Fix Split Bill

migrations/000033_add_remaining_amount_to_orders.up.sql

@@ -0,0 +1,8 @@
+-- Add remaining_amount column to orders table
+ALTER TABLE orders ADD COLUMN remaining_amount DECIMAL(10,2) DEFAULT 0.00;
+
+-- Update existing orders to set remaining_amount equal to total_amount
+UPDATE orders SET remaining_amount = total_amount WHERE remaining_amount = 0.00;
+
+-- Add constraint to ensure remaining_amount is not negative
+ALTER TABLE orders ADD CONSTRAINT check_remaining_amount_non_negative CHECK (remaining_amount >= 0.00);