unqualified window functions shall differentiate given partition and order by clause #621
Description
Describe the bug
given window functions on the same col with same function but different partition by and order by, the schema is failing due to conflict.
To Reproduce
Steps to reproduce the behavior:
> select max(c1) over () max_c1, max(c1) over (partition by c2) max_c1_c2 from test;
Plan("Schema contains duplicate unqualified field name 'MAX(test.c1)'")
Expected behavior
it shall work
Additional context
Add any other context about the problem here.