136.View the Exhibit and examine the structure of the PRODUCTS table.

136.View the Exhibit and examine the structure of the PRODUCTS table.
Which two tasks would require subqueries? (Choose two.)

A.Display the minimum list price for each product status.
B.Display all suppliers whose list price is less than 1000.
C.Display the number of products whose list price is more than the average list price.
D.Display the total number of products supplied by supplier 102 and have product status as 'obsolete'.
E.Display all products whose minimum list price is more than the average list price of products and have the status 'orderable'.
答案：CE
解析：
A:select prod_status,min(prod_min_price) from PRODUCTS group by prod_status
B:select prod_name from PRODUCTS where prod_list_price <1000;
C:select count(*) from PRODUCTS where prod_list_price>select avg(prod_list_price) from PRODUCTS
D:select count(*) from PRODUCTS where prod_id=102 and prod_status='obsolete'
E:select prod_pname from PRODUCTS  where prod_status='obsolete' group by prod_pname having min(prod_min_price)>select avg(prod_list_price) from PRODUCTS