mysql - 如何在mysql工作台中创建存储过程？

Question

我知道 Microsoft sql server，并且我认为此代码不包含错误。但是Mysql抛出了一个我无法理解的异常。有人可以为我解释一下吗请给我mysql函数、 View 、存储过程示例网站名称

CREATE PROCEDURE spInsertEmployee
(
 Employee_Name nvarchar(20),
 Employee_Surname nvarchar(20),
 Department_Name nvarchar(20)
)
BEGIN
declare Department_Id int; /*error*/
select Id into Department_Id from tblDepartment where      tblDepartment.Department_Name=Department_Name;
insert into tblVeri(Employee_Name,Employee_Surname,Department_Id)     values(Employee_Name,Employee_Surname,Department_Id);
END /*error*/

Answer 1

您必须为参数定义IN。

DELIMITER $$

CREATE PROCEDURE spInsertEmployee 
(
IN Employee_Name nvarchar(20), 
IN Employee_Surname nvarchar(20), 
IN Department_Name nvarchar(20)
)
BEGIN
declare Department_Id INT;

select Id into Department_Id from tblDepartment WHERE tblDepartment.Department_Name=Department_Name;
insert into tblVeri(Employee_Name,Employee_Surname,Department_Id)     VALUES(Employee_Name,Employee_Surname,Department_Id);

END;