SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 1)
    Function MaX (children 1)
     ExpressionList (children 1)
      Identifier aggr
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      Subquery (children 1)
       SelectWithUnionQuery (children 1)
        ExpressionList (children 2)
         SelectQuery (children 3)
          ExpressionList (children 1)
           Function mAX (alias aggr) (children 1)
            ExpressionList (children 1)
             Literal Int64_-1
          TablesInSelectQuery (children 1)
           TablesInSelectQueryElement (children 1)
            TableExpression (children 1)
             TableIdentifier system.one
          Function not (children 1)
           ExpressionList (children 1)
            Literal UInt64_1
         SelectQuery (children 3)
          ExpressionList (children 1)
           Function MAx (alias aggr) (children 1)
            ExpressionList (children 1)
             Literal Int64_-1
          TablesInSelectQuery (children 1)
           TablesInSelectQueryElement (children 1)
            TableExpression (children 1)
             TableIdentifier system.one
          Literal UInt64_1
