+203 THE QUALIFIED COLUMN NAME column-name WAS RESOLVED USING A NON-UNIQUE OR UNEXPOSED NAME
Explanation
The table designator selected to resolve a qualified
column name is one of the following:
- An unexposed name
- An exposed name that has an exposed duplicate in the same FROM clause
- An exposed name that has an unexposed duplicate which appears before the selected name in the ordered list of names to which the qualifier is compared
System action
DB2® uses the selected name to resolve the reference.
Programmer response
If DB2 did not resolve of the qualifier how you intended, rewrite the SQL statement and submit it again.
SQLSTATE
01552