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ClickHouse® is a real-time analytics DBMS
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Alexander Kuzmenkov 9df09f3506 Do not access shared arenas in aggregate function columns. 
These arenas may be updated concurrently, so it is unsafe to
access them, as illustrated by issue #4402. Store them separately
and use a different arena for the updates. Change some callers
to accomodate for this.
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README.md

ClickHouse — open source distributed column-oriented DBMS

ClickHouse is an open-source column-oriented database management system that allows generating analytical data reports in real time.

Useful Links

  • Official website has quick high-level overview of ClickHouse on main page.
  • Tutorial shows how to set up and query small ClickHouse cluster.
  • Documentation provides more in-depth information.
  • YouTube channel has a lot of content about ClickHouse in video format.
  • Blog contains various ClickHouse-related articles, as well as announces and reports about events.
  • Contacts can help to get your questions answered if there are any.
  • You can also fill this form to meet Yandex ClickHouse team in person.

Upcoming Events