Sorry about that. Here's the driver
information and some code. Thanks.
Driver Name: PostgreSQL ANSI
Version: 9.02.01.00
constr = "Driver={PostgreSQL ANSI};
Server=servername; Port=5432; Database=databasename; Uid=username; Pwd=password;"
With conn
.ConnectionString = (constr)
.Open
End With
SQL = "SELECT data FROM pg_largeobject
WHERE loid = " & id & " ORDER BY pageno"
rs.Open SQL, conn
stream.Type = adTypeBinary
stream.Open
' Loop through the recordset and write
the binary data to the stream
While Not rs.EOF
stream.Write rs.Fields("data").Value
rs.MoveNext
Wend
Adam
From:
Andrew Satori <dru@xxxxxxxxxxx>
To:
Adam C Falkenberg <ACFalkenberg@xxxxxxx>,
Date:
09/17/2013 12:02 PM
Subject:
Re:
Using ODBC and VBA to pull data from a large object
You don't say with which driver.
ODBC can be a bit twitchy with data types, and I have seen several drivers
fail when they attempt to read the .Value, some of the driver don't pass
through the adTypeBinarry and allocate a MAX_LENGTH string of 255 for the
read buffer. I haven't tested the current driver from pg.org, but when
I did a few months ago, it correctly handled the .Type field and allocated
the length appropriately.
Some version information and source would make this far easier to resolve.
On Sep 17, 2013, at 11:51 AM, Adam C Falkenberg <ACFalkenberg@xxxxxxx>
wrote:
> Thanks for the response. The example you sent is what I tried
to follow when I originally worked on this. It works great for the
first 255 bytes, but after that it returns 0's. Is there any way
to get all of the data in a large object returned to a recordset (not just
the first 255 bytes)? Thanks again.
>
> Adam
>
>
>
> From: Bret Stern <bret_stern@xxxxxxxxxxxxxxxxxxxxx>
> To: Adam C Falkenberg <ACFalkenberg@xxxxxxx>,
> Cc: pgsql-general@xxxxxxxxxxxxxx
> Date: 09/17/2013 10:06 AM
> Subject: Re: Using ODBC and VBA
to pull data from a large object
>
>
>
> On Tue, 2013-09-17 at 08:32 -0400, Adam C Falkenberg wrote:
> > Good Morning,
> >
> > I had a question about using ODBC with large objects. When
I query
> > the pg_largeobject table and return data to an ADO recordset,
I can
> > only get the first 255 bytes even though the record contains
2048
> > bytes of data (all the bytes after the first 255 show as 0).
When I
> > checked the type of the record, it was a VarBinary. Is
there a way to
> > have all of the data returned to the recordset? Thanks
for any help.
> >
> > Adam
>
>
> Microsofts sample
> http://support.microsoft.com/kb/258038
>
>
