mysql 修改重复数据 isdel

update vouchers b ,(

select a.id from  vouchers a  where a.reason='XX' and a.id not in (

select minid from (

SELECT

min(id)minid,

userid

FROM

vouchers

WHERE

reason = 'XX'

GROUP BY

userid

) ss ) ) c set b.isdel=1 where b.id =c.id