How to use GROUP BY to concatenate strings in SQL Server?

Question

How do I get:

id       Name       Value
1          A          4
1          B          8
2          C          9

to

id               


        

Answer 1

Eight years later... Microsoft SQL Server vNext Database Engine has finally enhanced Transact-SQL to directly support grouped string concatenation. The Community Technical Preview version 1.0 added the STRING_AGG function and CTP 1.1 added the WITHIN GROUP clause for the STRING_AGG function.

Reference: https://msdn.microsoft.com/en-us/library/mt775028.aspx