Обсуждение: Re: PostgreSQL / ODBC / Ms-SQL 2000

> -----Original Message-----
> From: pgsql-odbc-owner@postgresql.org
> [mailto:pgsql-odbc-owner@postgresql.org] On Behalf Of Dave Page
> Sent: 27 September 2005 21:11
> To: Thomas Knoop
> Cc: pgsql-odbc@postgresql.org
> Subject: Re: [ODBC] PostgreSQL / ODBC / Ms-SQL 2000
>
>
> > When I look at the properties of the linked server in Ms-SQL
> > I can see that
> > the catalog column is empty. I think MS-SQL expects a
> > (default?) value here,
> > and thats why we cannot proceed creating a view.
>
> If SQL is expecting a value here even though the driver reports that
> catalogs are not supported by the database then it's broken.
> I'll see if
> I can find some time to try to work out whats going on in the week. I
> can't promise anything though.

According the SQL docs, the correct syntax is something like:

SELECT * FROM MYLINKEDSERVER..[public].mytable;

However I can't get this to work. This does seem fairly common though,
with other users complaining of the same issues with Oracle. The
commonly suggested solution is to use:

SELECT * FROM OPENQUERY(MYLINKEDSERVER, 'SELECT * FROM public.mytable')

Which works perfectly afaict, apart from a minor issue with columns of
type 'name', for which I've just committed a fix to CVS.

Regards, Dave

Hi Dave,

First let me thank you for your input!

> > When I look at the properties of the linked server in Ms-SQL I can
> > see that the catalog column is empty. I think MS-SQL expects a
> > (default?) value here,
> > and thats why we cannot proceed creating a view.
>
> If SQL is expecting a value here even though the driver reports that
> catalogs are not supported by the database then it's broken.
> I'll see if
> I can find some time to try to work out whats going on in the week. I
> can't promise anything though.

> According the SQL docs, the correct syntax is something like:

> SELECT * FROM MYLINKEDSERVER..[public].mytable;

> However I can't get this to work. This does seem fairly common though,
> with other users complaining of the same issues with Oracle. The commonly
> suggested solution is to use:

> SELECT * FROM OPENQUERY(MYLINKEDSERVER, 'SELECT * FROM public.mytable')

> Which works perfectly afaict, apart from a minor issue with columns of
> type 'name', for which I've just committed a fix to CVS.

As far I can see this tries to open the table complete, and fails in my case
cause i have a ADSL connection and it tries to fetch all the records....

This looks to me as a very slow workaround.

Regards,
  Thomas.