Output a comma-separated list in a column in SQL Server [duplicate]

Answer 1

In SQL Server you can use FOR XML PATH:

select distinct a,
  stuff(
  (
    select ','+ cast(b as varchar(10)) 
    from table1 t2 
    where t1.a = t2.a for XML path('')
  ),1,1,'') ListOfB
from table1 t1

See SQL Fiddle with Demo