After doing some research, I found one build-in command in postgresql server does the tricks. pg_dump and pg_dumpall. Here I only use pg_dump to accomplish my task. Export: pg_dump -c scportal -h localhost -U ethanz > /home/ethanz/database_dump1.sql -c --clean Output commands ...
array_to_json takes a PostgreSQL array and returns a single JSON value. The exported data is saved to the current working directory in a file named users.json. However, sometimes we only want to export a subset of the columns — first_name, last_name, email— instead of the complete ...
Here we will walk through the basic steps you would need to follow to import a .csv file successfully into a PostgreSQL database. We will explain it using two different options: first, when you are already logged into the database and then call the file from inside a psql prompt; and s...
You know this data sitting in a PostgreSQL database that you have always wanted to export to a JSON file? SELECT * FROM people WHERE meaning_of_life = 42; -- id | name | meaning_of_life -- ---+---+--- -- 1 | Alice | 42 -- 2 | Bob | 42 -- (2 rows) Because Postgr...
Now it’s time toexportthe data from PostgreSQL to CVS: Copy code snippet Copied to Clipboard Error: Could not Copy Copied to Clipboard Error: Could not Copy dvdrental=# \copy actor to '/vagrant/output/actor.csv' delimiter ',' CSV HEADER; ...
mkdir postgresql cd postgresql echo localhost:5432:my_database:postgres:my_password >> pgpass.conf Backing up a remote server If you need to back up a remote server add -h and -p options: pg_dump -h host_name -p port_number database_name > database.sql ...
PostgreSQL as a Service (PGaaS) is a specific form of Database as a Service (DBaaS) that enables users to easily create, manage, and use Postgres databases in the cloud. Various cloud service providers offer PGaaS options, including AWS with RDS for Postgres, Microsoft's Azure Dat...
Step 1 — Creating the PostgreSQL Database and User In this step, you’ll create a database calledflask_dband a database user calledsammyfor your Flask application. During the Postgres installation, an operating system user namedpostgreswas created to correspond to thepostgresPostgreSQL administ...
Automation of recurring import and export operations Common issues and possible solutions How to export a MySQL database Whenever you need to perform themigrationof databases, for example, from one server to another, the following question comes up to their mind: "How can Icopy a MySQL database...
Host:The PostgreSQL server address (e.g., localhost or an IP address). Port:Default is 5432 unless changed during PostgreSQL setup. Database:The name of the database to connect to. Username:PostgreSQL username. Password:Corresponding password for the username. ...