Fantastic gains in Postgres 15! improved sorting by 371%. Normally you can avoid sorting by using an index access path. However, you can’t always have an index on every group by, order by, join or distinct predict. This will come handy. Let us discuss

Resources

https://www.phoronix.com/scan.php?page=news_item&px=PostgreSQL-15-Faster-Sort

https://techcommunity.microsoft.com/t5/azure-database-for-postgresql/speeding-up-sort-performance-in-postgres-15/ba-p/3396953#change3

https://www.postgresql.org/docs/15/release-15.html#id-1.11.6.5.4

https://techcommunity.microsoft.com/t5/sql-server-blog/understanding-sql-server-fast-forward-server-cursors/ba-p/383556