Re: Time-based trigger

From: Szymon Guz <mabewlun(at)gmail(dot)com>
To: Robert Sosinski <rsosinski(at)ticketevolution(dot)com>
Cc: pgsql-general(at)postgresql(dot)org
Subject: Re: Time-based trigger
Date: 2012-09-18 16:03:22
Message-ID: CAFjNrYvKLpO5Dnx11O+2aJt4ifQOjT1VdjGtRMDsXJVEescU-g@mail.gmail.com
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On 18 September 2012 17:59, Robert Sosinski
<rsosinski(at)ticketevolution(dot)com>wrote:

> We have a table, which has items that can be put on hold of 5 minutes
> (this is for an online store) once they are placed into a cart. What we
> need is for this hold to automatically expire after 5 minutes. Right now,
> we put a time stamp into the row (called hold_until) at 5 minutes into the
> future, and select items where hold_until is less then now().
>
> Would it be possible to change this to using a boolean that is set to true
> when item is put on hold, and have something like a time-based trigger
> automatically update the held boolean to false after 5 minutes pass.
>
> Thanks,
>
> --
> Robert Sosinski
>
>
It is not possible right now, however I'd rather create some cron job which
updates the boolean value if needed and runs each minute.

- Szymon

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