SQL Stored Procedures For My Library Project

--This procedure adds an adult member to
--the dbo.member and dbo.adult tables.
CREATE PROCEDURE [dbo].[AddAdultMember]
@FirstName nvarchar (15),
@MiddleInitial nvarchar (1) = NULL,
@LastName nvarchar (15),
@Street nvarchar (15),
@City nvarchar (15),
@State nchar (2),
@ZipCode nvarchar (10),
@PhoneNumber nvarchar (15) = NULL,
@MemberID int OUTPUT
AS

DECLARE @ExprDate datetime
SET @ExprDate = DATEADD(year,1,GETDATE())

--Test for null values.
IF @FirstName is NULL OR @LastName is NULL
OR @Street is NULL OR @City is NULL
OR @State is NULL OR @ZipCode is NULL
BEGIN
RAISERROR('Invalid data entry.',11,1)
RETURN
END

--Add the new member to the dbo.member table.
--Then add that member as a child
--record to the adult table.
BEGIN TRANSACTION
INSERT dbo.member
(lastname,firstname,middleinitial)
VALUES (@LastName,@FirstName,@MiddleInitial)

--Test for successful insertion.
if @@ERROR <> 0
BEGIN
RAISERROR('Error, member not added.',11,1)
ROLLBACK TRANSACTION
RETURN
END

SET @MemberID = Scope_Identity();

INSERT dbo.adult
(member_no,street,city,[state],zip,phone_no,expr_date)
VALUES (@MemberID,@Street,@City,@State,@ZipCode,@PhoneNumber,@ExprDate)

if @@ERROR <> 0
BEGIN
RETURN
END

COMMIT TRANSACTION

--This procedure adds a new item to
--the library. ISBN, copy #, Title,
--Title #, translation, cover, author,
--loanable, and synopsis fields are
--required. If an ISBN already exists
--in the library a new copy # is taken out.
CREATE PROCEDURE [dbo].[AddItem]
@ISBN int,
@Translation nvarchar (8) = NULL,
@Cover nvarchar (8) = NULL,
@Title nvarchar (63),
@Author nvarchar (31),
@Synopsis text = NULL,
@Loanable nchar (1),
@CopyNo smallint OUTPUT
AS

IF @ISBN is NULL OR @Loanable is NULL
OR @Title is NULL OR @Author is NULL
BEGIN
RETURN
END

--Test to see if the item exists in library.
DECLARE @ItemCount int
SELECT @ItemCount = count(*) FROM dbo.item as it
WHERE it.isbn = @ISBN

IF @ItemCount < 1 --The item doesn't exist so add it.
BEGIN
BEGIN TRANSACTION
DECLARE @TitleNo int
--Add record to the title table first.
INSERT dbo.title
(title,author,synopsis)
VALUES (@Title,@Author,@Synopsis)
IF @@Error <> 0
BEGIN
RAISERROR('Cannot add item.',11,1)
RETURN
END
SET @TitleNo = @@IDENTITY

--Add record to the item table next.
INSERT dbo.item
(isbn,title_no,translation,cover,loanable)
VALUES (@ISBN,@TitleNo,@Translation,@Cover,@Loanable)
IF @@ERROR <> 0
BEGIN
RETURN
END
--Add record to the copy table next.
SET @CopyNo = 1
INSERT dbo.copy
(isbn,copy_no,title_no,on_loan)
VALUES (@ISBN,@CopyNo,@TitleNo,'N')
IF @@ERROR <> 0
BEGIN

RETURN
END
COMMIT TRANSACTION
END
ELSE
BEGIN --The item already exists. Add another copy.
--First determine what the title number is.
SELECT @TitleNo = title_no FROM dbo.item
WHERE isbn = @ISBN
--Then determine what the copy number should be
--by counting how many copies already exist.
DECLARE @CopyCount int
SELECT @CopyCount = count(*) FROM dbo.copy as co
WHERE co.isbn = @isbn
--The latest copy # should be the count + 1.
SET @CopyNo = @CopyCount + 1
BEGIN TRANSACTION
--Add record to the copy table.
INSERT dbo.copy
(isbn,copy_no,title_no,on_loan)
VALUES (@ISBN,@CopyNo,@TitleNo,'N')
IF @@ERROR <> 0
BEGIN
RETURN
END
COMMIT TRANSACTION
END

