SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 1)
    Subquery (alias s) (children 1)
     SelectWithUnionQuery (children 1)
      ExpressionList (children 1)
       SelectQuery (children 2)
        ExpressionList (children 1)
         Function greater (children 1)
          ExpressionList (children 2)
           Function count (children 1)
            ExpressionList
           Literal UInt64_0
        TablesInSelectQuery (children 1)
         TablesInSelectQueryElement (children 1)
          TableExpression (children 1)
           Function remote (children 1)
            ExpressionList (children 2)
             Literal \'127.2\'
             Identifier system.settings
   ExpressionList (children 1)
    Identifier s
