Hello everyone.
When I studied system catolog,I can't understand a concept "operator strategies
for an access method", Who can tell me what it's that and where I could find document
on the Web. Thanks for your reponse very much, especially thank Hannu Krosing.
Guo longjiang Harbi
Hello, All
I have read the source code /cvsroot/pgsql/src/backend/optimizer/path/costsize.c
and there is a function cost_sort(...). I think the code in 464 to 465 lines must be
changed to:
startup_cost += npageaccesses *
(1.0 + cost_nonsequential_access(1)) * 0.5;
The origi
Hello, Mr. Tom Lane
I am a chinese student studied in Harbin institute of technology. I want join to
PostgreSQL Global Development Group and I want work on the planner/optimizer. I have
been reading the source code for 2 months. There many data strucutres I can't
understand. Can you tell me
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.
Guo longjiang Harbin China
__
===
Ð
