Gurjeet Singh wrote:
On Wed, May 21, 2008 at 4:47 AM, Karl Denninger <[EMAIL PROTECTED]
<mailto:[EMAIL PROTECTED]>> wrote:
Gurjeet Singh wrote:
On Tue, May 20, 2008 at 11:44 PM, Karl Denninger
<[EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>
<mailto:[EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>>> wrote:
.... assuming the following schema:
create table access (name text, address ip)
I want to construct a SELECT statement which will return ONLY
tuples containing IP and name pairs IF there is an IP that
has two
or more NAMEs associated with it.
I've not figured out how to do this; I can get a list of
all IPs
and names ordered by IP, which I could then parse with a
different
program (e.g. "Select name, address from access order by
address"), but the idea of course is to do it with one SELECT
statement and return only rows that have multiple names
listed for
a given IP.
try this:
select ip, name from access where ip in ( select ip from
access group by ip having count(name) > 2);
heven't execued it, so may need some coaxing. Let me know the
results.
Best regards,
--
A small modification got CLOSE.... I can live with that set of
results..... I think.
I am glad.
Harold had posted almost identical solution one hour before I did (I
had the mail ready to be sent almost after you posted, but lost power
and network connection for about an hour).
Can you please post your modified query, for the record; we might
still be able to get you _exactly_ what you want.
Best regards,
I used an "order by" and also increased the count to "> 2" because there
are a lot of blank "name" records in there as well (but I don't want to
select on those; as an artifact of how the system works there will
usually be a blank name entry for most IP corresponding entries, but not
all)
Karl Denninger ([EMAIL PROTECTED])
http://www.denninger.net
