One area where a lot of development work went into SQL Server 2014 is the area of query optimization where a crucial component got re-written in order to improve query access and predictability. To ...

Cardinality estimation is widely believed to be one of the most important causes of poor query plans. Prior studies evaluate the impact of cardinality estimation on plan quality on a set of ...

With all the cheerleading and the steady drumbeat of new features being released to Azure, it’s easy to lose track of the many cool and valuable new features released in the on-premises version of SQL ...

Cardinality estimation is a key component in query optimization. To choose the best executing plan, the query optimizer should precisely estimate the selectivity of a SQL predicate -- the number of ...

Abstract: The deep learning-based cardinality estimation is a hot research topic in the field of database query optimization. The SQL query featurization has a direct impact on the quality of ...