Question

I have searched for solution, but nothing similar.
My problem is that I want to select data from database, group it by UserID and Count it by Status id

Users

UserID
Name

Appointments

UserID
ClientID
Status
StartDate

Status can be active=1, canceled=2, done=3

This is how I will display results.

Thanks in advance.

Answer 1

In you question you say you want to group on UserId, but in the output you show Name. This query will group on both. You might want to adjust it to your needs.

from u in tblUsers
join a in tblAppointments on u.UserID equals a.UserID
group a by new { u.UserID, u.Name } into g
select new
{
    Name     = g.Key.Name,
    Active   = g.Count (x => x.Status == 1),
    Canceled = g.Count (x => x.Status == 2),
    Done     = g.Count (x => x.Status == 3)
}

(this will handle the case if two users have the same name though)