Add modify bookings scripts and results

sql/update_booking.sql

@@ -0,0 +1,16 @@
+-- modify bookings - task 2
+-- changes:
+--   changed BookingDate (Reserved) data type from date to datetime, because I assumed that Little Lemon
+--   allows wants bookings per day and table - a table is considered blocked for 2 hours
+-- noqa: disable=CP03,LT02,RF03
+create procedure UpdateBooking (in BookingID int, in Reserved datetime)
+begin
+    update Bookings as B
+    set B.Reserved = Reserved
+    where B.BookingID = BookingID;
+    if row_count() = 1 then
+      select concat("Booking ", BookingID, " updated") as Confirmation;
+    else
+      select concat("Booking ", BookingID, " wasn't updated - missing booking") as Confirmation;
+    end if;
+end