Evaluate these two SQL statements: SELECT last_name, salary, hire_date FROM EMPLOYEES

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D.    There is no need to specify DESC because the results are sorted in descending order by default.

Question ID 1731	Which four statements correctly describe functions that are available in SQL? (Choose four.)
Option A	A.    TRUNCATE rounds the column, expression, or value to n decimal places.
Option B	B.    TRIM trims the heading or trailing characters (or both) from a character string.
Option C	C.    DECODE translates an expression after comparing it to each search value.

Option D

D.    INSTR returns the numeric position of a named character.
 

Option E

E.    NVL compares two expressions and returns null if they are equal, or the first expression if they are not equal.
 

Option F

F.    NULLIF compares two expressions and returns null if they are equal, or the first expression if they are not equal.

Correct Answer B,C,D,FDescription
Update Date and Time 2015-12-02 11:57:06

The two statements produce identical results

The second statement returns an error

There is no need to specify DESC because the results are sorted in descending order by default

None of the above 

Answer:
The two statements produce identical results

Note: This Question is unanswered, help us to find answer for this one

The two statements produce identical results.

The second statement returns an error.

There is no need to specify DESC because the results are sorted in descending order by default.

Answer:

The two statements produce identical results.

Note: This Question is unanswered, help us to find answer for this one

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;

1. The two statements produce identical results.

2. The second statement returns a syntax error.

3. There is no need to specify DESC because the results are sorted in descending order by default.

4. The two statements can be made to produce identical results by adding a column alias for the salary column in the second SQL statement.

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