DELETE Sys_RlReport WHERE Id NOT IN (SELECT MIN(Id) FROM Sys_RlReport GROUP BY employeename,bus) order BY employeename,bus)
多字段重复,通过与最小化Id比较
DELETE Sys_RlReport WHERE Id NOT IN (SELECT MIN(Id) FROM Sys_RlReport GROUP BY employeename,bus) order BY employeename,bus)
多字段重复,通过与最小化Id比较