Greg Stark <gsstark@mit.edu> writes:
> Hm, this seems odd
> slo=> select b,b[0],b[0][0] from t;
> b | b | b
> -----------------------------------------------+------------------------+---
> (-75.493906,44.854114),(-75.493906,44.854114) | (-75.493906,44.854114) |
> (1 row)
The problem here is that foo[m][n] is our notation for a
doubly-subscripted array --- and we don't have any concept in the type
system that a one-dimensional array is different from a two-dimensional
array. So the code goes down the primrose path of assuming that "b"
is a 2-D array of points, rather than expecting b[0] to yield a
separate datatype that should be separately subscripted.
We could perhaps hack something for this particular case, since box is
known not to be a general array but only a hardwired one-dimensional
array of points. I don't see a good general solution though.
Any thoughts?
regards, tom lane