我可以使用FOR XML
PATH
来连接多行以在一行中生成逗号分隔值,如下所示:
TMonth Location Degrees
Jan Tokyo 7.0
Jan New York -0.2
Jan Berlin -0.9
Jan London 3.9
Feb Tokyo 6.9
Feb New York 0.8
Feb Berlin 0.6
Feb London 4.2
SELECT t.Location, STUFF(
(SELECT ',' + convert(varchar(5), s.Degrees)
FROM MonthlyTemps s
WHERE s.Location = t.Location
--FOR XML PATH('')),1,1,'') AS CSV
FOR XML PATH(''), TYPE).value('.', 'VARCHAR(MAX)'),1,1,'') AS CSV
FROM MonthlyTemps AS t
GROUP BY t.Location
结果:
Location CSV
Berlin -0.9,0.6
London 3.9,4.2
New York -0.2,0.8
Tokyo 7.0,6.9
现在,我确实需要结果(即“主要”组连接到“子组”的前面):
CSV
Berlin,-0.9,0.6
London,3.9,4.2
New York,-0.2,0.8
Tokyo,7.0,6.9
我尝试过几个不同的查询无济于事。我知道它就在那里盯着我,但我需要一双额外的眼睛来帮助我。任何帮助都会非常感激!
答案 0 :(得分:0)
使用字符串连接和子查询将两列与','
连接起来。希望这项工作。
select Location + ',' + aa as 'CSV' from
(
SELECT t.Location, STUFF(
(SELECT ',' + convert(varchar(5), s.Degrees) as aa
FROM MonthlyTemps s
WHERE s.Location = t.Location
--FOR XML PATH('')),1,1,'') AS CSV
FOR XML PATH(''), TYPE).value('.', 'VARCHAR(MAX)'),1,1,'') AS CSV
FROM MonthlyTemps AS t
GROUP BY t.Location
) as temp