Using Oracle, access the tables you created in Project 2 and complete the follow

Question

Using Oracle, access the tables you created in Project 2 and complete the following SQL transactions.

3 points

List the AgentID, AgentFName, AgentLName, and count of reservations for each agent. Combine the first and last names into one column, and sort by count in descending order. Use the following column headings: AgentID, Agent, ResCount. Hint: use a GROUP BY clause.

4 points

List the ID, first name, last name, and count of Reservtions for the agent(s) who have processed more than one reservation. Sort by count in descending order, then by agent ID in ascending order. Use the following column headings: AgentID, FirstName, LastName, ResCount. Hint: use a GROUP BY clause and a HAVING clause.

4 points

List the customer ID, first name, and last name for any customers who do not have any reservations. Use the following column headings: CustID, FirstName, LastName. Hint: use a Nested Select.

spool Project2_abc.txt;

set echo on

-- Drop tables
DROP TABLE ResDetail_abc;
DROP TABLE Reservation_abc;
DROP TABLE Customer_abc;
DROP TABLE Agent_abc;
DROP TABLE AgentType_abc;
DROP TABLE RateType_abc;
DROP TABLE RoomType_abc;
DROP TABLE CustType_abc;
DROP TABLE Room_abc;

--Part I

Create TABLE Room_abc(
RoomNum CHAR(6),
RoomType CHAR(6), NOT NULL
PRIMARY KEY (RoomNum),
FOREIGN KEY (RoomType) REFERENCES RoomType_abc
);

CREATE TABLE CustType_abc(
CustType CHAR(6),
CustTypeDesc VARCHAR(25), NOT NULL
PRIMARY KEY (CustType)
);

CREATE TABLE RoomType_abc(
RoomType CHAR(6),
RoomTypeDesc VARCHAR(25), NOT NULL
PRIMARY KEY (RoomType)
);

CREATE TABLE RateType_abc(
RateType CHAR(6),
RateTypeDesc VARCHAR(25), NOT NULL
PRIMARY KEY (RateType)
);

CREATE TABLE AgentType_abc(
AgentType CHAR(6),
AgentTypeDesc VARCHAR(25),
PRIMARY KEY (AgentType)
);

CREATE TABLE Agent_abc(
AgentID Number(5),
AgentFName VARCHAR(20),
AgentLName VARCHAR(20),
AgentType CHAR(6),
PRIMARY KEY (AgentID),
FOREIGN KEY (AgentType) REFERENCES AgentType_abc
);

CREATE TABLE Customer_abc(
CustID Number(5),
CustFName VARCHAR(20),
CustLName VARCHAR(20),
CustPhone VARCHAR(10),
CustType CHAR(6),
LoyaltyID Number(5),
PRIMARY KEY (CustID),
FOREIGN KEY (CustType) REFERENCES CustType_abc
);

CREATE TABLE Reservation_abc(
ResID Number(5),
CheckInDate DATE,
CheckOutDate DATE,
CustID Number(5),
AgentID Number(5),
PRIMARY KEY (ResID),
FOREIGN KEY (CustID) REFERENCES Customer_abc(CustID),
FOREIGN KEY (AgentID) REFERENCES Agent_abc(AgentID)
);

CREATE TABLE ResDetail_abc(
ResID Number(5),
RoomNum Number(5),
RateType CHAR(15),
RateAmt DECIMAL(5,2),
PRIMARY KEY (ResID, RoomNum),
FOREIGN KEY (ResID) REFERENCES Reservation_abc ,
FOREIGN KEY (RoomNum) REFERENCES Room_abc ,
FOREIGN KEY (RateType) REFERENCES RateType_abc
);

DESCRIBE ResDetail_abc;
DESCRIBE Reservation_abc;
DESCRIBE CustType_abc;
DESCRIBE Customer_abc;
DESCRIBE AgentType_abc;
DESCRIBE Agent_abc;
DESCRIBE RateType_abc;
DESCRIBE RoomType_abc;
DESCRIBE Room_abc;

--Part II-

--Room table

INSERT INTO Room_abc
VALUES(224, 'K');
INSERT INTO Room_abc
VALUES(225, 'D');
INSERT INTO Room_abc
VALUES(305, 'D');
INSERT INTO Room_abc
VALUES(409, 'D');
INSERT INTO Room_abc
VALUES(320, 'D');
INSERT INTO Room_abc
VALUES(302, 'K');
INSERT INTO Room_abc
VALUES(501, 'KS');
INSERT INTO Room_abc
VALUES(502, 'KS');
INSERT INTO Room_abc
VALUES(321, 'K');

--RoomType
INSERT INTO RoomType_abc
VALUES('K','KingBed');
INSERT INTO RoomType_abc
VALUES('D','2Double');
INSERT INTO RoomType_abc
VALUES('KS','KingSuite');

