implementing another hash join...

From: Martha Chronopoulou <mchron(at)aueb(dot)gr>
To: pgsql-hackers(at)postgresql(dot)org
Subject: implementing another hash join...
Date: 2004-10-13 21:48:06
Message-ID: 416DA296.30103@aueb.gr
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Hi,
Im new to postgres and I'm about to implement the algorithm "double
pipelined hash join". I've started using SPI functions but soon I
realised that I 'm not at the right way (am I?). Is there a way that
I'm not obliged to change code of the optimizer of postgres but to
write a seperate code as a new function?I've been told by my supervisor
that I should use the function that is doing the hashing of a relation.
There is a chaos !!!!Please help!!I'm reading the documentation of
postgres and some '.c .h' files (mainly the createplan.c at the
directory "~/src/backend/optimizer/plan/") to figer out what to do and
from where to start.
Regards!!!!
Martha

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