Bruce Momjian <bruce@momjian.us> writes:
> If any dimension is written as a slice, i.e. contains a colon, then all
> dimensions are treated as slices.
> Is the the behavior of assuming an entry with no colon is a slice what
> we want, or are we just stuck with it?
Why do you find that surprising? It's either a slice or it isn't,
there's no halfway point. Are you proposing to throw an error if only
some of the subscripts have colons? What would be the point?
> Is there a reason out-of-bounds array accesses behave differently for
> slices and non-slices?
History (although "sloppy original implementation" would do too). I'm
not sure if we should try to clean it up --- there've not been that many
complaints, but I'm sure we'd get complaints from people whose code
stopped working, if we change it.
regards, tom lane