PostgreSQL provides anALTER DATABASEcommand that allows us to modify a database. For instance, using ALTER DATABASE command, you can alter the database name, attributes,owner, etc. In Postgres, theALTER DATABASEcommand uses theOWNER TOclause to change/modify the database owner. Using practical...
Objective:To change the port that Postgres database connectivity uses. Steps: The database connectivity of Postgres database needs 33315 port to work. Check if any other application runs in the same port. If the port is already in use, then change the default port number in...
Change data capture use casesSequin works great for change data capture use cases like:Triggering a workflow when data changes in Postgres: Execute custom business logic whenever specific rows are inserted, updated, or deleted in your database. Making events available to downstream services: Stream ...
A change in data occurs in a database through INSERT, UPDATE, or DELETE operation. Change data capture runs the same operations or brings the same effect in the destination database as and when the change happens. In most cases, the source database is relational since CDC is often used ...
Now, whenever you logged in as a “postgres” user, the default schema would be “example”. Conclusion In PostgreSQL, the “SET SEARCH_PATH” command is used to change a schema temporarily. To change a schema permanently at the database level or user lever, the “ALTER DATABASE” and ...
UPDATE pg_database SET datallowconn = FALSE WHERE datname = 'template1'; Now you can create a new database by running from regular shell: su - su - postgres createdb blog; If you log in back to psql and check the databases, you should see the proper encoding of your new database:...
Ver Cluster Port Status Owner Data directory Log file 9.1 main 5433 down postgres /var/lib/postgresql/9.1/main /var/log/postgresql/postgresql-9.5-main.log 11 main 5432 down postgres /var/lib/postgresql/11/main /var/log/postgresql/postgresql-11-main.log ...
[postgres@localhost config]$ more pgbouncer.ini [databases] f_game = host=127.0.0.1 port=1233 dbname=test_db user=test password=test [pgbouncer] listen_port = 1999 listen_addr = 127.0.0.1 auth_type = md5 auth_file = /home/postgres/pgbouncer/user.txt ...
# config.exs config :my_app, WalEx, url: "postgres://username:password@hostname:port/database" publication: "events", subscriptions: ["user", "todo"], name: MyAppYou can also dynamically update the config at runtime:WalEx.Configs.add_config(MyApp, :subscriptions, ["new_subscriptions_1",...
We will firstly login to the system by Postgres default user. Here we have assigned a password to the Postgres role already. So, we will enter the password. Code: sudo su - postgres Output: Example #2 Further, let us check all the users which are present in the database server by fir...