{"id":3043,"date":"2021-01-07T12:20:21","date_gmt":"2021-01-07T04:20:21","guid":{"rendered":"https:\/\/www.gbase8.cn\/?p=3043"},"modified":"2021-01-07T12:20:22","modified_gmt":"2021-01-07T04:20:22","slug":"gbase-8a%e7%9a%84%e6%97%a5%e6%9c%9f%e5%a2%9e%e5%87%8f%e5%87%bd%e6%95%b0adddate%e5%92%8csubdate%e4%bd%bf%e7%94%a8%e6%96%b9%e6%b3%95%e5%92%8c%e6%a0%b7%e4%be%8b","status":"publish","type":"post","link":"https:\/\/www.gbase8.cn\/en\/3043","title":{"rendered":"\u5357\u5927\u901a\u7528GBase 8a\u7684\u65e5\u671f\u589e\u51cf\u51fd\u6570addDate\u548csubDate\u4f7f\u7528\u65b9\u6cd5\u548c\u6837\u4f8b"},"content":{"rendered":"<p>\u672c\u6587\u4ecb\u7ecdGBase 8a\u6570\u636e\u5e93\u96c6\u7fa4\uff0c\u5bf9\u65e5\u671f\u8fdb\u884c\u589e\u52a0\u3001\u51cf\u5c11\u5929\u3001\u5c0f\u65f6\u7b49\u64cd\u4f5c\u7684\u51fd\u6570addDate\u548csubDate\u7684\u4f7f\u7528\u65b9\u6cd5\u548c\u4f8b\u5b50\u3002<\/p>\n\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_84 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Directory Navigation<\/p>\n<label for=\"ez-toc-cssicon-toggle-item-6a2aef3bad05d\" class=\"ez-toc-cssicon-toggle-label\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewbox=\"0 0 24 24\" version=\"1.2\" baseprofile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/label><input type=\"checkbox\"  id=\"ez-toc-cssicon-toggle-item-6a2aef3bad05d\"  aria-label=\"Toggle\" \/><nav><ul class='ez-toc-list ez-toc-list-level-1' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.gbase8.cn\/en\/3043\/#%E8%AF%AD%E6%B3%95\" >\u8bed\u6cd5<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.gbase8.cn\/en\/3043\/#%E8%AF%B4%E6%98%8E\" >\u8bf4\u660e<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.gbase8.cn\/en\/3043\/#%E6%A0%B7%E4%BE%8B\" >\u6837\u4f8b<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.gbase8.cn\/en\/3043\/#%E5%8F%82%E8%80%83\" >\u53c2\u8003<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E8%AF%AD%E6%B3%95\"><\/span>\u8bed\u6cd5<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code>ADDDATE(date,INTERVAL expr type)\uff0cADDDATE(expr,days)\r\nSUBDATE(date,INTERVAL expr type)\uff0cADDDATE(expr,days)\r<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E8%AF%B4%E6%98%8E\"><\/span>\u8bf4\u660e<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u5173\u952e\u8bcd INTERVAL \u53ca type \u5206\u7c7b\u7b26\u5747\u4e0d\u533a\u5206\u5927\u5c0f\u5199\u3002<br>\u5f53\u8c03\u7528\u7b2c\u4e8c\u4e2a\u53c2\u6570 INTERVAL \u65f6\uff0cADDDATE()\u7b49\u4ef7\u4e8e DATE_ADD()\uff0cSUBDATE()\u7b49\u4ef7\u4e8e DATE_SUB()<br>expr \u662f\u4e00\u4e2a\u65e5\u671f\u6216\u8005 datetime \u8868\u8fbe\u5f0f\uff0cdays \u662f\u8981\u52a0\u5165\u6216\u51cf\u5c11expr \u4e2d\u7684\u65e5\u671f\u7684\u5929\u6570\u3002\u9ed8\u8ba4\u589e\u52a0\u5929\u6570\u3002<\/p>\n\n\n\n<p>type \u662f\u589e\u52a0\u7684\u7c92\u5ea6\uff0c\u652f\u6301<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>type<\/th><th scope=\"col\"><em><code>type \u7c7b\u578b<\/code><\/em><\/th><th