A Step-by-Step Guide to Implementing Columnar Tables in SQL Server

Columnar storage was introduced in SQL Server 2016 as part of the SQL Server 2016 In-Memory OLTP feature. It is specifically designed for data warehousing and analytical workloads, where large amounts of data need to be scanned, aggregated, or analyzed efficiently. Columnar storage stores data in a column-wise format rather than the traditional row-wise storage, offering significant performance benefits for read-heavy operations such as reporting and analytics.