Question

Thanks for all the help so far, now I just ran into a major problem!

I have 2 tables that contains daily commissions, and for each day, I have to SUM the daily totals from each table. Daily limit is maxed at $100, so anything over $100 for the day is $100.

Employee (employeeID INT PK, totalCommisions INT )

Now the 2 tables that contain comission data are:

ProductSales (productID INT, employeeID INT, commission INT, Created DATETIME)

Referrals (referalID INT, employeeID INT, commission INT, Created DATETIME).

An employee can have 10 product sales in a day, and 50 referrals.
The key point is, the SUM of the commission for both productSales and Referrals, if over $100, is set to $100 (i.e. daily $100 max).

The query I need is to update the Employee tables TotalCommission column with the total commisions earned for each employee (entire period, no date range).

The query will have to use a CASE statement since the daily total cannot be over $100 (SUM of commissions from ProductSales and Referrals for the day).

Previous Question:
Query to get sum of an employees commission

Answer 1

Maybe something like this –

select employeeID, Year(Created), Month(Created), Day(Created),
case
  WHEN sum(Commission) > 100 THEN 100
  ELSE sum(Commission)
END
from
(
  select employeeID, Created, commission from ProductSales
  UNION ALL
  select employeeID, Created, commission from Referrals
) Commissions
group by employeeID, Year(Created), Month(Created), Day(Created)