Q
How do you create a column alias containing a space?
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A
SELECT salary 'Monthly Salary' FROM emp;
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B
SELECT salary "Monthly Salary" FROM emp;
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C
SELECT salary AS Monthly Salary FROM emp;
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D
SELECT salary = Monthly Salary FROM emp;
Correct Answer:
B. SELECT salary "Monthly Salary" FROM emp;
Explanation:
Aliases with spaces or mixed case need double quotes. Single quotes are for string literals.