Monks,
I'm currently developing a Perl/CGI app that uses an MS Access database. To connect to the database, I'm using the Win32::ODBC module (I'd rather use DBI, but right now I must use Win32::ODBC).

The problem:
The app breaks when I send an SQL statement to the database and it returns more than 246 records. No error message is sent out.

The Code:

my $sqlStatement = "SELECT * FROM databaseName ORDER BY ID";

# Making the database connection
my $dbh = new Win32::ODBC("User")
    or die "Couldn't connect to database:  " . DBI->errorstr;

if ($dbh->Sql($sqlStatement)){
    print "SQL failed!.\n";
    print "Error: " . $dbh->Error() . "\n";
    $dbh->Close();
    exit;
}        
    
my @dates = ();
my %Data = ();

# Loop through the recordset, put the data into our array, then do wit
+h it as we please
while( $dbh->FetchRow() )
{    %Data = $dbh->DataHash();
    push( @dates, $Data{myDateTime} );
}

# Say goodbye to the database
$dbh->Close();
[download]

What I have tried:

1. Using this select statement works: "SELECT TOP 246 datetime FROM myDatabaseName ORDER BY ID".
2. Taking %Data = $dbh->DataHash(); out of the while( $dbh->FetchRow() ){} loop works unless I call FetchRow more than 246 times.
3. I've tried raising the maximum buffer size $dbh->SetMaxBufSize(3024000); with no success.
4. If I neglect to call %Data = $dbh->DataHash(); then the while loop iterates the correct number of times.

Where I think the problem could lie:

1. My own mistake that someone can hopefully point out
2. A Win32::ODBC bug
3. An MS Access bug
4. A server setting preventing large database queries
5. An MS Access setting preventing large database queries

-----------------------------------
Washizu
http://www.bengarvey.com

Corrected sql per author's req. - dvergin 2002-08-31