Re: limit based on count(*)

From: Russell Keane <Russell(dot)Keane(at)inps(dot)co(dot)uk>
To: Steve Clark <sclark(at)netwolves(dot)com>, pgsql <pgsql-general(at)postgresql(dot)org>
Subject: Re: limit based on count(*)
Date: 2013-02-22 16:08:52
Message-ID: 8D0E5D045E36124A8F1DDDB463D548557D1618F4D3@mxsvr1.is.inps.co.uk
Views: Raw Message | Whole Thread | Download mbox | Resend email
Thread:
Lists: pgsql-general


> Hello List,
>
> I have a query that counts how many time an event occurs in our event_log these are grouped by the serial number of the device that created the event. I would like to show only the rows where the number of events exceeds some threshold.
>
> simplified query:
> select serial_no, count(*) as "restarts" from event_log where event_mesg ilike 'system sta%' and event_date > current_date - 7 group by serial_no order by restarts;
>
> So what I would like to see is only the serial_nos that had more than X restarts.
>
> Any ideas would be appreciated.
>
> --
> Stephen Clark

Could you not do:

Select * from
(
select serial_no, count(*) as "restarts" from event_log where event_mesg ilike 'system sta%' and event_date > current_date - 7 group by serial_no order by restarts
)
Where "restarts" > X;

Regards,

Russell Keane
INPS

Follow us on twitter | visit www.inps.co.uk

In response to

Browse pgsql-general by date

  From Date Subject
Next Message Maz Mohammadi 2013-02-22 16:13:54 Re: confirming security.
Previous Message Alban Hertroys 2013-02-22 16:05:44 Re: limit based on count(*)