SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function arraySum (children 1)
     ExpressionList (children 1)
      Function array (children 1)
       ExpressionList (children 2)
        Function CAST (children 1)
         ExpressionList (children 2)
          Literal \'1.2\'
          Literal \'Decimal(60, 30)\'
        Function CAST (children 1)
         ExpressionList (children 2)
          Literal \'3.45\'
          Literal \'Decimal(3, 2)\'
