There are several ways to define a setting for a user in ClickHouse, depending on the use case and how long you want the setting to be configured. Let's look at a few scenarios...

In order to execute the same query on all nodes of a ClickHouse Cloud service, we can use clusterAllReplicas.

ClickHouse provides a simple and intuitive way to write filtered aggregates.

ClickHouse uses threads from the Global Thread pool to process queries and also perform background operations like merges and mutations. If there is no idle thread to process a query, then a new thread is created in the pool.

When a user-level setting is specified in the wrong place, the server won't start and an exception message is sent to the log. However, you can tell ClickHouse to ignore the incorrect setting using the skip_check_for_incorrect_settings setting.

A client can view the server logs - even at a different level than what the server log level is configured to - by setting the send_logs_level client setting.

To compare metrics between two queries, you must first obtain the query_id for both queries.

Overview of billing information.

Details on using CSP marketplaces to subscribe to ClickHouse Cloud.

The root cause of these permissions errors has been identified and is due to more strict checking of grants in the new release for async_inserts.