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Select statement with join Looping with cursor
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Exercise 4.13 Solution
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The first solution uses a Select statement with many joined tables:
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Solutions to the Exercises
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Inventory table
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Create Procedure prReportInventory_SQL -- return a report on assets in database As set nocount on SELECT Inventory.Inventoryid, Equipment.Make, Equipment.Model, Location.Location, Status.Status, Lease.LeaseNumber, LeaseSchedule.StartDate, LeaseSchedule.EndDate, Contact.FirstName, Contact.LastName, Inventory.Rent, Inventory.Lease, Inventory.Cost, AcquisitionType.AcquisitionType, Inventory.AcquisitionDate FROM AcquisitionType INNER JOIN Inventory ON AcquisitionType.AcquisitionTypeId = Inventory.AcquisitionTypeID INNER JOIN Contact ON Inventory.OwnerId = Contact.ContactId INNER JOIN Equipment
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SQL Server 2000 Stored Procedure Programming
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ON Inventory.EquipmentId = Equipment.EquipmentId INNER JOIN Lease ON Inventory.LeaseId = Lease.LeaseId INNER JOIN LeaseSchedule ON Inventory.LeaseScheduleId = LeaseSchedule.ScheduleId INNER JOIN Location ON Inventory.LocationId = Location.LocationId INNER JOIN Status ON Inventory.StatusId = Status.StatusId Return
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The solution using a cursor is far more complicated and executes more slowly:
Create Procedure prReportInventory_Cursor -- return a report on assets in database @debug int = 0 As declare @Inventoryid int, @EquipmentId int, @LocationId int, @StatusId int, @LeaseId int, @LeaseScheduleId int, @OwnerId int, @Rent smallmoney, @Lease smallmoney, @Cost smallmoney, @AcquisitionTypeID int, @AcquisitionDate smalldatetime, @Make varchar(50), @model varchar(50), @Location varchar(50), @Status varchar(50), @LeaseNumber varchar(50), @StartDate smalldatetime, @EndDate smalldatetime, @FirstName varchar(30), @LastName varchar(30), @AcquisitionType varchar(20) create table #InventoryDenormalized(
Appendix B:
Solutions to the Exercises
InventoryId int, Make varchar(50), Model varchar(50), Location varchar(50), Status varchar(50), LeaseNumber varchar(50), StartDate smalldatetime, EndDate smalldatetime, FirstName varchar(30), LastName varchar(30), Rent smallmoney, Lease smallmoney, Cost smallmoney, AcquisitionType varchar(20), AcquisitionDate smalldatetime) DECLARE @CrsrVar CURSOR SET @CrsrVar = CURSOR FOR SELECT Inventoryid, EquipmentId, LocationId, StatusId, LeaseId, LeaseScheduleId, OwnerId, Rent, Lease, Cost, AcquisitionTypeID, AcquisitionDate from Inventory OPEN @CrsrVar FETCH NEXT FROM @CrsrVar INTO @Inventoryid, @EquipmentId, @LocationId , @StatusId, @LeaseId , @LeaseScheduleId, @OwnerId, @Rent , @Lease , @Cost , @AcquisitionTypeID, @AcquisitionDate WHILE (@@FETCH_STATUS = 0) BEGIN
SQL Server 2000 Stored Procedure Programming
if @debug <> 0 select @Inventoryid, @EquipmentId, @LocationId , @StatusId, @LeaseId , @LeaseScheduleId, @OwnerId, @Rent , @Lease , @Cost , @AcquisitionTypeID, @AcquisitionDate -- get rest of info. select @Make = Make, @Model = Model from Equipment where Equipmentid = @EquipmentId select @Location = Location from Location where LocationId = @Locationid select @Status = Status from Status where StatusId = @Statusid
select @LeaseNumber = LeaseNumber from Lease where LeaseId = @Leaseid select @StartDate = StartDate, @EndDate = EndDate from LeaseSchedule where ScheduleId = @Leasescheduleid select @FirstName = FirstName, @LastName = LastName from Contact where ContactId = @Ownerid
Appendix B:
Solutions to the Exercises
select @AcquisitionType = AcquisitionType from AcquisitionType where AcquisitionTypeId = @AcquisitionTypeid -- insert everything insert into #InventoryDenormalized( InventoryId, Make, Model, Location, Status , LeaseNumber , StartDate , EndDate , FirstName , LastName, Rent, Lease , Cost, AcquisitionType, AcquisitionDate) values ( @InventoryId, @Make, @Model, @Location, @Status, @LeaseNumber, @StartDate, @EndDate, @FirstName, @LastName, @Rent, @Lease, @Cost, @AcquisitionType, @AcquisitionDate)
FETCH NEXT FROM @CrsrVar INTO @Inventoryid, @EquipmentId, @LocationId , @StatusId, @LeaseId , @LeaseScheduleId, @OwnerId, @Rent , @Lease , @Cost , @AcquisitionTypeID, @AcquisitionDate END CLOSE @CrsrVar DEALLOCATE @CrsrVar select * from #InventoryDenormalized drop table #InventoryDenormalized return 0
SQL Server 2000 Stored Procedure Programming
CHAPTER 5. FUNCTIONS
Exercise 5.1
Create a Select statement that returns the quarter from the current date in the following format: 3Q2000 .
Exercise 5.1 Solution
Use the following code:
Select DATENAME(q, GETDATE()) + 'Q' + DATENAME(yyyy, GETDATE())
Exercise 5.2
Create a table called ExpectedShippingDate that contains the following fields:
w s s s s v
ExpectedShippingDateId (offset from the starting date) ExpectedShippingDate ExpectedShippingDateOfMonth ExpectedShippingMonth ExpectedShippingYear ExpectedShippingQuarter
The table should be filled with one record for each date since 1/1/2000. Create a stored procedure Setup_ExpectedShippingDate to fill it.
Exercise 5.2 Solution
Use the following statement to create the table:
CREATE TABLE [dbo].[ExpectedShipDate] ( [ExpectedShipDateId] [smallint] NOT NULL , [ExpectedShipDate] [smalldatetime] NULL , [ExpectedShippingMonth] [tinyint] NULL , [ExpectedShippingDay] [tinyint] NULL , [ExpectedShippingYear] [smallint] NULL ,
Appendix B:
Solutions to the Exercises
[ExpectedShippingQuarter] [char] (6) NULL ) ON [PRIMARY] GO
The table can be filled using the following stored procedure:
CREATE PROCEDURE Setup_ExpectedShipDate @ExpectedShipDate smalldatetime = '1/1/2000', @day_number smallint = 5000 as declare @ExpectedShipDateId declare @ExpectedShippingMonth declare @ExpectedShippingDay declare @ExpectedShippingYear declare @ExpectedShippingQuarter declare @ExpectedShipDatecurrent declare @intErrorCode set nocount on select @intErrorCode = @@Error If @intErrorCode = 0 begin select @ExpectedShipDateId = 0, @ExpectedShipDatecurrent = @ExpectedShipDate select @intErrorCode = @@Error end while @intErrorCode = 0 and @day_number> 0 begin If @intErrorCode = 0 begin select @ExpectedShipDateId = @ExpectedShipDatecurrent), @ExpectedShippingDay = datepart (dd, @ExpectedShipDatecurrent), @ExpectedShippingYear = datepart (yy, @ExpectedShipDatecurrent) select @intErrorCode = @@Error end @ExpectedShipDateId + 1, @ExpectedShippingMonth = datepart (mm, smallint tinyint tinyint smallint char(6) smalldatetime int -- not (4) anymore
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