Robert Sheldon in MongoDB

Working with the MongoDB Database Tools

The MongoDB Database Tools are a set of command-line utilities for working with MongoDB instances and their data. You can...

29 April 2025 16 min read

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Louis Davidson in T-SQL Programming

SQL Server CHOOSE Function: Syntax, Examples & Limits

Learn how to use the SQL Server CHOOSE function to select values by position. Covers syntax, practical ETL examples, random...

21 April 2025 40 min read

Boris Novikov in PostgreSQL

A Method for Managing Hierarchies in PostgreSQL

The Postgres database management system was originally designed as object-relational. We remind why PostgreSQL is an object-relational rather than just...

17 April 2025 22 min read

Lukas Vileikis in Other

Announcing Database Frontiers: a Database Conference You Haven’t Yet Heard About

Database Frontiers is a new database conference hitting the spotlight come October 15th, 2025. Here’s everything you need to know.…

15 April 2025 3 min read

Kellyn Pot'Vin-Gorman in Oracle

Oracle’s Limited Cloud Vendor Licensing

It’s nothing new for vendors to find ways to lock in customers to their products and cloud services. Oracle recently...

15 April 2025 3 min read

Robert Sheldon in MongoDB

Working with MongoDB Shell

Throughout this series, I’ve provided a number of examples of how to run commands in MongoDB Shell (mongosh). However, the...

10 April 2025 18 min read

Joe Celko in Theory and design

Data Elements on a Nominal Scale

“On a scale from 1 to 10, what color is your favorite letter of the alphabet?” –Slogan on a T-shirt...

08 April 2025 10 min read

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Ganesh Gopal Masti Jayaram in Databases

Data Quality: The Foundation for Business Agility and Growth

We live in a world awash with vast amounts of data. Today’s modern enterprises generate and rely on vast amounts...

04 April 2025 14 min read

Grant Fritchey in PostgreSQL

Multi-Version Concurrency Control (MVCC) in PostgreSQL: Learning PostgreSQL with Grant

It’s a tale as old as time. You want to read data. Your mate wants to write data. You’re stepping...

02 April 2025 15 min read

Dennes Torres in Microsoft Fabric

Fabric Database: Advanced Vector Search Features

A few weeks ago, I delivered some sessions about vector search in Fabric Databases and Azure SQL. Let’s talk about...

02 April 2025 6 min read

Ben Johnston in Databases

5 key problems from a SQL Server to Azure SQL Managed Instance migration (and how to avoid them)

Planning an Azure SQL Managed Instance migration? Here are five surprises a real transactional SQL Server move uncovered - and...

31 March 2025 10 min read

Anil Kumar Moka in Snowflake

Loading Data into Snowflake with Python and Pandas: write_pandas, DataFrame to Table, and File-Based Loading

Loading data into Snowflake using Python and pandas - connecting via the Snowflake Python Connector, writing DataFrames to tables with...

30 March 2025 17 min read

Joe Celko in Theory and design

The CREATE DOMAIN Statement

One of the least known, least used features of SQL is the CREATE DOMAIN statement. It does not exist in...

27 March 2025 6 min read

Dennes Torres in Microsoft Fabric

Fabric: Query a SQL Endpoint from a Notebook

Let’s analyse why we would like to query an SQL Endpoint. Once we understand why, we can dig into how...

26 March 2025 5 min read

Lee Asher in PostgreSQL

The Wide World of GiST Indexes

In Parts I (Solving the Overlap Query Problem in PostgreSQL) and II (Overlapping Ranges in Subsets in PostgreSQL) of...

25 March 2025 15 min read

Aisha Bukar in MySQL

MySQL vs PostgreSQL – String Datatypes

A very common task in creating a database is to store string data. For example, words, paragraph(s) or even documents....

20 March 2025 22 min read

Aisha Bukar in MySQL

MySQL vs. PostgreSQL: Character Sets and Collations

When working with strings in a database system, you need to ensure that the data is stored, sorted, and compared...

17 March 2025 18 min read

Joe Celko in Theory and design

Scales & Measurements

If you’re going to work with databases, you probably ought to know something about data. In particular, we don’t put...

07 March 2025 11 min read

Robert Sheldon in MongoDB

Importing and exporting data in MongoDB Compass

When working with MongoDB, you’ll likely need to import or export document data from time-to-time. You can use MongoDB Compass...

05 March 2025 16 min read

Anil Kumar Moka in Snowflake

Implementing Enterprise Data Security in Snowflake: Practical Concepts

As a data engineer who’s spent the last few years implementing enterprise-scale security in Snowflake, I’ve witnessed firsthand how challenging...

04 March 2025 16 min read