Postgresql

Understanding the impact of failed long-running transactions in PostgreSQL, how dead rows affect performance, and comparing different cleanup approaches.

A deep dive into PostgreSQL Index Scans and Index Only Scans, their differences, use cases, and how to optimize your queries using them effectively.

Deep dive into PostgreSQL Visibility Map, its role in Index Only Scans, and how to maintain it effectively through VACUUM operations.

Sequential Scan, Index Scan, and Bitmap Index Scan in PostgreSQL with examples and comparisons.