What is an SQL Window Function? A window is a set of rows or observations in a table or result set. In a table, you may have more than one window depending on how you specify the query.

At Microsoft Build, SQL Server 2025 enters public preview with major enhancements in AI integration, performance, reliability ...

SQL Server 2019 also introduces scalar function inlining and deferred compilation ... which means you can create an index in maintenance windows or resume building after a server failure.