Kostas Pardalis articles - 10 total
DX UX = U DX UX =
User Experience is primarily concerned about guiding the user to a desired outcome in the most...
Why you should keep an eye on Apache DataFusion and its community.
On June 24, 2025, the first San Francisco Bay Area DataFusion meetup happened. I had the opportunity...
A glimpse into the future of data processing infrastructure.
Three weeks ago, VeloxCon took place in San Jose. The event was a great opportunity for people who...
WTF is a Vector Database?
It’s obviously a database, right? 😄 but how is it different from whatever you’ve heard until now that...
MLOps is 98% Data Engineering
MLOps is Mostly Data Engineering 💡 TL;DR MLOps emerged as a new category of tools for...
What is a Data Contract?
You might have started hearing the term Data Contract recently and wonder what it is. TL;DR: Data...
A Tutorial on SQL Window Functions.
Working with SQL Window Functions 💡 TL;DR: Window functions are among the most powerful...
A Practical Guide to SQL Dates with DuckDB.
A pragmatic guide on working with dates in SQL using DuckDB Ok so we talked on how SQL...
Introduction to SQL Timestamp, Date and Time Data Types.
TL;DR: Working with Time in SQL is one of the most common tasks that people are seeking help for....
Adding a new data type to a sql query engine (Trino)
Introduction In this post I want to take you through a journey that starts with Github...