Altinity Blog

ClickHouse 1.1.54245 release

  Few weeks ago Yandex released ClickHouse 1.1.54245 that included a number of features requested by community. The new deb packages are available from Yandex repo and RPMs from Altinity repo. So let’s see what’s[...]

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ClickHouse AggregateFunctions and Aggregate State

Jul 10, 2017   
The guest article from ClickHouse evangelist Yegor Andreenko (@f1yegor) about an interesting extension of aggregate functions aggregate states, that can be used to pre-aggregate data that usually has to be kept in raw, like uniques.

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ClickHouse vs Amazon RedShift Benchmark #2: STAR2002 dataset

Jul 3, 2017   
We continue to benchmark ClickHouse against other analytic DBMSs. We were inspired by the benchmark with star2002 experiment dataset described here, and decided to replicate it using ClickHouse. That gives another interesting comparison vs Amazon RedShift.

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