{"id":76010,"date":"2024-10-16T03:06:18","date_gmt":"2024-10-15T19:06:18","guid":{"rendered":"https:\/\/server.hk\/cnblog\/76010\/"},"modified":"2024-10-16T03:06:18","modified_gmt":"2024-10-15T19:06:18","slug":"mysql-%e7%8d%b2%e5%8f%96%e6%99%82%e9%96%93%e5%8f%8a%e6%97%a5%e6%9c%9f%e7%9a%84%e5%87%bd%e6%95%b8-sysdate","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/76010\/","title":{"rendered":"MySQL \u7372\u53d6\u6642\u9593\u53ca\u65e5\u671f\u7684\u51fd\u6578&#8211;sysdate()"},"content":{"rendered":"<h1 id=\"mysql-%e7%8d%b2%e5%8f%96%e6%99%82%e9%96%93%e5%8f%8a%e6%97%a5%e6%9c%9f%e7%9a%84%e5%87%bd%e6%95%b8-sysdate-NvtWRcSRFM\">MySQL \u7372\u53d6\u6642\u9593\u53ca\u65e5\u671f\u7684\u51fd\u6578&#8211;sysdate()<\/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\uff0c\u5c24\u5176\u662f\u5728\u9700\u8981\u8a18\u9304\u4e8b\u4ef6\u767c\u751f\u6642\u9593\u6216\u9032\u884c\u6642\u9593\u6233\u8a18\u7684\u60c5\u6cc1\u4e0b\u3002MySQL \u63d0\u4f9b\u4e86\u591a\u7a2e\u51fd\u6578\u4f86\u7372\u53d6\u7576\u524d\u7684\u6642\u9593\u548c\u65e5\u671f\uff0c\u5176\u4e2d <code>sysdate()<\/code> \u51fd\u6578\u662f\u4e00\u500b\u975e\u5e38\u5be6\u7528\u7684\u9078\u64c7\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af-sysdate-%e5%87%bd%e6%95%b8%ef%bc%9f-NvtWRcSRFM\">\u4ec0\u9ebc\u662f sysdate() \u51fd\u6578\uff1f<\/h2>\n<p><code>sysdate()<\/code> \u51fd\u6578\u7528\u65bc\u8fd4\u56de\u7576\u524d\u7684\u65e5\u671f\u548c\u6642\u9593\u3002\u8207\u5176\u4ed6\u6642\u9593\u51fd\u6578\uff08\u5982 <code>now()<\/code>\uff09\u4e0d\u540c\uff0c<code>sysdate()<\/code> \u8fd4\u56de\u7684\u662f\u57f7\u884c\u8a72\u51fd\u6578\u6642\u7684\u5be6\u969b\u6642\u9593\uff0c\u800c\u4e0d\u662f\u67e5\u8a62\u958b\u59cb\u6642\u7684\u6642\u9593\u3002\u9019\u4f7f\u5f97 <code>sysdate()<\/code> \u5728\u9700\u8981\u7cbe\u78ba\u8a18\u9304\u6642\u9593\u7684\u60c5\u6cc1\u4e0b\u7279\u5225\u6709\u7528\u3002<\/p>\n<h2 id=\"sysdate-%e7%9a%84%e8%aa%9e%e6%b3%95-NvtWRcSRFM\">sysdate() \u7684\u8a9e\u6cd5<\/h2>\n<pre><code>SYSDATE()<\/code><\/pre>\n<p>\u9019\u500b\u51fd\u6578\u4e0d\u9700\u8981\u4efb\u4f55\u53c3\u6578\uff0c\u76f4\u63a5\u8abf\u7528\u5373\u53ef\u7372\u5f97\u7576\u524d\u7684\u65e5\u671f\u548c\u6642\u9593\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a8%e7%af%84%e4%be%8b-NvtWRcSRFM\">\u4f7f\u7528\u7bc4\u4f8b<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u4e9b\u4f7f\u7528 <code>sysdate()<\/code> \u51fd\u6578\u7684\u7bc4\u4f8b\uff1a<\/p>\n<h3 id=\"%e7%af%84%e4%be%8b-1%ef%bc%9a%e7%8d%b2%e5%8f%96%e7%95%b6%e5%89%8d%e6%99%82%e9%96%93-NvtWRcSRFM\">\u7bc4\u4f8b 