no primary key on self designed type

Hello,

create type inrecord (
internallength=VARIABLE,
input=inr_in,
output=inr_out
);

create table test (
data inrecord not null primary key
);
... result ...
ERROR: Can't find a default operator class for type 268128.

how can I define the default operator class ??
--
mit freundlichem Gruss -- regards
,-,
| | Thomas Drillich <drillich(at)uniserve(dot)de>
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