Our inventory is based on a number system for example:

101 01
101 02
101 03
102 01
102 02
102 03
102 04
etc
What do I have to put in the query to make it skip a space after each group set. For example after 101 and after 102 etc. thanks.

Not in the query, but you can do it with grouping in your report (if that's what the query is driving.)