diff --git a/src/MySQL.php b/src/MySQL.php
index ae86108..48f9cef 100644
--- a/src/MySQL.php
+++ b/src/MySQL.php
@@ -8,6 +8,7 @@
 	use mysqli_stmt;
 	use mysqli_result;
 
+	use vlw\MySQL\Order;
 	use vlw\MySQL\Operators;
 
 	require_once "Order.php";
@@ -179,13 +180,12 @@
 				return $this;
 			}
 
-			$test = array_map(fn(Order|string $kw): Order => $kw instanceof Order ? $kw : Order::tryFrom($kw), array_values($order_by));
-
+			// Assign Order Enum entries from array of arrays<Order|string>
+			$orders = array_map(fn(Order|string $order): Order => $order instanceof Order ? $order : Order::tryFrom($order), array_values($order_by));
 			// Create CSV string with Prepared Statement abbreviations from length of fields array.
-			//$sql = array_map(fn(string $column, Order|string $kw): string => "`{$column}` " . Order::tryFrom($kw), array_keys($order_by), array_values($order_by));
-			//$sql = implode(",", $sql);
+			$sql = array_map(fn(string $column, Order|string $order): string => "`{$column}` " . $order->value, array_keys($order_by), $orders);
 
-			$this->order_by = $sql;
+			$this->order_by = implode(",", $sql);
 			return $this;
 		}