On Wed, 2002-09-04 at 12:43, ljguo_1234 wrote: > Hello everyone. > I can't understand Tid Scan, Who can tell me what it's that and where I could >find document on the Web. Thanks for your reponse.
It is scanning table by TupleID's. A tuple id is a 6-byte entity which consists of 4-byte page number and 2-byte tuple index inside page. So if you know the TID you can directly get the corresponding tuple. -------------- Hannu ---------------------------(end of broadcast)--------------------------- TIP 6: Have you searched our list archives? http://archives.postgresql.org
