Many SQL Server operations can often be made faster by taking advantage of effective clustered indexes. It should be understood that this combination of a non-clustered and clustered index on the same ...

Do NOT simply create these indexes. The SQL Server does not take into account indexes which exist which are similar to the current indexes, nor does it take indexes which are similar to each other ...

Non-clustered indexes can be numerous in SQL Server 2008 I remember from my Sybase days that SQL Server tables could support up to 255 indexes. One clustered index and 254 non-clustered indexes.

Non-clustered Columnstore Indexes are also getting some enhancements in SQL Server 2016. The most notable of these enhancements is the ability to be updated.