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Oracle Database SQL Sample Questions (Q206-Q211):

NEW QUESTION # 206
Examine the structure of the PROMOTIONS table:

Management requires a report of unique promotion costs in each promotion category.
Which query would satisfy this requirement?

A. SELECT DISTINCT promo_cost, promo_category FROM promotions;
B. SELECT DISTINCT promo_category, promo_cost FROM promotions ORDER BY 1;
C. SELECT promo_category, DISTINCT promo_cost FROM promotions;
D. SELECT DISTINCT promo_cost, DISTINCT promo_category FROM promotions;

Answer: B

NEW QUESTION # 207
Examine this query:
SELECT INTERVAL '100' MONTH DURATION FROM DUAL;
What will be the output?

A. an error
B. DURATION
+08
C. DUFATION
+100
D. DURATION
+08-04

Answer: D

Explanation:
When you use the INTERVAL literal for months, the result is displayed in years and months if the total number of months exceeds 12.
In the query given:
SELECT INTERVAL '100' MONTH DURATION FROM DUAL;
the output will display the interval of 100 months converted to years and the remaining months. 100 months is equal to 8 years and 4 months. Hence, the correct answer is:
DURATION +08-04

NEW QUESTION # 208
You issue this command which succeeds:
SQL> DROP TABLE products;
Which three statements are true?

A. All the table's indexes if any exist, are invalidated but retained.
B. Table data is deleted but the table structure is retained.
C. Any uncommitted transaction in the session is committed.
D. All existing views and synonyms that refer to the table are invalidated but retained.
E. Table data and the table structure are deleted.

Answer: C,D,E

NEW QUESTION # 209
View the Exhibit and examine the structure of the ORDER_ITEMS table.

You must select the ORDER_ID of the order that has the highest total value among all the orders in the ORDER_ITEMS table.
Which query would produce the desired result?
SELECT order_id

A. FROM order_items
WHERE (unit_price*quantity) = (SELECT MAX(unit_price*quantity)
FROM order_items
GROUP BY order_id)
B. FROM order_items
WHERE(unit_price*quantity) = (SELECT MAX(unit_price*quantity)
FROM order_items)
GROUP BY order_id;
SELECT order_id
C. FROM order_items
WHERE(unit_price*quantity) = MAX(unit_price*quantity)
GROUP BY order_id;
SELECT order_id
D. FROM order_items
GROUP BY order_id
HAVING SUM(unit_price*quantity) = (SELECT MAX(SUM(unit_price*quantity)) FROM order_items GROUP BY order_id); SELECT order_id

Answer: D

NEW QUESTION # 210
Which two statements are true regarding the USINGand ONclauses in table joins?

A. The WHEREclause can be used to apply additional conditions in SELECTstatements containing the ON or the USINGclause.
B. A maximum of one pair of columns can be joined between two tables using the ONclause.
C. The ON clause can be used to join tables on columns that have different names but compatible data types.
D. Both USINGand ONclauses can be used for equijoins and nonequijoins.

Answer: A,C

Explanation:
Explanation/Reference:

NEW QUESTION # 211
......

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