Query posts who have at least a taxonomy term (automatically)

Hi!

Is it possible to query posts with a term of a taxonomy. I have two taxonomies for posts, categories (native to wordpress) and secteurs (a custom taxonomy). I want to query all posts who have a term in the taxonomy secteur. Actually we can include or exlude terms but is there a way to exclude or include all terms of a taxonomy automatically. The problem to include or exclude each term one by one is if I add a term later, I need to add him to my query too.