locating services using SQL

[Charley Tiggs <..hidden..>]

LSMB 1.2.4

Is there anything in particular that I need to check for when locating 
services using SQL?  Here's the SQL statement I have currently:

SELECT id, partnumber, description
FROM parts
WHERE inventory_accno_id IS NULL;

This appears to return all services but am wondering if it really is 
that simple.  :)

Charley