SelectWithUnionQuery (children 2)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 4)
    Identifier hostname
    Identifier ip_address
    Identifier ip_family
    Identifier cached_at
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier system.dns_cache
   Literal UInt64_0
 Identifier TSVWithNamesAndTypes
