3 回答

TA貢獻1820條經(jīng)驗 獲得超2個贊
您不能確定在子查詢中沒有order by語句的情況下串聯(lián)的字符串的順序。該.value('.', 'varchar(max)')部分用于處理Label包含XML不友好字符(如)的情況&。
declare @T table(Response_ID int, Label varchar(50))
insert into @T values
(12147, 'It was not clear'),
(12458, 'Did not Undersstand'),
(12458, 'Was not resolved'),
(12458, 'Did not communicate'),
(12586, 'Spoke too fast'),
(12587, 'Too slow')
select T1.Response_ID,
stuff((select ','+T2.Label
from @T as T2
where T1.Response_ID = T2.Response_ID
for xml path(''), type).value('.', 'varchar(max)'), 1, 1, '') as Label
from @T as T1
group by T1.Response_ID

TA貢獻1801條經(jīng)驗 獲得超16個贊
DECLARE @Results TABLE(Response_ID INT, Label VARCHAR(80));
INSERT @Results(Response_ID, Label)
SELECT 12147,'It was not clear'
UNION SELECT 12458,'Did not Undersstand'
UNION SELECT 12458,'Was not resolved'
UNION SELECT 12458,'Did not communicate'
UNION SELECT 12586,'Spoke too fast'
UNION SELECT 12587,'Too slow';
WITH x AS
(
SELECT Response_ID FROM @Results
GROUP BY Response_ID
)
SELECT x.Response_ID, Label = STUFF((SELECT ',' + Label
FROM @Results WHERE Response_ID = x.Response_ID
FOR XML PATH('')), 1, 1, '')
FROM x;
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