Trying to get the result in single row using sql?

Question

I\'m trying to display all the employee id\'s

i need the result like

emp_id

10,11,12,13,14,15..,...

when tried

Answer 1

try this

 declare @empid nvarchar(500)=''
    select @empid=@empid+Emp_id + ',' from tblemployee
    select substring(@empid,0,len(@empid)-1)