CREATE PROCEDURE [dbo].[AddJuvenileMember]
@FirstName nvarchar (15),
@MiddleInitial nvarchar (1) = NULL,
@LastName nvarchar (15),
@AdultMemberNo int,
@BirthDate datetime,
@MemberID int OUTPUT
AS

IF @FirstName is NULL OR @LastName is NULL
OR @AdultMemberNo is NULL OR @BirthDate is NULL
BEGIN
RETURN
END

--Test for valid adult member ID.
DECLARE @Exists int
SELECT @Exists = COUNT(*) FROM adult
WHERE member_no = @AdultMemberNo

IF @Exists < 1 --A valid adult does not exist.
BEGIN
RAISERROR('Valid adult member does not exist.',11,1)
RETURN
END

--Test for valid birthday.
IF (@BirthDate > GETDATE()) or (@BirthDate < DATEADD(year,-18,GETDATE()))
BEGIN
RAISERROR('Invalid birth date',11,1)
RETURN
END

DECLARE @ExprDate datetime
SET @ExprDate = DATEADD(year,1,GETDATE())

--Add the new member to the dbo.member table.
--Then add that member as a child
--record to the juvenile table.
BEGIN TRANSACTION
INSERT dbo.member
(lastname,firstname,middleinitial)
VALUES (@LastName,@FirstName,@MiddleInitial)

if @@ERROR <> 0
BEGIN
RETURN
END

SET @MemberID = Scope_Identity();

INSERT dbo.juvenile
(member_no,adult_member_no,birth_date)
VALUES (@MemberID,@AdultMemberNo,@BirthDate)

if @@ERROR <> 0
BEGIN
RETURN
END

COMMIT TRANSACTION

--This procedure checks in an item by
--removing a record from the loan table
--and adding a record to the loanhist table.
--It also updates the on_loan field
--in the copy table to 'N'.
CREATE PROCEDURE [dbo].[CheckInItem]
@isbn int,
@CopyNo smallint
AS

IF @isbn is NULL OR @CopyNo is NULL
BEGIN
RAISERROR('Check in not successful. Invalid data entry.',11,1)
RETURN
END

SELECT @ItemCount = count(*) FROM [dbo].[item] as it
JOIN [dbo].[copy] as co ON
it.isbn = co.isbn
WHERE it.isbn = @isbn AND co.copy_no = @CopyNo
IF @ItemCount < 1
BEGIN
RAISERROR('Check in not successful. Item does not exist in this
library.',12,1)
RETURN
END

--Test to see if the item is not on loan.
DECLARE @OnLoan nvarchar (1)
SELECT @OnLoan = on_loan FROM [dbo].[copy]
WHERE isbn = @isbn AND copy_no = @CopyNo
IF @OnLoan = 'N'
BEGIN
RAISERROR('Check in not successful. Item is not currently checked out.',13,1)
RETURN
END

--Retrieve the title number.
SELECT @TitleNo = title_no FROM [dbo].[copy]

--Retrieve the member ID.
--Retrieve the check out date.
--Retrieve the due date.
DECLARE @MemberID int, @OutDate datetime, @DueDate datetime
SELECT @MemberID = member_no, @OutDate = out_date, @DueDate = due_date FROM [dbo].[loan]

--Set the check in date as today.
DECLARE @InDate datetime
SET @InDate = GETDATE()

--Delete the record in the loan table.
--Change the on_loan field to 'N' in the copy table.
--Add a record in the loanhist table.
BEGIN TRANSACTION

UPDATE [dbo].[copy]
SET on_loan = 'N'

if @@ERROR <> 0
BEGIN
RAISERROR('Error, item not checked in.',11,1)
RETURN
END

DELETE [dbo].[loan]

if @@ERROR <> 0
BEGIN
RETURN
END

INSERT loanhist
(isbn,copy_no,out_date,title_no,member_no,due_date,in_date)
VALUES (@isbn,@CopyNo,@OutDate,@TitleNo,@MemberID,@DueDate,@InDate)

if @@ERROR <> 0
BEGIN
RETURN
END

COMMIT TRANSACTION

--This procedure checks out an item by
--adding a record to the loan table.
--It also updates the on_loan field
--in the copy table to 'Y'.
CREATE PROCEDURE [dbo].[CheckOutItem]
@MemberID int,
@isbn int,
@CopyNo smallint
AS

