SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 2)
    Function ifNull (alias res) (children 1)
     ExpressionList (children 2)
      Function toString (children 1)
       ExpressionList (children 1)
        Identifier number
      Function toString (children 1)
       ExpressionList (children 1)
        Function negate (children 1)
         ExpressionList (children 1)
          Identifier number
    Function toTypeName (children 1)
     ExpressionList (children 1)
      Identifier res
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier system.numbers
   Literal UInt64_5