Removing non-alphaNumerics in MySQL

Question

Do you know any easy way to remove (or replace) all non alphanumeric characters from varchar variable in Mysql?

something like String\'s replaceAll(\"[^a-zA-Z0-9]\",

Answer 1

Since MySQL 8.0 you can use regular expression to remove non alphanumeric characters from a variable. There is method REGEXP_REPLACE

SELECT REGEXP_REPLACE(@variable, '[^0-9a-zA-Z ]', '')

or

SET @variable = REGEXP_REPLACE(@variable, '[^0-9a-zA-Z ]', '')