[ ] (Wildcard - Character(s) to Match) (Transact-SQL)
SQL Server 2008 R2
Matches any single character within the specified range or set that is specified between the brackets. These wildcard characters can be used in string comparisons that involve pattern matching, such as LIKE and PATINDEX. For more information, see Pattern Matching in Search Conditions.
The following example uses the [] operator to return all Adventure Works employees who have addresses with a four-digit postal code.
USE AdventureWorks2008R2; GO SELECT e.BusinessEntityID, p.FirstName, p.LastName, a.PostalCode FROM HumanResources.Employee AS e INNER JOIN Person.Person AS p ON e.BusinessEntityID = p.BusinessEntityID INNER JOIN Person.BusinessEntityAddress AS ea ON e.BusinessEntityID = ea.BusinessEntityID INNER JOIN Person.Address AS a ON a.AddressID = ea.AddressID WHERE a.PostalCode LIKE '[0-9][0-9][0-9][0-9]'; GO
Here is the result set:
EmployeeID FirstName LastName PostalCode ---------- --------- --------- ---------- 290 Lynn Tsoflias 3000
