SQL does take advantage of math coprocessors, that's what float/real are for. The fixed precision maths used by decimal has a different advantage: by rounding in a very specific way,...

It's a recursive CTE (note how the second part of the UNION ALL refers to the CTE being defined). It looks like it's aggregating a bunch of product names into...

Grouping_ID doesn't work like that, you need to specify the groupings in its argument list. Although personally for such a simple case I'd just use Grouping as it's a bit...

What relates the data in TableA to TableB? What do you expect to happen to the value of IsActive on rows in TableB other than the one you're wanting to...

What do you want to do with it?
There are many solutions that are all equally valid, but may depend on how you expect to use the data. Modifying or...