On 08/21/2013 07:20 PM, 高健 wrote:
> Hi:
>
> I have heard that Heap-Only Tuples is introduce from 8.3.
> And I am searching information for it.
>
> How can I get a detailed information of HOT?
http://git.postgresql.org/gitweb/?p=postgresql.git;a=blob;f=src/backend/access/heap/README.HOT;hb=HEAD
> For example:
> according to a table, How many tuples are heap only tuples , and how
> many are not?
>
> And also , Is there any options which can influence HOT occurrance?
>
> Best Regards
--
Adrian Klaver
adrian.klaver@gmail.com