Major Description
Using index-like notation when extracting columns in a struct produces generated column names like col1, col2, etc. However, when dot-like syntax is used, the column name is correctly selected.
Example:
select struct(a['x'], a['y']), struct(a.x, a.y) from (select named_struct('x', 1, 'y', 2) as a)
Produces the following schema and result:
root |-- struct(a.x, a.y): struct (nullable = false) | |-- col1: integer (nullable = false) | |-- col2: integer (nullable = false) |-- struct(a.x, a.y): struct (nullable = false) | |-- x: integer (nullable = false) | |-- y: integer (nullable = false) +----------------+----------------+ |struct(a.x, a.y)|struct(a.x, a.y)| +----------------+----------------+ |{1, 2} |{1, 2} | +----------------+----------------+
It would be good to have x and y column names in the first struct.
