The preceding directive executes the specified SQLqueryon the database specified by thepostgresql_config. The SQL query both renamesfull_nametonameso it matches the field name in the GraphQL typeCustomer, and retrieves only those customers who have a credit card. Note:Unquoted column names in ...
A View is a virtual/logical table that is used to simplify a complex query. Views represent the data of single or multiple tables using a SELECT query. Views (except for a materialized view) didn't store the data physically like regular/normal tables. In PostgreSQL, the “CREATE” command ...
Longstory short, any system that supports PostgreSQL will have libpq available, one way oranother.libpq is the APIengine for not only C, but also C++, Perl, and Tcl. It gives you the basicfunctions to connect, query, and alter a database. Most of the functions that you'll us...
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 ...
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...
On the Connection details page, enter the PostgreSQL database connection details. Username is the database user that was created in the last step.Select the Traffic routing method accordingly, If the database is on-premises or OCI Compute, select the Dedicated endpoint in order to make ...
A single PostgreSQL server can contain many databases. Let’s explore three different approaches to list databases in PostgreSQL!
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. ...
In order to make modifications or read data from a PostgreSQL database, the first thing we need to do is to create connections. However, each connection comes with overhead in terms of both process and memory; hence a system with limited resources (read, hardware) can only handle a certain...
In this blog, you will learn how to backup and restore a PostgreSQL database. Enjoy! 1. Introduction Some time ago, I needed to backup a PostgreSQL database from a production server in order to be able to fix a problem which was difficult to reproduce in