Test Your Oracle DATE Functions Knowledge with This Quiz

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True / False

In Oracle, the SYSDATE function returns the current date and time from the database server.

True False

The SYSDATE function returns the current date and time according to the database server's clock.

True / False

The ADD_MONTHS function in Oracle adds a specified number of months to a date.

True False

The ADD_MONTHS function adds a specified number of months to a given date.

True / False

In Oracle, the CURRENT_DATE function returns the current date and time in the session time zone.

True False

The CURRENT_DATE function returns the current date and time in the time zone of the current session.

True / False

In Oracle, the LAST_DAY function returns the last day of the month for a given date.

True False

The LAST_DAY function returns the last day of the month for the specified date.

True / False

The MONTHS_BETWEEN function in Oracle calculates the number of months between two dates.

True False

The MONTHS_BETWEEN function calculates the number of months between two dates, returning a fractional value if the dates are not exactly an integer number of months apart.

True / False

In Oracle, the NEXT_DAY function returns the date of the next specified weekday after a given date.

True False

The NEXT_DAY function returns the date of the next specified weekday (e.g., 'MONDAY', 'TUESDAY') after the given date.

True / False

The TRUNC function in Oracle can truncate a date to a specified unit, such as year, month, or day.

True False

The TRUNC function can truncate a date to the specified unit, removing the smaller units of time (e.g., truncating to the year removes month, day, and time).

True / False

In Oracle, the EXTRACT function can be used to retrieve a specific part of a date, such as the year, month, or day.

True False

The EXTRACT function retrieves a specific component (e.g., year, month, day) from a date.

True / False

The TO_DATE function in Oracle converts a string to a date, using a specified date format.

True False

The TO_DATE function converts a string to a date based on the provided date format.

Q10

True / False

The Oracle Certified Professional (OCP) exam includes knowledge on using date functions effectively, understanding their syntax, and optimizing their performance in SQL queries.

True False

The OCP certification covers advanced topics, including the effective use of date functions, understanding their syntax, and optimizing their performance in SQL queries.

Q11

Single Choice

Which Oracle SQL function is used to return the current date and time?

SYSDATE CURRENT_DATE NOWTODAY

The SYSDATE function in Oracle returns the current date and time of the database server.

Q12

Single Choice

What will be the result of the following Oracle SQL expression?

SQL Code

SELECT TO_CHAR(SYSDATE, 'YYYY-MM-DD') FROM dual;

The current date in YYYY-MM-DD format The current time in HH:MI:SS format The current date in MM-DD-YYYY formatAn error, as TO_CHAR cannot be used with SYSDATE

The TO_CHAR function formats the SYSDATE into the specified date format YYYY-MM-DD

Q13

Single Choice

Which Oracle SQL function can be used to add 7 days to the current date?

ADD_DATE DATE_ADD SYSDATE + 7DATE_PLUS

In Oracle SQL, adding an integer to SYSDATE adds that many days to the current date.

Q14

Single Choice

Consider the following Oracle SQL query:What does this query return?

SQL Code

SELECT TRUNC(SYSDATE, 'MM') FROM dual;

The first day of the current month The first day of the current year The current date without timeThe last day of the current month

The TRUNC(SYSDATE, 'MM') function truncates the date to the first day of the current month.

Q15

Single Choice

Which Oracle SQL function is used to extract the year from a date?

YEAR() TO_YEAR() EXTRACT(YEAR FROM date)GET_YEAR()

The EXTRACT function is used in Oracle to retrieve specific components (like YEAR) from a date.

Q16

Single Choice

Given the Oracle SQL query:What will be the result?

SQL Code

SELECT MONTHS_BETWEEN('01-SEP-2024', '01-JAN-2024') FROM dual;

8 -8 79

The MONTHS_BETWEEN function calculates the number of months between two dates, returning a positive value if the first date is later

Q17

Single Choice

What will be the result of the following Oracle SQL query?

