Mysql i want to delete user id's @ 0 my attempt

[Almax1]

In Mysql i want to delete user id's @ 0 and there posts but i am unsure how to run the query

user id's @ 0 (removed members) are still being called up from some hacks

In a recent board move some members were not transferred to the new place there user ids are now 0 i want to delete them from the mysql database as they are still being called up with some hacks installed

help needed please anyone ?

DELETE FROM table_post
WHERE userid = '0'
ORDER BY timestamp
LIMIT 1

does this sound right ?