Sometimes writing SQL can be frustrating, especially when encountering NULL values. This article can help you better understand NULL in SQL
Demystifying Null in SQL: A Comprehensive Guide for Data Professionals Read More »
My main goal is to enable people without programming experience to use the powerful Sankey Diagram by simply uploading the transaction CVS file from the popular site Mint.com.
How I Built a Tool to Visualize Expense In Sankey Diagram Read More »
One key learning I had while chasing the latest tool is: Tools are great, but many data engineering problems cannot be resolved by using the newest tool but by human — Data Engineers. I want to share my thoughts on Why data engineering is about much more than just the tools you use.
Data Engineering: Why It’s About Much More Than Just the Tools You Use Read More »
Let’s bring the data community’s attention to the essential- Building Better Data Warehouses with Dimensional Modeling: A Guide for Data Engineers.
Building Better Data Warehouses with Dimensional Modeling: A Guide for Data Engineers Read More »
We will focus on the Apache Spark Union Operator Performance with examples, show you the physical query plan, and share techniques for optimization in this story.
Boosting Spark Union Operator Performance: Optimization Tips for Improved Query Speed Read More »
R could add potential benefits to help the data engineering community. Let’s discuss about Why R for Data Engineering is More Powerful Than You Thought.
Why R for Data Engineering is More Powerful Than You Thought Read More »
I want to share 5 hidden facts about Apache Spark that I learned throughout my career. Those can be helpful to you to save you some time reading the Apache Spark source code.
5 Hidden Apache Spark Facts That Fewer People Talk About Read More »
We will discuss a neglected part of Apache Spark Performance between coalesce(1) and repartition(1), and it could be one of the things to be attentive to when you check the Spark job performance.
Uncovering the Truth About Apache Spark Performance: coalesce(1) vs. repartition(1) Read More »
The data engineering space is evolving. Here are the resources I collected for practical data engineering resource.
The Practical Data Engineering Resource Read More »
How to find the best deals and coupons promptly can save you money and time. We can quickly build a weekend project that automatically finds the best deals on time with R and Mage
How to Find the Best Deals On Time with R and Mage Read More »
