I guess window functions are advanced features, but I found it a little bit basic. Some things you could do to make it more advanced: * add questions abou

I guess window functions are advanced features, but I found it a little bit basic. Some things you could do to make it more advanced: * add questions about range mode * have questions which discuss default behavior regarding ordering and partitioning * Have questions which rely on things like RANGE 3 PRECEDING or other constructs