Re: syntax troubles using "deferrable initially deferred" - Mailing list pgsql-general

From Tom Lane
Subject Re: syntax troubles using "deferrable initially deferred"
Date
Msg-id 21960.1252970337@sss.pgh.pa.us
Whole thread Raw
In response to syntax troubles using "deferrable initially deferred"  ("Gauthier, Dave" <dave.gauthier@intel.com>)
Responses Re: syntax troubles using "deferrable initially deferred"
List pgsql-general
"Gauthier, Dave" <dave.gauthier@intel.com> writes:
> create table templates
> (
>   template text,
>   constraint template_not_null_check (template is nit null) deferrable initially deferred);

> ERROR  syntax error at or near "DEFERRABLE"
> LINE 4: ...nt template_not_null_check (template is not null) DEFERRABLE...

Sorry, there are no deferrable check constraints in Postgres.
We only handle deferrable foreign keys (8.5 will have deferrable
unique also).  By and large there isn't any good reason that I
can see for a deferrable check constraint --- you might as well
check the row when it goes in.  (If you are trying something cute
that depends on the timing of the check, be advised that it probably
wouldn't work reliably anyway.)

            regards, tom lane

pgsql-general by date:

Previous
From: David Kerr
Date:
Subject: PostgreSQL + 64 bit + performance
Next
From: "Johnson, Trevor"
Date:
Subject: PostgreSQL on Windows Server 2003 for Moodle