SqlServer 删除表中重复数据，uuid 最小的一条

select * from A where StudentId in (

SELECT StudentId FROM A  WHERE CheckTime > '2020-12-22' AND CheckState = 'extractfail' GROUP BY StudentId,Author,Title HAVING COUNT(0) > 1)

and CheckId not in (

select min(convert(varchar(40), CheckId)) from A  WHERE CheckTime > '2020-12-22' AND CheckState = 'extractfail' group by StudentId,Author,Title HAVING COUNT(0) > 1

) and CheckTime > '2020-12-22' AND CheckState = 'extractfail'

#注意这里的

min(convert(varchar(40), CheckId)) 需要类型转换后才可用min 直接 min(CheckId) 会提示类型uuid 不支持min 函数