Re: [HACKERS] Tupple statistics function

From: Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>
To: "Randal L(dot) Schwartz" <merlyn(at)stonehenge(dot)com>
Cc: "Thurstan R(dot) McDougle" <trmcdougle(at)my-deja(dot)com>, pgsql-general(at)postgresql(dot)org
Subject: Re: [HACKERS] Tupple statistics function
Date: 2001-10-11 20:40:18
Message-ID: 200110112040.f9BKeIv10093@candle.pha.pa.us
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> >>>>> "Thurstan" == Thurstan R McDougle <trmcdougle(at)my-deja(dot)com> writes:
>
> Thurstan> In general EXPLAIN could be expanded to be a command to
> Thurstan> return an explanation and stats of many items. There could
> Thurstan> also be EXPLAIN that only shows fields and EXPLAIN VERBOSE
> Thurstan> that also shows more detail such as stats (as that tends to
> Thurstan> take more time to collect).
>
> It would also be interesting to take everything that psql does and put
> each of them into a view so that it could be queried directly.
> There's no reason that the magic should reside in client-side code.
> It'd also make psql much simpler. :) I mean, why is "\d" anything
> other than "select * from pg_table_view;", with all the logic to
> compute that table in the view code?
>
> Unless having a view on the server is expensive. Is a server view
> expensive if nobody calls it? I mean, it's not maintained like an
> index, is it?

Added to TODO:

* Move psql backslash information into views

Makes sense.

--
Bruce Momjian | http://candle.pha.pa.us
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