microsoft / tigertoolbox

Toolbox repository for Tiger team
http://aka.ms/sqlserverteam
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Columnstore Reorganize Option #282

Open vinchackochandy opened 1 year ago

vinchackochandy commented 1 year ago

Review the option to include column store reorganize option. It will be a great help for the SQL Server editions below 2019 as from 2019 tuple-mover is helped by a background merge task that automatically compresses smaller open delta rowgroups that have existed for some time as determined by an internal threshold, or merges compressed rowgroups from where a large number of rows has been deleted. Until SQL Server 2017, We need to manually Reorganize a column store index forces delta store row groups into compressed row groups in columnstore, and combine smaller compressed row groups into larger row groups.