| From: | Dilip Kumar <dilipbalaut(at)gmail(dot)com> |
|---|---|
| To: | Jinhua Luo <luajit(dot)io(at)gmail(dot)com> |
| Cc: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, pgsql-hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Is it possible for postgres_fdw to push down queries on co-located tables? |
| Date: | 2018-09-18 16:10:16 |
| Message-ID: | CAFiTN-u5ygUot+kKRx8X7QjjO4QBG0oH4-HPcRUfFWoVyXrP3A@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Tue, Sep 18, 2018 at 7:50 PM, Jinhua Luo <luajit(dot)io(at)gmail(dot)com> wrote:
> I was testing PG10.
>
> Sorry, the example is not so proper. I just think even if it's a
> simple example, e.g. join two co-located tables, the planner should
> work out to push down it. Can you confirm the postgresql could detect
> co-located tables on the same foreign server and push down queries on
> them? Could you give an actual example or point out the relevant
> source code paths for reference?
>
You can check "postgresGetForeignJoinPaths" function or you can refer
commit "e4106b2528727c4b48639c0e12bf2f70a766b910".
--
Regards,
Dilip Kumar
EnterpriseDB: http://www.enterprisedb.com
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