SQL Server

How to Have Multiple Counts in SQL Server

To do multiple counts in one query in SQL Server, you can combine sum() with the CASE statement:

select
  count(1), -- count all products
  sum(case when name = 'Table' then 1 else 0 end), -- count all tables
  sum(case when category = 5 then 1 else 0 end) -- count all category 5 products
from products;