SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 2)
    Function arrayProduct (alias a) (children 1)
     ExpressionList (children 1)
      Function array (children 1)
       ExpressionList (children 4)
        Literal Float64_1
        Literal Float64_2
        Literal Float64_3
        Literal Float64_4
    Function toTypeName (children 1)
     ExpressionList (children 1)
      Identifier a
