{"id":5863,"date":"2024-11-14T09:02:49","date_gmt":"2024-11-14T01:02:49","guid":{"rendered":"https:\/\/fwq.ai\/blog\/5863\/"},"modified":"2024-11-14T09:02:49","modified_gmt":"2024-11-14T01:02:49","slug":"sql%e6%97%b6%e9%97%b4%e6%80%8e%e4%b9%88%e8%8e%b7%e5%8f%96","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/5863\/","title":{"rendered":"sql\u65f6\u95f4\u600e\u4e48\u83b7\u53d6"},"content":{"rendered":"<blockquote><p>\n  \u83b7\u53d6 sql \u4e2d\u7684\u65f6\u95f4\u6709\u591a\u79cd\u65b9\u6cd5\uff1a\u4f7f\u7528 now() \u51fd\u6570\u8fd4\u56de\u5f53\u524d\u7cfb\u7edf\u65f6\u95f4\u6233\u3002\u4f7f\u7528 getdate() \u51fd\u6570\uff08microsoft sql server\uff09\u3002\u4f7f\u7528 current_timestamp \u51fd\u6570\uff08postgresql\uff09\u3002\u4f7f\u7528 sysdate \u51fd\u6570\uff08oracle database\uff09\u3002\u4f7f\u7528 current_date \u51fd\u6570\uff08mysql\uff09\u3002\u4f7f\u7528 getutcdate() \u51fd\u6570\uff08mysql\uff0c\u8fd4\u56de utc \u65f6\u95f4\uff09\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202406\/03\/2024060321065558168.jpg\" class=\"aligncenter\" title=\"sql\u65f6\u95f4\u600e\u4e48\u83b7\u53d6\u63d2\u56fe\" alt=\"sql\u65f6\u95f4\u600e\u4e48\u83b7\u53d6\u63d2\u56fe\" \/><\/p>\n<p><strong>\u5982\u4f55\u5728 SQL \u4e2d\u83b7\u53d6\u65f6\u95f4<\/strong><\/p>\n<p>\u5728 SQL \u4e2d\u83b7\u53d6\u65f6\u95f4\u7684\u65b9\u6cd5\u6709\u591a\u79cd\uff0c\u5177\u4f53\u53d6\u51b3\u4e8e\u6240\u7528\u7684\u6570\u636e\u5e93\u7ba1\u7406\u7cfb\u7edf (DBMS)\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u6700\u5e38\u7528\u7684\u65b9\u6cd5\uff1a<\/p>\n<p><strong>\u4f7f\u7528 NOW() \u51fd\u6570<\/strong><\/p>\n<p>NOW() \u51fd\u6570\u5728\u5927\u591a\u6570 DBMS \u4e2d\u90fd\u53ef\u4ee5\u4f7f\u7528\uff0c\u5b83\u8fd4\u56de\u5f53\u524d\u7cfb\u7edf\u65f6\u95f4\u6233\u3002\u4f8b\u5982\uff1a<\/p>\n<pre>SELECT NOW();<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u8fd4\u56de\u503c\u5c06\u7c7b\u4f3c\u4e8e\u4ee5\u4e0b\u5185\u5bb9\uff1a<\/p>\n<pre>2023-03-08 14:36:23<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p><strong>\u4f7f\u7528 GETDATE() \u51fd\u6570<\/strong><\/p>\n<p>GETDATE() \u51fd\u6570\u5728 Microsoft SQL Server \u4e2d\u4f7f\u7528\uff0c\u5b83\u8fd4\u56de\u5f53\u524d\u7cfb\u7edf\u65f6\u95f4\u6233\u3002\u7528\u6cd5\u4e0e NOW() \u51fd\u6570\u7c7b\u4f3c\uff1a<\/p>\n<pre>SELECT GETDATE();<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p><strong>\u4f7f\u7528 CURRENT_TIMESTAMP \u51fd\u6570<\/strong><\/p>\n<p>CURRENT_TIMESTAMP \u51fd\u6570\u5728 PostgreSQL \u4e2d\u4f7f\u7528\uff0c\u5b83\u8fd4\u56de\u5f53\u524d\u7cfb\u7edf\u65f6\u95f4\u6233\u3002\u7528\u6cd5\u4e5f\u4e0e NOW() \u51fd\u6570\u7c7b\u4f3c\uff1a<\/p>\n<pre>SELECT CURRENT_TIMESTAMP;<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p><strong>\u4f7f\u7528 SYSDATE \u51fd\u6570<\/strong><\/p>\n<p>SYSDATE \u51fd\u6570\u5728 Oracle Database \u4e2d\u4f7f\u7528\uff0c\u5b83\u8fd4\u56de\u5f53\u524d\u7cfb\u7edf\u65e5\u671f\u3002\u7528\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre>SELECT SYSDATE;<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p><strong>\u4f7f\u7528 CURRENT_DATE \u51fd\u6570<\/strong><\/p>\n<p>CURRENT_DATE \u51fd\u6570\u5728 MySQL \u4e2d\u4f7f\u7528\uff0c\u5b83\u8fd4\u56de\u5f53\u524d\u7cfb\u7edf\u65e5\u671f\u3002\u7528\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre>SELECT