ادغام سطر ها به صورت یک رشته

 DECLARE @combinedString VARCHAR(MAX)
SELECT @combinedString = COALESCE(@combinedString +', ','') + stringvalue
FROM t1

SELECT @combinedString as StringValue

SELECT STUFF( (
SELECT ','+CAST(Id AS VARCHAR(10))
FROM YourTable
FOR XML PATH('')),1,1,'')