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.

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.

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.

これがIndex Seek（Non Clustered）になっていない場合、基本的にはチューニングの余地があると言えます。 ここにIndexを貼っていきましょう。

What Is Non-Clustered Index In Sql Server With Example? In a non-clustered index (or b-tree index), the order of the rows is not the same as how the data actually appears.