plsql查询、删除重复数据

查询不重复数据

SELECT *  FROM jnbus_zzfc_mx  j WHERE j.ROWID IN (SELECT MAX(ROWID) FROM jnbus_zzfc_mx  t GROUP BY t.driverid,leavetime)

 删除重复数据

DELETE FROM jnbus_zzfc_mx  j WHERE j.ROWID NOT IN (SELECT MAX(ROWID) FROM jnbus_zzfc_mx  t GROUP BY t.driverid,leavetime)