Index: trunk/core/kernel/db/db_connection.php
===================================================================
diff -u -N -r7855 -r7991
--- trunk/core/kernel/db/db_connection.php	(.../db_connection.php)	(revision 7855)
+++ trunk/core/kernel/db/db_connection.php	(.../db_connection.php)	(revision 7991)
@@ -573,5 +573,26 @@
 
 			return $this->ChangeQuery($sql);
 		}
+		
+		/**
+		 * Allows to detect table's presense in database
+		 *
+		 * @param string $table_name
+		 * @return bool
+		 */
+		function TableFound($table_name)
+		{
+			static $table_found = Array();
+			
+			if (!preg_match('/^'.preg_quote(TABLE_PREFIX, '/').'(.*)/', $table_name)) {
+				$table_name = TABLE_PREFIX.$table_name;
+			}
+			
+			if (!isset($table_found[$table_name])) {
+				$table_found[$table_name] = $this->Query('SHOW TABLES LIKE "'.$table_name.'"');
+			}
+			
+			return $table_found[$table_name];
+		}
 	}
 ?>
\ No newline at end of file