[swstarone]

Dear sir, I wants to delete all users who are having 0 posts/topics
there are more than 70000 users so I need method to delete in bulk mode.
if possible from phpmyadmin then please help me.

[Stephen Edgar]

The queries in this post should do what you need:
http://www.scriptol.com/wordpress/mass-delete-users.php

[swstarone]

Dear sir this tool is made for wordpress posts,
a user who have posts in bbpress forum all shows as 0 post users.

can you help me to make a sql query for to change roles of bulk users.

[swstarone]

page was loading and I left the tab by thinking that it will not work.
but after about one hour when I come back the page was saying. Done!
and after this I seen that all zero post users are deleted.

[Stephen Edgar]

So it worked for you?