On Wed, Jun 18, 2008 at 02:04:14PM +0200, David wrote: > 1) table1 becomes a view of an updated table, with a 'WHERE field4 IS > NULL' clause. > > Problem with this is that some RDBMS (Postgresql specifically) don't > let you run update statements on views. Given 1) the view will be "fairly uncomplicated" and hence "fairly straightforward" ON INSERT/UPDATE/DELETE rule can likely be added to it allowing for an apparently writable view. Karsten -- GPG key ID E4071346 @ wwwkeys.pgp.net E167 67FD A291 2BEA 73BD 4537 78B9 A9F9 E407 1346