Difference between numeric, float and decimal in SQL Server

Question

What are the differences between numeric, float and decimal datatypes and which should be used in which situations?

For any ki

Answer 1

Not a complete answer, but a useful link:

"I frequently do calculations against decimal values. In some cases casting decimal values to float ASAP, prior to any calculations, yields better accuracy. "

http://sqlblog.com/blogs/alexander_kuznetsov/archive/2008/12/20/for-better-precision-cast-decimals-before-calculations.aspx