SQL HELP- The database will be posted believe that will be needed to answer the

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SQL HELP- The database will be posted believe that will be needed to answer the question.. Thank you for your help

4A. Write a user-defined function named dbo.ApplyDiscounts that accepts a folioid and returns a table showing the original QuotedRate a calculated DiscountedRate (if applicable). Note: Actual discounts can be either a percentage off or an amount off...but the Discountedrate returned in the table should be smallmoney - either the coupon amount subtracted from the quoted rate or 1+ the percentage amount multiplied by the quoted rate, or just the quotedrate repeated, if a discount does not exist), as well as a Status column* (this column will either display the folioid status or will be used to display error messages for error handling, so make sure it holds more than 1 character).   *Remember: Functions do not allow RAISERROR, like stored procedures, so at a minimum, you'll have to return the error through the function (in this case, in the status column).

4B. After defining this function, pass in folioid 999 (yes that's an invalid folioid, so you can show me the error)

4C. Do it again three more times with folioids (3, 5, and 11).

USE Master --this will switch to Master DB

IF EXISTS (SELECT * FROM sysdatabases WHERE name = 'FARMS')

DROP DATABASE FARMs

GO --This will pause the script to make sure everything has happened

CREATE DATABASE FARMS

ON PRIMARY

(NAME = 'FARMS',

FILENAME = 'C:stageFARMS.mdf', --Change the path for local

SIZE = 12MB, -- 500kb, 500, TB, GB

MAXSIZE = 50 MB,

FILEGROWTH = 10% -- 5MB

)

LOG ON

(NAME = 'FARMS_Log',

FILENAME = 'C:stageFARMSldf', --Change the path for local

SIZE = 4MB, -- 500kb, 500, TB, GB -- 10% Read 25% R/Write

MAXSIZE = 13MB,

FILEGROWTH = 10% -- 5MB

)

GO

-- With the database now created, switch to it and begin creating the individual

-- tables for the database

USE FARMS

CREATE TABLE RESERVATION

(

ReservationID smallint NOT NULL IDENTITY(5000,1),

ReservationDate date NOT NULL,

ReservationStatus char(1) NOT NULL,

ReservationComments varchar(200) NULL,

CreditCardID smallint NOT NULL

)

CREATE TABLE GUEST

(

GuestID smallint NOT NULL IDENTITY(1500,1),

GuestFirst varchar(20) NOT NULL,

GuestLast varchar(20) NOT NULL,

GuestAddress varchar(30) NOT NULL,

guestAddress2 varchar(10) null,

GuestCity varchar(20) NOT NULL,

GuestState char(2) NULL,

GuestPostalCode char(10) NOT NULL,

GuestCountry varchar(20) NOT NULL,

GuestPhone varchar(20) NULL,

GuestEmail varchar(20) NULL,

GuestComments varchar(200) NULL

)

CREATE TABLE ROOMTYPE

(

RoomTypeID smallint NOT NULL IDENTITY(1,1),

RTDescription varchar(200) NOT NULL

)

CREATE TABLE CREDITCARD

(

CreditCardID smallint NOT NULL IDENTITY(1,1),

GuestID smallint NOT NULL,

CCType varchar(5) NOT NULL,

CCNumber varchar(16) NOT NULL,

CCCompany varchar(40) NULL,

CCCardHolder varchar(40) NOT NULL,

CCExpiration smalldatetime NOT NULL

)

CREATE TABLE DISCOUNT

(

DiscountID smallint NOT NULL IDENTITY(1,1),

DiscountDescription varchar(50) NOT NULL,

DiscountExperiation date NOT NULL,

DiscountRules varchar(100) NULL,

DiscountPercent decimal(4,2) NULL,

DiscountAmount smallmoney NULL

)

CREATE TABLE ROOM

(

RoomID smallint NOT NULL IDENTITY(1,1),

RoomNumber varchar(5) NOT NULL,

RoomDescription varchar(200) NOT NULL,

RoomSmoking bit NOT NULL,

RoomBedConfiguration char(2) NOT NULL,

HotelID smallint NOT NULL,

RoomTypeID smallint NOT NULL

)

CREATE TABLE RACKRATE

(

RackRateID smallint NOT NULL IDENTITY(1,1),

RoomTypeID smallint NOT NULL,

HotelID smallint NOT NULL,

RackRate smallmoney NOT NULL,

RackRateBegin date NOT NULL,

RackRateEnd date NOT NULL,

RackRateDescription varchar(200) NOT NULL

)

CREATE TABLE FOLIO

(

FolioID smallint NOT NULL IDENTITY(1,1),

ReservationID smallint NOT NULL,

GuestID smallint NOT NULL,

RoomID smallint NOT NULL,

QuotedRate smallmoney NOT NULL,

CheckinDate smalldatetime NOT NULL,

Nights tinyint NOT NULL,

FStatus char(1) NOT NULL,

Comments varchar(200) NULL,

DiscountID smallint NOT NULL

)

