Re: Need Stored Procedure for case conversion
Posted in 1997
JB In answer to your question, it can be done but it is not elegant and rather inflexible in versions of informix prior to V7. In V7, I think you will find they have implemented a stored procedure for this, but since I do not know for sure, don't take my word on it. To to it yourself: You end up having to write a function to compare the current letter against the 26 lowercase letters: PROCEDURE change_case(ch CHAR) RETURNING CHAR; IF ch = 'a' THEN LET ch='A'; END IF IF ch = 'b' THEN LET ch ='B'; END IF RETURN ch; END PROCEDURE; PROCEDURE to_upper(str CHAR(50)) RETURNING CHAR(50); DEFINE strlen SMALLINT; LET strlen = length(str); IF strlen >= 1 THEN LET str[1] = change_case(str[1]); END IF IF strlen >= 2 THEN LET str[2] = change_case(str[2]); -- All the way to 50! END IF RETURN str; END PROCEDURE;