| From: | David Rowley <david(dot)rowley(at)2ndquadrant(dot)com> |
|---|---|
| To: | Rajkumar Raghuwanshi <rajkumar(dot)raghuwanshi(at)enterprisedb(dot)com> |
| Cc: | Beena Emerson <memissemerson(at)gmail(dot)com>, Alvaro Herrera <alvherre(at)alvh(dot)no-ip(dot)org>, Amit Langote <Langote_Amit_f8(at)lab(dot)ntt(dot)co(dot)jp>, Robert Haas <robertmhaas(at)gmail(dot)com>, amul sul <sulamul(at)gmail(dot)com>, "pgsql-hackers(at)postgresql(dot)org" <pgsql-hackers(at)postgresql(dot)org>, Dilip Kumar <dilipbalaut(at)gmail(dot)com> |
| Subject: | Re: [HACKERS] Runtime Partition Pruning |
| Date: | 2018-02-21 11:58:31 |
| Message-ID: | CAKJS1f-8Qiy=_bkUHqqm9m-5uCu-g73CRhzYBBtNRDoXLaMP_Q@mail.gmail.com |
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| Lists: | pgsql-hackers |
On 21 February 2018 at 22:45, Rajkumar Raghuwanshi
<rajkumar(dot)raghuwanshi(at)enterprisedb(dot)com> wrote:
> select count(*) from prt1 x where (x.a,x.b) in (select t1.a,t2.b from prt1
> t1,prt2 t2 where t1.a=t2.b)
> and (x.c) in (select t3.c from plt1 t3,plt2 t4 where t3.c=t4.c);
Thanks for the test case.
It seems like the x.c Param for some reason has a ParamId of 0. I need
to go learn a bit more about Params to understand why this is.
--
David Rowley http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Training & Services
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