IF @MemberID is NULL OR @isbn is NULL OR @CopyNo is NULL
BEGIN
RETURN
END

it.isbn = co.isbn
IF @ItemCount < 1
BEGIN
RAISERROR('Item does not exist in this library.',11,1)
RETURN
END

--Test to see if the item is loanable.
DECLARE @Loanable nvarchar (1)
SELECT @Loanable = loanable FROM [dbo].[item]
WHERE isbn = @isbn
IF @Loanable = 'N'
BEGIN
RAISERROR('Check out not successful. Item is not loanable.',11,1)
RETURN
END

--Test to see if the item is already on loan.
DECLARE @OnLoan nvarchar (1)
SELECT @OnLoan = on_loan FROM [dbo].[copy]
IF @OnLoan = 'Y'
BEGIN
RAISERROR('Check out not successful. Item is already checked out.',12,1)
RETURN
END

--Retrieve the title number.
SELECT @TitleNo = title_no FROM [dbo].[copy]

--Set the check out date as today and the
--due date as 14 days from today.
--Assume that the library is open
--on weekends.
DECLARE @OutDate datetime
DECLARE @DueDate datetime
SET @OutDate = GETDATE()
SET @DueDate = DATEADD(day,14,GETDATE())

--Add the new record to the loan table.
--Then change the on_loan field to 'Y' in the copy table.
BEGIN TRANSACTION

UPDATE [dbo].[copy]
SET on_loan = 'Y'

if @@ERROR <> 0
BEGIN
RAISERROR('Error, item not checked out.',11,1)
RETURN
END

INSERT [dbo].[loan]
(isbn,copy_no,title_no,member_no,out_date,due_date)
VALUES (@isbn,@CopyNo,@TitleNo,@MemberID,@OutDate,@DueDate)

if @@ERROR <> 0
BEGIN
RAISERROR('Error, item not checked out.',11,1)
RETURN
END

COMMIT TRANSACTION

--This procedure deletes a member from
--either the adult or juvenile table.
CREATE PROCEDURE [dbo].[DeleteMember]
@MemberID int
AS

IF @MemberID is NULL
BEGIN
RETURN
END

--Test for adult member.
DECLARE @AdultCount int
SELECT @AdultCount = count(*) FROM adult
WHERE member_no = @MemberID

IF @AdultCount > 0
BEGIN
BEGIN TRANSACTION
DELETE dbo.adult

--Test for successful deletion.
if @@ERROR <> 0
BEGIN
RAISERROR('Error, member not deleted.',11,1)
RETURN
END
COMMIT TRANSACTION
RETURN
END

--Test for juvenile member.
DECLARE @JuvenileCount int
SELECT @JuvenileCount = count(*) FROM juvenile

IF @JuvenileCount > 0
BEGIN
BEGIN TRANSACTION
DELETE dbo.juvenile

--Test for successful deletion.
if @@ERROR <> 0
BEGIN
RAISERROR('Error, member not deleted.',11,1)
RETURN
END
COMMIT TRANSACTION
RETURN
END

--This procedure returns a result set
--with values from the following fields:
--Author, CheckOutDate, CopyNumber,
--DueDate, ISBN, MemberID, and Title.
CREATE PROCEDURE [dbo].[GetItem]
@isbn int,
@CopyNo smallint
AS

IF @isbn is NULL OR @CopyNo is NULL
BEGIN
RAISERROR('Item not found. Invalid data entry.',11,1)
RETURN
END

it.isbn = co.isbn
IF @ItemCount < 1
BEGIN
RAISERROR('Item does not exist in this library.',11,1)
RETURN
END

SELECT co.isbn as ISBN,
co.copy_no as CopyNumber,
ti.title as Title,
ti.author as Author,
lo.out_date as CheckOutDate,
lo.due_date as DueDate,
lo.member_no as MemberID
FROM [dbo].[copy] as co
JOIN [dbo].[title] as ti ON co.title_no = ti.title_no
LEFT JOIN [dbo].[loan] as lo ON lo.isbn = @isbn AND lo.copy_no = @CopyNo
WHERE co.isbn = @isbn AND co.copy_no = @CopyNo

--This procedure returns a result set
--containing items on loan for a
--particular member ID.
CREATE PROCEDURE [dbo].[GetItems]
@MemberID int
AS
BEGIN
RAISERROR('Member not found. Invalid data entry.',11,1)
RETURN
END

