Teradata introduced several new features, including one that caught our attention: object use counts (OUC). This feature optimizes the calculation ...

Improving Query Performance with Teradata Statistics Extrapolation and Object Use Counts (OUC)

Introduction to Teradata Sample Statistics Discover the optimal utilization of Teradata Sample Statistics, including when, how, and why to implement ...

Teradata Sample Statistics: When, How, and Why to Use Them

The Optimizer typically excels in utilizing statistics, yet examining the execution plan and cardinality estimations can sometimes be beneficial. Since ...

How to Optimize Teradata Statistics and Avoid Heuristics: A Case Study

Missing statistics for indexed columns are typically inconsequential. The Optimizer replaces them with dynamic AMP-sampled statistics. Unless tables are significantly ...

How to Improve Cardinality Estimations in Teradata: The Optimizer’s Toolkit

What is Teradata Statistics Extrapolation? In data warehousing, populating historized tables with snapshot data valid for the current day is ...

Teradata Statistics Extrapolation: What it is and How it Works

Introduction As a seasoned Teradata professional, I have encountered several misconceptions about how the system’s optimizer utilizes statistics and their ...

A Comprehensive Guide to Teradata Statistics: Common Misconceptions, Best Practices, and Real Reasons Behind Performance Degradation

Teradata Heuristics are utilized in cases where statistics for a non-indexed column are unavailable. They serve as rules of thumb ...

Teradata Heuristics for Nonindexed Columns

Biased histogram entries store accurate counts and should be used to update statistics reflecting the number of rows obtained for ...

How to Use Biased Value Histograms for Accurate Statistics Estimation on Teradata SQL

Teradata 14.00 offers three enhancements that enable you to customize statistic collection to suit your requirements better: COLLECT STATISTICS USING ...

Improvements in Tailoring Statistics Collection with Teradata 14.00: Using Sample, MaxValueLength, and MaxIntervals Options

This article will thoroughly examine a statistical problem. We will investigate the inaccuracies in the estimates for our sample query ...

Analyzing and Fixing Teradata Statistics Estimation Problem