We define the search space for a given query as the set of all the possible execution plans for that query, and any possible plan in this search space returns the same results. As discussed, the basic ...

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 ...

In part 1 of my SQL Server 2022 features series, you learned about the improvements to the cardinality estimator component of query optimization. In this installment, you will learn about another ...

Often, designing databases and speeding up SQL Server queries are treated as a kind of abstract problem: A just "Find this problem, apply this solution" approach to problem solving. In practice, ...

If you're seeking to optimize your SQL queries and make the most of your database, this fundamental guide is an excellent resource. You'll learn the essential techniques to enhance database ...

The first step in optimizing a query is looking at it’s execution plan. An execution plan is a visual representation of the operations performed by the database engine in order to return the data ...

With the latest public preview available, it’s time to decide if you want to upgrade to Microsoft’s most cloud-connected version of SQL Server so far. Three decades on, SQL Server is still a database ...

An update to the cardinality estimator feature in SQL Server 2022 will be one of the biggest changes to the database engine since its inception. Database engines like SQL Server are incredibly complex ...