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Copying an Azure SQL database between two Azure SQL Instances in two different subscriptions.

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How a Legacy Logic Choked SQL Server in a 30-Year-Old Factory

By Chandan Shukla

Comments posted to this topic are about the item How a Legacy Logic Choked...

SQL Server Columnstore Index Fragmentation

By Grant Fritchey

Comments posted to this topic are about the item SQL Server Columnstore Index Fragmentation

do i lose "what this object depends on" etc when moving sprocs to etl server

By stan

Hi i was surprised to see the approach my coworkers used to sunset talend...

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Question of the Day

SQL Server Columnstore Index Fragmentation

The columnstore index is absolutely different than the traditional rowstore b-tree index. Because of this, it doesn't suffer from the same kind of fragmentation across pages as the b-tree index. Yet, it does suffer from a type of fragmentation brought about by an excess of deleted rows in a rowgroup and a lack of compression of storage because more things are in the delta store. While b-tree indexes use dm_db_index_physical_stats to show fragmentation, which system tables or DMVs can be used in SQL Server (prior to SQL Server 2025) to determine columnstore fragmentation?

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