More On Columnstore Batch Mode

Sunil Agarwal talks about batch mode processing with columnstore indexes:

While these results may not appear as dramatic on my laptop, the picture below shows the performance gains with Window Aggregates on a Server class machine with large DW database. The orange bar represents the query speed up we got with Window Aggregate operator in BatchMode. The highest speed up we saw was 289x!!

Batch mode is generally a huge benefit for data warehousing environments.

Related Posts

Preventing Issues With Columnstore Indexes

Kevin Chant has a post covering issues in his experience with the creation of columnstore indexes: Error due to online statement It’s a very common error caused usually by somebody copying a rowstore “Create Index” command. The “online=on” option you use with rowstore indexes does not work with creating columnstore indexes yet. For the record the […]

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Avoid Key Lookups On Clustered Columnstore Indexes

Joey D’Antoni points out a potential big performance problem with clustered columnstore indexes: In the last year or so, with a large customer who makes fairly heavy use of this pattern, I’ve noticed another concern. Sometimes, and I can’t figure out what exactly triggers it, the execution plan generated, will do a seek against the […]

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