I'd like to propose the following items be added to the todo list:
(Any thoughts?)
1) Modify composite types to allow ALTER DOMAIN(s) to ADD CONSTRAINT.
2) Allow a since ALTER DOMAIN issue multiple ADD and DROP commands in
a single statement.
On Thu, Jun 3, 2010 at 9:12 AM, Richard Broersma
<richard.broersma@xxxxxxxxx> wrote:
> While playing with domains and composite types, I discovered a problem
> when I tried to alter a domain constraint. I don't believe that this
> problem exists for traditional types.
>
> for example:
>
> broersr=> insert into tags values ((84,'PDSL',1,''),(84,'P',1, ''),'TEST TAG');
> ERROR: invalid regular expression: invalid repetition count(s)
> broersr=> \dD
>
> List of domains
> Schema | Name | Type |
> Modifier | Check
> --------+----------------------+-----------------------+----------------------------------------+-------------------------------------------------------
> ...
> public | tag_function | character varying(4) | not null
> | CHECK (VALUE::text ~ '^[A-Z]{2-4}$'::text)
> ...
> (11 rows)
>
> broersr=> --oops I made a mistake in the definition of my REGEX
> constraint so lets fix it.
>
> broersr=> begin;
> BEGIN
> broersr=> alter domain tag_function drop constraint valid_tag_function;
> ALTER DOMAIN
> broersr=> alter domain tag_function add constraint valid_tag_function
> check(value ~ E'^[A-Z]{2,4}$');
> ERROR: cannot alter type "tag_function" because column "tags"."tag" uses it
> broersr=> rollback;
> ROLLBACK
>
>
> --
> Regards,
> Richard Broersma Jr.
>
> Visit the Los Angeles PostgreSQL Users Group (LAPUG)
> http://pugs.postgresql.org/lapug
>
--
Regards,
Richard Broersma Jr.
Visit the Los Angeles PostgreSQL Users Group (LAPUG)
http://pugs.postgresql.org/lapug
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