Access control is one of the essential features of database management. Starting in late 2019 ClickHouse contributor Vitaly Baranov began to introduce robust, full-featured Role Based Access Control (RBAC). As a result of this work–which included a huge number of…
ClickHouse AES encryption functions give users a powerful tool for data security and privacy. Learn how to use AES encryption in your analytic applications.
Altinity’s Robert Hodges and Alexander Zaitsev cover ClickHouse® security and privacy: users, RBAC, TLS, encryption, row-level security, and GDPR-aware design.
Open source licenses are in the news again. Elastic recently changed the licensing for ElasticSearch and Kibana from Apache 2.0 to a choice of Server Side Public License (SSPL) or the non-open source Elastic license. Like most open source licensing…
Did you know that ClickHouse has a built-in Web UI? The Web UI is a simple but extremely useful feature Alexey Milovidov added to ClickHouse in October 2020. In this short article I’m going to show you how it works…
Welcome to a new year and a new present from Altinity! Helping developers create valuable analytics on ClickHouse is our number one priority. To this end, we have created a new documentation site to better support and document our software…
The year 2020 has been a tough one for the world. It changed the way people work, communicate and travel. It taught us to care more about family, friends, and colleagues. It highlighted the fragility of our world. Altinity and…
Editor’s Note: This blog article is also posted on the official ClickHouse blog. We would like to thank Alexey Milovidov, Ivan Blinkov, and Alexander Zaitsev for their kind assistance. One of the great “features” of ClickHouse is a friendly and…
Altinity’s Alexander Zaitsev explains reliable data loading in ClickHouse®: insert performance, atomicity, deduplication, replication, and Kafka ingestion.
We are delighted to announce that the ClickHouse Altinity Stable Release is updated to 20.8.7.15. This release introduces many changes and new Security, Dictionary, MergeTree, SQL compatibility, and various other features.
This final article completes our tour of array capabilities. We’ll survey functions for array map and reduce operations, demonstrating behavior and commenting on performance. This is an opportunity to dig further into lambdas, which are critical for using arrays effectively.
ClickHouse arrays combine neatly with GROUP BY aggregation. We show how arrays track sequences and offer a couple of ways to do funnel analysis.
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