MERGE ERROR

Question

this migration problem :sqlserver to oracle
in this releated to merge statement
created the temp table -data are insert at the time of movement , in this table using Merge statement USING BOTH TABLE TMP SOME ONE IS BASE TABLE ANOTHER ONE IS TMP TABLE
table property NO PRIMARY KEY
IN THIS SUITUATION
ERROR: UNSTABLE SET OF TABLE ROW
BUT I USING DISTINCT KEYWORD REPEATLY SAME ERROR: UNSTABLE SET OF TABLE ROW
MERGE INTO EMP A
USING (SELECT * FROM SERVICE) SERVICE
ON ( IRD_ORDER_OU = IT_ORDER_OU
AND IRD_ORDER_NO = IT_ORDER_NO
AND IRD_REPAIRORDER_NO = IT_WORKORDER_NO
AND IT_GUID = v_GUID_TMP
AND IT_REF_DOC_TYPE = 'RO'
) -- IERA-711
WHEN MATCHED THEN UPDATE SET IT_PARTNO = IRD_PART_NO,
IT_PART_SERIALNO = IRD_SERIAL_NO;
JUST CONVERT MERGE TO UPDATE CORRECTLY EXECUTED

Answer 1

956403 wrote:
ERROR: UNSTABLE SET OF TABLE ROW
BUT I USING DISTINCT KEYWORD REPEATLY SAME ERROR: UNSTABLE SET OF TABLE ROWIt's not about selecting DISTINCT rows, it's about joining the two tables using an ON condition that ensures one row of the source merges with one row of the merging table.
If you get an unstable set of rows error, then it suggests that your joining condition is not being specific enough.