SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 4)
    Literal Array_[\'ab\', \'c\', \'de\', \'\', \'hi\'] (alias arr)
    Literal UInt64_1 (alias len)
    Function arrayShingles (children 1)
     ExpressionList (children 2)
      Identifier arr
      Identifier len
    Function arrayShingles (children 1)
     ExpressionList (children 2)
      Function materialize (children 1)
       ExpressionList (children 1)
        Identifier arr
      Identifier len
