/*====================================================
*描述： ? ? ? ? ? ?存儲過程知識點總結(jié)，以Northwind數(shù)據(jù)庫的Employees表為例
======================================================*/

--========================1.沒有參數(shù)的存儲過程================
create procedure usp_NoParameterSelect
as
begin
select * from dbo.Employees
end

GO

--========================執(zhí)行測試========================
EXECUTE usp_NoParameterSelect

GO
--=======================2.帶參數(shù)的存儲過程===================

create procedure usp_ParameterSelect
(
@employeeID INT
)
as

begin
select * from dbo.Employees
where EmployeeID = @employeeID
end

--=======================執(zhí)行測試===========================
EXECUTE usp_ParameterSelect 1

GO
--=======================3.帶多個參數(shù)的存儲過程==================

create procedure usp_MultiParameterSelect
@employeeID INT,
@employeeFirstName nvarchar(10)--要加上參數(shù)類型的長度
as
begin
select * from dbo.Employees
where EmployeeID = @employeeID
and FirstName = @employeeFirstName
end

--========================執(zhí)行測試===========================
EXECUTE usp_MultiParameterSelect 1,'Nancy'

GO

--=======================4.output輸出存儲過程====================
create procedure usp_OutputSelect
@employeeID int ,
@employeeFirstName nvarchar(10) output
as
begin
select @employeeFirstName = FirstName from Employees
where EmployeeID = @employeeID
end

--=======================執(zhí)行測試=============================
declare @name nvarchar(10)
execute usp_OutputSelect 1,@name output
select @name as name
GO

--======================5.return輸出存儲過程======================

create procedure usp_ReturnSelect
@employeeFirstName nvarchar(10)
AS
begin
declare @employeeID INT
select @employeeID = EmployeeID from Employees
where FirstName = @employeeFirstName

return @employeeID --**返回值必須是INT類型**
end

GO

--======================執(zhí)行測試===============================
declare @employeeID INT
execute @employeeID = usp_ReturnSelect 'Nancy'
print @employeeID

GO

--=====================6.同時有output和return輸出的存儲過程=============

create procedure usp_OutputAndReturnSelect
@firstName nvarchar(10),
@lastName nvarchar(20) output
as
begin
declare @employeeID INT;

select @employeeID = EmployeeID,@lastName=LastName from Employees
where FirstName = @firstName

return @employeeID
end

GO

--======================執(zhí)行測試================================
declare @employeeID INT
declare @lastName nvarchar(20)
execute @employeeID = usp_OutputAndReturnSelect 'Nancy',@lastName output
select @employeeID,@lastName

/*===========================================================
*****************************未完待續(xù)***************************************
*============================================================*/

轉(zhuǎn)載于:https://www.cnblogs.com/ucos/p/3512965.html

總結(jié)

以上是生活随笔為你收集整理的存储过程知识总结【一】的全部內(nèi)容，希望文章能夠幫你解決所遇到的問題。

如果覺得生活随笔網(wǎng)站內(nèi)容還不錯，歡迎將生活随笔推薦給好友。