Add available bookings scripts and results

sql/add_valid_booking.sql

@@ -0,0 +1,30 @@
+-- available bookings - task 3
+-- 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
+--   added CustomerID and EmployeeID input parameters
+-- noqa: disable=CP03,LT02,RF03
+--
+create procedure AddValidBooking (
+    in Reserved datetime, in TableNumber int, in CustomerID int, in EmployeeID int
+)
+begin
+    start transaction;
+
+    if TableIsFree(Reserved, TableNumber) then
+        insert into Bookings (Reserved, TableNumber, CustomerID, EmployeeID) values (
+            Reserved, TableNumber, CustomerID, EmployeeID
+        );
+        commit;
+        select concat(
+            "Table ", TableNumber,
+            " was free - booking accepted (BookingID=", (select last_insert_id()), ')'
+        ) as BookingStatus;
+    else
+        rollback;
+        select concat(
+            "Table ", TableNumber,
+            " is already booked - booking cancelled"
+        ) as BookingStatus;
+    end if;
+end

sql/available_booking_results.txt

@@ -0,0 +1,97 @@
+# Task 1
+> source ./example_bookings.sql
+> select * from `Bookings` where `BookingID` between 11 and 14
++-----------+---------------------+-------------+------------+------------+
+| BookingID | Reserved            | TableNumber | CustomerID | EmployeeID |
++-----------+---------------------+-------------+------------+------------+
+| 11        | 2022-10-14 18:00:00 | 5           | 1          | 1          |
+| 12        | 2022-11-12 19:30:00 | 3           | 3          | 1          |
+| 13        | 2022-10-11 18:45:00 | 2           | 2          | 1          |
+| 14        | 2022-10-13 19:15:00 | 2           | 1          | 1          |
++-----------+---------------------+-------------+------------+------------+
+
+# Task 2
+> delimiter $
+> source ./table_is_free.sql
+> source ./check_booking.sql
+> delimiter ;
+> call CheckBooking("2022-11-12 18:15:00", 3, @IsFree);
++---------------------------+
+| BookingStatus             |
++---------------------------+
+| Table 3 is already booked |
++---------------------------+
+> select @IsFree;
++---------+
+| @IsFree |
++---------+
+| 0       |
++---------+
+> call CheckBooking("2022-11-12 17:15:00", 3, @IsFree);
++-----------------+
+| BookingStatus   |
++-----------------+
+| Table 3 is free |
++-----------------+
+> select @IsFree;
++---------+
+| @IsFree |
++---------+
+| 1       |
++---------+
+
+# Task 3
+> delimiter $
+> source ./add_valid_booking.sql
+> delimiter ;
+> call AddValidBooking("2022-11-12 18:15:00", 3, 4, 1);
++-----------------------------------------------+
+| BookingStatus                                 |
++-----------------------------------------------+
+| Table 3 is already booked - booking cancelled |
++-----------------------------------------------+
+> select * from `Bookings`
++-----------+---------------------+-------------+------------+------------+
+| BookingID | Reserved            | TableNumber | CustomerID | EmployeeID |
++-----------+---------------------+-------------+------------+------------+
+| 1         | 2024-11-14 18:00:00 | 1           | 3          | 1          |
+| 2         | 2024-11-14 19:30:00 | 2           | 2          | 1          |
+| 3         | 2024-11-14 18:45:00 | 3           | 4          | 1          |
+| 4         | 2024-11-14 19:15:00 | 4           | 1          | 2          |
+| 5         | 2024-11-14 18:30:00 | 5           | 6          | 2          |
+| 6         | 2024-11-14 19:00:00 | 6           | 5          | 2          |
+| 7         | 2024-11-15 18:15:00 | 1           | 7          | 5          |
+| 8         | 2024-11-15 19:45:00 | 2           | 8          | 5          |
+| 9         | 2024-11-15 18:30:00 | 3           | 9          | 2          |
+| 10        | 2024-11-15 19:00:00 | 4           | 10         | 5          |
+| 11        | 2022-10-14 18:00:00 | 5           | 1          | 1          |
+| 12        | 2022-11-12 19:30:00 | 3           | 3          | 1          |
+| 13        | 2022-10-11 18:45:00 | 2           | 2          | 1          |
+| 14        | 2022-10-13 19:15:00 | 2           | 1          | 1          |
++-----------+---------------------+-------------+------------+------------+
+> call AddValidBooking("2022-11-12 17:15:00", 3, 4, 1);
++----------------------------------------------------+
+| BookingStatus                                      |
++----------------------------------------------------+
+| Table 3 was free - booking accepted (BookingID=15) |
++----------------------------------------------------+
+> select * from `Bookings`
++-----------+---------------------+-------------+------------+------------+
+| BookingID | Reserved            | TableNumber | CustomerID | EmployeeID |
++-----------+---------------------+-------------+------------+------------+
+| 1         | 2024-11-14 18:00:00 | 1           | 3          | 1          |
+| 2         | 2024-11-14 19:30:00 | 2           | 2          | 1          |
+| 3         | 2024-11-14 18:45:00 | 3           | 4          | 1          |
+| 4         | 2024-11-14 19:15:00 | 4           | 1          | 2          |
+| 5         | 2024-11-14 18:30:00 | 5           | 6          | 2          |
+| 6         | 2024-11-14 19:00:00 | 6           | 5          | 2          |
+| 7         | 2024-11-15 18:15:00 | 1           | 7          | 5          |
+| 8         | 2024-11-15 19:45:00 | 2           | 8          | 5          |
+| 9         | 2024-11-15 18:30:00 | 3           | 9          | 2          |
+| 10        | 2024-11-15 19:00:00 | 4           | 10         | 5          |
+| 11        | 2022-10-14 18:00:00 | 5           | 1          | 1          |
+| 12        | 2022-11-12 19:30:00 | 3           | 3          | 1          |
+| 13        | 2022-10-11 18:45:00 | 2           | 2          | 1          |
+| 14        | 2022-10-13 19:15:00 | 2           | 1          | 1          |
+| 15        | 2022-11-12 17:15:00 | 3           | 4          | 1          |
++-----------+---------------------+-------------+------------+------------+

sql/check_booking.sql

@@ -0,0 +1,10 @@
+-- available 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 CheckBooking (in Reserved datetime, in TableNumber int, out IsFree boolean) --
+begin
+    set IsFree = TableIsFree(Reserved, TableNumber);
+    select concat("Table ", TableNumber, " is ", if(IsFree, "free", "already booked")) as BookingStatus;
+end

sql/example_bookings.sql

@@ -0,0 +1,12 @@
+-- available bookings - task 1
+-- 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
+--   changed BookingID range from 1-4 to 11-14, because there are already 10 Bookings in my test data set
+--   added arbitrary EmployeeID that corresponds to the Employee that handled the booking process
+-- noqa: disable=CP03
+insert into Bookings (BookingID, Reserved, TableNumber, CustomerID, EmployeeID) values
+(11, '2022-10-14 18:00:00', 5, 1, 1),
+(12, '2022-11-12 19:30:00', 3, 3, 1),
+(13, '2022-10-11 18:45:00', 2, 2, 1),
+(14, '2022-10-13 19:15:00', 2, 1, 1);

sql/table_is_free.sql

@@ -0,0 +1,17 @@
+-- available 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 function TableIsFree(Reserved datetime, TableNumber int)
+returns boolean
+deterministic
+begin
+    return (select not exists (
+        select BookingID
+        from Bookings as B
+        where
+            abs(timestampdiff(second, B.Reserved, Reserved)) < 2 * 60 * 60
+            and B.TableNumber = TableNumber
+    ));
+end