PostgreSQL
This article describes how to create and maintain connections to your PostgreSQL database.
Before you can write your transformed data to a table in PostgreSQL, you should first establish a connection to your PostgreSQL database.
Create a PostgreSQL connection
Simple example
A PostgreSQL connection can be created as follows:
CREATE POSTGRES CONNECTION postgress_connection
CONNECTION_STRING =
'jdbc:postgresql://cdc2.c02eyuedjkh9.eu-west-1.rds.amazonaws.com:5432/auction'
USER_NAME = 'your username'
PASSWORD = 'your password';
When using PostgreSQL, it is not necessary to specify the database itself in the connection string.
Alter a PostgreSQL connection
Some connection options are considered mutable, meaning that in some cases, you can run a SQL command to alter an existing PostgreSQL connection rather than create a new one.
To change the database you are connecting to but keep everything else the same without having to create an entirely new connection, you can run the following command:
ALTER POSTGRES CONNECTION my_postgres_connection
SET CONNECTION_STRING = 'jdbc:postgresql://postgresql-cluster-1.cnpkgni9k2tq.us-east-1.rds.amazonaws.com/database'
Drop a PostgreSQL connection
If you no longer need a certain connection, you can easily drop it with the following SQL command:
DROP CONNECTION my_postgres_connection;
However, note that if there are existing tables or jobs that are dependent upon the connection in question, the connection cannot be deleted.
Learn More
To discover which connection options are mutable, and to learn more about the options, please see the SQL command reference for PostgreSQL.
Last updated