FINALLY retrieved my ps content from the db, however, I have discovered that I'm also concatenating the data inserted into the table. Selecting is fixed...back to working on getting the data in there. I've applied the blob update code from the DBD::Sybase documentation you linked, but now I'm getting:

DBD::Sybase::st syb_ct_send_data failed: Server message number=102 sev
+erity=15 state=1 line=1 server=SQL2008\SQL2008
text=Incorrect syntax near '0x00000000000000000000000000000000'.
[download]

sub printTransaction{
...
my $statement ="insert into PrintedChecks (Checkid,[datetime],id,print
+edby,data)
                        values (?,?,?,?,cast(? as varbinary(MAX)))
";
my $sth=$db->prepare($statement);

eval{
  $sth->execute(($checkid,$now,$id,$userid,''));
};
if ($@){
  $db->rollback;
  return 0;
}
$db->commit;

$sth = $db->prepare("select data from printedchecks where id = '$id'")
+;
$sth->execute;
while($sth->fetch) {$sth->syb_ct_data_info('CS_GET', 1);}
$sth->syb_ct_prepare_send();
my $binary = pack("b*", $print); #Is this right???
$sth->syb_ct_data_info('CS_SET', 1, {total_txtlen => length($binary), 
+log_on_update => 0});
   
$sth->syb_ct_send_data($binary, length($binary));
$sth->syb_ct_finish_send();
...
}
[download]

my $binary = pack("b*", $print); #Is this right???

pack("b*",...) packs a "bit string", i.e. a string consisting of "0" and "1" (ASCII 48 and 49), e.g.

print pack("b*", "011001101111011011110110")  # --> "foo"
[download]

but Postscript content doesn't consist of solely ASCII zeros and ones, so this is most likely not correct.

My guess would be that you don't need to do anything with $print.  Just treat it as binary data (any string is "binary" in the wider sense, even if it's ASCII/7-bit only), i.e. use $print where you now have $binary.

Hmmmm...well if I pass an unchanged $print to the server, I get the exact same error. I even played around some more to finally get $print into true binary (took me awhile to finally figure out pack), but once again, I get the exact same error. How can I be getting the exact same error when I change the content???