我是SQL Server的新手,并尝试过几种从互联网上建议的技术,比如使用临时变量,XML路径,COALESCE
等,但所有这些都不符合我的要求。
我正在使用Toad for SQL Server 5.5来创建SQL脚本,而我用来查询DB服务器的帐户只能获得READ访问权限。因此,不能使用我相信的CREATE VIEW
声明。
表名:Customer
ServerName Country contact
---------- ------- -------------
srv1 SG srv1_contact1
srv1 SG srv1_contact2
srv1 SG srv1_contact3
srv2 HK srv2_contact1
srv2 HK srv2_contact2
srv3 JP srv3_contact1
srv3 JP srv3_contact2
srv3 JP srv3_contact3
srv4 KR srv4_contact1
预期产出:
ServerName Country contact
---------- ------- -------------------------------------------
srv1 SG srv1_contact1; srv1_contact2; srv1_contact3
srv2 HK srv2_contact1; srv2_contact2
srv3 JP srv3_contact1; srv3_contact2; srv3_contact3
srv4 KR srv4_contact1
答案 0 :(得分:7)
SELECT ServerName, Country, contact = STUFF((SELECT '; '
+ ic.contact FROM dbo.Customer AS ic
WHERE ic.ServerName = c.ServerName AND ic.Country = c.Country
FOR XML PATH(''), TYPE).value('.','nvarchar(max)'), 1, 2, '')
FROM dbo.Customer AS c
GROUP BY ServerName, Country
ORDER BY ServerName;