--RateType
INSERT INTO RateType_abc
VALUES('C', 'Corporate');
INSERT INTO RateType_abc
VALUES('C', 'Corporate');
INSERT INTO RateType_abc
VALUES('S', 'Standard');
INSERT INTO RateType_abc
VALUES('W', 'Weekend');
INSERT INTO RateType_abc
VALUES('C', 'Corporate');
INSERT INTO RateType_abc
VALUES('S', 'Standard');
INSERT INTO RateType_abc
VALUES('W', 'Weekend');
INSERT INTO RateType_abc
VALUES('W', 'Weekend');
INSERT INTO RateType_abc
VALUES('S', 'Standard');
INSERT INTO RateType_abc
VALUES('W', 'Weekend');
INSERT INTO RateType_abc
VALUES('W', 'Weekend');
INSERT INTO RateType_abc
VALUES('W', 'Weekend');
INSERT INTO RateType_abc
VALUES('W', 'Weekend');

--Agent
INSERT INTO Agent_abc
VALUES(20, 'Megan', 'Smith', 'FD');
INSERT INTO Agent_abc
VALUES(20, 'Megan', 'Smith', 'FD');
INSERT INTO Agent_abc
VALUES(5, 'Janice', 'May', 'T');
INSERT INTO Agent_abc
VALUES(14, 'John', 'King', 'FD');
INSERT INTO Agent_abc
VALUES(28, 'Ray', 'Schulz', 'T');
INSERT INTO Agent_abc
VALUES(20, 'Megan', 'Smith', 'FD');
INSERT INTO Agent_abc
VALUES(14, 'John', 'King', 'FD');
INSERT INTO Agent_abc
VALUES(14, 'John', 'King', 'FD');
INSERT INTO Agent_abc
VALUES(20, 'Megan', 'Smith', 'FD');
INSERT INTO Agent_abc
VALUES(5, 'Janice', 'May', 'T');
INSERT INTO Agent_abc
VALUES(5, 'Janice', 'May', 'T');
INSERT INTO Agent_abc
VALUES(14, 'John', 'King', 'FD');
INSERT INTO Agent_abc
VALUES(28, 'Ray', 'Schulz', 'T');

--AgentType
INSERT INTO AgentType_abc
VALUES('FD', 'FrontDesk');
INSERT INTO AgentType_abc
VALUES('FD', 'FrontDesk');
INSERT INTO AgentType_abc
VALUES('T', 'Telephone');
INSERT INTO AgentType_abc
VALUES('FD', 'FrontDesk');
INSERT INTO AgentType_abc
VALUES('T', 'Telephone');
INSERT INTO AgentType_abc
VALUES('FD', 'FrontDesk');
INSERT INTO AgentType_abc
VALUES('RC', 'RecCenter');
INSERT INTO AgentType_abc
VALUES('FD', 'FrontDesk');
INSERT INTO AgentType_abc
VALUES('FD', 'FrontDesk');
INSERT INTO AgentType_abc
VALUES('T', 'Telephone');
INSERT INTO AgentType_abc
VALUES('RC', 'RecCenter');
INSERT INTO AgentType_abc
VALUES('T', 'Telephone');

-- Customer
INSERT INTO Customer_abc
VALUES(85,'Wesley', 'Tanner', '8175551193', 'C', 'Corporate', 323);
INSERT INTO Customer_abc
VALUES(85,'Wesley', 'Tanner', '8175551193', 'C', 'Corporate', 323);
INSERT INTO Customer_abc
VALUES(100, 'Breanna', 'Rhodes', '2145559191', 'I','Individual' 129);
INSERT INTO Customer_abc
VALUES(15, 'Jeff', 'Minner', NULL, 'I', 'Individual', NULL);
INSERT INTO Customer_abc
VALUES(77, 'Kim', 'Jackson', '8175554911','C', 'Corporate', 210);
INSERT INTO Customer_abc
VALUES(119, 'Mary', 'Vaughn', '8175552334', 'I', 'Individual' 118);
INSERT INTO Customer_abc
VALUES(97, 'Chris', 'Mancha', '4695553440', 'I', 'Individual', 153);
INSERT INTO Customer_abc
VALUES(97, 'Chris', 'Mancha', '4695553440', 'I', 'Individual', 153);
INSERT INTO Customer_abc
VALUES(100, 'Breanna', 'Rhodes', '2145559191', 'I', 'Individual', 129);
INSERT INTO Customer_abc
VALUES(85, 'Wesley', 'Tanner', '8175551193', 'C', 'Corporate', 323);
INSERT INTO Customer_abc
VALUES(85, 'Wesley', 'Tanner', '8175551193', 'C', 'Corporate', 323);
INSERT INTO Customer_abc
VALUES(28, 'Rennee', 'Walker', '2145559285', 'I', 'Individual', 135);
INSERT INTO Customer_abc
VALUES(23, 'Shelby', 'Day', NULL, 'i','Individual', NULL);

--CustType
INSERT INTO CustType_abc
VALUES('C', 'Corporate');
INSERT INTO CustTyoe_abc
VALUES('I', 'Individual');