SQL Code

SELECT NEXT_DAY(SYSDATE, 'MONDAY') FROM dual;

The date of the next Monday after today The date of the previous Monday The date of todayAn error, as NEXT_DAY cannot be used with SYSDATE

The NEXT_DAY function returns the date of the first occurrence of the specified weekday after the given date.

Q18

Single Choice

Consider the following Oracle SQL query:What does this query return?

SQL Code

SELECT ADD_MONTHS('01-JAN-2024', 6) FROM dual;

01-JUN-2024 01-JUL-2024 01-JAN-202501-DEC-2023

The ADD_MONTHS function adds the specified number of months (6 in this case) to the given date, resulting in 01-JUL-2024.

Q19

Single Choice

Which Oracle SQL function can be used to find the last day of the current month?

TRUNC LAST_DAY END_OF_MONTHSYSDATE

The LAST_DAY function returns the last day of the month for a given date.

Q20

Single Choice

What is the result of the following Oracle SQL query?

SQL Code

SELECT ROUND(TO_DATE('15-MAR-2024'), 'YEAR') FROM dual;

01-JAN-2024 01-JUL-2024 01-JAN-202515-MAR-2024

The ROUND function with the YEAR format rounds the date to the nearest year, and since 15-MAR-2024 is closer to the beginning of the year than to the end, it rounds down to 01-JAN-2024.

Q21

Multiple Choice

Which SQL code snippet uses the `SYSDATE` function to retrieve the current date and time in Oracle?

SQL Code

SELECT SYSDATE FROM dual;

SELECT CURRENT_DATE FROM dual;

SELECT SYSDATE FROM dual;

SELECT SYSDATE FROM dual; SELECT SYSDATE FROM dual; SELECT SYSDATE FROM dual;SELECT CURRENT_DATE FROM dual;

Options A, B, and C correctly demonstrate the use of the `SYSDATE` function to retrieve the current date and time. Option D is incorrect because it uses the `CURRENT_DATE` function instead of `SYSDATE`.

Q22

Multiple Choice

Which SQL code snippet uses the `TO_DATE` function to convert a string into a date format 'YYYY-MM-DD' in Oracle?

SQL Code

SELECT TO_DATE('2024-08-22', 'YYYY-MM-DD') AS converted_date FROM dual;

SELECT TO_DATE('22-AUG-2024', 'DD-MON-YYYY') AS converted_date FROM dual;

SELECT TO_DATE('2024-08-22', 'YYYY-MM-DD') AS converted_date FROM dual;

SELECT TO_DATE('2024-08-22', 'YYYY-MM-DD') AS converted_date FROM dual; SELECT TO_DATE('2024-08-22', 'YYYY-MM-DD') AS converted_date FROM dual; SELECT TO_DATE('2024-08-22', 'YYYY-MM-DD') AS converted_date FROM dual;SELECT TO_DATE('22-AUG-2024', 'DD-MON-YYYY') AS converted_date FROM dual;

Options A, B, and C correctly demonstrate the use of the `TO_DATE` function to convert a string into the date format 'YYYY-MM-DD'. Option D is incorrect because it uses a different date format.

Q23

Multiple Choice

Which SQL code snippet uses the `ADD_MONTHS` function to add 6 months to a date in Oracle?

SQL Code

SELECT ADD_MONTHS(SYSDATE, 6) AS future_date FROM dual;

SELECT ADD_MONTHS(SYSDATE, 6) AS future_date FROM dual;

SELECT ADD_MONTHS(SYSDATE, 6) AS future_date FROM dual;

SELECT ADD_MONTHS(SYSDATE, 6) AS future_date FROM dual; SELECT ADD_MONTHS(SYSDATE, 6) AS future_date FROM dual; SELECT ADD_MONTHS(SYSDATE, 6) AS future_date FROM dual;SELECT SYSDATE + 180 AS future_date FROM dual;

Options A, B, and C correctly demonstrate the use of the `ADD_MONTHS` function to add 6 months to the current date. Option D is incorrect because it does not use the `ADD_MONTHS` function.

