Work even if no db set.

ChangeLog

@@ -8,6 +8,7 @@ $Source$
 2005-10-08 Michal Čihař  <michal@cihar.com>
     * libraries/display_export.lib.php: Use same formatting for all options.
     * libraries/import/ldi.php: This one does not handle charset conversion.
+    * sql.php: Work even if no db set.
 
 2005-10-07 Marc Delisle  <lem9@users.sourceforge.net>
     * libraries/check_user_privileges.lib.php: bug #1313821, dbname containing a 

sql.php

@@ -364,7 +364,9 @@ else {
         $full_sql_query      = $sql_query;
     } // end if...else
 
-    PMA_DBI_select_db( $db );
+    if (isset($db)) {
+        PMA_DBI_select_db($db);
+    }
 
     // If the query is a DELETE query with no WHERE clause, get the number of
     // rows that will be deleted (mysql_affected_rows will always return 0 in