| From: | Jonathan Gardner <jgardner(at)jonathangardner(dot)net> |
|---|---|
| To: | "Hicham G(dot) Elmongui" <elmongui(at)cs(dot)purdue(dot)edu> |
| Cc: | pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: OidFunctionCall4 |
| Date: | 2004-08-09 23:22:54 |
| Message-ID: | 200408091622.54833.jgardner@jonathangardner.net |
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| Lists: | pgsql-hackers |
On Thursday 05 August 2004 04:43 pm, Hicham G. Elmongui wrote:
> In "join_selectivity" function (plancat.c), a function call is made to
> "OidFunctionCall4" (fmgr.c), which in turn calls a function pointer.
>
> In need to know what is the actual function being called from
> OidFunctionCall4 if the selectivity of mergejoin is the one required from
> join_selectivity.
>
I'm no expert, but I can tell you from experience with the database that my
first impression is that it is calling a function in the database (stored
in pg_proc table or something like that).
--
Jonathan Gardner
jgardner(at)jonathangardner(dot)net
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