8 docs tagged with "advanced"

Are you contributing to ClickHouse? Here's how to know which tests are flaky when you submit a new PR.

Trying to detect memory leaks in ClickHouse with Valgrind? Here's why and how to use jemalloc instead.

If you're working with ClickHouse and Zookeeper crashed causing data loss, here's how you can restore it to a usable state.

Can't get to the bottom of a performance issue with your ClickHouse server? Here's how to monitor ClickHouse threads to find performance killers.

ClickHouse has different algorithms for join operations. Here's how to choose which join algorithm to use to reduce memory usage.

Ever wondered how to improve performance when querying many columns in ClickHouse? Here's how to use compact parts to do so.

The EXPLAIN SYNTAX statement in ClickHouse often provides clues on how to optimize your ClickHouse queries. Here's how to use it.

The normalizedQueryHash function in ClickHouse has some benefits, but you should avoid it certain cases.