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Oracle Introduction to Oracle9i: SQL Sample Questions:

1. Which two statements are true regarding the ORDER BY clause? (Choose two)

A) The ORDER BY clause must precede the WHERE clause.
B) The sort is in descending order by default.
C) The sort is in ascending by order by default.
D) The ORDER BY clause is executed on the client side.
E) The ORDER BY clause comes last in the SELECT statement.
F) The ORDER BY clause is executed first in the query execution.

2. You define a multiple-row subquery in the WHERE clause of an SQL query with a comparison operator "=".
What happens when the main query is executed?

A) The main query executes with all the values returned by the subquery.
B) You cannot define a multiple-row subquery in the WHERE clause of a SQL query.
C) The main query fails because the multiple-row subquery cannot be used with the comparison operator.
D) The main query executes with the first value returned by the subquery.
E) The main query executes with the last value returned by the subquery.

3. You added a PHONE_NUMBER column of NUMBER data type to an existing EMPLOYEES table. The EMPLOYEES table already contains records of 100 employees. Now, you want to enter the phone numbers of each of the 100 employees into the table.
Some of the employees may not have a phone number available.
Which data manipulation operation do you perform?

A) UPDATE
B) INSERT
C) ADD
D) MERGE
E) You cannot enter the phone numbers for the existing employee records.
F) ENTER

4. The DBA issues this SQL command:
CREATE USER scott IDENTIFIED by tiger;
What privileges does the user Scott have at this point?

A) all the privileges of a default user
B) no privileges
C) only the SELECT privilege
D) only the CONNECT privilege

5. Which three SELECT statements displays 2000 in the format "$2,000.00"? (Choose three)

A) SELECT TO CHAR (2000, '$2,000.00') FROM dual;
B) SELECT TO CHAR (2000, '$9,999.99') FROM dual;
C) SELECT TO CHAR (2000,'$#,###.##') FROM dual;
D) SELECT TO CHAR (2000, '$N,NNN.NN') FROM dual;
E) SELECT TO CHAR (2000, '$9,999.00') FROM dual;
F) SELECT TO CHAR (2000, '$0,000.00') FROM dual;

Solutions: