{"id":5962,"date":"2024-11-14T08:19:02","date_gmt":"2024-11-14T00:19:02","guid":{"rendered":"https:\/\/fwq.ai\/blog\/5962\/"},"modified":"2024-11-14T08:19:02","modified_gmt":"2024-11-14T00:19:02","slug":"sql%e4%b8%addatediff%e5%87%bd%e6%95%b0%e6%80%8e%e4%b9%88%e7%94%a8","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/5962\/","title":{"rendered":"sql\u4e2ddatediff\u51fd\u6570\u600e\u4e48\u7528"},"content":{"rendered":"<blockquote><p>\n  datediff \u51fd\u6570\u53ef\u8ba1\u7b97\u4e24\u4e2a\u65e5\u671f\u4e4b\u95f4\u7684\u5929\u6570\u5dee\u3002\u8bed\u6cd5\uff1adatediff(interval, start_date, end_date)\u3002interval \u6307\u793a\u95f4\u9694\u5355\u4f4d\uff08\u5e74\u4efd\u3001\u6708\u4efd\u3001\u5929\u6570\u7b49\uff09\u3002start_date \u548c end_date \u662f\u5f00\u59cb\u548c\u7ed3\u675f\u65e5\u671f\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202406\/12\/2024061202391937827.jpg\" class=\"aligncenter\" title=\"sql\u4e2ddatediff\u51fd\u6570\u600e\u4e48\u7528\u63d2\u56fe\" alt=\"sql\u4e2ddatediff\u51fd\u6570\u600e\u4e48\u7528\u63d2\u56fe\" \/><\/p>\n<p><strong>SQL \u4e2d DATEDIFF \u51fd\u6570\u7684\u4f7f\u7528\u65b9\u6cd5<\/strong><\/p>\n<p>DATEDIFF \u51fd\u6570\u7528\u4e8e\u8ba1\u7b97\u4e24\u4e2a\u65e5\u671f\u4e4b\u95f4\u7684\u5929\u6570\u5dee\u3002\u5176\u8bed\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre>DATEDIFF(interval, start_date, end_date)<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u5176\u4e2d\uff1a<\/p>\n<ul>\n<li>interval\uff1a\u95f4\u9694\u5355\u4f4d\uff0c\u53ef\u4ee5\u662f YEAR\u3001MONTH\u3001DAY\u3001HOUR\u3001MINUTE \u6216 SECOND\u3002<\/li>\n<li>start_date\uff1a\u5f00\u59cb\u65e5\u671f\u3002<\/li>\n<li>end_date\uff1a\u7ed3\u675f\u65e5\u671f\u3002<\/li>\n<\/ul>\n<p>\u4ee5\u4e0b\u662f DATEDIFF \u51fd\u6570\u7528\u6cd5\u7684\u4e00\u4e9b\u793a\u4f8b\uff1a<\/p>\n<p><strong>\u8ba1\u7b97\u4e24\u4e2a\u65e5\u671f\u4e4b\u95f4\u7684\u5929\u6570\u5dee<\/strong><\/p>\n<pre>SELECT DATEDIFF(DAY, '2023-03-01', '2023-04-01');<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u8fd4\u56de\uff1a28<\/p>\n<p><strong>\u8ba1\u7b97\u4e24\u4e2a\u65e5\u671f\u4e4b\u95f4\u7684\u6708\u6570\u5dee<\/strong><\/p>\n<pre>SELECT DATEDIFF(MONTH, '2023-01-01', '2023-03-01');<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u8fd4\u56de\uff1a2<\/p>\n<p><strong>\u8ba1\u7b97\u4e24\u4e2a\u65e5\u671f\u4e4b\u95f4\u7684\u5e74\u4efd\u5dee<\/strong><\/p>\n<pre>SELECT DATEDIFF(YEAR, '2020-01-01', '2023-03-01');<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u8fd4\u56de\uff1a3<\/p>\n<p><strong>\u6ce8\u610f\uff1a<\/strong><\/p>\n<ul>\n<li>DATEDIFF \u51fd\u6570\u8fd4\u56de\u4e00\u4e2a\u6574\u6570\uff0c\u8868\u793a\u4e24\u4e2a\u65e5\u671f\u4e4b\u95f4\u7684\u95f4\u9694\u3002<\/li>\n<li>\u5982\u679c start_date \u5927\u4e8e end_date\uff0c\u51fd\u6570\u5c06\u8fd4\u56de\u8d1f\u503c\u3002<\/li>\n<li>DATEDIFF \u51fd\u6570\u4e0d\u652f\u6301 TIME \u6216 DATETIME \u6570\u636e\u7c7b\u578b\u3002<\/li>\n<\/ul>\n<p>\u4ee5\u4e0a\u5c31\u662fsql\u4e2ddatediff\u51fd\u6570\u600e\u4e48\u7528\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>datediff \u51fd\u6570\u53ef\u8ba1\u7b97\u4e24\u4e2a\u65e5\u671f\u4e4b\u95f4\u7684\u5929\u6570\u5dee\u3002\u8bed\u6cd5\uff1adatediff(interval, start_date, end_date)\u3002interval \u6307\u793a\u95f4\u9694\u5355\u4f4d\uff08\u5e74\u4efd\u3001\u6708\u4efd\u3001\u5929\u6570\u7b49\uff09\u3002start_date \u548c end_date \u662f\u5f00\u59cb\u548c\u7ed3\u675f\u65e5\u671f\u3002 SQL \u4e2d DATEDIFF \u51fd\u6570\u7684\u4f7f\u7528\u65b9\u6cd5 DATEDIFF \u51fd\u6570\u7528\u4e8e\u8ba1\u7b97\u4e24\u4e2a\u65e5\u671f\u4e4b\u95f4\u7684\u5929\u6570\u5dee\u3002\u5176\u8bed\u6cd5\u5982\u4e0b\uff1a DATEDIFF(interval, start_date, end_date) \u767b\u5f55\u540e\u590d\u5236 \u5176\u4e2d\uff1a interval\uff1a\u95f4\u9694\u5355\u4f4d\uff0c\u53ef\u4ee5\u662f YEAR\u3001MONTH\u3001DAY\u3001HOUR\u3001MINUTE \u6216 SECOND\u3002 start_date\uff1a\u5f00\u59cb\u65e5\u671f\u3002 end_date\uff1a\u7ed3\u675f\u65e5\u671f\u3002 \u4ee5\u4e0b\u662f DATEDIFF \u51fd\u6570\u7528\u6cd5\u7684\u4e00\u4e9b\u793a\u4f8b\uff1a \u8ba1\u7b97\u4e24\u4e2a\u65e5\u671f\u4e4b\u95f4\u7684\u5929\u6570\u5dee SELECT DATEDIFF(DAY, &#8216;2023-03-01&#8217;, &#8216;2023-04-01&#8217;); \u767b\u5f55\u540e\u590d\u5236 \u8fd4\u56de\uff1a28 \u8ba1\u7b97\u4e24\u4e2a\u65e5\u671f\u4e4b\u95f4\u7684\u6708\u6570\u5dee SELECT DATEDIFF(MONTH, &#8216;2023-01-01&#8217;, &#8216;2023-03-01&#8217;); \u767b\u5f55\u540e\u590d\u5236 \u8fd4\u56de\uff1a2 \u8ba1\u7b97\u4e24\u4e2a\u65e5\u671f\u4e4b\u95f4\u7684\u5e74\u4efd\u5dee SELECT DATEDIFF(YEAR, &#8216;2020-01-01&#8217;, &#8216;2023-03-01&#8217;); \u767b\u5f55\u540e\u590d\u5236 \u8fd4\u56de\uff1a3 \u6ce8\u610f\uff1a DATEDIFF \u51fd\u6570\u8fd4\u56de\u4e00\u4e2a\u6574\u6570\uff0c\u8868\u793a\u4e24\u4e2a\u65e5\u671f\u4e4b\u95f4\u7684\u95f4\u9694\u3002 \u5982\u679c start_date \u5927\u4e8e [&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-5962","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/5962","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=5962"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/5962\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=5962"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=5962"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=5962"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}