Re: pg_dump issue : Cannot drop a non-existent(?) trigger

From: Devrim GUNDUZ <devrim(at)gunduz(dot)org>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: pgsql-hackers(at)postgresql(dot)org
Subject: Re: pg_dump issue : Cannot drop a non-existent(?) trigger
Date: 2005-03-26 10:14:28
Message-ID: Pine.LNX.4.61.0503260921450.4326@emo.org.tr
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Hi,

On Fri, 25 Mar 2005, Tom Lane wrote:

>>> Does "\d pg_trigger" show that the tgargs column is of type bytea?
>
>> Umm no:
>
>> tgnargs | smallint | not null
>
> tgargs, not tgnargs.

Ooops, sorry. Ok, tgargs is of type bytea.

>>> Also, get the OID for this pg_trigger row and see if it shows up in
>>> objid or refobjid of any rows of pg_depend
>
>> Yes it is there
>
>> prod=# SELECT * from pg_depend WHERE objid =39053;
>> - -[ RECORD 1 ]------
>> classid | 16412
>> objid | 39053
>> objsubid | 0
>> refclassid | 1259
>> refobjid | 37564
>> refobjsubid | 0
>> deptype | a
>> - -[ RECORD 2 ]------
>> classid | 16412
>> objid | 39053
>> objsubid | 0
>> refclassid | 1259
>> refobjid | 37577
>> refobjsubid | 0
>> deptype | a
>
> Hmph. Those should be 'i' references to the foreign key constraint,
> not 'a' references to the relations. I suspect this database was
> carried forward from an ancient (pre-7.3) dump that defined the triggers
> by "CREATE CONSTRAINT TRIGGER" instead of "ALTER ADD FOREIGN KEY".

I haven't coded the application but AFAIKit was developed using 7.4 and
7.5(CVS); and we installed database on 8.0.1... This is a new app.

As a reminder, we ran pg_dump successfully before. After then we did
nothing on schemas, we didn't upgrade db server, etc.

> Have you ever run contrib/adddepend to update the definitions to be
> proper constraints?

Now I did, but the found constraints are not related to our problem... :(

I'll try to drop trigger on Monday night and see what will happen. We have
no up2date backup, except WAL logs... :(

Regards,

- --
Devrim GUNDUZ
devrim~gunduz.org, devrim~PostgreSQL.org, devrim.gunduz~linux.org.tr
http://www.tdmsoft.com http://www.gunduz.org
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