Count NULL Values from multiple columns with SQL

Question

I have 3 columns let say A, B, and C. I need to count the NULL values in each column.

For example:

Answer 1

select
    sum(case when a is null then 1 else 0 end) as a_null_count,
    sum(case when b is null then 1 else 0 end) as b_null_count,
    sum(case when c is null then 1 else 0 end) as c_null_count
from table