# -421 THE OPERANDS OF A SET OPERATOR DO NOT HAVE THE SAME NUMBER OF COLUMNS

#### Explanation

The operands of a set operator, such as UNION, EXCEPT, or INTERSECT, must have the same number of columns.

#### System action

The statement cannot be processed.

#### Programmer response

Correct the SQL statement so that there are exactly the same number of columns.

#### SQLSTATE

42826