출처 : https://medium.com/oracledevs/oracle-database-23c-new-feature-highlights-release-february-2023-c56e5ec5c9a Oracle Database 23c: New feature highlights Based on this fascinating Twitter thread by Philipp Salvisberg covering the presentation by Gerald Venzl at DOAG 2022 I would like to… medium.com 1. Select without FROM 2. Use column alias in GROUP BY and HAVING 3. Test for object existence i..