Removing numbers that are negative from SQL query

Question

How do you remove negative numbers from SQL query result.

Example: Select acquisitionprice-salesprice From Han.trans

I'm trying to find out the Profit by subtracting two columns from a table and would like to have the negative numbers removed from the result

Answer 1

WHERE salesprice > acquisitionprice

probably is treated as the same as giorgos-betsos commented

WHERE acquisitionprice-salesprice >= 0

but reads a little simpler to me.