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How do I SELECT all users in PostgreSQL?
Use \du or \du+ psql command to list all users in the current database server. Use the SELECT statement to query the user information from the pg_catalog.
Can I remove Postgres user?
Only superusers and users with the CREATEROLE privilege can remove PostgreSQL users. (To remove a superuser, you must yourself be a superuser.) dropuser is a wrapper around the SQL command DROP ROLE. There is no effective difference between dropping users via this utility and via other methods for accessing the server.
How to list PostgreSQL users using PSQL tool?
Listing users using the psql tool. First, connect to the PostgreSQL database server using the postgres user: $ psql -U postgres. It will prompt you for a password: Password: Code language: Shell Session (shell) Once you enter the password for the postgres user, you will see the following PostgreSQL command prompt: postgres=#.
How to drop all connections to a specific PostgreSQL database?
I want to drop all connections (sessions) that are currently opened to a specific PostgreSQL database but without restarting the server or disconnecting connections to other databases. How can I do that? Here is my answer to very similar question on StackOverflow.
How can I get rid of PostgreSQL database?
On Windows, You can open the Task Manager -> Services, find the “postgresql” process, and restart it. When service will running again the database can be removed. Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. Provide details and share your research!
Why is PG _ STAT _ activity not showing in PostgreSQL?
Depending on your version of postgresql you might run into a bug, that makes pg_stat_activity to omit active connections from dropped users. These connections are also not shown inside pgAdminIII. If you are doing automatic testing (in which you also create users) this might be a probable scenario.