1z0-071 Oracle Database 12c SQL 第39题 single quotation mark单引号

Q39.  Evaluate the following SQL statement:
SELECT product_name || ‘it’s not available for order’
FROM product_information
WHERE product_status = ‘obsolete’;
You received the following error while executing the above query:
ERROR
ORA-01756: quoted string not properly terminated
What would you do to execute the query successfully?
A. Enclose the literal character string in the SELECT clause within the double quotation marks.
B. Do not enclose the character literal string in the SELECT clause within the single quotation marks.
C. Use Quote (q) operator and delimiter to allow the use of single quotation mark in the literal character string.

D. Use escape character to negate the single quotation mark inside the literal character string in the SELECT clause.

Correct Answer: C
Explanation/Reference:
References:
http://docs.oracle.com/cd/B19306_01/server.102/b14200/sql_elements003.htm

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