% (Wildcard - Character(s) to Match) (Transact-SQL)
Matches any string of zero or more characters. This wildcard character can be used as either a prefix or a suffix. For more information, see Pattern Matching in Search Conditions.
The following example returns all the first names of people in the Contact table of AdventureWorks that start with Dan.
USE AdventureWorks; GO SELECT FirstName, LastName FROM Person.Contact WHERE FirstName LIKE 'Dan%'; GO