Robert Haas <robertmhaas@gmail.com> writes:
> So let's try to hammer something out now. The obvious thing that
> occurs to me is to have a column in the catalog that is a 2-D array of
> text, with the first element of each array being something like "tag"
> or "subtag" (i.e. event_trigger_variable) and the remaining array
> elements being a list of legal values. That is:
> WHEN thingy IN thingy IN ('item1', 'item2') AND otherthingy IN ('foo', 'bar')
> would be represented as this array:
> {{thingy,item1,item2},{otherthingy,foo,bar}}
Um, doesn't that require nonrectangular arrays? Or is there some
non-obvious reason why the lists of legal values will always be all the
same length?
regards, tom lane
