Hello Javad, On 9/2/2011 05:51, javad bakhshi wrote:
Hi again,Thanks for the tips. My problem is: I have a Function in Mysql that has some arguments in the signature as follows: CREATE FUNCTION Myfunction( type TINYINT, sec SMALLINT, vid INTEGER, way TINYINT, quid INTEGER, day TINYINT ) RETURNS CHAR(50) BEGIN DECLARE result CHAR(50); DECLARE Temp DECIMAL(9,1); SELECT Table1( vid, day, way) INTO Temp; IF Temp IS NOT NULL THEN SELECT CONCAT_WS(',',sec, 0, quid, Temp) into result; ELSE SELECT CONCAT_WS(',',sec, 0, quid, 0 ) into result; END IF; RETURN result; END; The problem seems to be solved by using CHAR but I really want to have a sequence of Integers as the result not CHAR. The reason that I dont use a table to insert the result into it and retrieve it later is that this process takes more time that It should. Any thoughts?
Actually, that's not 'the problem' you are attempting to solve at all. That is an attempt at a 'solution' to the problem.
If I stare very hard into my crystal ball and use all of my psychic-SQL-fu, all I can tell is that you are attempting to build some kind of comma-separated value. However, why you need this list and what it is trying to solve is beyond me.
Please step back from the SQL end of things for a second and talk to us about the actual problem you are trying to solve. Are you generating nuclear launch codes? Are you indexing someone's genome? Are you trying to build a web page? All of this SQL coding is designed to be a single step in some larger process. If you share that larger purpose with us, we may be able to suggest a more efficient approach than arrays to solve your larger problem.
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