Which two queries return the string Hello! we're ready?
A.
SELECT q'! Hello! We're ready! 'FROM DUAL;
B.
SELECT "Hello! We're ready "FROM |DUAL;
C.
SELECT q'[Hello! We're ready]'FROM DUAL;
D.
SELECT 'Hello! we\ re ready' ESCAPE'N'FROMDUAL:
E.
SELECT 'Hello! We're ready' FROM DUAL;
The Answer Is:
A, C
This question includes an explanation.
Explanation:
In Oracle SQL, the q quote operator can be used to define string literals that contain single quotes or other special characters without needing to escape them. The queries using the q quote mechanism, like in options A and C, will successfully return the string as it is, including single quotes within the string.
A: Correct, it uses the q quote operator with the exclamation mark ! as the delimiter, which allows the string to contain single quotes.
B: Incorrect, double quotes " in Oracle SQL are used for identifiers such as column names, not string literals.
C: Correct, this also uses the q quote operator, with the square brackets [] as the delimiters.
D: Incorrect, the backslash \ is not used as an escape character in Oracle SQL string literals, and the ESCAPE keyword is used incorrectly here.
E: Incorrect, this does not account for the single quote within the string, which would terminate the string literal prematurely, and it lacks the q quote operator or proper escape mechanism.
1z0-071 PDF/Engine
Printable Format
Value of Money
100% Pass Assurance
Verified Answers
Researched by Industry Experts
Based on Real Exams Scenarios
100% Real Questions
Get 60% Discount on All Products,
Use Coupon: "8w52ceb345"