SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 4)
   ExpressionList (children 2)
    Identifier b
    Function sum (children 1)
     ExpressionList (children 1)
      Identifier c
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      Subquery (alias a) (children 1)
       SelectWithUnionQuery (children 1)
        ExpressionList (children 2)
         SelectQuery (children 4)
          ExpressionList (children 3)
           Identifier a
           Identifier b
           Function sum (alias c) (children 1)
            ExpressionList (children 1)
             Identifier c
          TablesInSelectQuery (children 1)
           TablesInSelectQueryElement (children 1)
            TableExpression (children 1)
             TableIdentifier union2
          Function greater (children 1)
           ExpressionList (children 2)
            Identifier a
            Literal UInt64_1
          ExpressionList (children 2)
           Identifier a
           Identifier b
         SelectQuery (children 5)
          ExpressionList (children 3)
           Identifier a
           Identifier b
           Function sum (alias c) (children 1)
            ExpressionList (children 1)
             Identifier c
          TablesInSelectQuery (children 1)
           TablesInSelectQueryElement (children 1)
            TableExpression (children 1)
             TableIdentifier union2
          Function greater (children 1)
           ExpressionList (children 2)
            Identifier b
            Literal UInt64_1
          ExpressionList (children 2)
           Identifier a
           Identifier b
          ExpressionList (children 2)
           OrderByElement (children 1)
            Identifier a
           OrderByElement (children 1)
            Identifier b
   ExpressionList (children 1)
    Identifier b
   ExpressionList (children 1)
    OrderByElement (children 1)
     Identifier b