How to return a list of courses between 2 months in SQL Server 2012 Management Studio? - sql

Question

How to create a stored procedure in SQL Server 2012 that returns a list of courses running between 2 months?
I've written code something like this:
create procedure final_RTrainerqualification
(#TrainerID char(10),
#Coursecode char(4) OUTPUT,
#qualcode nvarchar(30),
#coursedate datetime output)
DECLARE #MinDate DATE = '20160401',
#MaxDate DATE = '20160601';
SELECT coursedate
FROM dbo.RTrainerqualification
WHERE coursedate >= #MinDate
AND coursedate < #MaxDate;`
It should be returning the list of courses that run between these 2 dates mentioned but I am new to stored procedure so my question is how do I assign coursedates to the courses and make it return the list?
Edit- used T-SQL to recreate the code
#Coursecount smallint
declare #Coursedatebeg datetime, #Coursedateend datetime, #CourseCode char(4),#TrainerID char(10);
select #Coursedatebeg = '2015-04-20'
select #Coursedateend = '2015-06-20';
while #Coursedatebeg <= #Coursedateend
begin
select #CourseCode = #Coursedateend;
select #Coursecount = count(*) from RCourseInstance
where CourseCode between 'R222' and 'R224';
if #CourseCount <> 0
begin
Print 'Courses running between April and June 2015 ' ;
select Coursedate,CourseCode from RCourseInstance as t
inner join Coursedate as d on t.Coursedate = d.Coursedate
inner join CourseCode as c on c.CourseCode = t.CourseCode
where CourseCode between 'R222' and 'R224';
end
else
print 'No courses are running between these dates ' ;
set #Coursedatebeg = #Coursedatebeg + 2;
end
It is returning the print statement but also declaring that invalid object name Coursedate
what have I done incorrectly here?

Answer 1

Firstly, use ISO date strings to avoid regional settings issues. You are only returning the coursedate in the SELECT. If you want further information such as the coursecode then add it into the SELECT. i.e.
DECLARE #MinDate DATE = '2016-04-01',
#MaxDate DATE = '2016-06-01'
SELECT coursedate, coursecode, *
FROM dbo.RTrainerqualification
WHERE coursedate >= #MinDate
AND coursedate < #MaxDate;
The OUTPUT variables are not required - these are needed when you want to return a single value rather than a list.
This is fundamental SQL stuff so I would strongly recommend you do some reading on this. There is a simple stored procedure tutorial here to start off with.