pgnanalyze helps users deliver consistent PostgreSQL performance and availability at any scale. Get started with a free trial or explore their docs. You can also find them on YouTube, where Lukas posts a weekly show called 5mins of Postgres.
Lukas was a founding engineer of Citus Data. Citus is an open-source extension to PostgreSQL that was eventually acquired by Microsoft. Find them on GitHub.
If you’re new to the topic, SQL (Structured Query Language) is a language for querying databases, introduced in the 1970s.