SQL Server-日期,大于和小于
我有一个存储过程:SQL Server-日期,大于和小于,sql,sql-server,sql-server-2008,Sql,Sql Server,Sql Server 2008,我有一个存储过程: create procedure [dbo].[GetCarsByDates] (@startDate date, @returnDate date) as SELECT ManufacturerName, ModelName, CreationYear, Gear, CurrentKM, Picture, DATEDIFF(D, @startDate, @returnDa
create procedure [dbo].[GetCarsByDates]
(@startDate date, @returnDate date)
as
SELECT
ManufacturerName, ModelName,
CreationYear,
Gear, CurrentKM,
Picture,
DATEDIFF(D, @startDate, @returnDate) * PricePerDay AS [Totalprice],
PricePerDay, PricePerDayDelayed,
InventoryCars.LicensePlate
FROM
Models
JOIN
Manufacturers ON Models.ManufacturerID = Manufacturers.ManufacturerID
JOIN
InventoryCars ON InventoryCars.ModelID = Models.ModelID
JOIN
CarsForRent ON CarsForRent.LicensePlate = InventoryCars.LicensePlate
WHERE
CarsForRent.RentalStartDate < @startDate
AND CarsForRent.RentalReturnDate < @returnDate
AND CarsForRent.RentalReturnDate < @startDate
ORDER BY
ManufacturerName, ModelName
创建过程[dbo]。[GetCarsByDates]
(@startDate日期,@returnDate日期)
作为
挑选
制造商名称、型号名称、,
创造性思维,
档位,当前公里数,
图片,
DATEDIFF(D,@startDate,@returnDate)*每日价格为[总价],
PricePerDay,PricePerDay延迟,
车辆目录牌
从…起
模型
参加
模型上的制造商。ManufacturerID=制造商。ManufacturerID
参加
InventoryCars.ModelID=Models.ModelID上的InventoryCars
参加
CarsForRent ON CarsForRent.LicensePlate=库存车.LicensePlate
哪里
CarsCurrent.RentalStartDate<@startDate
和CarsCurrent.RentalReturnDate<@returnDate
和CarsCurrent.RentalReturnDate<@startDate
订购人
制造商名称,型号名称
我希望能够选择开始和返回日期的属性。用户输入的开始日期必须大于返回日期,这正是我所做的,但它仍然不能正常工作
问题是我得到了不可用项的行结果
我的where子句有什么问题?我觉得您的查询应该像下面这样写。 我假设您需要查询从
startDate
到returnDate
的所有可用车辆,并需要根据CarsForRent
表的列进行检查
CarsForRent.RentalStartDate
和CarsForRent.RentalReturnDate
create procedure [dbo].[GetCarsByDates]@startDate date, @returnDate date
as
BEGIN
select DISTINCT ManufacturerName, ModelName,
CreationYear,Gear, CurrentKM,
Picture,
DATEDIFF(D, @startDate, @returnDate)*PricePerDay as[Totalprice],
PricePerDay,PricePerDayDelayed, InventoryCars.LicensePlate
from Models
join Manufacturers on Models.ManufacturerID=Manufacturers.ManufacturerID
join InventoryCars on InventoryCars.ModelID=Models.ModelID
join CarsForRent on CarsForRent.LicensePlate=InventoryCars.LicensePlate
where
@startDate > CarsForRent.RentalReturnDate AND
CarsForRent.RentalReturnDate >CarsForRent.RentalStartDate
AND @startDate<=@returnDate
order by ManufacturerName, ModelName
END
我已经制作了一个提琴样本
请在左侧添加值并使用用例
如果希望用户仅将startdate设置为大于returndate的值,可以在实际查询之前使用if块执行此操作。例如:
create procedure [dbo].[GetCarsByDates](@startDate date, @returnDate date)
as
if @startDate <= @returnDate OR @startDate IS NULL OR @returnDate IS NULL
BEGIN
/* maybe do some stuff here */
RAISERROR 'Errormessage', 11,1´;
RETURN;
END
/* here Comes your query without having to check the correctnes of the input-values */
创建过程[dbo]。[GetCarsByDates](@startDate日期,@returnDate日期)
作为
如果@startDate你需要像我从你的问题中理解的那样做
where
(@startDate > @returnDate) and RentalReturnDate < @startDate
哪里
(@startDate>@returnDate)和RentalReturnDate<@startDate
这是刚刚投票表决的结果,这让我想知道,SQL Server的哪个版本是语法之间的版本?
where
(@startDate > @returnDate) and RentalReturnDate < @startDate