In this post, I am sharing a REVOKE script for stopping the new user from creating a new Table in PostgreSQL Database.

Whenever you create a new DB User in PostgreSQL, by default he or she can create a table in the PUBLIC schema of the assigned database.

If you want to stop this, revoke CREATE permission of that user and give only read-only permission.

PostgreSQL: Script to Create a Read-Only Database User

PostgreSQL: Why New User can access all Databases without any Grants

Revoke permission for all users (For public schema):

REVOKE CREATE ON SCHEMA public FROM public;

Revoke permission for a specific user (for public schema):

REVOKE CREATE ON schema public FROM user_name;