生成随机数
** update tableName set col=(1+abs(checksum(newid()))%2)**
生成随机时间
** declare @Date_start datetime
declare @Date_end datetime
set @Date_start= ‘2018-12-11’
set @Date_end=‘2019-1-1’
update [ATT_OFFICE_BUILD] set EFF_DATE=dateadd(minute,abs(checksum(newid()))%(datediff(minute,@Date_start,@Date_end)+1),@Date_start) **