Online Access Free Oracle.1z0-071.v2025-09-16.q232 Practice Test (Page 5)

1z0-071 Exam Question 16

Which two statements are true regarding subqueries? (Choose two.)

A.There is no limit on the number of subquery levels in the WHERE clause of a SELECT statement.

B.A subquery can be used only in SQL query statements.

C.Only two subqueries can be placed at one level.

D.A subquery can retrieve zero or more rows.

E.A subquery can appear on either side of a comparison operator.

1z0-071 Exam Question 17

The PRODUCTS table has the following structure.

Evaluate the following two SQL statements:
SQL>SELECT prod_id, NVL2 (prod_expiry_date, prod_expiry_date + 15, ' ') FROM products; SQL>SELECT prod_id, NVL (prod_expiry_date, prod_expiry_date + 15) FROM products; Which statement is true regarding the outcome?

A.Both the statements execute and give different results

B.Only the second SQL statement executes successfully

C.Both the statements execute and give the same result

D.Only the first SQL statement executes successfully

1z0-071 Exam Question 18

Evaluate the following statement.
INSERT ALL
WHEN order_total < 10000 THEN
INTO small_orders
WHEN order_total > 10000 AND order_total < 20000 THEN
INTO medium_orders
WHEN order_total > 200000 THEN
INTO large_orders
SELECT order_id, order_total, customer_id
FROM orders;
Which statement is true regarding the evaluation of rows returned by the subquery in the INSERT statement?

A.Each row is evaluated by the first WHEN clause and if the condition is false then the row would be evaluated by the subsequent when clauses.

B.All rows are evaluated by all the three WHEN clauses.

C.The INSERT statement will return an error because the ELSE clause is missing.

D.Each row is evaluated by the first WHEN clause and if the condition is true, then the row would be evaluated by the subsequent when clauses.

1z0-071 Exam Question 19

Examine the structure of the MEMBERS table:

Examine the SQL statement:
SQL > SELECT city, last_name LNAME FROM MEMBERS ORDER BY 1, LNAME DESC; What would be the result execution? (Choose the best answer.)

A.It fails because a column number and a column alias cannot be used together in the ORDER BY clause.

B.It displays all cities in descending order, within which the last names are further sorted in descending order.

C.It fails because a column alias cannot be used in the ORDER BY clause.

D.It displays all cities in ascending order, within which the last names are further sorted in descending order.

1z0-071 Exam Question 20

Examine this description of the PRODUCTS table:

Rows exist in this table with data in all the columns. You put the PRODUCTS table in read-only mode. Which three commands execute successfully on PRODUCTS?

A.ALTER TAELE products DROP COLUMN expiry_date;

B.CREATE INDEX price_idx on products (price);

C.ALTER TABLE products SET UNUSED(expiry_date);

D.TRUNCATE TABLE products;

E.ALTER TABLE products DROP UNUSED COLUMNS

F.DROP TABLE products

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