-416 AN OPERAND OF A SET OPERATOR CONTAINS A LONG STRING COLUMN

Explanation
  The UNION, EXCEPT, or INTERSECT set operator
that you specified in the SQL statement could not be performed because
one of the tables participating in the union contains a long string
column. The operands of a set operator that does not include the ALL
keyword cannot contain long string columns.

System action
  The statement cannot be processed.

Programmer response
  The implied function is not supported
by DB2®.

SQLSTATE
  42907