[ ] (Wildcard - Character(s) to Match) (Transact-SQL)
SQL Server 2012
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.
The following example uses the [] operator to find the IDs and names of all Adventure Works employees who have addresses with a four-digit postal code.
USE AdventureWorks2012; 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]';
Here is the result set:
EmployeeID FirstName LastName PostalCode ---------- --------- --------- ---------- 290 Lynn Tsoflias 3000
