On Mon, Feb 28, 2005 at 17:46:43 +0100, Karsten Hilbert <Karsten.Hilbert@xxxxxxx> wrote: > > There are 5 vaccinations in a given vaccination schedule. > > Patient had 3 shots. > > I want the view to show me that shot 4 and 5 are missing > without having to enter the cardinality of the vaccination in > the original data. For this kind of task you usually want to use a left (or right) join. ---------------------------(end of broadcast)--------------------------- TIP 7: don't forget to increase your free space map settings
