| From: | Gavin Flower <GavinFlower(at)archidevsys(dot)co(dot)nz> |
|---|---|
| To: | pgsql-hackers(at)lists(dot)postgresql(dot)org |
| Subject: | Re: |
| Date: | 2018-01-09 19:02:09 |
| Message-ID: | 18fee931-c9fe-8372-bff0-25664f5477f8@archidevsys.co.nz |
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| Lists: | pgsql-hackers |
On 10/01/18 07:52, Walter Cai wrote:
> Hi,
>
> I (a graduate student) am currently trying to modify a postgres
> instance slightly to incorporate my modified cardinality estimates. In
> order to run these experiments I'm hoping to access the raw values for
> selections predicates from within the calc_joinrel_size_estimate
> method (in costsize.c). For example, if the restriction
>
> WHERE name_attr = "example_str"
>
> appears in the query, I'd like to get the "name_attr" and
> "example_str" values. If possible, I would very much appreciate the help.
>
> Best, Walter
Very good idea to include a subject!
Blank subjects look like spam,...
Cheers,
Gavin
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