Oracle
1Z0-007 · Question #175
Evaluate these two SQL statements: SELECT last_name, salary , hire_date FROM EMPLOYEES ORDER BY salary DESC; SELECT last_name, salary, hire_date FROM EMPLOYEES ORDER BY 2 DESC; What is true about them
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Restricting and Sorting Data
Question
Evaluate these two SQL statements:
SELECT last_name, salary , hire_date FROM EMPLOYEES ORDER BY salary DESC; SELECT last_name, salary, hire_date FROM EMPLOYEES ORDER BY 2 DESC; What is true about them?
Options
- AThe two statements produce identical results.
- BThe second statement returns a syntax error.
- CThere is no need to specify DESC because the results are sorted in descending order by default.
- DThe two statements can be made to produce identical results by adding a column alias for the salary
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Topics
#ORDER BY#column position alias#sort order#DESC