Function return boolean with combine query and validation

Question

Wondering how would you combine a query and the condition together...
Right now i have a computation that would do a single sql query.
and in my validation i would use a function return boolean call the result from the computation to do some if statements
wondering how would you combine the two in the validation? ( tried pasting both in the validation but it doesn't seem to work.)
Select count(NAME_ID)
FROM table
WHERE to_char(NAME_ID) = :P1_NAME_ID;
IF :P1_results = 1 THEN
RETURN TRUE;
END IF;
RETURN FALSE;

Answer 1

OK, then does this work for you as validation on your item; P1_NAME_ID ?
DECLARE
   l_rowcount   PLS_INTEGER;
BEGIN
   SELECT COUNT (name_id)
     INTO l_rowcount
     FROM my_table
    WHERE TO_CHAR (name_id) = :P1_NAME_ID;
   IF l_rowcount = 1
   THEN
      RETURN TRUE;
   ELSE
      RETURN FALSE;
   END IF;
END;Jeff