How to Disconnect from a database and go back to the default database in PostgreSQL?

Question

I\'m using PostgreSql version :

postgres=# select version();
                           version
-------------------------------------------------------------
 P         


        

Answer 1

There is not a 'disconnect' in psql. Instead of disconnecting from your newdb database you connect with the default postgres database.

Create the new database and connect to it:

postgres=# create database newdb;
CREATE DATABASE    
postgres=# \c newdb
You are now connected to database "newdb" as user "postgres".
newdb=#

List the number of connections on newdb:

newdb=# select datname,numbackends from  pg_stat_database where datname='newdb';
 datname | numbackends
---------+-------------
 newdb   |           1

Now, instead of disconnecting, just connect with the default postgres database.

newdb=# \c postgres
You are now connected to database "postgres" as user "postgres".
postgres=#

Now there are no connections on newdb:

postgres=# select datname,numbackends from  pg_stat_database where datname='newdb';
 datname | numbackends
---------+-------------
 newdb   |           0