scope=\"col\">\u9700\u8981\u7684\u683c\u5f0f<\/th><\/tr><\/thead><tbody><tr><td>\u6beb\u79d2<\/td><td><code>MICROSECOND<\/code><\/td><td><code>MICROSECONDS<\/code><\/td><\/tr><tr><td>\u79d2<\/td><td><code>SECOND<\/code><\/td><td><code>SECONDS<\/code><\/td><\/tr><tr><td>\u5206<\/td><td><code>MINUTE<\/code><\/td><td><code>MINUTES<\/code><\/td><\/tr><tr><td>\u5c0f\u65f6<\/td><td><code>HOUR<\/code><\/td><td><code>HOURS<\/code><\/td><\/tr><tr><td>\u5929<\/td><td><code>DAY<\/code><\/td><td><code>DAYS<\/code><\/td><\/tr><tr><td>\u661f\u671f<\/td><td><code>WEEK<\/code><\/td><td><code>WEEKS<\/code><\/td><\/tr><tr><td>\u6708<\/td><td><code>MONTH<\/code><\/td><td><code>MONTHS<\/code><\/td><\/tr><tr><td>\u5b63\u5ea6<\/td><td><code>QUARTER<\/code><\/td><td><code>QUARTERS<\/code><\/td><\/tr><tr><td>\u5e74<\/td><td><code>YEAR<\/code><\/td><td><code>YEARS<\/code><\/td><\/tr><tr><td>\u79d2.\u6beb\u79d2<\/td><td><code>SECOND_MICROSECOND<\/code><\/td><td><code>'SECONDS.MICROSECONDS'<\/code><\/td><\/tr><tr><td>\u5206:\u79d2.\u6beb\u79d2<\/td><td><code>MINUTE_MICROSECOND<\/code><\/td><td><code>'MINUTES:SECONDS.MICROSECONDS'<\/code><\/td><\/tr><tr><td>\u5206:\u79d2<\/td><td><code>MINUTE_SECOND<\/code><\/td><td><code>'MINUTES:SECONDS'<\/code><\/td><\/tr><tr><td>\u65f6\u5206\u79d2.\u6beb\u79d2<\/td><td><code>HOUR_MICROSECOND<\/code><\/td><td><code>'HOURS:MINUTES:SECONDS.MICROSECONDS'<\/code><\/td><\/tr><tr><td>\u65f6\u5206\u79d2<\/td><td><code>HOUR_SECOND<\/code><\/td><td><code>'HOURS:MINUTES:SECONDS'<\/code><\/td><\/tr><tr><td>\u65f6\u5206<\/td><td><code>HOUR_MINUTE<\/code><\/td><td><code>'HOURS:MINUTES'<\/code><\/td><\/tr><tr><td>\u5929\u65f6\u5206\u79d2\u6beb\u79d2<\/td><td><code>DAY_MICROSECOND<\/code><\/td><td><code>'DAYS HOURS:MINUTES:SECONDS.MICROSECONDS'<\/code><\/td><\/tr><tr><td>\u5929\u65f6\u5206\u79d2<\/td><td><code>DAY_SECOND<\/code><\/td><td><code>'DAYS HOURS:MINUTES:SECONDS'<\/code><\/td><\/tr><tr><td>\u5929\u65f6\u5206<\/td><td><code>DAY_MINUTE<\/code><\/td><td><code>'DAYS HOURS:MINUTES'<\/code><\/td><\/tr><tr><td>\u5929\u65f6<\/td><td><code>DAY_HOUR<\/code><\/td><td><code>'DAYS HOURS'<\/code><\/td><\/tr><tr><td>\u5e74\u6708<\/td><td><code>YEAR_MONTH<\/code><\/td><td><code>'YEARS-MONTHS'<\/code><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\u8be6\u7ec6\u7684\u53c2\u6570\u8bf7\u770b\u540e\u9762\u7684\u53c2\u8003\u90e8\u5206<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E6%A0%B7%E4%BE%8B\"><\/span>\u6837\u4f8b<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code>gbase> select now(),adddate(now(),1);\r\n+---------------------+---------------------+\r\n| now()               | adddate(now(),1)    |\r\n+---------------------+---------------------+\r\n| 2021-01-07 12:18:27 | 2021-01-08 12:18:27 |\r\n+---------------------+---------------------+\r\n1 row in set (Elapsed: 00:00:00.00)\r\n\r\ngbase> select now(),adddate(now(),interval 1 day);\r\n+---------------------+-------------------------------+\r\n| now()               | adddate(now(),interval 1 day) |\r\n+---------------------+-------------------------------+\r\n| 