sql-server - SQL Server : how to create a stored procedure

Question

我正在从一本书中学习sql，并且正在尝试编写一个存储过程，但我不相信我做得正确。以下方式在 Microsoft SQL 中无效吗？如果不是，那么什么时候有效(如果有效)？

create procedure dept_count(in dept_name varchar(20), out d_count integer)
   begin
     select count(*) into d_count
     from instructor
     where instructor.dept_name=dept_count.dept_name
   end

我收到以下错误

Msg 156, Level 15, State 1, Procedure wine_change, Line 1 Incorrect syntax near the keyword 'in'.

Answer 1

T-SQL

/* 
Stored Procedure GetstudentnameInOutputVariable is modified to collect the
email address of the student with the help of the Alert Keyword
*/



CREATE  PROCEDURE GetstudentnameInOutputVariable
(

@studentid INT,                   --Input parameter ,  Studentid of the student
@studentname VARCHAR (200) OUT,    -- Output parameter to collect the student name
@StudentEmail VARCHAR (200)OUT     -- Output Parameter to collect the student email
)
AS
BEGIN
SELECT @studentname= Firstname+' '+Lastname, 
    @StudentEmail=email FROM tbl_Students WHERE studentid=@studentid
END