Knowledge Base

Learn how to validate that two ClickHouse queries produce identical result-sets using hash functions and comparison techniques.

Learn how to resolve the SSL Exception CERTIFICATE_VERIFY_FAILED error.

This article explains how to resolve the DB::Exception error related to intersecting parts in ClickHouse, often caused by a race condition or manual intervention in the ZooKeeper data.

TTL rules in ClickHouse are eventually applied, and you can control when they are executed using the `merge_with_ttl_timeout` setting. Learn how to force TTL application and manage background threads for TTL execution.

Learn how to install and test ClickHouse on Windows 10 using WSL 2. Includes setup, troubleshooting, and running a test environment.

Learn how to use the `query_log` table in ClickHouse to identify the most memory and CPU-intensive queries across distributed nodes.

Are you getting the error "Cannot append data in format Parquet to file" error in ClickHouse? Let's take a look at how to resolve it.

Learn how to query ClickHouse logs to identify all queries involving Materialized Views within a specified time range.

Learn how to import JSON array objects into ClickHouse and perform advanced queries using JSON functions and array operations.

Learn how to quickly recreate a small table and its data across different terminals using copy/paste for development environments.