在某些情况下熟悉SQL Server 通配符的使用可以帮助我们简单的解决很多问题。

--使用_运算符查找Person表中以an结尾的三字母名字USEAdventureWorks2012;GOSELECT FirstName, LastNameFROM Person.PersonWHERE FirstName LIKE'_an'ORDER BY FirstName; ---使用[^]运算符在Contact表中查找所有名字以Al开头且第三个字母不是字母a的人USEAdventureWorks2012;GOSELECT FirstName, LastNameFROM Person.PersonWHERE FirstName LIKE'Al[^a]%'ORDER BY FirstName; ---使用[]运算符查找其地址中有四位邮政编码的所有Adventure Works雇员的ID和姓名USEAdventureWorks2012;GOSELECT e.BusinessEntityID, p.FirstName, p.LastName, a.PostalCodeFROMHumanResources.EmployeeAS eINNER JOIN Person.PersonAS pON e.BusinessEntityID= p.BusinessEntityIDINNER JOIN Person.BusinessEntityAddressAS eaON e.BusinessEntityID=ea.BusinessEntityIDINNER JOIN Person.AddressAS aON a.AddressID= ea.AddressIDWHERE a.PostalCodeLIKE'[0-9][0-9][0-9][0-9]';

结果集：

EmployeeID FirstName LastName PostalCode---------- --------- --------- ----------290 Lynn Tsoflias 3000--将一张表中名字为中英文的区分出来（借鉴论坛中的代码）create table tb(namenvarchar(20)) insert into tbvalues('kevin')insert into tbvalues('kevin刘')insert into tbvalues('刘') select *,'Eng'from tbwherepatindex('%[a-z]%',name)>0and(patindex('%[吖-坐]%',name)=0)union allselect *,'CN'from tbwherepatindex('%[吖-坐]%',name)>0andpatindex('%[a-z]%',name)=0union all select *,'Eng&CN'from tbwhere(patindex('%[吖-坐]%',name)>0)andpatindex('%[a-z]%',name)>0

结果集：

name -------------------- ------kevin Eng刘 CNkevin刘 Eng&CN (3 row(s) affected)