Index: trunk/core/kernel/db/db_connection.php
===================================================================
diff -u -N -r932 -r944
--- trunk/core/kernel/db/db_connection.php	(.../db_connection.php)	(revision 932)
+++ trunk/core/kernel/db/db_connection.php	(.../db_connection.php)	(revision 944)
@@ -83,6 +83,10 @@
 			{
 				$this->errorHandler = Array(&$this,'handleError');
 			}
+			else 
+			{
+				$this->errorHandler=$errorHandler;
+			}
 		}
 		
 		/**
@@ -357,8 +361,29 @@
 		
 		function debugQuery($sql, $key_field = null)
 		{
+			global $debugger;
 			$query_func = $this->getMetaFunction('query');
+			
+			// set 1st checkpoint: begin
+			$isSkipTable=true;
+			$profileSQLs=defined('DBG_SQL_PROFILE')&&DBG_SQL_PROFILE;
+			if($profileSQLs)
+			{
+				$isSkipTable=isSkipTable($sql);
+				if(!$isSkipTable)
+				{
+					$queryID=$debugger->generateID();
+					$debugger->profileStart('sql_'.$queryID, $debugger->formatSQL($sql) );
+				}
+			}
+			// set 1st checkpoint: end
+			
 			$this->queryID = $query_func($sql,$this->connectionID);
+			
+			// set 2nd checkpoint: begin
+			if(!$isSkipTable) $debugger->profileFinish('sql_'.$queryID);
+			// set 2nd checkpoint: end
+			
 			if( is_resource($this->queryID) )
 			{
 				$ret = Array();