From 633955d95fd0e85f0380bd9c63211fa4859c8eaa Mon Sep 17 00:00:00 2001
From: Thastertyn <thastertyn@gmail.com>
Date: Thu, 7 Mar 2024 22:40:30 +0100
Subject: [PATCH] Add trigger to automatically calculate subtotal price of cart

---
 shop.sql | 16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)

diff --git a/shop.sql b/shop.sql
index b085cde..2cbea62 100644
--- a/shop.sql
+++ b/shop.sql
@@ -130,4 +130,18 @@ begin
 	where id = old.cart_id;
 end;
 //
-delimiter;
\ No newline at end of file
+delimiter;
+
+delimiter //
+create trigger calculate_price_subtotal
+before insert on cart_item
+for each row
+begin
+	set new.price_subtotal = (
+		select new.count * p.price_pc
+		from product p
+		where p.id = new.product_id
+	);
+END;
+//
+DELIMITER ;
\ No newline at end of file