How to delete from multiple tables in MySQL?

Question

I am trying to delete from a few tables at once. I\'ve done a bit of research, and came up with this

DELETE FROM `pets` p,
            `pets_activities` pa
          


        

Answer 1

Since this appears to be a simple parent/child relationship between pets and pets_activities, you would be better off creating your foreign key constraint with a deleting cascade.

That way, when a pets row is deleted, the pets_activities rows associated with it are automatically deleted as well.

Then your query becomes a simple:

delete from `pets`
    where `order` > :order
      and `pet_id` = :pet_id