Re: Converting integer to binary

From: Chris Gamache <cgg007(at)yahoo(dot)com>
To: Bruno Wolff III <bruno(at)wolff(dot)to>, Stephen Quinney <stephen(dot)quinney(at)computing-services(dot)oxford(dot)ac(dot)uk>
Cc: pgsql-sql(at)postgresql(dot)org
Subject: Re: Converting integer to binary
Date: 2004-06-10 20:24:15
Message-ID: 20040610202415.89117.qmail@web13804.mail.yahoo.com
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Once upon a time in PostgreSQL there was a function : bitfromint4 ... Any idea
where it has disappeared to?

You can do

# select B'10101101'::int4;
int4
------
173
(1 row)

but you want to go

# select 173::varbit;

which is what bitfromint4 used to do.

CG

--- Bruno Wolff III <bruno(at)wolff(dot)to> wrote:
> On Thu, Jun 10, 2004 at 14:52:41 +0100,
> Stephen Quinney <stephen(dot)quinney(at)computing-services(dot)oxford(dot)ac(dot)uk> wrote:
> >
> > I have searched around but I cannot see any standard way in PostgreSQL
> > to convert from an integer into a binary representation.
> >
> > Now I have an algorithm to do it so I could write an SQL function, I
> > guess. If there's a standard way to do it though that would be quite nice.
>
> There doesn't seem to currently be a function that does this. to_char
> would be the logical place since that is what is used to convert various
> numeric types to strings with a decimal representation.
>
> ---------------------------(end of broadcast)---------------------------
> TIP 4: Don't 'kill -9' the postmaster



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