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From: Lee Hachadoorian <lee.hachadoorian@gmail.com>
To: Pavel Stehule <pavel.stehule@gmail.com>
Cc: pgsql-sql@postgresql.org
Subject: Re: LIMIT BASED ON PERCENT
Date: Wed, 18 Nov 2009 14:33:53 -0500
Message-ID: <5ab13580911181133k6204bbb0h33a695e618bfa02b@mail.gmail.com> (raw)
In-Reply-To: <162867790911181130n74be837eo29e3c408724c88f7@mail.gmail.com>
References: <af7271950911181112h574da17euf94d9640ec7680df@mail.gmail.com>
	<5ab13580911181121g6e89759doa6c6ea6557424f71@mail.gmail.com>
	<af7271950911181124i2a309729q2271d9f878e42f3d@mail.gmail.com>
	<200911182027.08857.guillaume@lelarge.info>
	<162867790911181130n74be837eo29e3c408724c88f7@mail.gmail.com>

On Wed, Nov 18, 2009 at 2:30 PM, Pavel Stehule <pavel.stehule@gmail.com> wrote:
> yes, and don't use 20%.
>
> select * from foo order by somecol limit (select (count(*)*0.2)::int from foo)
>
> Regards
> Pavel

Is this faster on a large table? Because (select (count(*)*20/100)) worked fine.

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