Cierń, próbowałem tej opcji, ale nie spowodowało to żadnego błędu.
CREATE OR REPLACE PROCEDURE updatetabble1 AS
BEGIN
MERGE
INTO Table1 DBC
USING ( Select ename from
(
Select ename
from
(
Select ename, column1||Column2||Column3 from table1
union
Select ename, column1||Column2||Column3 from table2
)
)
GROUP BY ename HAVING count(*) > 1
) TBL_MAIN
ON ( DBC.empname = TBL_MAIN.empname)
WHEN MATCHED THEN
UPDATE SET DBC.DATA_CHANGED = 'Y';
COMMIT;
END updatetabble1;