Q24

Multiple Choice

Which SQL code snippet uses the `LAST_DAY` function to find the last day of the current month in Oracle?

SQL Code

SELECT LAST_DAY(SYSDATE) AS last_day_of_month FROM dual;

SELECT LAST_DAY(SYSDATE) AS last_day_of_month FROM dual;

SELECT LAST_DAY(SYSDATE) AS last_day_of_month FROM dual;

SELECT LAST_DAY(SYSDATE) AS last_day_of_month FROM dual; SELECT LAST_DAY(SYSDATE) AS last_day_of_month FROM dual; SELECT LAST_DAY(SYSDATE) AS last_day_of_month FROM dual;SELECT TRUNC(SYSDATE, 'MONTH') + INTERVAL '1' MONTH - INTERVAL '1' DAY AS last_day_of_month FROM dual;

Options A, B, and C correctly demonstrate the use of the `LAST_DAY` function to find the last day of the current month. Option D is incorrect because it does not use the `LAST_DAY` function.

Q25

Multiple Choice

Which SQL code snippet uses the `NEXT_DAY` function to find the date of the next Friday in Oracle?

SQL Code

SELECT NEXT_DAY(SYSDATE, 'FRIDAY') AS next_friday FROM dual;

SELECT NEXT_DAY(SYSDATE, 'FRIDAY') AS next_friday FROM dual;

SELECT NEXT_DAY(SYSDATE, 'FRIDAY') AS next_friday FROM dual;

SELECT NEXT_DAY(SYSDATE, 'FRIDAY') AS next_friday FROM dual; SELECT NEXT_DAY(SYSDATE, 'FRIDAY') AS next_friday FROM dual; SELECT NEXT_DAY(SYSDATE, 'FRIDAY') AS next_friday FROM dual;SELECT SYSDATE + (7 - TO_CHAR(SYSDATE, 'D') + 5) AS next_friday FROM dual;

Options A, B, and C correctly demonstrate the use of the `NEXT_DAY` function to find the date of the next Friday. Option D is incorrect because it does not use the `NEXT_DAY` function.

Q26

Multiple Choice

Which SQL code snippet demonstrates advanced use of the `TRUNC` function to truncate the current date to the start of the year in Oracle?

SQL Code

SELECT TRUNC(SYSDATE, 'YEAR') AS start_of_year FROM dual;

SELECT TRUNC(SYSDATE, 'YEAR') AS start_of_year FROM dual;

SELECT TRUNC(SYSDATE, 'YEAR') AS start_of_year FROM dual;

SELECT TRUNC(SYSDATE, 'YEAR') AS start_of_year FROM dual; SELECT TRUNC(SYSDATE, 'YEAR') AS start_of_year FROM dual; SELECT TRUNC(SYSDATE, 'YEAR') AS start_of_year FROM dual;SELECT TO_DATE('01-JAN-' || TO_CHAR(SYSDATE, 'YYYY'), 'DD-MON-YYYY') AS start_of_year FROM dual;

Options A, B, and C correctly demonstrate advanced use of the `TRUNC` function to truncate the current date to the start of the year. Option D is incorrect because it does not use the `TRUNC` function.

Q27

Multiple Choice

Which SQL code snippet demonstrates advanced use of the `MONTHS_BETWEEN` function to calculate the number of months between two dates in Oracle?

SQL Code

SELECT MONTHS_BETWEEN(TO_DATE('2024-12-31', 'YYYY-MM-DD'), SYSDATE) AS months_diff FROM dual;

SELECT MONTHS_BETWEEN(TO_DATE('2024-12-31', 'YYYY-MM-DD'), SYSDATE) AS months_diff FROM dual;

SELECT MONTHS_BETWEEN(TO_DATE('2024-12-31', 'YYYY-MM-DD'), SYSDATE) AS months_diff FROM dual;