--Reservation
INSERT INTO Reservation_abc
VALUES(1001,'5-FEB-2018', '7-FEB-2018', 85, 20);
INSERT INTO Reservation_abc
VALUES(1002, '1-FEB-2018', '3-FEB-2018', 100, 5);
INSERT INTO Reservation_abc
VALUES(1003,'9-FEB-2018', '11-FEB-2018', 15, 14);
INSERT INTO Reservation_abc
VALUES(1004, '22-FEB-2018', '23-FEB-2018', 77, 28);
INSERT INTO Reservation_abc
VALUES(1005, '15-FEB-2018', '18-FEB-2018', 119, 20);
INSERT INTO Reservation_abc
VALUES(1006, '24-FEB-2018', '26-FEB-2018', 97, 14);
INSERT INTO Reservation_abc
VALUES(1007, '20-FEB-2018', '25-FEB-2018', 100, 20);
INSERT INTO Reservation_abc
VALUES(1008, '23-MAR-2018', '25-MAR-2018', 85, 5);
INSERT INTO Reservation_abc
VALUES(1009, '1-MAR-2018', '4-MAR-2018', 28, 14);
INSERT INTO Reservation_abc
VALUES(1010, '1-MAR-2018', '3-MAR-2018', 23, 28);

-- ResDetail
INSERT INTO ResDetail_abc
VALUES(1001,224,'C',120);
INSERT INTO ResDetail_abc
VALUES(1001,225,'C',125);
INSERT INTO ResDetail_abc
VALUES(1002,305,'S',149);
INSERT INTO ResDetail_abc
VALUES(1003,409,'W',99);
INSERT INTO ResDetail_abc
VALUES(1004,320,'C',110);
INSERT INTO ResDetail_abc
VALUES(1005,302,'S',139);
INSERT INTO ResDetail_abc
VALUES(1006,501,'W',119);
INSERT INTO ResDetail_abc
VALUES(1006,502,'W',119);
INSERT INTO ResDetail_abc
VALUES(1007,302,'S',139);
INSERT INTO ResDetail_abc
VALUES(1008,320,'W',89);
INSERT INTO ResDetail_abc
VALUES(1008,321,'W',99);
INSERT INTO ResDetail_abc
VALUES(1009,502,'W',129);
INSERT INTO ResDetail_abc
VALUES(1010,225,'W',129);

SELECT * FROM ResDetail_abc;
SELECT * FROM Reservation_abc;
SELECT * FROM CustType_abc;
SELECT * FROM Customer_abc;
SELECT * FROM AgentType_abc;
SELECT * FROM Agent_abc;
SELECT * FROM RateType_abc;
SELECT * FROM RoomType_abc;
SELECT * FROM Room_abc;

COMMIT;
--Part III-

UPDATE Customer_abc
SET CustPhone = '214551234'
WHERE CustID = 85;

INSERT INTO Customer_abc
VALUES (120, 'Amanda', 'Green',NULL,NULL,NULL);

UPDATE Reservation_abc
SET CheckOutDate = '8-FEB-2018'
WHERE ResID = 1001;

INSERT INTO Reservation_abc
VALUES (1011, '1-MAR-2018', '4-MAR-2018', 120, 14);

UPDATE ResDetail_abc
SET RateType = 'C'
WHERE ResID = 1003;

UPDATE ResDetail_abc
SET RateAmt = 89
WHERE ResID = 1003;

INSERT INTO ResDetail_abc
VALUES (1011,224,'W',119);

INSERT INTO ResDetail_abc
VALUES (1011,225,'W',119);

COMMIT;

--Part IV

SELECT * FROM ResDetail_abc;
SELECT * FROM Reservation_abc;
SELECT * FROM Customer_abc;
SELECT * FROM Agent_abc;
SELECT * FROM AgentType_abc;
SELECT * FROM RateType_abc;
SELECT * FROM RoomType_abc;
SELECT * FROM CustType_abc;
SELECT * FROM Room_abc;

set echo off
spool off

ResDetail Customer CustlD CustFName CustLName CustPhone CustType LoyaltylD Reservation ResID CheckinDate CheckOutDate CustID AgentID ReslD Room CustType CustType CustTypeDesc RoomNum RateType RateAmt RoomType Agent AgentlD AgentFName AgentLName AgentType RateType RateType RateTypeDesc RoomType RoomType RoomTypeDesc AgentType AgentType AgentTypeDesc

Explanation / Answer

1. select a.AgentID,a.AgentFName|| ||a.AgentLName as Agent,count(r.ResID) as ResCount from Agent a,Reservation r where a.AgentID=r.AgentID group by a.AgentID order by ResCount desc;

The above query will retrieve the agent and reservation count for each agent based on the descending order of the reseervation count.

2. select a.AgentID,a.AgentFName as FirstName,a.AgentLName as LastName,count(r.ResID) as ResCount from Agent a,Reservation r where a.AgentID=r.AgentID group by a.AgentID order by ResCount desc,a.AgentID asc having count(r.ResID)>1;

The above query will retrieve the agent and reservation count for each agent based on the descending order of the reseervation count and agent id in ascending order which are having count of reservations more than 1.

3. select c.CustID,c.CustFname,c.CustLname from Customer,Reservation where c.CustID not in (select r.CustID from Reservation);

The above is nested select query which compares the customer id from customer table to customerid in reservation table if there is matching customer id exist then it will not display that customer. It will retrieve those who are not having any reservations only.

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