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hex integer input

From: Jeremy Drake <pgsql(at)jdrake(dot)com>
To: PostgreSQL Hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: hex integer input
Date: 2007-03-02 07:29:18
Message-ID: (view raw, whole thread or download thread mbox)
Lists: pgsql-hackers
On several occasions I have wanted to input integers in hexadecimal rather
than in decimal in PostgreSQL.  I notice that there is a to_hex function,
but there is not (AFAIK) a way to provide an integer in hexadecimal.

I have written a pure-sql implementation of some functions to input
integers in hexadecimal
(, but it is less than
efficient ;)

Is there some reason why hex input is not currently supported?  What would
be the preferred way to implement it?

1. A function (or one for each int[248]), essentially from_hex(text)

2. Support in the input functions for int[248] for integers that start
with '0[Xx]' as with strtol with base set to 0.

3. Support in the grammar for integral constants 0[Xx][0-9A-Fa-f]+

Thoughts?  Is this a legitimate TODO?

Mr. Cole's Axiom:
	The sum of the intelligence on the planet is a constant; the
	population is growing.


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Subject: Re: hex integer input
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