To properly evaluate the impact of a set of SQL statements during a database environment change, it's crucial to have a thorough understanding of how SQL query performance can be impacted. There are two primary types of performance changes that can occur in SQL queries. The first type, which I refer to as "progressive change," is typically caused by changes in statistics, such as fluctuations in data volume in relevant tables or index pages. If the statistics change is not significant enough...
How to analyze the performance impact of a database environment change using what-if analysis?
How to analyze the performance impact of a database environment change using what-if analysis?