2021-01-07 12:18:36 | 2021-01-08 12:18:36           |\r\n+---------------------+-------------------------------+\r\n1 row in set (Elapsed: 00:00:00.00)\r\n\r\ngbase> select now(),subdate(now(),interval 1 day);\r\n+---------------------+-------------------------------+\r\n| now()               | subdate(now(),interval 1 day) |\r\n+---------------------+-------------------------------+\r\n| 2021-01-07 12:18:45 | 2021-01-06 12:18:45           |\r\n+---------------------+-------------------------------+\r\n1 row in set (Elapsed: 00:00:00.00)\r\n<\/code><\/pre>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E5%8F%82%E8%80%83\"><\/span>\u53c2\u8003<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<figure class=\"wp-block-embed is-type-wp-embed is-provider-\u8001\u7d2b\u7af9\u7684\u5bb6 wp-block-embed-\u8001\u7d2b\u7af9\u7684\u5bb6\"><div class=\"wp-block-embed__wrapper\">\n<blockquote class=\"wp-embedded-content\" data-secret=\"1sF1wyFaz8\"><a href=\"https:\/\/www.gbase8.cn\/en\/911\/\">GBase 8a\u6570\u636e\u5e93\u65e5\u671f\u51fd\u6570date_add,date_sub\u589e\u52a0\u51cf\u5c11\u5e74\u3001\u6708\u3001\u65e5\u3001\u661f\u671f\uff0c\u65f6\u5206\u79d2\u6beb\u79d2\u7b49<\/a><\/blockquote><iframe loading=\"lazy\" class=\"wp-embedded-content\" sandbox=\"allow-scripts\" security=\"restricted\" style=\"position: absolute; clip: rect(1px, 1px, 1px, 1px);\" title=\"\u300aGBase 8a\u6570\u636e\u5e93\u65e5\u671f\u51fd\u6570date_add,date_sub\u589e\u52a0\u51cf\u5c11\u5e74\u3001\u6708\u3001\u65e5\u3001\u661f\u671f\uff0c\u65f6\u5206\u79d2\u6beb\u79d2\u7b49\u300b\u2014\u8001\u7d2b\u7af9\u7684\u5bb6\" src=\"https:\/\/www.gbase8.cn\/911\/embed#?secret=1sF1wyFaz8\" data-secret=\"1sF1wyFaz8\" width=\"600\" height=\"338\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\"><\/iframe>\n<\/div><\/figure>","protected":false},"excerpt":{"rendered":"<p>\u672c\u6587\u4ecb\u7ecdGBase 8a\u6570\u636e\u5e93\u96c6\u7fa4\uff0c\u5bf9\u65e5\u671f\u8fdb\u884c\u589e\u52a0\u3001\u51cf\u5c11\u5929\u3001\u5c0f\u65f6\u7b49\u64cd\u4f5c\u7684\u51fd\u6570addDate\u548csubDate\u7684\u4f7f\u7528\u65b9\u6cd5\u548c\u4f8b\u5b50\u3002<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[36],"class_list":["post-3043","post","type-post","status-publish","format-standard","hentry","category-gbase8a","tag-36"],"_links":{"self":[{"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/posts\/3043","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/comments?post=3043"}],"version-history":[{"count":7,"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/posts\/3043\/revisions"}],"predecessor-version":[{"id":3069,"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/posts\/3043\/revisions\/3069"}],"wp:attachment":[{"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/media?parent=3043"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/categories?post=3043"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/tags?post=3043"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}