-20258 INVALID USE OF INPUT SEQUENCE ORDERING

Explanation
The ORDER BY clause specifies INPUT SEQUENCE, and the FROM clause of the
fullselect does not specify an INSERT or MERGE statement. If the input data
is not specified using a VALUES clause, or a fullselect with an ORDER BY clause
on the outermost fullselect, then the ORDER BY INPUT SEQUENCE clause has no
effect.

System action
The statement cannot be processed.

Programmer response
Specify a valid sort key or ensure that the input to the INSERT is a VALUES
clause or an ordered fullselect.

SQLSTATE
428G4