Michael Monnerie<[email protected]> wrote:
 
> But that is error prone, because when the "filter" table is
> changed to have a new column, the UPDATE statement would not
> contain it. Is there a fail-proof shortcut?
 
You might draw inspiration for a C-based solution from Andrew
Dunstan's "minimal update" code.  A quick search turned up this, but
you might want to read the whole thread and look for possible later
versions of the code:
 
http://archives.postgresql.org/pgsql-hackers/2008-10/msg01111.php
 
-Kevin

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