partitoning expert : Partitonning with specialization of one column type

[Rémi Cura <remi.cura@xxxxxxxxx>]

Hey, postgres 9.3 here.

for partitionning expert.

I have several table child with columns (gid serial, patch pcpatch(n))

where n may change depending on the tables, and pcpatch is a type from pgpointcloud extension

(here is the definition)

-----
CREATE TYPE pcpatch
   (INPUT=pcpatch_in,
       OUTPUT=pcpatch_out,
       RECEIVE=-,
       SEND=-,
       TYPMOD_IN=pc_typmod_in,
       TYPMOD_OUT=pc_typmod_out,
       ANALYZE=-,
       CATEGORY='U', DEFAULT='',
       INTERNALLENGTH=-1, ALIGNMENT=int4, STORAGE=MAIN);
-----

The question is, how do I create an inheritance scheme?

If the father table is

CREATE TABLE father(

gid serial,

patch pcpatch

) ;

trying to put child_1, child_2 ... to inherit father raise an error

----
child table "test_child_1" has different type for column "patch"
----

So my question is, how would it be possible (if at all) to inherit of father table, while specializing the type of father table in child table?

Thanks,

Cheers,

Rémi-C