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From: Purav Chovatia <[email protected]>
To: legrand legrand <[email protected]>
Cc: [email protected]
Subject: Re: postgresql tuning with perf
Date: Tue, 24 Oct 2017 17:09:01 +0530
Message-ID: <CADrzpjFY3tSdrGwrOMSX7B6bPNY22xnkCjRDMmVG3Fsi+SCh2w@mail.gmail.com> (raw)
In-Reply-To: <[email protected]>
References: <CADrzpjHuvgoTNOQosjHDaJ8YW=jDiwCn8u2h8A1HWRTaPzVc5w@mail.gmail.com>
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Hi Pascal,

Do you mean the sample program that acts as the application, do you want me
to share that? I can do that, but I guess my post will get blocked.

Yes, c1 is the PK. Pls see below:
bmdb=# desc dept_new
      Table "public.dept_new"
 Column |     Type      | Modifiers
--------+---------------+-----------
 c1     | numeric(10,0) | not null
 c2     | numeric(10,0) |
.
.
.
.
.
 c205   | numeric(10,0) |
Indexes:
    "dept_new_pkey" PRIMARY KEY, btree (c1)

bmdb=#

We dont analyze after loading the table. But I guess thats required only if
the query plan is in doubt, lets say its doing a full table scan or alike,
isnt it? That is not the case. The query is using PK index but it just
seems to be slow.

Thanks

On 24 October 2017 at 01:59, legrand legrand <[email protected]>
wrote:

> Hi,
> could you providence the code used with PG ?
> Has table dept_new an index/pk on c1 ?
> Do you analyze this table after loading it ?
>
> Regards
> PAscal
>
>
>
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> Sent from: http://www.postgresql-archive.org/PostgreSQL-performance-
> f2050081.html
>
>
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