Sql function remove numeric characters from column example

By Hardik Savani | March 12, 2016 | | 651 Viewer | Category : PHP MySql SQL MSSQL


Share this post:

Mysql custom fucntion is a very prety and intresting concept. In this posts i want to create one custom mysql function for remove numeric characters from table field value. this function through you can also remove numeric characters from string in mysql. in following sql query fire in your mysql or mssql database and check how it works. So, lets create function and how to use in select statement in sql query.

Create removeNumber function:

DROP FUNCTION IF EXISTS removeNumber;

DELIMITER |

CREATE FUNCTION removeNumber( str CHAR(32) ) RETURNS CHAR(16)

BEGIN

DECLARE i_val, len SMALLINT DEFAULT 1;

DECLARE ret CHAR(32) DEFAULT '';

DECLARE c CHAR(1);

SET len = CHAR_LENGTH( str );

REPEAT

BEGIN

SET c = MID( str, i_val, 1 );

IF c REGEXP '[[:alpha:]]' THEN

SET ret=CONCAT(ret,c);

END IF;

SET i_val = i_val + 1;

END;

UNTIL i_val > len END REPEAT;

RETURN ret;

END |

DELIMITER ;

Use With Select Query:

SELECT removeNumber(users.name) FROM `users`