Question

我正在使用MS Sql server 2008 R2。我有一个查询，给我这样的输出

Col1....Col2
CV1.....AV1
CV1.....AV2
CV2.....AV3
CV2.....AV4

查询

select Tab1.Col1, Tab2.Col2 
from Table1 Tab1 
JOIN Table2 Tab2 on Tab1.PKID = Tab2.FKID

我想要的是Col1和Col2中每个不同值的一行所有与col1相关的值与逗号或管道分隔符

Col1....Col2
CV1.....AV1,AV2
CV2.....AV3,AV4

有人可以帮我吗？

基本上我需要像my sql

中可用的group_concat之类的东西

Answer 1

CREATE TABLE a(
  Col1 varchar(50),
  Col2 varchar(20));   

INSERT INTO a (Col1,Col2) values ('CV1','AV1');
INSERT INTO a (Col1,Col2) values ('CV1','AV2');
INSERT INTO a (Col1,Col2) values ('CV2','AV3');
INSERT INTO a (Col1,Col2) values ('CV2','AV4');   

 with t as (SELECT Col1,(CAST(Col2 AS nvarchar (12))) as col2 from a )
    Select distinct T2.Col1,
                   substring((Select ','  +   T1.col2  AS [text()]
                    From t T1
                    Where T1.Col1 = T2.Col1
                    ORDER BY T1.Col1
                    For XML PATH ('')),2, 100) [col2]
             From t T2

尝试此查询。我在sql server中这样做。检查sqlfidddle

http://sqlfiddle.com/#!3/7ab28/1

SQL在一行中获取多个列的值

1 个答案: