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Re: Slow query through ODBC

This is a discussion on Re: Slow query through ODBC within the pgsql Interfaces odbc forums, part of the PostgreSQL category; --> > > >>Yes, I really don't understand either ! > > >>But even though all use libpq.dll, they might ...


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  #1 (permalink)  
Old 04-16-2008, 02:50 AM
Magnus Hagander
 
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Default Re: Slow query through ODBC

> > >>Yes, I really don't understand either !
> > >>But even though all use libpq.dll, they might not handle the data
> > >>the same way. Mayboe ODBC needs to check for data type, field
> > >>length, etc... and the other frontends do not need this kind of
> > >>information ?
> > >
> > >Hm. That's an interesting observation. When you do a query

> with ODBC,
> > >does it do any "extra queries" automatically on the system tables?
> > >Enable statement logging on the server and see if

> something weird shows up.
> >
> > No, no query on the system tables.
> > I am not very familiar with the log though, maybe Ludek

> could tell us
> > more about that ?

>
> If I remember it right we measure the time problem in
> LIBPQ_send_query function in connection.c (I'm not sure with
> filename).
> Magnus, could you take a look at the code? Maybe you find the problem.
> I'm sorry I have no time for it today.
> BTW we change the code between 08.01.0102 and 08.01.0200 from
> PQexec to PQsendquery and PQgetresult (I write this from my
> head so it could be little different names). But I think
> Arnaud has problem even with 08.01.0102.


That's very interestnig information. Because that was one thing that was
different.

Arnaud, any chance you can giev it a try with 8.01.0200?

//Magnus

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  #2 (permalink)  
Old 04-16-2008, 02:50 AM
Ludek Finstrle
 
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Default Re: Slow query through ODBC

> > If I remember it right we measure the time problem in
> > LIBPQ_send_query function in connection.c (I'm not sure with
> > filename).
> > Magnus, could you take a look at the code? Maybe you find the problem.
> > I'm sorry I have no time for it today.
> > BTW we change the code between 08.01.0102 and 08.01.0200 from
> > PQexec to PQsendquery and PQgetresult (I write this from my
> > head so it could be little different names). But I think
> > Arnaud has problem even with 08.01.0102.

>
> That's very interestnig information. Because that was one thing that was
> different.
>
> Arnaud, any chance you can giev it a try with 8.01.0200?


Please try both, 08.01.0102 and 08.01.0200. Does it differ?

Thanks,

Luf

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  #3 (permalink)  
Old 04-16-2008, 02:50 AM
Arnaud Lesauvage
 
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Default Re: Slow query through ODBC

Ludek Finstrle a écrit :
>> That's very interestnig information. Because that was one thing that was
>> different.
>>
>> Arnaud, any chance you can giev it a try with 8.01.0200?

>
> Please try both, 08.01.0102 and 08.01.0200. Does it differ?


I just tried both versions and there is absolutely no difference.

I'll stick with .0200 of course !

Regards
--
Arnaud


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