13、SECOND(time) 1 2 SELECT SECOND(‘11:22:33') SELECT SECOND(‘2016-01-16 11:44:22') 1 2 -> 33 -> 22 返回該time的minute值,值范圍(0-59) 14、PERIOD_ADD(month,add) 1 2 3 SELECT PERIOD_ADD(1601,2) SELECT PERIOD_ADD(191602,3) SELECT PERIOD_ADD(191602,-3) 1 2 3 ->...
www.dbjr.com.cn/article/1358...htm 2025-6-2