FreeTDS Development Group

["Thompson, Bill D (London)" <bill_d_thompson AT ml.com>]

This seems to work....

create table #bill (col1 int, col2 image)

insert #bill values (2, 0x10101010101010101010 )
insert #bill values (2, 0x20202020202020202020 )

select * from #bill

update a
set    a.col2 = b.col2
from   #bill a, #bill b
where  a.col1 = 1 
and    b.col1 = 2

select * from #bill

-----Original Message-----
From: freetds-bounces AT lists.ibiblio.org 
[mailto:freetds-bounces AT lists.ibiblio.org] On Behalf Of Maciej Grzywocz
Sent: 28 June 2005 15:01
To: freetds AT lists.ibiblio.org
Subject: [freetds] Image data type in perl/mssql


Hi,

I'm trying to manage some 'image' type fields using Perl and MSSQL2000
server. What I get if I use DBD::Sybase driver is a hex representation
of the data. I use
pack 'H*', $data
to convert it to binary.
However, I am unable to store every binary data, because it must be
stored as a string, so when it contains a zero character (0x00), the SQL
query gets broken.

What I actually need is to copy the binary data from one to another row,
so they don't need to be fully retrieved by my application.
But executing
UPDATE files SET preview = (SELECT preview FROM files WHERE id = 2)
  WHERE id = 1;
causes an error:
"The text, ntext, and image data types are invalid in this subquery or
aggregate expression"

Can you help me with this or give another solution?

TIA,

-- 
 Maciej Grzywocz <emgie AT netinfo.pl>
 Netinfo: Dział Rozwoju Produktów
 tel: 32.3460490 fax: 32.3460492
 http://www.netinfo.pl/
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