Test Boolean Function

Question

Dear All
How I Can test boolean function that return true or false.

Answer 1

Hi,
Write a Wrapper Function , that is, another function that is wrapped around your first fucntion, which you can call from SQL, and call it.
CREATE OR REPLACE FUNCTION check_mobile_varchar2 (p_mobile IN VARCHAR2)
RETURN  VARCHAR2
IS
    return_string   VARCHAR2 (5) := 'FALSE';
BEGIN
    IF  check_mobile (p_mobile)
    THEN
        return_string := 'TRUE';
    END IF;
    RETURN  return_string;
END  check_mobile_varchar2
/To test:
SELECT  txt
,       CHECK_MOBILE_VARCHAR2 (txt)    AS check_mobile
FROM    table_x
;This assumes you really want a function that returns a BOOLEAN, and therefore can't be used in SQL. A lot of folks just write functions that return 'TRUE' or 'FALSE' (or 'T' or 'F', 1 or 0) in the first place.
If check_mobile is in a package, check_mobile_varchar2 should be in the same package.
Edited by: Frank Kulash on Mar 13, 2011 11:46 AM
Added RETURN startement.