Question

I have a table like you can see below

Table items

ID          Type               Sold (bit)
--------------------------------------------
1           Book                 1
2           Phone                0
3           TV                   1
4           TV                   1
5           TV                   1
6           TV                   0
7           Phone                1
8           Phone                0

I need to group by type, count it and count how many items are sold.
So I can get the result like you can see below

Phone 3; Sold 1
TV    4; Sold 3
Book  1; Sold 1

Answer 1

var query = from row in table
            group row.Sold by row.Type into g
            select new { Type = g.Key, Count = g.Count(), Sold = g.Count(s => s) };