聯表update或者delete

UPDATE IslandMemberInfo a SET a.updtime=now(), a.pkResult=(select pkResult from 
                        (select * from Island) b where b.id=a.islandId and a.round=b.round)
                         where a.round=:round and a.pkResult=:init

 

DELETE t1,t2   FROM ActivityTicket t1 left join ActivitySendFlow t2 ON t1.actTicketId=t2.tckid
WHERE t1.templateCode in ('x','xx') and
(t1.memberId = 'null' or t1.memberId='')