In SQL Server 2017, automatic plan correction was added, which allows for the database engine to automatically use the "last known good plan" for a query that has suddenly regressed in performance.

SQL Query Store is a new feature offered in SQL Server 2016 that allows DBAs to see which queries ran when, how often and with what performance results to optimize queries and query plan selection.

So, once a plan is created, SQL Server flags it with a couple of identifiers that tie the plan to that query (or one very much like it) and puts that plan in a cache. When that query (or one very much ...

By combining machine learning and adaptive query execution, query optimization in Presto could become smarter and more efficient over repeated use. Topics Spotlight: AI-ready data centers ...

In SQL Server 2017, when the query optimizer encounters code with a multi-statement TVF, the query optimizer will pause optimization, execute the TVF subtree to get a very accurate cardinality ...

Starburst, provider of enterprise platform offerings for optimizing the Trino distributed SQL query engine, recently marked a milestone anniversary of the original open-source code family from ...

IDERA has released SQL Query Store Optimizer, a new tool in its portfolio of database monitoring tools to help database administrators (DBAs) manage and troubleshoot SQL Query Stores. The free tool ...