Is it possible to COUNT the CONDITION and including NULL as well as the other values as 0?

Question

I have a problem. It includes the condition that to COUNT the rows where its status = 1 (GROUP BY name).

However, the result should include the rows WHERE those are not = 1 and NULL. And they are counted as 0.

I have tried cte, CASE WHEN, WHERE status = 1 or status IS NULL. It does include null as 0, but there are name containing 1 and 0 or only containing 0.

If I use WHERE status IS NULL OR status=1, the name with status 0 is not counted. If I use CASE WHEN status IS NULL THEN 0 WHEN status IS 0 THEN 0 WHEN status = 1 THEN COUNT(DISTINCT name) Then the name containing 1 AND 0 will be counted as 0.

Answer 1

You have to use CASE to get a 1 on the rows you want to count and 0 otherwise, then you have to SUM those values:

SELECT name, 
       SUM(CASE WHEN status=1 THEN 1 ELSE 0 END) as status_count
FROM table
GROUP BY name