Drupal 6 - How can I disable comments on all nodes / content_types?

Question

How can I disable comments on all already existing nodes and disable comments by default for all content_types?

Answer 1

1. Run the following SQL query to disable comments on all existing nodes:

   UPDATE node SET comment=0  WHERE 1;
   

2. Go to /admin/content/types -> Edit each content_type -> Disable comments by default