Index: branches/unlabeled/unlabeled-1.7.2/core/kernel/db/db_connection.php
===================================================================
diff -u -r4255 -r4500
--- branches/unlabeled/unlabeled-1.7.2/core/kernel/db/db_connection.php	(.../db_connection.php)	(revision 4255)
+++ branches/unlabeled/unlabeled-1.7.2/core/kernel/db/db_connection.php	(.../db_connection.php)	(revision 4500)
@@ -68,6 +68,13 @@
 		var $debugMode=false;
 		
 		/**
+		 * Last query to database
+		 *
+		 * @var string
+		 */
+		var $lastQuery = '';
+		
+		/**
 		 * Initializes connection class with
 		 * db type to used in future
 		 *
@@ -332,6 +339,7 @@
 		 */
 		function Query($sql,$key_field = null)
 		{
+			$this->lastQuery = $sql;
 			if($this->debugMode) return $this->debugQuery($sql,$key_field);
 			$query_func = $this->getMetaFunction('query');
 			$this->queryID = $query_func($sql,$this->connectionID);
@@ -557,6 +565,8 @@
 		
 		function doUpdate($fields_hash, $table, $key_clause)
 		{
+			if (!$fields_hash) return true;
+			
 			$fields_sql = '';
 			foreach ($fields_hash as $field_name => $field_value) {
 				$fields_sql .= '`'.$field_name.'` = '.$this->qstr($field_value).',';