RAG Does Not Fail Because of the Model. It Fails Because of the Data.
Every enterprise AI strategy deck I have seen in the past years contains the same promise: “We will build a RAG-based knowledge assistant…
Databricks
A collection of 17 issues
Why Z-Ordering Fails on Skewed Data — and Liquid Clustering Does Not
Z-ordering and Liquid Clustering both aim to improve Databricks query performance through data skipping. But when your data is skewed, one of them quietly becomes useless. A visual explanation of why — and how the Hilbert curve changes everything.
You Migrated From Teradata to Spark and Threw Away the One Thing That Made It Fast
The 15-Year Detour: How the Data Industry Spent Billions Reinventing SQL
Teradata Hybrid: Bridge or Destination?
Introduction to Apache Spark: A Powerful Solution for Big Data Processing and Analytics
Collect Statistics in Teradata - Evaluation
Warning: Teradata 16.20 Upgrade May Affect Reporting Queries - Potential Fix Found
There are some important considerations to keep in mind when upgrading to Teradata 16.20.
After upgrading to Teradata 16.20, we noticed that certain reporting queries produced inconsistent result sets upon each execution. Occasionally, the results were accurate, while at other times they were inaccurate.
Upon analysis, I found
Become a Teradata Vantage Expert with Our Free Android App: Download Now from Google Play Store!
Become a Teradata Vantage expert by downloading our new Android app for free from the Google Play store and practicing.
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Efficient Teradata Date Calculations Avoiding INTEGER Values
Learn how Teradata stores dates internally as INTEGER values and how to efficiently calculate dates after 1900-01-01 using a simple formula. Get more useful Teradata date calculations in this article.