SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 1)
    Function hex (children 1)
     ExpressionList (children 1)
      Function CAST (children 1)
       ExpressionList (children 2)
        Identifier x
        Literal \'AggregateFunction(sum, Decimal(50, 10))\'
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      Subquery (children 1)
       SelectWithUnionQuery (children 1)
        ExpressionList (children 1)
         SelectQuery (children 1)
          ExpressionList (children 1)
           Function arrayReduce (alias x) (children 1)
            ExpressionList (children 2)
             Literal \'sumState\'
             Function array (children 1)
              ExpressionList (children 1)
               Function toDecimal256 (children 1)
                ExpressionList (children 2)
                 Literal \'0.0000010.000001\'
                 Literal UInt64_10
   ExpressionList (children 1)
    Identifier x