Extra numbers from String SQL

uExtractNumberFromString.sql

select uExtractNumberFromString(mobile) from customer_masterCREATE FUNCTION `uExtractNumberFromString`(in_string varchar(50)) RETURNS INT
NO SQL


BEGIN


DECLARE ctrNumber varchar(50);
DECLARE finNumber varchar(50) default ' ';
DECLARE sChar varchar(2);
DECLARE inti INTEGER default 1;


IF length(in_string) > 0 THEN


WHILE(inti <= length(in_string)) DO
    SET sChar= SUBSTRING(in_string,inti,1);
    SET ctrNumber= FIND_IN_SET(sChar,'0,1,2,3,4,5,6,7,8,9');


    IF ctrNumber > 0 THEN


       SET finNumber=CONCAT(finNumber,sChar);
    ELSE


       SET finNumber=CONCAT(finNumber,'');
    END IF;


    SET inti=inti+1;
END WHILE;
RETURN CAST(finNumber AS SIGNED INTEGER) ;
ELSE
  RETURN 0;
END IF;


END