1.修改时间的秒和微秒 create table a (Dtime datetime);insert into aselect '2013-08-30 17:59:35' union allselect '2013-09-01 17:59:35' union allselect '2013-09-02 17:59:35' union allselect '2013-09-03 18:59:35' select * from a update a set Dtime=dateadd(ss,(ran…