CURRENT_DATE;<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p><strong>\u4f7f\u7528 GETUTCDATE() \u51fd\u6570<\/strong><\/p>\n<p>GETUTCDATE() \u51fd\u6570\u5728 MySQL \u4e2d\u4f7f\u7528\uff0c\u5b83\u8fd4\u56de\u5f53\u524d\u534f\u8c03\u4e16\u754c\u65f6 (UTC) \u65e5\u671f\u3002\u7528\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre>SELECT GETUTCDATE();<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u9664\u4e86\u8fd9\u4e9b\u65b9\u6cd5\u4e4b\u5916\uff0c\u67d0\u4e9b DBMS \u8fd8\u63d0\u4f9b\u5176\u4ed6\u51fd\u6570\u6765\u83b7\u53d6\u7279\u5b9a\u65f6\u95f4\u90e8\u5206\uff0c\u4f8b\u5982\uff1a<\/p>\n<ul>\n<li>CURTIME() &#8211; \u8fd4\u56de\u5f53\u524d\u65f6\u95f4<\/li>\n<li>CURDATE() &#8211; \u8fd4\u56de\u5f53\u524d\u65e5\u671f<\/li>\n<li>YEAR() &#8211; \u8fd4\u56de\u5e74\u4efd<\/li>\n<li>MONTH() &#8211; \u8fd4\u56de\u6708\u4efd<\/li>\n<li>DAY() &#8211; \u8fd4\u56de\u65e5\u671f<\/li>\n<li>HOUR() &#8211; \u8fd4\u56de\u5c0f\u65f6<\/li>\n<li>MINUTE() &#8211; \u8fd4\u56de\u5206\u949f<\/li>\n<li>SECOND() &#8211; \u8fd4\u56de\u79d2<\/li>\n<\/ul>\n<p>\u4ee5\u4e0a\u5c31\u662fsql\u65f6\u95f4\u600e\u4e48\u83b7\u53d6\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u7f51\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u83b7\u53d6 sql \u4e2d\u7684\u65f6\u95f4\u6709\u591a\u79cd\u65b9\u6cd5\uff1a\u4f7f\u7528 now() \u51fd\u6570\u8fd4\u56de\u5f53\u524d\u7cfb\u7edf\u65f6\u95f4\u6233\u3002\u4f7f\u7528 getdate() \u51fd\u6570\uff08microsoft sql server\uff09\u3002\u4f7f\u7528 current_timestamp \u51fd\u6570\uff08postgresql\uff09\u3002\u4f7f\u7528 sysdate \u51fd\u6570\uff08oracle database\uff09\u3002\u4f7f\u7528 current_date \u51fd\u6570\uff08mysql\uff09\u3002\u4f7f\u7528 getutcdate() \u51fd\u6570\uff08mysql\uff0c\u8fd4\u56de utc \u65f6\u95f4\uff09\u3002 \u5982\u4f55\u5728 SQL \u4e2d\u83b7\u53d6\u65f6\u95f4 \u5728 SQL \u4e2d\u83b7\u53d6\u65f6\u95f4\u7684\u65b9\u6cd5\u6709\u591a\u79cd\uff0c\u5177\u4f53\u53d6\u51b3\u4e8e\u6240\u7528\u7684\u6570\u636e\u5e93\u7ba1\u7406\u7cfb\u7edf (DBMS)\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u6700\u5e38\u7528\u7684\u65b9\u6cd5\uff1a \u4f7f\u7528 NOW() \u51fd\u6570 NOW() \u51fd\u6570\u5728\u5927\u591a\u6570 DBMS \u4e2d\u90fd\u53ef\u4ee5\u4f7f\u7528\uff0c\u5b83\u8fd4\u56de\u5f53\u524d\u7cfb\u7edf\u65f6\u95f4\u6233\u3002\u4f8b\u5982\uff1a SELECT NOW(); \u767b\u5f55\u540e\u590d\u5236 \u8fd4\u56de\u503c\u5c06\u7c7b\u4f3c\u4e8e\u4ee5\u4e0b\u5185\u5bb9\uff1a 2023-03-08 14:36:23 \u767b\u5f55\u540e\u590d\u5236 \u4f7f\u7528 GETDATE() \u51fd\u6570 GETDATE() \u51fd\u6570\u5728 Microsoft SQL Server \u4e2d\u4f7f\u7528\uff0c\u5b83\u8fd4\u56de\u5f53\u524d\u7cfb\u7edf\u65f6\u95f4\u6233\u3002\u7528\u6cd5\u4e0e NOW() \u51fd\u6570\u7c7b\u4f3c\uff1a SELECT GETDATE(); \u767b\u5f55\u540e\u590d\u5236 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-5863","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/5863","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=5863"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/5863\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=5863"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=5863"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=5863"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}