On Sat, May 4, 2013 at 11:19 PM, Stas Kelvich <stanconn@gmail.com> wrote:
> I think we have at least 3 data types more or less similar to cube.
> 1) array of ranges > 2) range of arrays > 3) 2d arrays > Semantically cube is most close to array or ranges. However array of ranges have huge storage overhead. > Also we can declare cube as domain on 2d arrays and declare operations of that domain.
But what we should do when arrays in different records have different numbers of element?
We can be faced with absolutely same situation with cube.
test=# create table cube_test (v cube);
CREATE TABLE
test=# insert into cube_test values (cube(array[1,2])), (cube(array[1,2,3]));
INSERT 0 2
In order to force all cubes to have same number of dimensions excplicit CHECK on table is required.
As I remember cube treats absent dimensions as zeros.
