Re: 'default nextval()' loses schema-qualification in dump ?

From: Arnaud Lesauvage <arnaud(dot)listes(at)codata(dot)eu>
To: Hiroshi Inoue <inoue(at)tpf(dot)co(dot)jp>
Cc: pgsql-odbc(at)postgresql(dot)org
Subject: Re: 'default nextval()' loses schema-qualification in dump ?
Date: 2010-07-09 07:40:53
Message-ID: 4C36D285.3090508@codata.eu
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Le 9/07/2010 5:31, Hiroshi Inoue a écrit :
> Arnaud Lesauvage wrote:
>> Le 7/07/2010 9:41, Richard Huxton a écrit :
>>> On 07/07/10 07:47, Arnaud Lesauvage wrote:
>>>> Le 6/07/2010 17:17, Tom Lane a écrit :
>>>>> Arnaud Lesauvage<arnaud(dot)listes(at)codata(dot)eu> writes:
>>>>>> As you have understood, I am not very savvy about postgresql's
>>>>>> internals, but from what you say my guess is that the problem is
>>>>>> int the
>>>>>> psqlODBC is getting the default value of the sequence ?
>>>
>>>> [9.125]conn=095C4198, query='select n.nspname, c.relname, a.attname,
>>>> a.atttypid, t.typname, a.attnum, a.attlen, a.atttypmod, a.attnotnull,
>>>> c.relhasrules, c.relkind, c.oid, d.adsrc, case t.typtype when 'd' then
>>>> t.typbasetype else 0 end, t.typtypmod from (((pg_catalog.pg_class c
>>>> inner join pg_catalog.pg_namespace n on n.oid = c.relnamespace and
>>>> c.relname = E'mytable' and n.nspname = E'myschema') inner join
>>>> pg_catalog.pg_attribute a on (not a.attisdropped) and a.attnum> 0 and
>>>> a.attrelid = c.oid) inner join pg_catalog.pg_type t on t.oid =
>>>> a.atttypid) left outer join pg_attrdef d on a.atthasdef and d.adrelid =
>>>> a.attrelid and d.adnum = a.attnum order by n.nspname, c.relname,
>>>> attnum'
>>>
>>> This is psqlODBC getting the sequence name (if you run this query it's
>>> the adsrc column). If I remember correctly, that's supposed to be the
>>> human-readable version of an expression and preserved *as entered by the
>>> user* (or pg_restore in your case).
>>>
>>> If you start psql with the "-E" option and do \d myschema.mytable you'll
>>> be able to see how it gets the sequence-name. About half-way down the
>>> list of queries it runs you'll see a reference to pg_get_expr(...) -
>>> that turns an internal representation into a useful usable one.
>>>
>>> I don't know why psqlODBC isn't using that. The function has been around
>>> for a while. Hmm - it's present back in 7.4 although it's not used in \d
>>> - that does reference adsrc directly.
>>>
>>> Just grabbed the source download for the latest version and it still
>>> looks like it's using adsrc (I just searched for that and pg_get_expr).
>>> There should probably be a change in info.c around line 2091 to add a
>>> check for a recent version of PG (8+) and use pg_get_expr. Check on the
>>> odbc mailing-list - there may be an updated version available for you to
>>> test.
>>>
>>
>>
>> I haven't found a version more recent than the one I am using.
>> Is this thread enough for a bug report, or should a new one be opened ?
>>
>> I don't think I know enough of either psqlODBC's internals to explain
>> the problem to the developers, and I am not sure this thread will get
>> their attention.
>
> Could you please try the drivers on testing for 8.4.0201 at
> http://www.geocities.jp/inocchichichi/psqlodbc/index.html
> ?

It works fine Hiroshi, thanks a lot !
Do you know when a release as an msi installer will be available ? We
deploy this driver through an active directory policy.

Thanks again !

Regards,
Arnaud Lesauvage

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