Columnstore

First introduced in SQL Server 2012, the Columnstore index is a new in-memory feature that allows for the creation of indexes that are stored in a column-wise fashion. It is targeted for data warehouses and can improve query performance by 10 to 100x. A columnstore index stores data in a different type of index page as well as heavily compressing the data. It also introduces a new batch execution mode that greatly increases processing speed and reduces CPU utilization. The combination of the new storage type, the compressed data, and batch mode processing allows SQL Server to read less data...

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