SQL Server中通配符的使用示例

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;
GO
SELECT FirstName, LastName
FROM Person.Person
WHERE 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;
GO
SELECT FirstName, LastName
FROM Person.Person
WHERE 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;
GO
SELECT e.BusinessEntityID, p.FirstName, p.LastName, a.PostalCode
FROMHumanResources.EmployeeAS e
INNER JOIN Person.PersonAS pON e.BusinessEntityID= p.BusinessEntityID
INNER JOIN Person.BusinessEntityAddressAS eaON e.BusinessEntityID=ea.BusinessEntityID
INNER JOIN Person.AddressAS aON a.AddressID= ea.AddressID
WHERE 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 all
select *,’CN’from tbwherepatindex(‘%[吖-坐]%’,name)>0andpatindex(‘%[a-z]%’,name)=0
union all
select *,’Eng&CN’from tbwhere(patindex(‘%[吖-坐]%’,name)>0)andpatindex(‘%[a-z]%’,name)>0

结果集:

name
——————– ——
kevin Eng
刘 CN
kevin刘 Eng&CN

(3 row(s) affected)

       


数据运维技术 » SQL Server中通配符的使用示例