1z0-071 Exam Dumps | Which two statements execute successfully?

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Question 78/139

Which two statements execute successfully?

A. SELECT TO_ DATE('2019-DEC-25 15:30' 'YYYY-MON-DD HH24:MI', 'NLS_ DATE_ LANGUAGE
=AMERICAN' ) FROM DUAL;

B. SELECT TO_CHAR('2019-DEC-25 15:30" YY-MON-D HH24:M2', 'NLS_DATE LANGUAGE = AMERICAN') FROM DUAL;

C. SELECT TO _DATE (TO_ CHAR ('2019-DEC-25 03:30', 'YYYY-MON-DD HH12:MI')) FROM DUAL;

D. SELECT TO _ CHAR (TO_ DATE ('2019-DEC-25 03:30','YYYY-MON-DD HH12:MI')) FROM DUAL

E. SELECT TO _ CHAR ('2019-DEC-25 15:30'.'YYYY-MON-DD HH24:MI')
FROM DUAL

Correct Answer: A,D

* A: This statement is correct. It uses the TO_DATE function with a proper date string, format mask, and
* NLS_DATE_LANGUAGE setting.
* B: This statement will not execute successfully because the syntax of the TO_CHAR function is incorrect. The date string should be a DATE data type when used with TO_CHAR, and the format mask and NLS parameter are incorrectly specified.
* C: This statement will not execute successfully because it is redundant to use TO_CHAR and then immediately convert it back to a date with TO_DATE without specifying a proper format mask.
* D: This statement is correct. It converts a string to a DATE using TO_DATE and then back to a string with TO_CHAR, without specifying a format which defaults to the session's NLS_DATE_FORMAT.
* E: This statement will not execute successfully because TO_CHAR is used incorrectly; the first argument must be of DATE data type when you're using a date format mask.
References for the TO_DATE and TO_CHAR functions and their proper usage can be found in the Oracle Database SQL Language Reference 12c documentation.

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