/code>\u4f86\u8a08\u7b97\u67d0\u500b\u4e8b\u4ef6\u767c\u751f\u7684\u6642\u9593\u5dee\u3002<\/li>\n<\/ul>\n<h3 id=\"%e8%a8%98%e9%8c%84%e5%89%b5%e5%bb%ba%e6%99%82%e9%96%93%e7%9a%84%e7%a4%ba%e4%be%8b-QLSISgECqI\">\u8a18\u9304\u5275\u5efa\u6642\u9593\u7684\u793a\u4f8b<\/h3>\n<p>\u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u7528\u6236\u8868\uff0c\u7576\u7528\u6236\u8a3b\u518a\u6642\uff0c\u6211\u5011\u5e0c\u671b\u8a18\u9304\u4ed6\u5011\u7684\u8a3b\u518a\u6642\u9593\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0bSQL\u8a9e\u53e5\uff1a<\/p>\n<pre><code>INSERT INTO users (username, created_at) VALUES ('john_doe', NOW());<\/code><\/pre>\n<p>\u9019\u6a23\uff0c<code>created_at<\/code>\u6b04\u4f4d\u5c07\u81ea\u52d5\u586b\u5145\u7576\u524d\u7684\u65e5\u671f\u548c\u6642\u9593\u3002<\/p>\n<h3 id=\"%e6%9f%a5%e8%a9%a2%e6%9c%80%e8%bf%91%e7%9a%84%e6%95%b8%e6%93%9a-QLSISgECqI\">\u67e5\u8a62\u6700\u8fd1\u7684\u6578\u64da<\/h3>\n<p>\u5982\u679c\u6211\u5011\u60f3\u67e5\u8a62\u904e\u53bb\u4e00\u5929\u5167\u8a3b\u518a\u7684\u7528\u6236\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u67e5\u8a62\uff1a<\/p>\n<pre><code>SELECT * FROM users WHERE created_at &gt; NOW() - INTERVAL 1 DAY;<\/code><\/pre>\n<p>\u9019\u689d\u67e5\u8a62\u5c07\u8fd4\u56de\u6240\u6709\u5728\u904e\u53bb24\u5c0f\u6642\u5167\u8a3b\u518a\u7684\u7528\u6236\u3002<\/p>\n<h2 id=\"now%e5%87%bd%e6%95%b8%e7%9a%84%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-QLSISgECqI\">NOW()\u51fd\u6578\u7684\u6ce8\u610f\u4e8b\u9805<\/h2>\n<p>\u96d6\u7136<code>NOW()<\/code>\u51fd\u6578\u975e\u5e38\u65b9\u4fbf\uff0c\u4f46\u5728\u4f7f\u7528\u6642\u4e5f\u9700\u8981\u6ce8\u610f\u4ee5\u4e0b\u5e7e\u9ede\uff1a<\/p>\n<ul>\n<li><strong>\u6642\u5340\u554f\u984c\uff1a<\/strong>\u78ba\u4fdd\u6578\u64da\u5eab\u7684\u6642\u5340\u8a2d\u7f6e\u6b63\u78ba\uff0c\u5426\u5247\u8fd4\u56de\u7684\u6642\u9593\u53ef\u80fd\u8207\u9810\u671f\u4e0d\u7b26\u3002<\/li>\n<li><strong>\u6027\u80fd\u8003\u91cf\uff1a<\/strong>\u5728\u9ad8\u983b\u7387\u7684\u67e5\u8a62\u4e2d\uff0c\u904e\u591a\u4f7f\u7528<code>NOW()<\/code>\u53ef\u80fd\u6703\u5f71\u97ff\u6027\u80fd\uff0c\u7279\u5225\u662f\u5728\u5927\u6578\u64da\u91cf\u7684\u60c5\u6cc1\u4e0b\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-QLSISgECqI\">\u7e3d\u7d50<\/h2>\n<p>MySQL\u7684<code>NOW()<\/code>\u51fd\u6578\u662f\u4e00\u500b\u5f37\u5927\u7684\u5de5\u5177\uff0c\u80fd\u5920\u5e6b\u52a9\u958b\u767c\u8005\u8f15\u9b06\u7372\u53d6\u7576\u524d\u7684\u65e5\u671f\u548c\u6642\u9593\u3002\u7121\u8ad6\u662f\u5728\u8a18\u9304\u5275\u5efa\u6642\u9593\u3001\u67e5\u8a62\u6700\u8fd1\u7684\u6578\u64da\uff0c\u9084\u662f\u8a08\u7b97\u6642\u9593\u5dee\uff0c<code>NOW()<\/code>\u90fd\u80fd\u63d0\u4f9b\u4fbf\u5229\u3002\u7136\u800c\uff0c\u5728\u4f7f\u7528\u6642\u4e5f\u9700\u6ce8\u610f\u6642\u5340\u548c\u6027\u80fd\u7b49\u554f\u984c\u3002\u5c0d\u65bc\u9700\u8981\u7a69\u5b9a\u548c\u9ad8\u6548\u6578\u64da\u5eab\u89e3\u6c7a\u65b9\u6848\u7684\u7528\u6236\uff0c\u9078\u64c7\u5408\u9069\u7684<em><a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a><\/em>\u6216<em><a href=\"https:\/\/server.hk\">\u4e91\u670d\u52a1\u5668<\/a><\/em>\u53ef\u4ee5\u70ba\u60a8\u7684\u61c9\u7528\u63d0\u4f9b\u66f4\u597d\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3MySQL\u6307\u4ee4NOW()\uff0c\u7528\u65bc\u7372\u53d6\u7576\u524d\u65e5\u671f\u548c\u6642\u9593\uff0c\u7c21\u5316\u6578\u64da\u5eab\u64cd\u4f5c\uff0c\u63d0\u5347\u958b\u767c\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-79326","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/79326","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=79326"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/79326\/revisions"}],"predecessor-version":[{"id":79327,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/79326\/revisions\/79327"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=79326"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=79326"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=79326"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}