Changed the behaviour of Active Record's update() to make the WHERE clause optional (#3395)
diff --git a/system/database/drivers/mysqli/mysqli_driver.php b/system/database/drivers/mysqli/mysqli_driver.php
index 9e7cc0c..31c2711 100644
--- a/system/database/drivers/mysqli/mysqli_driver.php
+++ b/system/database/drivers/mysqli/mysqli_driver.php
@@ -544,7 +544,11 @@
 		

 		$orderby = (count($orderby) >= 1)?' ORDER BY '.implode(", ", $orderby):'';

 	

-		return "UPDATE ".$this->_escape_table($table)." SET ".implode(', ', $valstr)." WHERE ".implode(" ", $where).$orderby.$limit;

+		$sql = "UPDATE ".$this->_escape_table($table)." SET ".implode(', ', $valstr);

+		$sql .= ($where != '' AND count($where) >=1) ? " WHERE ".implode(" ", $where) : '';

+		$sql .= $orderby.$limit;

+		

+		return $sql;

 	}