Test the Boolean function
Dear allHow do I test a Boolean function that returns true or false.
Hello
Write a Wrapper function , in other words, another function that surrounds your first function that you can call from SQL and call him.
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 that you want a function that returns a BOOLEAN value and therefore cannot be used in SQL. Many people simply write functions that return to 'TRUE' or 'FALSE' (or ' t "or"F", 1 or 0) in the first place.
If check_mobile is in a package, check_mobile_varchar2 must be in the same package.
Published by: Frank Kulash, March 13, 2011 11:46
Added RETURN startement.
Tags: Database
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