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Ordered Columnstore Indexes in SQL Server 2022

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One of the more challenging technical details of columnstore indexes that regularly gets attention is the need for data to be ordered to allow for segment elimination. In a non-clustered columnstore index, data order is automatically applied based on the order of the underlying rowstore data. In a clustered columnstore index, though, data order is not enforced by any SQL Server process. This leaves managing data order to us, which may or may not be an easy task.

2023-08-09

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Backup to Immutable Storage

In SQL Server 2025, a backup can be made on Azure Immutable Storage. What changes in how the backup is created?

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