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1.求两个时间的差(天数) mysql : to_days 距离公元0年的天数 select TO_DAYS('2017-10-18 00:00:00'),TO_DAYS(NOW()), (TO_DAYS('2017-10-18 00:00:00')-TO_DAYS(NOW())) java Date e = ymd.parse(expireTime); Date now = new Date(); double e1 = e.getTime(); double e2 = now.getTim…
to_days() Given a date date, returns a day number (the number of days since year 0). 给定一个date 日期,返回天数 Create Table: CREATE TABLE `ClientActionTrack` ( `sn` bigint(20) NOT NULL AUTO_INCREMENT, `clientSn` int(11) DEFAULT NULL, `ip` varchar(32) DEFAULT…
1. [Err] 1055 - Expression #2 of SELECT list is not in GROUP BY clause and contains nonaggregated column 'zjh.student1.name' which is not functionally dependent on columns in GROUP BY clause; this is incompatible with sql_mode=only_full_group_by only…