Formatting an SQL numeric query result with an arbitrary number of decimal places

Question

I have a database table with these two columns:

• Amount: numeric (18,0)
• DecimalPlaces: numeric (18,0)

This table can store amounts in va

Answer 1

The best I've been able to come up with so far is:

select Amount/power(10, DecimalPlaces) from MyTable

But it doesn't do exactly what I want:

• Oracle: the trailing zeroes are stripped, so US$15.00 looks like "15", not "15.00"
• SQL Server: a whole lot of extra trailing zeroes are added, so $23.99 looks like "23.99000000000" instead of "23.99"