Table cannot be partiotioned using domain in argument

Hi,

This query works fine:

create table t1

(d date)

PARTITION BY RANGE (d);

CREATE TABLE t1_p1 PARTITION OF t1 FOR VALUES FROM ('2000-01-01') TO ('2019-01-01');

Same query, but now (using domain):

CREATE DOMAIN ddate

    AS date;

create table t1

(d ddate)

PARTITION BY RANGE (d);

CREATE TABLE t1_p1 PARTITION OF t1 FOR VALUES FROM ('2000-01-01') TO ('2019-01-01');

The follow error occur:

SQL Error [42804]: ERROR: specified value cannot be cast to type ddate for column "d"

  Detalhe: The cast requires a non-immutable conversion.

  Dica: Try putting the literal value in single quotes.

  Posição: 55

I cannot use domain in this case?

Thanks in advance!

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