delete q,a,c

Question

Hi. tell me how can I delete all questions, answers and comments.
Prompt request.

Answer 1

Use mysql and truncate the table `qa_posts` that holds all q, a, c. See http://stackoverflow.com/q/18271951/1066234

Note: That could have negative effect on your system (indexed search etc.).

Comments

"could have negative effect on your system"
That's easily fixed by running all the recalculation scripts (the buttons at the bottom of Admin>Stats).