In this article, we explore various tips and tricks for PostgreSQL and Oracle DBAs when working with distributed SQL databases like YugabyteDB. We discuss functional equivalents to Oracle's NVL function in PostgreSQL and YugabyteDB, and how to create views, materialized views, and rollups in both databases. Additionally, we cover the use of EXPLAIN ANALYZE to analyze query performance, creating indexes on columns, and provide resources for further learning. The article emphasizes the importance of performance tuning tools like EXPLAIN and ANALYZE, especially with larger datasets and more complex queries.