-783 SELECT LIST FOR CURSOR cursor-name IN FOR STATEMENT IS NOT VALID. COLUMN column-name IS NOT UNIQUE
Explanation
The SELECT list in the FOR statement must contain
unique column names. The SELECT list specified either contains duplicate
column names or unnamed expressions.
- If two column names are the same, the column name is column-name.
- If the problem is the result of unnamed expressions then *N is returned for column-name.
System action
The statement cannot be processed.
Programmer response
Specify unique column names in the SELECT list specified in the FOR statement.
SQLSTATE
42738