The analyzer can determine how many IOs each approach will take and choose the fastest way to do it.<BR><BR>Basically the estimated execution plan is mostly what the query optimizer does when it's ...

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 ...

The quality of that query plan is wholly dependent on the quality of the cardinality estimates (i.e., an estimate of the number of rows of data involved in an operation), the order of the operations, ...

Microsoft has just added support for query hints to Azure SQL Database, giving database administrators a powerful tool to manage the performance of ISV application code. Here's how it works. Database ...

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, ...

SQL Sentry Plan Explorer was launched two years ago and has since become one of the most popular free tools available to the SQL Server Community. The latest version adds several requested features, ...