CREATE TABLE BILLING

(

FolioBillingID smallint NOT NULL IDENTITY (1,1),

FolioId smallint NOT NULL,

BillingCategoryID smallint NOT NULL,

BillingDescription char(30) NOT NULL,

BillingAmount smallmoney NOT NULL,

BillingItemQty tinyint NOT NULL,

BillingItemDate date NOT NULL,

)

CREATE TABLE HOTEL

(

HotelID smallint NOT NULL IDENTITY(2100,100),

HotelName varchar(30) NOT NULL,

HotelAddress varchar(30) NOT NULL,

HotelCity varchar(20) NOT NULL,

HotelState char(2) NULL,

HotelCountry varchar(20) NOT NULL,

HotelPostalCode char(10) NOT NULL,

HotelStarRating char(1) NULL,

HotelPictureLink varchar(100) NULL,

TaxLocationID smallint NOT NULL

)

CREATE TABLE PAYMENT

(

PaymentID smallint NOT NULL IDENTITY(8000,1),

FolioID smallint NOT NULL,

PaymentDate date NOT NULL,

PaymentAmount smallmoney NOT NULL,

PaymentComments varchar(200) NULL

)

CREATE TABLE BILLINGCATEGORY

(

BillingCategoryID smallint NOT NULL IDENTITY(1,1),

BillingCatDescription varchar(30) NOT NULL,

BillingCatTaxable bit NOT NULL

)

CREATE TABLE TAXRATE

(

TaxLocationID smallint NOT NULL IDENTITY(1,1),

TaxDescription varchar(30) NOT NULL,

RoomTaxRate decimal(6,4) NOT NULL,

SalesTaxRate decimal(6,4)

)

--Now lets ensure that all the tables were created correctly by using the GO command

--before altering the tables and adding in the contraints

GO

ALTER TABLE RESERVATION

ADD CONSTRAINT PK_ReservationID

PRIMARY KEY (ReservationID)

ALTER TABLE GUEST

ADD CONSTRAINT PK_GuestID

PRIMARY KEY (GuestID)

ALTER TABLE ROOMTYPE

ADD CONSTRAINT PK_RoomTypeID

PRIMARY KEY(RoomTypeID)

ALTER TABLE CREDITCARD

ADD CONSTRAINT PK_CreditCardID

PRIMARY KEY(CreditCardID)

ALTER TABLE DISCOUNT

ADD CONSTRAINT PK_DiscountID

PRIMARY KEY(DiscountID)

ALTER TABLE ROOM

ADD CONSTRAINT PK_RoomID

PRIMARY KEY(RoomID)

ALTER TABLE RACKRATE

ADD CONSTRAINT PK_RackRateID

PRIMARY KEY(RackRateID )

ALTER TABLE FOLIO

ADD CONSTRAINT PK_FolioID

PRIMARY KEY(FolioID)

ALTER TABLE BILLING

ADD CONSTRAINT PK_FolioBillingID

PRIMARY KEY(FolioBillingID)

ALTER TABLE HOTEL

ADD CONSTRAINT PK_HotelIDCheck

PRIMARY KEY(HotelID)

ALTER TABLE PAYMENT

ADD CONSTRAINT PK_PaymentID

PRIMARY KEY(PaymentID)

ALTER TABLE BILLINGCATEGORY

ADD CONSTRAINT PK_BillingCategoryID

PRIMARY KEY(BillingCategoryID)

ALTER TABLE TAXRATE

ADD CONSTRAINT PK_TaxLocationID

PRIMARY KEY(TaxLocationID)

-- Alter Foreign keys

GO

ALTER TABLE RESERVATION

ADD CONSTRAINT FK_RESERVATION

FOREIGN KEY (CreditCardID) REFERENCES CreditCard(CreditCardID)

ON UPDATE Cascade

ON DELETE Cascade

ALTER TABLE CREDITCARD

ADD CONSTRAINT FK_CREDITCARD

FOREIGN KEY (GuestID) REFERENCES Guest(GuestID)

ON UPDATE Cascade

ON DELETE Cascade

ALTER TABLE ROOM

ADD CONSTRAINT FK_ROOM

FOREIGN KEY (HotelID) REFERENCES HOTEL(HotelID)

ON UPDATE Cascade

ON DELETE Cascade,

CONSTRAINT FK_ROOMTYPEID

FOREIGN KEY (RoomTypeID) REFERENCES ROOMTYPE(RoomTypeID)

ON UPDATE No Action

ON DELETE No Action

ALTER TABLE RACKRATE

ADD CONSTRAINT FK_RACKRATE

FOREIGN KEY (RoomTypeID) REFERENCES ROOMTYPE(RoomTypeID)

ON UPDATE Cascade

ON DELETE Cascade,

CONSTRAINT FK_HOTELID2

FOREIGN KEY (HotelID) REFERENCES HOTEL(HotelID)

ON UPDATE No Action

ON DELETE No Action

ALTER TABLE HOTEL

ADD CONSTRAINT FK_HOTEL2

FOREIGN KEY (TaxLocationID) REFERENCES TAXRATE(TaxLocationID)

ON UPDATE Cascade

ON DELETE Cascade

ALTER TABLE BILLING

ADD CONSTRAINT FK_BILLING

FOREIGN KEY (FolioID) REFERENCES FOLIO(FolioID)

ON UPDATE Cascade

ON DELETE Cascade,

CONSTRAINT FK_Billingcat

FOREIGN KEY (BillingCategoryID) REFERENCES BILLINGCATEGORY(BillingCategoryID)

ON UPDATE No Action

ON DELETE No Action

-- ......

