Roland Wenzlofsky
Why Teradata DBAs Should Prioritize Housekeeping the DBC AccessRights Table
How to Improve Cardinality Estimations in Teradata: The Optimizer's Toolkit
Learn about Teradata Heuristics and Optimizer's approach to estimating cardinality for non-indexed columns in this article. Discover how skew improves estimations and why heuristics should be avoided.
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.
Teradata DDL Best Practice: Use DELETE Instead of DROP for Efficiency and Resource Management
Learn why you should opt for DELETE instead of DROP when it comes to Teradata DDL. Avoid locking dictionary tables and conserve resources.
Is Teradata Compression Worth Your Time and Effort?
Teradata DBMS offers various compression options to save disk space and improve performance. But, the cost of implementing the compression takes man-time. This article discusses the cost vs. benefit of compression and suggests carefully considering the compression setting when designing new or modif
Benefits of Organizing Stored Procedures into Chapters and Steps
I made organizing Stored Procedures into Chapters and Steps a principle.
These separation points are marked by comments and variables used in performance and result logging.
A step refers to a technical or conceptual task that cannot be further divided without losing the abstraction of Stored Procedures or the main
Teradata Statistics: Understanding and Using Collected Metrics for Optimal Query Performance
Discover the importance of Teradata statistics in optimizing query execution plans. Learn how to collect statistics and when to use them for best results.
How to Analyze Teradata Tables for Multivalue Compression: A Less Costly Method Using SHOW STATISTICS VALUES COLUMN ON
Learn how to analyze Teradata tables for Multivalue compression without costly operations by using the SHOW STATISTICS VALUES COLUMN statement. This method delivers excellent compression suggestions with less resource and time consumption than traditional approaches. However, it only works for colum