marking tuples
От
Ehab Galal
Тема
marking tuples
Дата
Msg-id
BAY138-W31C72CF9118BE1CB6BC00966D0@phx.gbl
Список
Дерево обсуждения
marking tuples Ehab Galal <ehabgalal123@hotmail.com>
Re: marking tuples Gregory Stark <stark@enterprisedb.com>
Re: marking tuples Ehab Galal <ehabgalal123@hotmail.com>
Hi,
I am implementing a new algorithm inside postgresql for a side research project. I am just wondering if anyone may give me few hints about the following problem:
Consider the following plan:
NewAggregate
->NewJoin
->NewJoin
->NewJoin
->SeqScan
->SeqScan
->SeqScan
->SeqScan
In my algorithm,
each NewJoin node may "mark" its ps_ResultTupleSlot with either red/green. I need that mark to flow in the pipeline so that i can collect them at the top aggregate.
Any hints about how to keep such mark is greatly appreciated.
Thanks a lot,
Ehab
I am implementing a new algorithm inside postgresql for a side research project. I am just wondering if anyone may give me few hints about the following problem:
Consider the following plan:
NewAggregate
->NewJoin
->NewJoin
->NewJoin
->SeqScan
->SeqScan
->SeqScan
->SeqScan
In my algorithm,
each NewJoin node may "mark" its ps_ResultTupleSlot with either red/green. I need that mark to flow in the pipeline so that i can collect them at the top aggregate.
Any hints about how to keep such mark is greatly appreciated.
Thanks a lot,
Ehab
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