diff --git a/sql/manual_changes/2026-06-12-create-trigger-sync-order-total.sql b/sql/manual_changes/2026-06-12-create-trigger-sync-order-total.sql
new file mode 100644
index 00000000..7a370b30
--- /dev/null
+++ b/sql/manual_changes/2026-06-12-create-trigger-sync-order-total.sql
@@ -0,0 +1,88 @@
+-- Stored procedure: hitung total dari 3 tabel dan update orderSubtotal+orderTotal
+DROP PROCEDURE IF EXISTS one_klinik.sync_order_total;
+
+DELIMITER $$
+
+CREATE PROCEDURE one_klinik.sync_order_total(IN p_order_id INT)
+BEGIN
+  DECLARE v_total DECIMAL(15,2);
+  SET v_total = (
+    COALESCE((SELECT SUM(orderDetailOrderT_PriceTotal)
+              FROM one_klinik.order_detail_order
+              WHERE orderDetailOrderOrderID = p_order_id
+                AND orderDetailOrderIsActive = 'Y'), 0)
+    +
+    COALESCE((SELECT SUM(orderVaccineTotal)
+              FROM one_klinik.order_vaccine
+              WHERE orderVaccineOrderID = p_order_id
+                AND orderVaccineIsActive = 'Y'), 0)
+    +
+    COALESCE((SELECT SUM(orderTindakanTotal)
+              FROM one_klinik.order_tindakan
+              WHERE orderTindakanOrderID = p_order_id
+                AND orderTindakanIsActive = 'Y'), 0)
+  );
+  UPDATE one_klinik.`order`
+  SET orderSubtotal = v_total,
+      orderTotal    = v_total
+  WHERE orderID = p_order_id;
+END$$
+
+-- ── order_detail_order ────────────────────────────────────────────────────────
+DROP TRIGGER IF EXISTS one_klinik.trg_odo_ai$$
+CREATE TRIGGER one_klinik.trg_odo_ai
+  AFTER INSERT ON one_klinik.order_detail_order
+  FOR EACH ROW
+  CALL one_klinik.sync_order_total(NEW.orderDetailOrderOrderID)$$
+
+DROP TRIGGER IF EXISTS one_klinik.trg_odo_au$$
+CREATE TRIGGER one_klinik.trg_odo_au
+  AFTER UPDATE ON one_klinik.order_detail_order
+  FOR EACH ROW
+  CALL one_klinik.sync_order_total(NEW.orderDetailOrderOrderID)$$
+
+DROP TRIGGER IF EXISTS one_klinik.trg_odo_ad$$
+CREATE TRIGGER one_klinik.trg_odo_ad
+  AFTER DELETE ON one_klinik.order_detail_order
+  FOR EACH ROW
+  CALL one_klinik.sync_order_total(OLD.orderDetailOrderOrderID)$$
+
+-- ── order_vaccine ─────────────────────────────────────────────────────────────
+DROP TRIGGER IF EXISTS one_klinik.trg_ov_ai$$
+CREATE TRIGGER one_klinik.trg_ov_ai
+  AFTER INSERT ON one_klinik.order_vaccine
+  FOR EACH ROW
+  CALL one_klinik.sync_order_total(NEW.orderVaccineOrderID)$$
+
+DROP TRIGGER IF EXISTS one_klinik.trg_ov_au$$
+CREATE TRIGGER one_klinik.trg_ov_au
+  AFTER UPDATE ON one_klinik.order_vaccine
+  FOR EACH ROW
+  CALL one_klinik.sync_order_total(NEW.orderVaccineOrderID)$$
+
+DROP TRIGGER IF EXISTS one_klinik.trg_ov_ad$$
+CREATE TRIGGER one_klinik.trg_ov_ad
+  AFTER DELETE ON one_klinik.order_vaccine
+  FOR EACH ROW
+  CALL one_klinik.sync_order_total(OLD.orderVaccineOrderID)$$
+
+-- ── order_tindakan ────────────────────────────────────────────────────────────
+DROP TRIGGER IF EXISTS one_klinik.trg_ot_ai$$
+CREATE TRIGGER one_klinik.trg_ot_ai
+  AFTER INSERT ON one_klinik.order_tindakan
+  FOR EACH ROW
+  CALL one_klinik.sync_order_total(NEW.orderTindakanOrderID)$$
+
+DROP TRIGGER IF EXISTS one_klinik.trg_ot_au$$
+CREATE TRIGGER one_klinik.trg_ot_au
+  AFTER UPDATE ON one_klinik.order_tindakan
+  FOR EACH ROW
+  CALL one_klinik.sync_order_total(NEW.orderTindakanOrderID)$$
+
+DROP TRIGGER IF EXISTS one_klinik.trg_ot_ad$$
+CREATE TRIGGER one_klinik.trg_ot_ad
+  AFTER DELETE ON one_klinik.order_tindakan
+  FOR EACH ROW
+  CALL one_klinik.sync_order_total(OLD.orderTindakanOrderID)$$
+
+DELIMITER ;