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Oracle Database SQL Sample Questions (Q126-Q131):

NEW QUESTION # 126
Examine this query:
SELECT employee_id, first_name, salary
FROM employees
WHERE hiredate > 61*
Which two methods should yours to prevent prompting for hire date value when this queries executed?

A. Execute the SET VERIFY OFF command before executing the query.
B. Execute the SET VERIFY ON command before executing the query.
C. Replace 's1' with &1'in the query:
D. Store the query in a script and pass the substitution value to the script when executing it.
E. Use the DEFINE command before executing the query
F. Use the UNDEFINE command before executing the query.

Answer: A,E

Explanation:
To prevent the prompting for a substitution variable value when executing a query:
* B. Execute the SET VERIFY OFF command before executing the query: This command turns off the substitution variable prompting, which means that SQL*Plus will not prompt for a value and will use whatever value is currently set for that variable.
* F. Use the DEFINE command before executing the query: By using the DEFINE command to set a value for the variable before the query execution, you ensure that SQL*Plus uses this predefined value instead of prompting for it.
References:
* Oracle SQL*Plus User's Guide and Reference, which discusses how to manage substitution variables.

NEW QUESTION # 127
Examine the data in the CUSTOMERStable:

You want to list all cities that have more than one customer along with the customer details.
Evaluate the following query:

Which two JOIN options can be used in the blank in the above query to give the correct output? (Choose two.) LEFT OUTER JOIN

A. NATURAL JOIN
B. RIGHT OUTER JOIN
C. JOIN
D. FULL OUTER JOIN
E. LEFT OUTER JOIN

Answer: B,C

NEW QUESTION # 128
View the exhibits and examine the structures of the COSTSand PROMOTIONStables.

Evaluate the following SQL statement:
SQL> SELECT prod_id FROM costs
WHERE promo_id IN (SELECT promo_id FROM promotions
WHERE promo_cost < ALL
( SELECT MAX(promo_cost) FROM promotions
GROUP BY (promo_end_date-
promo_begin_date)));
What would be the outcome of the above SQL statement?

A. It displays prod IDs in the promo with the lowest cost.
B. It displays prod IDs in the promos with the highest cost in the same time interval.
C. It displays prod IDs in the promos which cost less than the highest cost in the same time interval.
D. It displays prod IDs in the promos with the lowest cost in the same time interval.

Answer: C

NEW QUESTION # 129
Which three statements are true regarding the data types?

A. The BLOBdata type column is used to store binary data in an operating system file.
B. The value for a CHARdata type column is blank-padded to the maximum defined column width.
C. The minimum column width that can be specified for a VARCHAR2data type column is one.
D. A TIMESTAMPdata type column stores only time values with fractional seconds.
E. Only one LONGcolumn can be used per table.

Answer: B,C,E

NEW QUESTION # 130
Examine the structure of the INVOICE table.
NameNull?Type
--------------------------------------------------
INV_NONOT NULLNUMBER(3)
INV_DATEDATE
INV_AMTNUMBER(10,2)
Which two SQL statements would execute successfully?

A. SELECT inv_no, NVL2(inv_date, sysdate-inv_date, sysdate)FROM invoice;
B. SELECT inv_no, NVL2(inv_amt, inv_amt*.25, 'Not Available')FROM invoice;
C. SELECT inv_no, NVL2(inv_amt, inv_date, 'Not Available')FROM invoice;
D. SELECT inv_no, NVL2(inv_date, 'Pending', 'Incomplete')FROM invoice;

Answer: A,D

NEW QUESTION # 131
......

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