DB2 删除表中业务重复数据
DELETEFROM hnjavadb.T_BPM_PERM_OPTWHERE T_ID IN ( SELECT T_ID FROM hnjavadb.T_BPM_PERM_OPT o , ( SELECT * FROM ( SELECT BUKRS, PROCID , TASKID, ROLEID, TASKBUKRS, COUNT(T_ID) AS NUMBER, MIN(T_ID) AS minID FROM hnjavadb.T_BPM_PERM_OPT GROUP BY BUKRS, PROCID , TASKID, ROLEID, TASKBUKRS HAVING COUNT(T_ID) >1 ORDER BY NUMBER DESC)) AS b WHERE o.bukrs = b.bukrs AND o.PROCID = b.PROCID AND o.TASKID = b.TASKID AND o.ROLEID = b.ROLEID AND o.TASKBUKRS = b.TASKBUKRS AND o.T_ID > b.minID)