SELECT MONTHS_BETWEEN(TO_DATE('2024-12-31', 'YYYY-MM-DD'), SYSDATE) AS months_diff FROM dual; SELECT MONTHS_BETWEEN(TO_DATE('2024-12-31', 'YYYY-MM-DD'), SYSDATE) AS months_diff FROM dual; SELECT MONTHS_BETWEEN(TO_DATE('2024-12-31', 'YYYY-MM-DD'), SYSDATE) AS months_diff FROM dual;SELECT (TO_DATE('2024-12-31', 'YYYY-MM-DD') - SYSDATE) / 30 AS months_diff FROM dual;

Options A, B, and C correctly demonstrate advanced use of the `MONTHS_BETWEEN` function to calculate the number of months between two dates. Option D is incorrect because it does not use the `MONTHS_BETWEEN` function.

Q28

Multiple Choice

Which SQL code snippet demonstrates certification-level use of the `EXTRACT` function to extract the year from a date column in Oracle?

SQL Code

SELECT EXTRACT(YEAR FROM hire_date) AS hire_year
FROM employees;

SELECT EXTRACT(YEAR FROM hire_date) AS hire_year
FROM employees;

SELECT EXTRACT(YEAR FROM hire_date) AS hire_year
FROM employees;

SELECT EXTRACT(YEAR FROM hire_date) AS hire_year FROM employees; SELECT EXTRACT(YEAR FROM hire_date) AS hire_year FROM employees; SELECT EXTRACT(YEAR FROM hire_date) AS hire_year FROM employees;SELECT TO_CHAR(hire_date, 'YYYY') AS hire_year FROM employees;

Options A, B, and C correctly demonstrate certification-level use of the `EXTRACT` function to extract the year from a date column. Option D is incorrect because it does not use the `EXTRACT` function.

Q29

Multiple Choice

Which SQL code snippet demonstrates certification-level use of the `TO_CHAR` function to format a date as 'Month DD, YYYY' in Oracle?

SQL Code

SELECT TO_CHAR(SYSDATE, 'Month DD, YYYY') AS formatted_date FROM dual;

SELECT TO_CHAR(SYSDATE, 'Month DD, YYYY') AS formatted_date FROM dual;

SELECT TO_CHAR(SYSDATE, 'Month DD, YYYY') AS formatted_date FROM dual;

SELECT TO_CHAR(SYSDATE, 'Month DD, YYYY') AS formatted_date FROM dual; SELECT TO_CHAR(SYSDATE, 'Month DD, YYYY') AS formatted_date FROM dual; SELECT TO_CHAR(SYSDATE, 'Month DD, YYYY') AS formatted_date FROM dual;SELECT TO_CHAR(SYSDATE, 'MM-DD-YYYY') AS formatted_date FROM dual;

Options A, B, and C correctly demonstrate certification-level use of the `TO_CHAR` function to format a date as 'Month DD, YYYY'. Option D is incorrect because it does not use the correct format.

Q30

Multiple Choice

Which SQL code snippet demonstrates certification-level use of the `NEW_TIME` function to convert a date from GMT to PST in Oracle?

SQL Code

SELECT NEW_TIME(SYSDATE, 'GMT', 'PST') AS pst_time FROM dual;

SELECT NEW_TIME(SYSDATE, 'GMT', 'PST') AS pst_time FROM dual;

SELECT NEW_TIME(SYSDATE, 'GMT', 'PST') AS pst_time FROM dual;

SELECT NEW_TIME(SYSDATE, 'GMT', 'PST') AS pst_time FROM dual; SELECT NEW_TIME(SYSDATE, 'GMT', 'PST') AS pst_time FROM dual; SELECT NEW_TIME(SYSDATE, 'GMT', 'PST') AS pst_time FROM dual;SELECT SYSDATE + INTERVAL '-8' HOUR AS pst_time FROM dual;

Options A, B, and C correctly demonstrate certification-level use of the `NEW_TIME` function to convert a date from GMT to PST. Option D is incorrect because it does not use the `NEW_TIME` function.

Oracle Database Quiz Questions