Postgres or ClickHouse? Row vs Column Storage, and When Each Wins

PostgreSQL and ClickHouse are both databases that store data, but they're built for opposite jobs. PostgreSQL is row-oriented, good for OLTP, and ClickHouse is column-oriented, good for OLAP. Choosing the wrong one can lead to performance issues. Consider using PostgreSQL for transactions, point lookups, and updates, and ClickHouse for aggregations and scans over big data.