{"id":911,"date":"2020-09-03T14:38:07","date_gmt":"2020-09-03T06:38:07","guid":{"rendered":"http:\/\/www.gbase8.cn\/?p=911"},"modified":"2021-01-12T11:01:48","modified_gmt":"2021-01-12T03:01:48","slug":"gbase-8a%e6%95%b0%e6%8d%ae%e5%ba%93%e6%97%a5%e6%9c%9f%e5%87%bd%e6%95%b0%e5%a2%9e%e5%8a%a0%e5%87%8f%e5%b0%91%e6%9c%88%ef%bc%8c%e6%97%a5%e7%ad%89","status":"publish","type":"post","link":"https:\/\/www.gbase8.cn\/en\/911","title":{"rendered":"\u5357\u5927\u901a\u7528GBase 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"},"content":{"rendered":"<p>GBase 8a \u6570\u636e\u5e93\u652f\u6301\u5bf9\u65e5\u671f\u7684\u8c03\u6574\uff0c\u5305\u62ec\u589e\u52a0date_add,\u51cf\u5c11 date_sub \u6307\u5b9a\u7684\u65f6\u95f4\u3002\u65f6\u95f4\u5355\u4f4d\u652f\u6301\uff0c\u5e74\uff0c\u6708\uff0c\u65e5\uff0c\u661f\u671f\uff0c\u5c0f\u65f6\uff0c\u5206\uff0c\u79d2\uff0c\u6beb\u79d2\u7b49\u3002\uff0c\u5f53\u7136\u4e5f\u652f\u6301\u4ed6\u4eec\u4e4b\u95f4\u7684\u4e00\u4e9b\u7ec4\u5408\u3002\u8be5\u51fd\u6570\uff0c\u4e3b\u8981\u7528\u4e8e\u8303\u56f4\u67e5\u8be2\u4f7f\u7528\u3002\u6bd4\u5982 between and \u6216\u8005 \u5927\u4e8e\uff0c\u5c0f\u4e8e\u67d0\u4e2a\u65f6\u95f4\u6bb5\u7684\u60c5\u51b5\u3002<\/p>\n\n\n\n<p>\u8be5\u51fd\u6570\u548csubdate, adddate\u662f\u76f8\u540c\u7684\u7528\u6cd5\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-6a2a93f6ae55f\" 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-6a2a93f6ae55f\"  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\/911\/#%E5%8F%82%E8%80%83\" >\u53c2\u8003<\/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\/911\/#%E5%87%BD%E6%95%B0\" >Function<\/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\/911\/#%E5%8F%82%E6%95%B0\" >\u53c2\u6570<\/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\/911\/#%E6%A0%B7%E4%BE%8B\" >\u6837\u4f8b<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.gbase8.cn\/en\/911\/#%E9%87%87%E7%94%A8_adddatesubdate\" >\u91c7\u7528 adddate,subdate<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.gbase8.cn\/en\/911\/#%E5%8F%82%E8%80%83-2\" >\u53c2\u8003<\/a><\/li><\/ul><\/nav><\/div>\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<p>\u67e5\u770b2\u4e2a\u65f6\u95f4\u5dee\u8ddd\u7684\u79d2\u6570\uff0c\u8bf7\u53c2\u8003<\/p>\n\n\n\n<p><a href=\"https:\/\/www.gbase8.cn\/en\/885\/\">GBase 8a\u6570\u636e\u5e93\u4e24\u4e2a\u65f6\u95f4\u76f8\u5dee\u7684\u79d2\u6570<\/a><\/p>\n\n\n\n<p><a href=\"https:\/\/www.gbase8.cn\/en\/3105\/\">GBase 8a\u83b7\u5f97\u5f53\u524d\u65e5\u671f\u65f6\u95f4\u6beb\u79d2\u5fae\u79d2\u7684\u51e0\u4e2a\u51fd\u6570\u4f7f\u7528\u6837\u4f8b<\/a><\/p>\n\n\n\n<p><a href=\"https:\/\/www.gbase8.cn\/en\/2672\/\">GBase 8a\u5b57\u7b26\u4e32\u548c\u65e5\u671f\u51fd\u6570\u5217\u8868\u7d22\u5f15<\/a><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E5%87%BD%E6%95%B0\"><\/span>Function<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>DATE_ADD(date,INTERVAL expr type) \u589e\u52a0<br>DATE_SUB(date,INTERVAL expr type) \u51cf\u5c11<\/p>\n\n\n\n<p>\u8be5\u51fd\u6570\u548cadddate, subdate\u662f\u76f8\u540c\u7684\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E5%8F%82%E6%95%B0\"><\/span>\u53c2\u6570<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>date \u662f\u5f53\u524d\u65e5\u671f<\/p>\n\n\n\n<p>expr \u662f\u8981\u589e\u52a0\u7684\u6570\u503c\uff0c\u53ef\u4ee5\u662f\u5e38\u6570\uff0c\u4e5f\u53ef\u4ee5\u662f\u8ba1\u7b97\u503c<\/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><\/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>\ngbase&gt; select now(),date_add(now(),interval 1 month),date_add(now(),interval 1 week);\n+---------------------+----------------------------------+---------------------------------+\n| now()               | date_add(now(),interval 1 month) | date_add(now(),interval 1 week) |\n+---------------------+----------------------------------+---------------------------------+\n| 2020-09-03 10:27:23 | 2020-10-03 10:27:23              | 2020-09-10 10:27:23             |\n+---------------------+----------------------------------+---------------------------------+\n1 row in set (Elapsed: 00:00:00.00)\n\ngbase&gt; select now(),date_sub(now(),interval 1 month),date_sub(now(),interval 1 week);\n+---------------------+----------------------------------+---------------------------------+\n| now()               | date_sub(now(),interval 1 month) | date_sub(now(),interval 1 week) |\n+---------------------+----------------------------------+---------------------------------+\n| 2020-09-03 11:57:08 | 2020-08-03 11:57:08              | 2020-08-27 11:57:08             |\n+---------------------+----------------------------------+---------------------------------+\n1 row in set (Elapsed: 00:00:00.00)\n<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E9%87%87%E7%94%A8_adddatesubdate\"><\/span>\u91c7\u7528 adddate,subdate<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>gbase&gt; select now(),adddate(now(),interval 1 month),adddate(now(),interval 1 week);\n+---------------------+---------------------------------+--------------------------------+\n| now()               | adddate(now(),interval 1 month) | adddate(now(),interval 1 week) |\n+---------------------+---------------------------------+--------------------------------+\n| 2020-09-03 11:55:36 | 2020-10-03 11:55:36             | 2020-09-10 11:55:36            |\n+---------------------+---------------------------------+--------------------------------+\n1 row in set (Elapsed: 00:00:00.00)\n\ngbase&gt; select now(),subdate(now(),interval 1 month),subdate(now(),interval 1 week);\n+---------------------+---------------------------------+--------------------------------+\n| now()               | subdate(now(),interval 1 month) | subdate(now(),interval 1 week) |\n+---------------------+---------------------------------+--------------------------------+\n| 2020-09-03 11:56:55 | 2020-08-03 11:56:55             | 2020-08-27 11:56:55            |\n+---------------------+---------------------------------+--------------------------------+\n1 row in set (Elapsed: 00:00:00.00)\n<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E5%8F%82%E8%80%83-2\"><\/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=\"mgsgAugdbQ\"><a href=\"https:\/\/www.gbase8.cn\/en\/3043\/\">GBase 8a\u7684\u65e5\u671f\u589e\u51cf\u51fd\u6570addDate\u548csubDate\u4f7f\u7528\u65b9\u6cd5\u548c\u6837\u4f8b<\/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\u7684\u65e5\u671f\u589e\u51cf\u51fd\u6570addDate\u548csubDate\u4f7f\u7528\u65b9\u6cd5\u548c\u6837\u4f8b\u300b\u2014\u8001\u7d2b\u7af9\u7684\u5bb6\" src=\"https:\/\/www.gbase8.cn\/3043\/embed#?secret=mgsgAugdbQ\" data-secret=\"mgsgAugdbQ\" width=\"600\" height=\"338\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\"><\/iframe>\n<\/div><\/figure>\n\n\n\n<p>\u5176\u5b83\u65e5\u671f\u51fd\u6570\uff0c\u8bf7\u53c2\u8003<\/p>\n\n\n\n<p><a href=\"http:\/\/www.gbase8.cn\/en\/?tag=%e6%97%a5%e6%9c%9f\">http:\/\/www.gbase8.cn\/?tag=%e6%97%a5%e6%9c%9f<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>\u5357\u5927\u901a\u7528GBase 8a \u6570\u636e\u5e93\u652f\u6301\u5bf9\u65e5\u671f\u7684\u8c03\u6574\uff0c\u5305\u62ec\u589e\u52a0date_add,\u51cf\u5c11 date_sub \u6307\u5b9a\u7684\u65f6\u95f4\u3002\u65f6\u95f4\u5355\u4f4d\u652f\u6301\uff0c\u5e74\uff0c\u6708\uff0c\u65e5\uff0c\u661f\u671f\uff0c\u5c0f\u65f6\uff0c\u5206\uff0c\u79d2\uff0c\u6beb\u79d2\u7b49\u3002\uff0c\u5f53\u7136\u4e5f\u652f\u6301\u4ed6\u4eec\u4e4b\u95f4\u7684\u4e00\u4e9b\u7ec4\u5408\u3002\u8be5\u51fd\u6570\uff0c\u4e3b\u8981\u7528\u4e8e\u8303\u56f4\u67e5\u8be2\u4f7f\u7528\u3002\u6bd4\u5982 between and \u6216\u8005 \u5927\u4e8e\uff0c\u5c0f\u4e8e\u67d0\u4e2a\u65f6\u95f4\u6bb5\u7684\u60c5\u51b5\u3002<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[36,67],"class_list":["post-911","post","type-post","status-publish","format-standard","hentry","category-gbase8a","tag-36","tag-67"],"_links":{"self":[{"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/posts\/911","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=911"}],"version-history":[{"count":15,"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/posts\/911\/revisions"}],"predecessor-version":[{"id":3375,"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/posts\/911\/revisions\/3375"}],"wp:attachment":[{"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/media?parent=911"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/categories?post=911"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/tags?post=911"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}