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1. I need to know which of our sales reps don’t have any customers, all regions. (Hint: This is a different type of JOIN. Also, test for nulls and eliminate the managers.)
2. tell me which region managers are responsible for those sales reps who don’t have customers in all regions. Display the region ID, I can get the full name separately. (Hint: You’ll need to see the entire employee/customer list to provide this answer)
create a calculated field with the column label Discount Price that subtracts the Price times the Current Discount from the Price.
SELECT O.ORDERID, o.SALESPERSONID, S.SALESPERSONID
FROM ORDER_T o FULL JOIN SALESPERSON_t s
ON O.SALESPERSONID = S.SalespersonID
An INNER JOIN
A FULL JOIN
The ROLLBACK fails because it is only for UPDATE
Records from the table are deleted
The record(s) that were inserted do not get committed to the table
The records are left inconsistent
Only works when combined with a ROLLBACK.
Only works within a transaction.
not needed because the server always commits changes.
Makes changes outside a transaction permanen.t