Columnstore Pagination

Aaron Bertrand investigates whether columnstore indexes help with pulling out specific “pages” of data:

Since then, I’ve wondered if ColumnStore indexes (both clustered and non-clustered) might help any of these scenarios. TL;DR: Based on this experiment in isolation, the answer to the title of this post is a resounding NO. If you don’t want to see the test setup, code, execution plans, or graphs, feel free to skip to my summary, keeping in mind that my analysis is based on a very specific use case.

I actually would have been surprised to find the answer here to be “yes.”  Columnstore is designed with aggregation in mind, rather than pulling out a fairly small subset of the data.

Related Posts

Where Columnar Databases Struggle

Teo Lachev makes a good point regarding columnar databases: A large company uses the SAP HANA ERP system. Users requires real-time access to transactional data. To avoid performance degradation, SLT replication (trigger-based change data capture) replicates data to another SAP HANA system that is used solely for reporting. The problem is that the more detailed […]

Read More

When Rowstore Compression Beats Columnstore

Joe Obbish looks at scenarios where page-level compression on rowstore tables can beat columnstore compression in terms of resultant table size: It’s certainly more difficult to come up with a demo that works without string columns, but consider how the page compression algorithm works. Data can be compressed on page basis, which includes both multiple rows […]

Read More

Categories

January 2016
MTWTFSS
« Dec Feb »
 123
45678910
11121314151617
18192021222324
25262728293031