The most important performance-tuning technique available is having the needed indexes created on the tables to ensure that the SQL Server database engine is able to get the data that it needs to ...

It really is going to come down to how many nonclustered indexes you have on the table, how many transactions per second are writing to the table and how the SQL Server's storage is configured.

New for SQL Server 2016 is the ability to place a Columnstore Index on an In-Memory Table.

An index stores both the values of a table's columns and a system of directions that enable access to rows in that table by index value. Defining an index on a column or set of columns enables SAS, ...

Read this SQL tutorial to learn when to use SELECT, JOIN, subselects and UNION to access multiple tables with a single statement.

Which raises the question: Why is SQL Server ignoring the index? If your table has a lot of rows and SQL Server is ignoring your index, typically the reason is that your index isn't subdividing the ...

SCL provides a set of functions for creating and manipulating SAS table indexes. However, SCL functions are just one way of building and querying SAS table indexes. Other ways include: the DATASETS ...