Get list of all database users with specified role

Question

I want to get list of all database users with specified role. Role is a parameter for stored procedure or function.

Somethinf like a select statement with user name

Answer 1

just depending on how you want to pass the parameter...assuming you'll use the id of the role

declare @roleID int

select
    role_principal_id as roleID, 
    user_name(role_principal_id) as roleName, 
    member_principal_id as memberID,
    user_name(member_principal_id) as memberName 
from 
    sys.database_role_members
where 
    role_principal_id = @roleID