PLS-00633

Error: PLS-00633: RETURN statement in a pipelined function cannot contain an expression

Causa: A RETURN statement in a pipelined function contains an expression, which is not allowed. Pipelined functions must send back values to the caller by using the PIPE statement.

Acción: Remove the expression from the RETURN statement and use a PIPE statement to return values. Alternatively, convert the function into a non-pipelined function.