SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function plus (children 1)
     ExpressionList (children 2)
      Literal Array_[Float64_2.5, UInt64_1, UInt64_3, Float64_10.1]
      Literal Array_[UInt64_2, UInt64_4, UInt64_9, UInt64_0]
