It's currently (9.2) not possible to define DEFERRABLE NOT NULL constr=
aints. Meaning the following is not valid:
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CREATE TABLE my_table(
id varchar PRIMARY KEY,
stuff_id BIGINT NOT NULL DEFERRABLE INITIALLY DEFERRED
);
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While it's possible to define a trigger to enforce this, like this:</d=
iv>
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CREATE CONSTRAINT TRIGGER my_table_t AFTER INSERT OR UPDATE ON onp_crm=
_relation DEFERRABLE INITIALLY DEFERRED
FOR EACH ROW EXECUTE PROCEDURE my_table_check_stuff_id_nn_tf();
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And have the my_table_check_stuff_id_nn_tf() raise an exception=
if "stuff_id" is null.
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Having deferrable constraints on FKs and UKs is really nice and when w=
orking with ORMs it's almost impossible to not use this feature.
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Are there any plans to make NOT NULL constraints deferrable so one can=
avoid the trigger "boilerplate"?
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--
Andreas Joseph Krogh <andreak@officenet.no>=C2=A0 =C2=A0 =C2=A0 mob: =
+47 909 56 963
Senior Software Developer / CTO - OfficeNet AS - http://www.officenet.no
Public key: http://home.officenet.no/~andreak/public_key.asc=
