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Full Discussion: Best match query
Top Forums Programming Best match query Post 302981351 by yahyaaa on Sunday 11th of September 2016 04:38:07 AM
Old 09-11-2016
I tried the below precedure... but keep getting errors...


Code:
delimiter //

CREATE FUNCTION BestMatch (msisdn INT)
  RETURNS FLOAT(9,3)

BEGIN

    DECLARE var INT(6);
    DECLARE s FLOAT(9,3);

    DECLARE msisdn_substr3 VARCHAR(16);
    DECLARE msisdn_substr4 VARCHAR(16);
    DECLARE msisdn_substr5 VARCHAR(16);
    DECLARE msisdn_substr6 VARCHAR(16);
    DECLARE msisdn_substr7 VARCHAR(16);
    DECLARE msisdn_substr8 VARCHAR(16);
    DECLARE msisdn_substr9 VARCHAR(16);
    DECLARE msisdn_substr10 VARCHAR(16);
    DECLARE msisdn_substr11 VARCHAR(16);
    DECLARE msisdn_substr12 VARCHAR(16);
    DECLARE msisdn_substr13 VARCHAR(16);
    DECLARE msisdn_substr14 VARCHAR(16);

SET var = (SELECT count(*) FROM rates WHERE prefix = 'msisdn_substr8');

IF var = 1 THEN
    SET s = (SELECT price FROM rates WHERE prefix = 'msisdn_substr8');
END IF ;

IF var > 1 THEN
    SET msisdn_substr9 = SUBSTRING ( msisdn ,1 , 9 )  ;
    SET var = (SELECT count(*) FROM rates WHERE prefix = 'msisdn_substr9');

    if var = 1 then
    SET s = (SELECT price FROM rates WHERE prefix = 'msisdn_substr9');
    end if;

    if var = 0 then
    SET s = (SELECT price FROM rates WHERE prefix = 'msisdn_substr8');
    end if;

    SET msisdn_substr10 = SUBSTRING ( msisdn ,1 , 10 )  ;
    SET var = (SELECT count(*) FROM rates WHERE prefix = 'msisdn_substr10');

    if var = 1 then
    SET s = (SELECT price FROM rates WHERE prefix = 'msisdn_substr10');
    end if;

    if var = 0 then
    SET s = (SELECT price FROM rates WHERE prefix = 'msisdn_substr9');
    end if;

    SET msisdn_substr11 = SUBSTRING ( msisdn ,1 , 11 )  ;
    SET var = (SELECT count(*) FROM rates WHERE prefix = 'msisdn_substr11');

    if var = 1 then
    SET s = (SELECT price FROM rates WHERE prefix = 'msisdn_substr11');
    end if;

    if var = 0 then
    SET s = (SELECT price FROM rates WHERE prefix = 'msisdn_substr10');
    end if;

    SET msisdn_substr12 = SUBSTRING ( msisdn ,1 , 12 )  ;
    SET var = (SELECT count(*) FROM rates WHERE prefix = 'msisdn_substr12');

    if var = 1 then
    SET s = (SELECT price FROM rates WHERE prefix = 'msisdn_substr12');
    end if;

    if var = 0 then
    SET s = (SELECT price FROM rates WHERE prefix = 'msisdn_substr11');
    end if;

    SET msisdn_substr13 = SUBSTRING ( msisdn ,1 , 13 )  ;
    SET var = (SELECT count(*) FROM rates WHERE prefix = 'msisdn_substr13');

    if var = 1 then
    SET s = (SELECT price FROM rates WHERE prefix = 'msisdn_substr13');
    end if;

    if var = 0 then
    SET s = (SELECT price FROM rates WHERE prefix = 'msisdn_substr12');
    end if;

    SET msisdn_substr14 = SUBSTRING ( msisdn ,1 , 14 )  ;
    SET var = (SELECT count(*) FROM rates WHERE prefix = 'msisdn_substr14');

    if var = 1 then
    SET s = (SELECT price FROM rates WHERE prefix = 'msisdn_substr14');
    end if;

    if var = 0 then
    SET s = (SELECT price FROM rates WHERE prefix = 'msisdn_substr13');
    end if;

END IF;

IF var = 0 THEN
    SET msisdn_substr7 = SUBSTRING ( msisdn ,1 , 7 )  ;
    SET var = (SELECT count(*) FROM rates WHERE prefix = 'msisdn_substr7');

    if var = 1 then
    SET s = (SELECT price FROM rates WHERE prefix = 'msisdn_substr10');
    end if;

    SET msisdn_substr6 = SUBSTRING ( msisdn ,1 , 6 )  ;
    SET var = (SELECT count(*) FROM rates WHERE prefix = 'msisdn_substr6');

    if var = 1 then
    SET s = (SELECT price FROM rates WHERE prefix = 'msisdn_substr6');
    end if;

    SET msisdn_substr5 = SUBSTRING ( msisdn ,1 , 5 )  ;
    SET var = (SELECT count(*) FROM rates WHERE prefix = 'msisdn_substr5');

    if var = 1 then
    SET s = (SELECT price FROM rates WHERE prefix = 'msisdn_substr5');
    end if;

    SET msisdn_substr4 = SUBSTRING ( msisdn ,1 , 4 )  ;
    SET var = (SELECT count(*) FROM rates WHERE prefix = 'msisdn_substr4');

    if var = 1 then
    SET s = (SELECT price FROM rates WHERE prefix = 'msisdn_substr4');
    end if;

    SET msisdn_substr3 = SUBSTRING ( msisdn ,1 , 3 )  ;
    SET var = (SELECT count(*) FROM rates WHERE prefix = 'msisdn_substr3');

    if var = 1 then
    SET s = (SELECT price FROM rates WHERE prefix = 'msisdn_substr3');
    end if;

END IF;

    RETURN s;

  END //

DELIMITER ;


can you help ?

one IF condition is met, I want to set the variable s and then leave procedure..
how can i exit the procedure once s varable is set ? IF condition is met
Thanks


Moderator's Comments:
Mod Comment Please use CODE tags correctly as required by forum rules!

Last edited by yahyaaa; 09-11-2016 at 07:57 AM.. Reason: corrected CODE tags.
 

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