Sql 基于两列将多行变为单行
我的问题:Sql 基于两列将多行变为单行,sql,sql-server,sql-server-2008,sql-server-2008-r2,business-intelligence,Sql,Sql Server,Sql Server 2008,Sql Server 2008 R2,Business Intelligence,我的问题: VALUES: **TABLE A** ID Number Code ABC99 1 XYZ0 ABC99 1 XyZ1 ABC99 2 XZY2 ABC99 3 XYZ1 ABC99 3 XwZ4 DEF88 5 QPR1 DEF88 5 QPR2 DEF
VALUES: **TABLE A**
ID Number Code
ABC99 1 XYZ0
ABC99 1 XyZ1
ABC99 2 XZY2
ABC99 3 XYZ1
ABC99 3 XwZ4
DEF88 5 QPR1
DEF88 5 QPR2
DEF88 6 QPS1
所需输出:ID应该是不同的,并连接相应的数字和代码
输出:
ID Number Code
ABC99 1 XYZ0,XyZ1
ABC99 2 XZY2
ABC99 3 XYZ1,XwZ4
DEF88 5 QPR1,QPR2
DEF88 6 QPS1
输出:ID与一个唯一的数字匹配,并将多行(代码)转换为一行,并用逗号分隔(无论有多少行)。重复:有效。谢谢你,古尔夫
declare @t table (
ID varchar(10),
Number int,
Code varchar(10)
)
insert into @t values
('ABC99', 1, 'XYZ0'),
('ABC99', 1, 'XyZ1'),
('ABC99', 2, 'XZY2'),
('ABC99', 3, 'XYZ1'),
('ABC99', 3, 'XwZ4'),
('DEF88', 5, 'QPR1'),
('DEF88', 5, 'QPR2'),
('DEF88', 6, 'QPS1');
select
ID, Number,
stuff((select ',' + Code from @t b
where a.ID = b.ID
and a.Number = b.Number
for XML PATH('')
),1,1,'') Codes
from @t a
group by ID, Number;