From: Oliveiros C, <oliveiros.cristina@marktest.pt>
To: pgsql-sql@postgresql.org
Subject: Is there any function to test for numeric ips?
Date: Fri, 11 Dec 2009 16:05:34 -0000
Message-ID: <E94D918326D044C69895D829038E31B2@marktestcr.marktest.pt> (raw)
Dear All,
I have a table with host names and some happen to be numeric IPs.
I would like to be able to filter out the later.
Is there any function pre-defined in the system that can test a particular text type value to see if it is a numeric ip?
Something that returns true if applied to '192.168.1.1' but false if applied to 'videos.sapo.pt' ?
I considered NOT LIKE '%.%.%.%' but I'm affraid it will filter out host names like 'www.google.com.br'
I've realized that, for ex, inet 'x.x.x.x' will fail if the input is not a numeric IP,
is there any simple and direct way to somewhat trap that error and convert it to a false value that can be used
in a WHERE clause?
This is not to be included in a program, I'm just interested in a query that I can do directly to the back end on a client program like pgAdmin.
I know very little ( nothing, actually...) about function creation in pgplsql, so, before investing in learning, I would like to know if there is any built in function that does the trick, so I can skip the (potential) learning curve.
So far, I've googled up and down but found none
Thanx in advance for your kind and valuable help
Best,
Oliveiros
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To: pgsql-sql@postgresql.org
Cc: oliveiros.cristina@marktest.pt
Subject: Re: Is there any function to test for numeric ips?
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