{"id":298,"date":"2022-10-19T14:07:23","date_gmt":"2022-10-19T06:07:23","guid":{"rendered":"http:\/\/www.cgh0610.cn\/?p=298"},"modified":"2022-10-19T14:07:23","modified_gmt":"2022-10-19T06:07:23","slug":"mysql%e5%b8%b8%e7%94%a8%e6%97%a5%e6%9c%9f%e3%80%81%e6%97%b6%e9%97%b4%e6%9f%a5%e8%af%a2","status":"publish","type":"post","link":"https:\/\/www.cgh0610.cn\/?p=298","title":{"rendered":"mysql\u5e38\u7528\u65e5\u671f\u3001\u65f6\u95f4\u67e5\u8be2"},"content":{"rendered":"<pre><code class=\"sql\">select curdate();  --\u83b7\u53d6\u5f53\u524d\u65e5\u671f\nselect last_day(curdate());  --\u83b7\u53d6\u672c\u6708\u6700\u540e\u4e00\u5929\u3002\nselect DATE_ADD(curdate(),interval -day(curdate())+1 day);  -- \u83b7\u53d6\u672c\u6708\u7b2c\u4e00\u5929\nselect date_add(curdate()-day(curdate())+1,interval 1 month);  -- \u83b7\u53d6\u4e0b\u4e2a\u6708\u7684\u7b2c\u4e00\u5929\nselect date_sub(curdate()-day(curdate())+1,interval 1 month);  -- \u4e0a\u4e2a\u6708\u7b2c\u4e00\u5929\nselect last_day(date_sub(curdate(),interval 1 month)); -- \u4e0a\u4e2a\u6708\u6700\u540e\u4e00\u5929\nselect DATEDIFF(date_add(curdate()-day(curdate())+1,interval 1 month ),DATE_ADD(curdate(),interval -day(curdate())+1 day)) from dual; --\u83b7\u53d6\u5f53\u524d\u6708\u7684\u5929\u6570\nselect subdate(curdate(),date_format(curdate(),'%w')-1) -- \u672c\u5468\u4e00\nSELECT DATE_SUB(now(),INTERVAL WEEKDAY(now()) day); -- \u672c\u5468\u4e00\nselect subdate(curdate(),date_format(curdate(),'%w')-7) -- \u672c\u5468\u65e5\n\n-- \u524d\u4e00\u79d2\nselect SUBDATE(now(),interval 1 second);\n-- \u524d\u4e00\u5206\u949f\nselect SUBDATE(now(),interval 1 minute);\n-- \u524d\u4e00\u4e2a\u5c0f\u65f6\nSELECT date_sub(NOW(), interval 1 hour)\n-- \u524d\u4e00\u5929\u67d0\u4e2a\u65f6\u95f4\u70b9\nSELECT date_sub(DATE_FORMAT(NOW(),'%Y-%m-%d 18:00:00'), interval 1 day)\n-- \u524d\u4e00\u5929\nSELECT date_sub(now(),interval 1 day)\n-- \u524d\u4e00\u6708 \u540e\u4e00\u6708\ndate_sub(curdate(),interval 1 month) \u8868\u793a 2013-04-20\ndate_sub(curdate(),interval -1 month) \u8868\u793a 2013-06-20\n-- \u524d\u4e00\u5e74 \u540e\u4e00\u5e74\ndate_sub(curdate(),interval 1 year) \u8868\u793a 2012-05-20\ndate_sub(curdate(),interval -1 year) \u8868\u793a 2014-05-20\n-- \u5b57\u7b26\u4e32\u8f6c\u65e5\u671f\nselect str_to_date('2017-11-20', '%Y-%m-%d %H:%i:%s');\n-- \u65f6\u95f4\u8f6c\u5b57\u7b26\u4e32\nselect date_format(now(), '%Y-%m-%d');\n-- \u5b57\u7b26\u4e32\u8f6c\u65f6\u95f4\u6233\nselect unix_timestamp('2016-01-02');\n-- \u65f6\u95f4\u6233\u8f6c\u65f6\u95f4\nselect from_unixtime(1451997924);\n-- \u65f6\u95f4\u6233\u8f6c\u5b57\u7b26\u4e32\nselect from_unixtime(1451997924,'%Y-%d');\n-- \u65f6\u95f4\u8f6c\u65f6\u95f4\u6233\nselect unix_timestamp(now());\n\n-- \u67e5\u8be2\u524d\u4e00\u5929\u6570\u636e\nselect * from user_info where join_time BETWEEN date_sub(CURDATE(), INTERVAL 1 DAY) AND date_sub(DATE_FORMAT(NOW(), '%Y-%m-%d 23:59:59'),INTERVAL 1 DAY);\n-- \u4e0a\u5468\u4e00\nselect subdate(  date_add(subdate( date_add(curdate(), interval -1 day),date_format(date_add(curdate(), interval -1 day),'%w')-1), interval -2 day),date_format( date_add(subdate( date_add(curdate(), interval -1 day),date_format(date_add(curdate(), interval -1 day),'%w')-1), interval -2 day),'%w')-1);\n-- \u4e0a\u5468\u65e5\nselect date_add(subdate(  date_add(subdate( date_add(curdate(), interval -1 day),date_format(date_add(curdate(), interval -1 day),'%w')-1), interval -2 day),date_format( date_add(subdate( date_add(curdate(), interval -1 day),date_format(date_add(curdate(), interval -1 day),'%w')-1), interval -2 day),'%w')-1), interval 6 day);\n<\/code><\/pre>\n<p>\u539f\u6587\u8f6c\u81ea<br \/>\nhttps:\/\/www.cnblogs.com\/huangxiaoxue\/p\/8870839.html<\/p>\n","protected":false},"excerpt":{"rendered":"<p>select curdate(); &#8211;\u83b7\u53d6\u5f53\u524d\u65e5\u671f select last_day(curdate());  &hellip; <a href=\"https:\/\/www.cgh0610.cn\/?p=298\" class=\"more-link\">\u7ee7\u7eed\u9605\u8bfb<span class=\"screen-reader-text\">mysql\u5e38\u7528\u65e5\u671f\u3001\u65f6\u95f4\u67e5\u8be2<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"aside","meta":[],"categories":[39,12],"tags":[],"_links":{"self":[{"href":"https:\/\/www.cgh0610.cn\/index.php?rest_route=\/wp\/v2\/posts\/298"}],"collection":[{"href":"https:\/\/www.cgh0610.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.cgh0610.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.cgh0610.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.cgh0610.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=298"}],"version-history":[{"count":1,"href":"https:\/\/www.cgh0610.cn\/index.php?rest_route=\/wp\/v2\/posts\/298\/revisions"}],"predecessor-version":[{"id":299,"href":"https:\/\/www.cgh0610.cn\/index.php?rest_route=\/wp\/v2\/posts\/298\/revisions\/299"}],"wp:attachment":[{"href":"https:\/\/www.cgh0610.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=298"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.cgh0610.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=298"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.cgh0610.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=298"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}