-788 THE SAME ROW OF TARGET TABLE table-name WAS IDENTIFIED MORE THAN ONCE FOR AN UPDATE, DELETE, OR CHANGE OPERATION OF THE MERGE STATEMENT
Explanation
The ON search-condition of the MERGE statement matched a single row from the target table with multiple rows of the source table-reference. This could result in the target row being operated on more than once with an update or delete operation, and is not allowed.
- table-name
- The name of the target table of the MERGE statement.
System action
The statement cannot be processed.
Programmer response
Take one of the following actions:
- Correct the search condition to ensure that each row in the target table matches only one row in the source table.
- Aggregate the rows in the source table that match the row in the target table by using GROUP BY functions.
- Use the ROW_NUMBER() OLAP expression to generate unique rows.
SQLSTATE
21506
