It's usually easier to write SQL than drag/drop it. For complex joins having a graphical view of the join structure (list? tree? star?) is very helpful if you'r

It's usually easier to write SQL than drag/drop it. For complex joins having a graphical view of the join structure (list? tree? star?) is very helpful if you're new to it, otherwise no. And drag/drop tools don't cover complex stuff like recursive CTEs, and often, simpler stuff too. IME, YMMV. Maybe better graphical tools exist than the ones I have seen.