Percentage sign in MySql
mysql
Solution
Why don't you try it yourself and see? At any rate, here are the docs you were looking for:
With LIKE you can use the following two wildcard characters in the pattern.
Character Description
% Matches any number of characters, even zero characters
_ Matches exactly one character
http://dev.mysql.com/doc/refman/5.6/en/string-comparison-functions.html#operator_like
Problem
Does it also match empty string, or only non-empty strings? I have been trying to find a reference unsuccesfully.