1\uff1a\u7372\u53d6\u7576\u524d\u6642\u9593<\/h3>\n<pre><code>SELECT SYSDATE();<\/code><\/pre>\n<p>\u9019\u689d\u67e5\u8a62\u5c07\u8fd4\u56de\u7576\u524d\u7684\u65e5\u671f\u548c\u6642\u9593\uff0c\u4f8b\u5982\uff1a<code>2023-10-01 14:30:00<\/code>\u3002<\/p>\n<h3 id=\"%e7%af%84%e4%be%8b-2%ef%bc%9a%e6%8f%92%e5%85%a5%e7%95%b6%e5%89%8d%e6%99%82%e9%96%93%e5%88%b0%e8%a1%a8%e4%b8%ad-NvtWRcSRFM\">\u7bc4\u4f8b 2\uff1a\u63d2\u5165\u7576\u524d\u6642\u9593\u5230\u8868\u4e2d<\/h3>\n<p>\u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u540d\u70ba <code>events<\/code> \u7684\u8868\uff0c\u7d50\u69cb\u5982\u4e0b\uff1a<\/p>\n<pre><code>CREATE TABLE events (\n    id INT AUTO_INCREMENT PRIMARY KEY,\n    event_name VARCHAR(255),\n    event_time DATETIME\n);<\/code><\/pre>\n<p>\u6211\u5011\u53ef\u4ee5\u4f7f\u7528 <code>sysdate()<\/code> \u5c07\u7576\u524d\u6642\u9593\u63d2\u5165\u5230\u8868\u4e2d\uff1a<\/p>\n<pre><code>INSERT INTO events (event_name, event_time) VALUES ('MySQL Workshop', SYSDATE());<\/code><\/pre>\n<h3 id=\"%e7%af%84%e4%be%8b-3%ef%bc%9a%e6%af%94%e8%bc%83%e6%99%82%e9%96%93-NvtWRcSRFM\">\u7bc4\u4f8b 3\uff1a\u6bd4\u8f03\u6642\u9593<\/h3>\n<p>\u6211\u5011\u4e5f\u53ef\u4ee5\u4f7f\u7528 <code>sysdate()<\/code> \u4f86\u6bd4\u8f03\u6642\u9593\u3002\u4f8b\u5982\uff0c\u67e5\u8a62\u6240\u6709\u5728\u7576\u524d\u6642\u9593\u4e4b\u524d\u7684\u4e8b\u4ef6\uff1a<\/p>\n<pre><code>SELECT * FROM events WHERE event_time &lt; SYSDATE();<\/code><\/pre>\n<h2 id=\"sysdate-%e7%9a%84%e6%87%89%e7%94%a8%e5%a0%b4%e6%99%af-NvtWRcSRFM\">sysdate() \u7684\u61c9\u7528\u5834\u666f<\/h2>\n<p><code>sysdate()<\/code> \u51fd\u6578\u5728\u8a31\u591a\u5834\u666f\u4e2d\u90fd\u975e\u5e38\u6709\u7528\uff0c\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u898b\u7684\u61c9\u7528\uff1a<\/p>\n<ul>\n<li><strong>\u65e5\u8a8c\u8a18\u9304\uff1a<\/strong>\u5728\u8a18\u9304\u7cfb\u7d71\u4e8b\u4ef6\u6642\uff0c\u4f7f\u7528 <code>sysdate()<\/code> \u53ef\u4ee5\u78ba\u4fdd\u6bcf\u500b\u4e8b\u4ef6\u7684\u6642\u9593\u6233\u662f\u6e96\u78ba\u7684\u3002<\/li>\n<li><strong>\u6578\u64da\u5206\u6790\uff1a<\/strong>\u5728\u9032\u884c\u6578\u64da\u5206\u6790\u6642\uff0c\u80fd\u5920\u7372\u53d6\u7576\u524d\u7684\u6642\u9593\u6709\u52a9\u65bc\u751f\u6210\u5831\u544a\u548c\u7d71\u8a08\u6578\u64da\u3002<\/li>\n<li><strong>\u5b9a\u6642\u4efb\u52d9\uff1a<\/strong>\u5728\u8a2d\u7f6e\u5b9a\u6642\u4efb\u52d9\u6642\uff0c\u53ef\u4ee5\u4f7f\u7528 <code>sysdate()<\/code> \u4f86\u78ba\u5b9a\u4efb\u52d9\u7684\u57f7\u884c\u6642\u9593\u3002<\/li>\n<\/ul>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-NvtWRcSRFM\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<p>\u96d6\u7136 <code>sysdate()<\/code> \u51fd\u6578\u975e\u5e38\u6709\u7528\uff0c\u4f46\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u4f7f\u7528 <code>now()<\/code> \u51fd\u6578\u53ef\u80fd\u66f4\u5408\u9069\u3002<code>now()<\/code> \u8fd4\u56de\u7684\u662f\u67e5\u8a62\u958b\u59cb\u6642\u7684\u6642\u9593\uff0c\u9019\u5728\u9700\u8981\u4fdd\u6301\u4e00\u81f4\u6027\u6642\u7279\u5225\u91cd\u8981\u3002\u56e0\u6b64\uff0c\u9078\u64c7\u4f7f\u7528\u54ea\u500b\u51fd\u6578\u61c9\u6839\u64da\u5177\u9ad4\u9700\u6c42\u800c\u5b9a\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-NvtWRcSRFM\">\u7e3d\u7d50<\/h2>\n<p>\u5728 MySQL \u4e2d\uff0c<code>sysdate()<\/code> \u51fd\u6578\u662f\u4e00\u500b\u5f37\u5927\u7684\u5de5\u5177\uff0c\u80fd\u5920\u5e6b\u52a9\u958b\u767c\u8005\u7372\u53d6\u7576\u524d\u7684\u65e5\u671f\u548c\u6642\u9593\uff0c\u4e26\u5728\u591a\u7a2e\u61c9\u7528\u5834\u666f\u4e2d\u767c\u63ee\u4f5c\u7528\u3002\u7121\u8ad6\u662f\u7528\u65bc\u65e5\u8a8c\u8a18\u9304\u3001\u6578\u64da\u5206\u6790\u9084\u662f\u5b9a\u6642\u4efb\u52d9\uff0c<code>sysdate()<\/code> \u90fd\u80fd\u63d0\u4f9b\u7cbe\u78ba\u7684\u6642\u9593\u6233\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u7ba1\u7406\u6642\u9593\u548c\u65e5\u671f\u7684\u958b\u767c\u8005\u4f86\u8aaa\uff0c\u638c\u63e1\u9019\u500b\u51fd\u6578\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\u6eff\u8db3\u60a8\u7684\u9700\u6c42\u3002\u7121\u8ad6\u662f <a href=\"https:\/\/server.hk\">\u9999\u6e2f\u4f3a\u670d\u5668<\/a> \u9084\u662f <a href=\"https:\/\/server.hk\">\u4e91\u4f3a\u670d\u5668<\/a>\uff0c\u6211\u5011\u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u7a69\u5b9a\u7684\u670d\u52d9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3 MySQL \u7684 sysdate() \u51fd\u6578\uff0c\u8f15\u9b06\u7372\u53d6\u7576\u524d\u6642\u9593\u548c\u65e5\u671f\uff0c\u63d0\u5347\u6578\u64da\u5eab\u64cd\u4f5c\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-76010","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/76010","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=76010"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/76010\/revisions"}],"predecessor-version":[{"id":76011,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/76010\/revisions\/76011"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=76010"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=76010"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=76010"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}