Oracle-L: Sql question : use of SUBSTR/INSTR functions

From: Johan Muller <c-johan.muller_at_wcom.com>
Date: Wed, 16 Oct 2002 12:32:05 -0800
Message-ID: <F001.004EB412.20021016123205@fatcity.com>

Help!

Anybody have a quick and dirty to parse the 4 octets of a typical IP address into 4 separate values. I will insert these into a table where database checks may verify that the data is in fact a number and also part of a valid ip range (the second thru fourth octets cannot be higher than 255. The source data is very dirty and often fat-fingered, hence the painful solution):

e.g.: 127.0.0.1 into 127 (val 1), 0 (val 2), 0 (val 3) and 1 (val 4).

I have used various flavors of substr/instr to unravel this, but the varying length of the octets (up to 3 bytes) defeats my rudimentary sql coding skills. I probably have to attack the IP with decode, and any input will be very welcome.

Running V 8.1.6.

--

Please see the official ORACLE-L FAQ: http://www.orafaq.com
--

Author: Johan Muller
INET: c-johan.muller_at_wcom.com

Fat City Network Services    -- 858-538-5051 http://www.fatcity.com
San Diego, California        -- Mailing list and web hosting services
---------------------------------------------------------------------

To REMOVE yourself from this mailing list, send an E-Mail message to: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing). Received on Wed Oct 16 2002 - 15:32:05 CDT