--Test to see if the member exists in membership.
DECLARE @MemberCount int
SELECT @MemberCount = count(*) FROM [dbo].[member]
IF @MemberCount < 1
BEGIN
RAISERROR('Member not found.',11,1)
RETURN
END

SELECT lo.isbn,
lo.copy_no,
ti.title,
ti.author,
lo.out_date,
lo.due_date,
it.translation,
it.cover,
it.loanable,
lo.title_no,
ti.synopsis,
co.on_loan,
lo.member_no
FROM [dbo].[loan] as lo
JOIN [dbo].[item] as it ON lo.isbn = it.isbn AND lo.title_no = it.title_no
JOIN [dbo].[copy] as co ON lo.isbn = co.isbn AND lo.title_no = co.title_no AND
lo.copy_no = co.copy_no
JOIN [dbo].[title] as ti ON lo.title_no = ti.title_no
WHERE lo.member_no = @MemberID

--This procedure returns an adult member
--or a juvenile member
CREATE PROCEDURE [dbo].[GetMember]
@MemberID int,
@MemberType nvarchar (8) OUTPUT
AS
BEGIN
SET @MemberType = 'NONE'
RETURN
END

--Test for valid juvenile member.
DECLARE @AdultMemberNo int
SELECT @AdultMemberNo = adult_member_no FROM [dbo].[juvenile]
IF @AdultMemberNo IS null
BEGIN
--Test for a valid adult member.
DECLARE @AdultExists int
SELECT @AdultExists = count(*) FROM [dbo].[adult]
IF @AdultExists < 1
BEGIN
RAISERROR('No member exists by that number.',11,1)
SET @MemberType = 'NONE'
RETURN
END
ELSE
BEGIN
SELECT me.lastname as LastName,
me.firstname as FirstName,
me.middleinitial as MiddleInitial,
ad.street as Street,
ad.city as City,
ad.state as State,
ad.zip as ZipCode,
ad.phone_no as PhoneNumber,
ad.expr_date as ExprDate,
ad.member_no as MemberID
FROM [dbo].[member] as me LEFT JOIN
[dbo].[adult] as ad ON
ad.member_no = @MemberID
WHERE
me.member_no = @MemberID
SET @MemberType = 'ADULT'
END
END
ELSE
BEGIN
SELECT me.lastname as LastName,
me.firstname as FirstName,
me.middleinitial as MiddleInitial,
ju.adult_member_no as AdultMemberNumber,
ju.birth_date as BirthDate,
ad.street as Street,
ad.city as City,
ad.state as State,
ad.zip as ZipCode,
ad.phone_no as PhoneNumber,
ad.expr_date as ExprDate,

ju.member_no as MemberID
FROM [dbo].[member] as me LEFT JOIN
[dbo].[juvenile] as ju ON
ju.member_no = @MemberID LEFT JOIN
[dbo].[adult] as ad ON
ad.member_no = @AdultMemberNo
WHERE
me.member_no = @MemberID
SET @MemberType = 'JUVENILE'

END

--This procedure renews a membership
--by adding one year to the expiration date.
CREATE PROCEDURE [dbo].[RenewMembership]
@MemberID int
AS

BEGIN
RETURN
END

--Test to see if the member exists in library.
DECLARE @Count int
SELECT @Count = count(*) FROM [dbo].[member] as me
WHERE me.member_no = @MemberID
IF @Count < 1
BEGIN
RAISERROR('Member does not exist in this library.',11,1)
RETURN
END

--Test to see if member is a juvenile.
--If so then update the adult expiration date
--based on the adult member ID otherwise
--update based on the member ID.
DECLARE @AdultMemberID int
SELECT @AdultMemberID = adult_member_no FROM [dbo].[juvenile] as ju
WHERE ju.member_no = @MemberID
IF @AdultMemberID > 0
BEGIN
BEGIN TRANSACTION
UPDATE [dbo].[adult]
SET expr_date = DATEADD(year,1,GETDATE())
WHERE member_no = @AdultMemberID
if @@ERROR <> 0
BEGIN
RAISERROR('Error, membership not renewed.',11,1)
RETURN
END
COMMIT TRANSACTION
END
ELSE
BEGIN
BEGIN TRANSACTION
UPDATE [dbo].[adult]
SET expr_date = DATEADD(year,1,GETDATE())
if @@ERROR <> 0
BEGIN
RAISERROR('Error, membership not renewed.',11,1)
RETURN
END
COMMIT TRANSACTION
END

SQL Stored Procedures For My Library Project

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