Thread: absolute or relative updates

I want to write a trigger that logs any changes that are made to a row.
I have the old an new row values, but I am more interested in knowing if
the update was absolute "UPDATE table SET col = 3" or relative "UPDATE
table SET col = col + 2".
Is the a way (any way) to access this type of information ? In any
language available (C, PLPGSQL, etc.)

Thanks
Razvan Radu

am  16.11.2005, um 18:52:25 +0200 mailte pgsql-general@list.coretech.ro folgendes:
>
> I want to write a trigger that logs any changes that are made to a row. I

You ivent the wheel the second time ;-)
http://pgfoundry.org/projects/tablelog/


> have the old an new row values, but I am more interested in knowing if the
> update was absolute "UPDATE table SET col = 3" or relative "UPDATE table
> SET col = col + 2".

If you want restore a table and you have only relative log-entrys, the
you must restore all steps from start to this point.


HTH, Andreas
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