Summarize the employees by net revenue and not order date? - sql

Question

The sales director would like to reward the employees with net sales over $150,000 for the years 2015 and 2016 combined. The Sales Manager would like the resulting query to display the following columns: Employee ID, Employee Name (First and Last as one field), Total Net Sales per employee. (Both years should be combined into one number.)
Sort largest to smallest.
We cannot figure out how to combine the revenues by the employees.
select o.EmpID, EmpFName + ' ' + EmpLastName as "Employee Name"
, sum((salesunitprice*quantitysold)-((salesunitprice*quantitysold)*ItemDiscount)) as "Net Sales"
from EMPLOYEE e
inner join ORDERS o on e.EmpID = o.EmpID
inner join SALES_INVOICE si on o.OrderID = si.OrderID
inner join SALES_INVOICE_DETAIL sd on si.SalesInvoiceID = sd.SalesInvoiceID
group by o.EmpID, EmpFName + ' ' + EmpLastName, OrderDate
having OrderDate between '2015-01-01' and '2016-12-31'
order by [Employee Name]
I expected the output to be the total per employee, but it is broken out by individual order dates instead of summing the total net sales per employee.

Answer 1

Remove OrderDate from the GROUP BY:
select o.EmpID, EmpFName + ' ' + EmpLastName as "Employee Name",
sum(salesunitprice * quantitysold * (1 - discount)) as "Net Sales"
from EMPLOYEE e join
ORDERS o
on e.EmpID = o.EmpID join
SALES_INVOICE si
on o.OrderID = si.OrderID join
SALES_INVOICE_DETAIL sd
on si.SalesInvoiceID = sd.SalesInvoiceID
where o.OrderDate >= '2015-01-01' and
o.OrderDate < '2017-01-01'
group by o.EmpID, EmpFName + ' ' + EmpLastName
having sum(salesunitprice * quantitysold * (1 - discount)) >= 150000
order by [Employee Name]
Notes:
You want to do the date filtering before the aggregation.
BETWEEN doesn't work with datetimes. The formulation with >= and < works with both dates and datetimes.
I have simplified the arithmetic to calculate net sales.
The important part is removing the extra key in the GROUP BY.
And you want a having clause to filter the net sales.