Declaring and using MySQL varchar variables

Question

I\'m trying to do some simple manipulations with variables in MySQL 5.0 but I can\'t quite get it to work. I\'ve seen many (very!) different syntaxen for DECLARE/SET, I\'m not

Answer 1

try this:

declare @foo    varchar(7),
        @oldFoo varchar(7)

set @foo = '138'
set @oldFoo = '0' + @foo