A single PostgreSQL server can contain many databases. Let’s explore three different approaches to list databases in PostgreSQL!
In PostgreSQL, the pg_databses catalog holds all the details regarding databases. So, you can run the SELECT query in PostgreSQL to show the list of available databases in pg_databases: SELECT datname FROM pg_database; Note:You can execute this query from pgAdmin's query tool to get the...
In PostgreSQL, you can use the“createdb”command to create/make a new database. You can run the "createdb" command directly from the Command Prompt, unlike the“CREATE DATABASE”command. The“createdb”command can add some comments/descriptions to the database altogether. The basic syntax of ...
We can use UPDATE JOINS to add values from a separate table. In the below example, we have updated the values in the second table by joining the values from the first table specifying the condition in the WHERE clause. Update the values in the second table by joining...
In this blog, we will focus on migrating the database from Oracle to PostgreSQL, using the steps suggested below. If you aren’t moving to a different platform, you might find more appropriate native tools or other techniques to move your database. ...
In this post, we are going to see how to import Oracle data into PostgreSQL. If you have been using an Oracle database and now want to move to an open source alternative, then PostgreSQL is the best choice because not only is it free but it’s also a powerful RDBMS (relational data...
A recent LinkedIn survey found that Database as a Service (DBaaS) is the most popular choice for cloud migration. However, using Virtual Machines (VMs) on IaaS and Containers with Kubernetes (K8s) are also doing well in the market. Q: How are you moving your databases to the cl...
which leads to this output from the Postgresql 8.0.3 client: This is psql 8.0.3, the PostgreSQL interactive terminal. Usage: psql [OPTIONS]... [DBNAME [USERNAME]] General options: -d DBNAME specify database name to connect to (default: "root") -c COMMAND run only single command (SQL ...
GRANT ALL PRIVILEGES ON DATABASEflask_dbTOsammy; Copy To confirm the database was created, get the list of databases by typing the following command: \l Copy You’ll seeflask_dbin the list of databases. When you are finished, exit out of the PostgreSQL prompt by typing: ...
In a production environment, no matter how large or small your PostgreSQL database may be, regular backup is an essential aspect of database management.