How can I use SUM for bit columns?

Question

How can use the function SUM() for bit columns in T-SQL?

When I try do it as below:

SELECT SUM(bitColumn) FROM MyTable;

I get the e

Answer 1

SELECT SUM(CAST(bitColumn AS INT))
FROM dbo.MyTable

need to cast into number

or another solution -

SELECT COUNT(*)
FROM dbo.MyTable
WHERE bitColumn = 1