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 3)
        Function toDecimal64 (children 1)
         ExpressionList (children 2)
          Literal UInt64_1
          Literal UInt64_8
        Function toDecimal64 (children 1)
         ExpressionList (children 2)
          Literal UInt64_2
          Literal UInt64_8
        Function toDecimal64 (children 1)
         ExpressionList (children 2)
          Literal UInt64_3
          Literal UInt64_8
    Function toTypeName (children 1)
     ExpressionList (children 1)
      Identifier a
