我的查询结果中有多行:
例如,表“地址”:
Street | Number | City
----------------------
A1 | A2 | A3
B1 | B2 | B3
我真正想要的是:
Address1_Street | Address1_Number | Address1_City | Address2_Street | Address2_Number | Address2_City
------------------------------------------------------------------------------------------------------
A1 | A2 | A3 | B1 | B2 | B3
任何知道如何实现这一目标的人?
我现在已经设法达到这一点(对不起使用其他专栏,上面的一个是一个例子,但我猜你会明白这一点):
select distinct
a.ID,
a.Name,
ca1.NameLine1 as Address1_NameLine1,
ca2.NameLine1 as Address2_NameLine1
from
dbo.Accounts a,
dbo.Addresses ca1,
dbo.Addresses ca2
where
(a.ID = ca1.AccountID AND a.ID = ca2.AccountID)
AND (a.Name = 'TEST')
AND (ca1.ID <> ca2.ID)
但我仍然得到2行......其中Address1用Address2切换。谁知道如何只得到一个?谢谢!
答案 0 :(得分:5)
尝试:
select ID,
max(Name) Name,
max(case when rn=1 then NameLine1 end) Address1_NameLine1,
max(case when rn=2 then NameLine1 end) Address1_NameLine2
from
(select a.ID,
a.Name,
ca.NameLine1,
rank() over (partition by a.ID order by ca.ID) rn
from dbo.Accounts a
join dbo.Addresses ca on a.ID = ca.AccountID
where a.Name = 'TEST') sq
group by ID
答案 1 :(得分:1)
select address1.* ,address2.* from
Address address1 inner join on Address address2
on address1.userid=address2.userid
您可以根据数据选择内部或左侧连接。