Stored procedure wrong output - sql

Question

I have this stored procedure that returns data on a selected week, as in the Company, Name, Expected Work, and Work done between the 19/10/2015 and the 25/10/2015 (per example).
I have just recently added the Expected Work line and for some odd reason the output differs from one week to another, when the value should be the same.
Company1 - Christopher - 35 - 35 | On one week can give the following on another :
Company1 - Christopher - 350 - 35
I have just realized the value isn't correct when there is a value to Work done, if there is no work recorded the Expected Work has the right value.
Here is the procedure :
ALTER procedure [dbo].[spGetWeeklyActivityByEmployee]
#startDate date
, #endDate date
as
set datefirst 1 -- Monday
select
Company.Name as [Company]
, Employee.FirstName + ' ' + Employee.LastName as [Name]
, sum(UserActivity.Cost) as [Recorder Time]
, sum(Employee.ExpectedTime) as [Expected Time] // I have added this line, not sure if it's correct
from
dbo.Employee
inner join
dbo.Company on Company.CompanyId = Employee.CompanyId
left join
dbo.UserActivity on UserActivity.Login = Employee.Login
and UserActivity.CalendarDate >= #startDate
and UserActivity.CalendarDate <= #endDate
where
(Employee.EntranceDate is null
or YEAR(Employee.EntranceDate) < YEAR(#startDate)
or (YEAR(Employee.EntranceDate) = YEAR(#startDate)
and DATEPART(WEEK, Employee.EntranceDate) <= DATEPART(WEEK, #startDate)))
and (Employee.ExitDate is null
or YEAR(Employee.ExitDate) > YEAR(#endDate)
or (YEAR(Employee.ExitDate) = YEAR(#endDate)
and DATEPART(WEEK, Employee.ExitDate) >= DATEPART(WEEK, #endDate)))
group by
Company.Name, Employee.FirstName + ' ' + Employee.LastName
return 0
Am I missing something? Is the way I retrieve Expected Time wrong?
EDIT :
Here is the part in the code where I save the information in an array :
// create and open a connection object
SqlConnection conn = new SqlConnection(System.Configuration.ConfigurationManager.ConnectionStrings["DefaultConnection"].ConnectionString);
conn.Open();
// 1. create a command object identifying
// the stored procedure
SqlCommand cmd = new SqlCommand("spGetWeeklyActivityByEmployee", conn);
// 2. set the command object so it knows
// to execute a stored procedure
cmd.CommandType = CommandType.StoredProcedure;
// 3. add parameter to command, which
// will be passed to the stored procedure
cmd.Parameters.Add(new SqlParameter("#startDate", wk1));
cmd.Parameters.Add(new SqlParameter("#endDate", wk2));
// execute the command
rdr = cmd.ExecuteReader();
string[] tab_company = new string[31]; // Don't mind the sizes
string[] tab_name = new string[31];
string[] tab_expectedtime = new string[31];
string[] tab_rectime = new string[31];
int counter;
counter = 0;
while (rdr.Read())
{
tab_company[counter] = rdr["Company"].ToString();
tab_name[counter] = rdr["Name"].ToString();
tab_expectedtime[counter] = rdr["Expected Time"].ToString();
tab_rectime[counter] = rdr["Recorder Time"].ToString();
counter++;
}
Perhaps the change in value comes from here?

Answer 1

Just take away the SUM() from Employee.ExpectedTime and add this to your GROUP BY