CHAPTER 35

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Clustered Columnstore Indexes

It is impossible to modify data in tables with nonclustered columnstore indexes. This limitation is one of the major factors preventing their widespread adoption in SQL Server 2012. SQL Server 2014 addresses this problem by introducing updatable clustered columnstore indexes (CCI).

This chapter provides an overview of the internal structure of CCI and discusses best practices for data loading and maintenance of them.

Internal Structure of Clustered Columnstore Indexes

A clustered columnstore indexis a single instance of the data in a table. Tables with clustered columnstore indexes cannot have any other ...

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