YouTube
- Markus Winand — “SQL Performance Explained” talks — conference
recordings covering the same material as his book, engine-agnostic.
- CMU Database Group (Andy Pavlo) — Database Systems lectures — full
university-level course on database internals, including a dedicated
lecture on tree-based index structures.
- PostgreSQL Conference (pgconf) talks on indexing and EXPLAIN —
search recent pgconf.dev / PGConf.EU talks specifically on query
planning and index internals.
- Percona Live conference talks — MySQL/InnoDB-specific deep dives,
frequently covering real production indexing incidents.
- Hussein Nasser — Backend Engineering channel — accessible
explanations of database indexing, EXPLAIN plans, and query
optimization aimed at working engineers.