Building a RESTful API with FastAPI and PostgreSQL
This article shows how to use Python to create a REST API for your application that developers can use to access the database.
2025-10-17
7,745 reads
sabyda
- Skills: Java, Spring boot, React, Azure, AWS, Postgres, Oracle, Websphere, Angular, Blockchain, Corda
MongoDB and NodeJS in action
Overview MongoDB is a popular NoSQL database used for building modern, scalable applications. In this article, we’ll cover how to set up MongoDB on Windows and connect to it using Node.js. We will also perform some basic Create, Read, Update, and Delete (CRUD) operations to ensure we understand fully on how Node.js can be made […]
2025-09-02 (first published: 2025-08-08)
235 reads
Using psycopg2 to Connect Python to PostgreSQL
Learn how to connect to a PostgreSQL database from Python with this popular library.
2025-09-02 (first published: 2025-08-25)
2,556 reads
Working with Indexes on SSMS
Overview In SQL Server, indexing is a technique used to improve the performance of queries by reducing the amount of data that SQL Server needs to scan. You can think of it like a table of contents in a book—it helps SQL Server find data more quickly. In this article, we will cover the following […]
2025-09-02 (first published: 2025-08-07)
5,184 reads
2025-07-30
1,853 reads
Connecting to PostgreSQL with Node.js
Overview In this article, we will understand how we can connect to PostgreSQL using Node.js application. We will start with setting up PostgreSQL in our local system and perform basic CRUD operations to interact with the PostgreSQL database. Prerequisites To start with this, we need the following conditions to be met: Windows machine (or any […]
2025-07-24
1,379 reads
Common Table Expression Basics
Learn the basics of how CTEs work with a few examples in this article.
2023-05-31 (first published: 2023-05-19)
5,961 reads
Establishing a Connection to PostgreSQL with GoLang
Learn how to use golang to connect to a PostgreSQL database.
2022-07-22
18,081 reads
Array and Custom Data Types in PostgreSQL
Introduction Just like every other database, PostgreSQL has its own set of basic datatypes, like Boolean, Varchar, Text, Date, Time, etc. We can easily store data like numbers, characters, date, time, etc. using these supported datatypes, but what if we need to store multiple data elements in a single column? Suppose we are storing the […]
2021-09-10
13,458 reads
Conditional DELETE and INSERT in PostgreSQL
Introduction We are comfortable with inserting/deleting record(s) into/from a table. But we sometimes get confused when we need to insert or delete records conditionally from a table. Let us look at an example. Example scenario Suppose we have a table, called ALL_EMPLOYEES, which contains all employees' information who are working or had ever worked for […]
2021-06-18 (first published: 2021-05-12)
10,893 reads
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Question of the Day
ORDER BY alias
There is a table tmp_tab:
CREATE TABLE tmp_tab ( id int, val int );
INSERT INTO tmp_tab VALUES (1, 1), (2, NULL), (3, 3), (4, 4), (5, 5);You want to order the rows ids by the following expression:
ISNULL(val, id) + 1Which of the following queries produces the expected ordering and why? (Select all correct) See possible answers