This is probably referring to "zero changes to your driver code" and not "zero changes to the SQL you send over this driver". Translating between SQL dialects

This is probably referring to "zero changes to your driver code" and not "zero changes to the SQL you send over this driver". Translating between SQL dialects is notoriously hard and attempts to translate [1] are working in 95% of cases. But the last 5% would require 5x amount of work. That's because "SQL dialect" also includes weird edge cases of type inference of things like COALESCE(5, FALSE) and emulation of system catalogs (pg_catalog, information_schema). [1] https://github.com/tobymao/sqlglot https://github.com/tobymao/sqlglot