Fix empty BLOB export (bug #1020052).

ChangeLog

@@ -5,6 +5,9 @@ phpMyAdmin - Changelog
 $Id$
 $Source$
 
+2004-09-01 Michal Čihař  <michal@cihar.com>
+    * libraries/export/sql.php: Fix empty BLOB export (bug #1020052).
+
 2004-08-29 Marc Delisle  <lem9@users.sourceforge.net>
     * server_privileges.php: bug 1007870, illegal mix of collations
       for operation UNION

libraries/export/sql.php

@@ -526,6 +526,9 @@ function PMA_exportData($db, $table, $crlf, $error_url, $sql_query)
                 // timestamp is numeric on some MySQL 4.1
                 } elseif ($fields_meta[$j]->numeric && $fields_meta[$j]->type != 'timestamp') {
                     $values[] = $row[$j];
+                // handle empty string special way, just to speed up things and to catch empty BLOBs
+                } elseif (empty($row[$j])) {
+                    $values[] = '\'\'';
                 // a binary field
                 // Note: with mysqli, under MySQL 4.1.3, we get the flag
                 // "binary" for a datetime (I don't know why)