SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 1)
    Identifier arr
   TablesInSelectQuery (children 3)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      Function remote (alias r) (children 1)
       ExpressionList (children 3)
        Literal \'127.0.0.2\'
        Function currentDatabase (children 1)
         ExpressionList
        Identifier local_table
    TablesInSelectQueryElement (children 1)
     ArrayJoin (children 1)
      ExpressionList (children 1)
       Identifier arr (alias dummy)
    TablesInSelectQueryElement (children 2)
     TableExpression (children 1)
      TableIdentifier system.one (alias foo)
     TableJoin (children 1)
      ExpressionList (children 1)
       Identifier dummy
