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pg_get_serial_sequence Strangeness/Unreliable?

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Hello everyone,

I'm using "PostgreSQL 8.2.5 on amd64-portbld-freebsd6.1, compiled by GCC cc (GCC) 3.4.4 [FreeBSD] 20050518"

The issue, is that when I run pg_get_serial_sequence on a particular table/column it returns NULL.

Here are my tests:

simplyas_associations=> \d news_status
                                     Table "public.news_status"
Column | Type | Modifiers ---------------+----------------------- +------------------------------------------------------------ status_id | integer | not null default nextval('status_status_id_seq'::regclass)
 newsletter_id | integer               | not null
 status        | boolean               | not null
 indate        | character varying(15) | not null
Indexes:
    "status_pkey" PRIMARY KEY, btree (status_id)
    "status_newsletter_id" btree (newsletter_id)

simplyas_associations=> select pg_get_serial_sequence('news_status','status_id');
 pg_get_serial_sequence
------------------------

(1 row)

So, for fun I added a new column to this table , and ran pg_get_serial_sequence there

simplyas_associations=> alter table news_status add column test_id serial; NOTICE: ALTER TABLE will create implicit sequence "news_status_test_id_seq" for serial column "news_status.test_id"
ALTER TABLE
simplyas_associations=> select pg_get_serial_sequence('news_status','test_id');
     pg_get_serial_sequence
--------------------------------
 public.news_status_test_id_seq
------------------------

(1 row)

So my new column works. The only next step I could think of was to compare my 2 sequences with \d, turns out their attributes are both identical.

Ideas?

Thanks

Jeff MacDonald

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