Lucene query to exclude docs, but not docs with partial matches

Question

Say I have a set of docs that go like this:

• mercedes
• mercedes trucks

Is there a way to create a query that will filter out the mercedes, but not the mercedes trucks?

Answer 1

Have you tried:

+carbrand:mercedes* -carbrand:mercedes

(or whatever the fieldname is of course). Or am I oversimplifying based on the specific example?

Answer 2

If you need the phrase "mercedes trucks" then your query can just be

"mercedes trucks"

if you need the words mercedes and trucks then your query can be

+mercedes +trucks

OR

mercedes AND trucks

These queries will naturally filter out the docs that don't contain the word trucks.

Edit: Unless this is a keyword/untokenized field. In that case only the first example will work.