MySQL REGEXP - Removing white space and non-numeric characters

Question

I want to do a search in a MySQL database for phone numbers.

At present with this query:

SELECT person FROM people WHERE phone_number RLIKE \'1234567         


        

Answer 1

i did a function that returns all numbers only.. then i called the function by

SELECT person FROM people WHERE returnNumericOnly(phone_number) = '123456789'

my function is like this:

DELIMITER $$

USE [tablename]$$

DROP FUNCTION IF EXISTS `returnNumericOnly`$$

CREATE DEFINER=`root`@`localhost` FUNCTION `returnNumericOnly`(str VARCHAR(1000)) RETURNS VARCHAR(1000) CHARSET latin1
DETERMINISTIC
BEGIN
  DECLARE counter INT DEFAULT 0;
  DECLARE strLength INT DEFAULT 0;
  DECLARE strChar VARCHAR(1000) DEFAULT '' ;
  DECLARE retVal VARCHAR(1000) DEFAULT '';

  SET strLength = LENGTH(str);

  WHILE strLength > 0 DO
    SET counter = counter+1;
    SET strChar = SUBSTRING(str,counter,1);
    IF strChar REGEXP('[0-9]+') = 1
      THEN SET retVal = CONCAT(retVal,strChar);
    END IF;
    SET strLength = strLength -1;
    SET strChar = NULL;
  END WHILE;
RETURN retVal;
END $$

DELIMITER ;