Re: Functions performed on intervals - Mailing list pgsql-sql

From Josh Berkus
Subject Re: Functions performed on intervals
Date
Msg-id web-84978@davinci.ethosmedia.com
Whole thread Raw
In response to RE: Functions performed on intervals  (Jimmie Fulton <JFulton@ehso.emory.edu>)
List pgsql-sql
Jimmie,

> Thanks for your response,

You're welcome.

> What you are saying here is that I will indeed need an external timed
> event
> (cron) to update a field/history table of some fashion, correct?
> This is my
> main question.

Yes.  Absolutely you will.  Unless, of course, your users are already
forced to go though a manual month-end procedure, in which case it could
be tied to that.

This is actually really easy to set up:

1. Create a shell script that calls psql and a SQL script in 2;
2. Create a SQL script that calls all of the functions that you want to
run on a (daily/weekly/monthly) basis.
3. Create a cron item that calls the shell script (1.).

Handling errors etc. obviously adds a layer of complexity to the
scripting.  I also have the functions write to a schedule_log table
showing what they've done.

-Josh

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