This is the answer I subscribe to. CTEs and recursive CTEs are SQL's answer to a limitation of plain relational algebra; no loops. CTEs are a great and most

This is the answer I subscribe to. CTEs and recursive CTEs are SQL's answer to a limitation of plain relational algebra; no loops. CTEs are a great and most welcome addition to SQL but they are a bolt-on patch as compared with Datalog where it is a core feature.