ALTER TABLE FOLIO

ADD CONSTRAINT FK_BILLINGIt

FOREIGN KEY (ReservationID) REFERENCES RESERVATION(ReservationID)

ON UPDATE Cascade

ON DELETE Cascade,

CONSTRAINT FK_ROOMIEID

FOREIGN KEY (RoomID) REFERENCES ROOM(RoomID)

ON UPDATE No Action

ON DELETE No Action,

CONSTRAINT FK_THEDISCOUNT

FOREIGN KEY (DiscountID) REFERENCES DISCOUNT(DiscountID)

ON UPDATE No Action

ON DELETE No Action

ALTER TABLE PAYMENT

ADD CONSTRAINT FK_PAYFORIT

FOREIGN KEY (FolioID) REFERENCES FOLIO(FolioID)

ON UPDATE Cascade

ON DELETE Cascade

BULK INSERT RESERVATION FROM 'c:stagearms1-1Reservation.txt' WITH (FIELDTERMINATOR = '|', FIRSTROW =1)

BULK INSERT GUEST FROM 'c:stagearms1-1Guest.txt' WITH (FIELDTERMINATOR = '|', FIRSTROW =1)

BULK INSERT CREDITCARD FROM 'c:stagearms1-1CreditCard.txt' WITH (FIELDTERMINATOR = '|', FIRSTROW =1)

BULK INSERT ROOMTYPE FROM 'c:stagearms1-1RoomType.txt' WITH (FIELDTERMINATOR = '|', FIRSTROW =1)

BULK INSERT DISCOUNT FROM 'c:stagearms1-1Discount.txt' WITH (FIELDTERMINATOR = '|', FIRSTROW =1)

BULK INSERT ROOM FROM 'c:stagearms1-1Room.txt' WITH (FIELDTERMINATOR = '|', FIRSTROW =1)

BULK INSERT RACKRATE FROM 'c:stagearms1-1RackRate.txt' WITH (FIELDTERMINATOR = '|', FIRSTROW =1)

BULK INSERT FOLIO FROM 'c:stagearms1-1Folio.txt' WITH (FIELDTERMINATOR = '|', FIRSTROW =1)

BULK INSERT BILLING FROM 'c:stagearms1-1Billing.txt' WITH (FIELDTERMINATOR = '|', FIRSTROW =1)

BULK INSERT HOTEL FROM 'c:stagearms1-1Hotel.txt' WITH (FIELDTERMINATOR = '|', FIRSTROW =1)

BULK INSERT PAYMENT FROM 'c:stagearms1-1Payment.txt' WITH (FIELDTERMINATOR = '|', FIRSTROW =1)

BULK INSERT BILLINGCATEGORY FROM 'c:stagearms1-1BillingCategory.txt' WITH (FIELDTERMINATOR = '|', FIRSTROW =1)

BULK INSERT TAXRATE FROM 'c:stagearms1-1TaxRate.txt' WITH (FIELDTERMINATOR = '|', FIRSTROW =1)

Explanation / Answer

you havent uploaded the have the text files for the data to load using bulk insert I have assumed and written the query

CREATE FUNCTION dbo.ApplyDiscounts(@folioid int)--passing folioid as parameter
RETURNS @retDiscount TABLE --table valued function which returns the below mentioned columns
(QuotedRate int,DiscountedRate smallmoney,status nvarchar(128))
as
if(@folioid<>999)--checking if folioid is invalid, if it is not matched then will give the resultset from below query
   select f.QuotedRate,f.QuotedRate-(case when d.discountamount<>0 then f.QuotedRate-d.DiscountAmount
                           when DiscountPercent<>0 then 1+(f.QuotedRate*d.DiscountPercent)
                           else f.QuotedRate end) DiscountedRate,
           --Discount rate is calculated based on 1+(quotedrate*discount) or quotedrate-discount
           f.FStatus [status]
   from FOLIO f join discount d on d.discountid=f.discountid
else --this is executed if the folioid is 999
   select null QuotedRate,null DiscountedRate,'Incorrect FolioID' [status]

select * from dbo.ApplyDiscounts(999)--this will pass 999 as parameter to the function

select * from dbo.ApplyDiscounts(3)--this will pass 3 as parameter to the function

select * from dbo.ApplyDiscounts(5)

select * from dbo.ApplyDiscounts(11)

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