[Bug report]: use of arrays HOF with structs doesnt work

[alfonsorr]

A transformation like:

col[Array[Row]]("abc").filter(x => x.childColumn[String].isNull)

throws the error:
cannot resolve 'x' given input columns: [...,...]

• I have checked the current created issues, and it seems there is no other issue like this one:
  • YES

Doric version *

All

Current Behavior *

col[Array[Row]]("abc").filter(x => x.childColumn[String].isNull)

throws the error:
cannot resolve 'x' given input columns: [...,...]

Expected Behavior *

col[Array[Row]]("abc").filter(x => x.childColumn[String].isNull)

should check that the child "childColumn" exist and is of the provided type