functions problem

[d_hermanus]

Hi all,

I just can't seems to understand the mistake I've made with this function that I've
created. Please help

CREATE FUNCTION CHG_NULL (inDEC SMALLINT, outDec SMALLINT) RETURNS SMALLINT

BEGIN
IF inDEC = NULL THEN
RETURN outDEC;
ELSE
RETURN inDEC;
ENDIF;
END;

I've got this error msg.

MySQL said:

#1064 - You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'RETURN outDEC' at line 5

whats wrong?

Thanks,
Deddy