Question : SQL round decimal

In a large select stmt, on of the columns I am reading from contains a number (double). This column may contain a whole number, or may contain a decimal. Sometimes the decimal is very long.

I am looking to round the decimial to 4, but only when required. If the number is whole or less than 4 decimals I prefer it stay that way.

How would I do this?
I am quering against a DB2 database

Answer : SQL round decimal

Oh I see what you're asking. Does this work?

SELECT (ROUND(MyNumber*10000),0)/10000