b2 requires postID for delete process,so there is no way to mass delete posts via the software AFAIK.That's one of the lacking features of b2.

However you can always head for phpmyadmin and delete directly from database.hit phpmyadmin > sql tab and sth around:

DELETE FROM `evo_items__item` WHERE post_datecreated BETWEEN '2009-01-01' AND '20010-12-31' LIMIT 9999

Thank you.

Are there no problems with related tables when I delete in evo_items__item?

You also need to delete the posts entries in evo_postcats ... or whatever the table's called in your version

¥