Author Question: Which of the following SQL statements is a correctly stated correlated subquery? A) SELECT ... (Read 94 times)

Jramos095 · **on:** Jul 7, 2018

Which of the following SQL statements is a correctly stated correlated subquery?

A) SELECT C1.CustName, C1.SalesRepNo
FROM CUSTOMER C1
WHERE C1.SalesRepNo IN
(SELECT S1.SalesRepNo
FROM SALESREP S1
WHERE S1.RepName = 'Smith');
B) SELECT C1.CustName, C1.SalesRepNo
FROM CUSTOMER C1
WHERE C1.SalesRepNo IN
(SELECT S1.SaleRepNo
FROM SALESREP S1
WHERE S1.RepName = 'Smith')
AND C1.SalesRepNo=S1.SalesRepNo);
C) SELECT C1.CustName, C1.SalesRepNo
FROM CUSTOMER C1
WHERE C1.SalesRepNo IN
(SELECT S1.SaleRepNo
FROM SALESREP S1
WHERE S1.RepName = 'Smith')
AND C1.SalesRepNo<>S1.SalesRepNo);
D) SELECT C1.CustName, C1.SalesRepNo
FROM CUSTOMER C1
WHERE C1.SalesRepNo IN
(SELECT C2.SaleRepNo
FROM CUSTOMER C2
WHERE C1.SalesRepNo=C2.SalesRepNo);
AND C1.OrderNo<>C2.OrderNo);

Question 2

SQL Server security roles provide a simple way to control user privileges in a database.

Indicate whether the statement is true or false