Question

任何人都可以帮助我将sql表列转换为逗号分隔行在Azure SQL中我已经尝试过此代码，但收到无法转换为的错误 varchar请建议

DECLARE @Country TABLE (id INT, [Name] Varchar(30) )

INSERT INTO @Country VALUES (1,'India')
INSERT INTO @Country VALUES (2,'USA')
INSERT INTO @Country VALUES (3,'Japan')
INSERT INTO @Country VALUES (4,'China')
INSERT INTO @Country VALUES (5,'Switzerland')

SELECT STUFF( -- Remove first comma
(SELECT  ', ' + ID FROM -- create comma separated values
(SELECT ID FROM @Country --Your query here
) AS T FOR XML PATH('')
)
,1,1,'') AS [Name]

Answer 1

您需要CAST整数

SELECT  ', ' + CAST(ID as nvarchar(max)) FROM

Answer 2

您可以使用STRING_AGG：

SELECT STRING_AGG(ID, ', ') FROM @Country

db<>fiddle demo

当没有GROUP_CONCAT等效项时，XML + STUFF是旧方法。

如何在Azure sql中将整数列转换为逗号分隔的行

2 个答案: