Arenadata QuickMarts
Arenadata QuickMarts (ADQM) is a cluster column-oriented DBMS built on ClickHouse. ADQM generates various online analytical reports based on vast amounts of information stored in flat marts. ADQM is much faster than traditional DBMS.
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Sharding is a database design principle that suggests locating parts of the same table on different shards. Shard is a cluster node that can consist of one or more replicas. Replicas are servers that duplicate data within a shard. SELECT and INSERT queries can be sent to any replica of a shard, there is no a dedicated master.
Learn about ways to install ADQM on hosts with/without access to Internet (online/offline) using ADCM.
The JOIN clause combines columns from two tables into a new table. A set of data rows in a resulting table depends on the JOIN type and the specified join conditions.
Learn about the minimum software requirements for servers of an ADQM cluster.
Learn about the minimum hardware requirements for servers of an ADQM cluster.
ADQM release notes. Learn about new features, improvements, bug fixes, etc.
To connect to ADQM, you can use clickhouse-client — a standard ClickHouse command-line client that allows you to run SQL queries and view their results in your terminal application. Once ADQM is installed, clickhouse-client is available on each server of the ADQM cluster.
The article contains a guide on how to install ADCM — a separate Arenadata product designed for simple, convenient, and fast software deployment and exploitation.
This article describes the parameters that can be configured for ADQM services via ADCM.
A window function performs a calculation across a set of rows: all rows in a query are divided into groups (windows), and each group has its own aggregates. It does not return a single output row as an aggregate function. A window function adds an aggregated value to each row of the selection result in a separate column.