Does it Matter? Pulling fields in a query

[Canadiangal]

My question is this:
When creating a calculated field in a query, does it matter where you pull the fields from inside of the calculation?

Example:
Calculated field

Price - Cost Where both price and cost are fields in the query

or

Table!Price - Table!Cost Where both price and cost are fields in a table.

Is it a better practice to always pull fields for a calculation with the fields listed in the query?

[dcrake]

If the field name could come from more than one table then it is wise to bring it down so you can identify it correctly, however if it only appears once then there is no need to do so, unless you want to use it for some other reason.

David