PostgreSQL, often referred to as Postgres, is a powerful, open-source object-relational database system known for its stability, extensibility, and SQL compliance. It's widely used in industries ranging from finance and healthcare to technology startups due to its robustness and support for complex queries and data types. Whether you're building a data-driven web application or analyzing large datasets, PostgreSQL offers a scalable and reliable solution.
In this guide, we’ll walk through how to connect to a PostgreSQL server and retrieve data using a simple SQL SELECT statement.
Step 1: Install and Register a PostgreSQL Server
To start using PostgreSQL, you first need to install and register a PostgreSQL server:
1.1 Install PostgreSQL
Download the installer from the official website: https://www.postgresql.org/download/
1.2 Register/Connect to PostgreSQL Server Using pgAdmin
Open pgAdmin.
Right-click on “Servers” → Click Register > Server.
In the General tab, give your server a name (e.g., Local PostgreSQL).
In the Connection tab:
Host: Your Server Name
Port: 5432 (default)
Username: Your Service Account
Password: Enter the one you created during installation
Click Save to register and connect to the PostgreSQL server.
Step 2: Data Retrieval from Table
Go to the Database from where we need to retrieve the data
Pressing key ALT + SHIFT + Q which will open the Query Tool
Write the SELECT Query for any table or view
Below is an example
You can see the data from Table
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