In SQL Server, the database can be stored in different files and filegroups. If your database is small (100 MB or less), you do not need to worry too much about files and filegroups. But if you have a ...

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.

Using T-SQL, there's an extended stored procedure called xp_instance_regread. To try it out, paste the following code into Query Analyser: DECLARE @retvalue int, @data_dir varchar (500) ...