Question

I am trying to run this query, but it seems like it’s not formatting the numbers properly after doing a mathematical calculation. The scale should be at 2, but it won’t display as it should.

SELECT 30 / 60 as Diff FROM Table

This returns as 0

SELECT Convert( Numeric(8,2), 30 / 60 ) as Diff FROM Table

This returns as 0.00

How do I get this to return 0.50 as needed?

Answer 1

You can try the following and there are few ways to achieve it. Using a variable, or just performing CAST, CONVERT on the fields itself.

 SELECT (CAST(30 AS DECIMAL(8,2)) / CAST(60 AS DECIMAL(8,2))) as Diff FROM Table

 SELECT (CAST(30/60) AS DECIMAL(8,2)) as Diff FROM Table

 SELECT (30/60.0) as Diff FROM Table;

 SELECT CONVERT(DECIMAL(8,2), 30/60.0) as Diff FROM Table

Please take a look at this MSDN article for further reference: