Monday, March 29, 2010

Which is true?

Which statement about SQL is true?

A. Null values are displayed last in the ascending sequences.
B. Data values are displayed in descending order by default.
C. You cannot specify a column alias in an ORDER BY clause.
D. You cannot sort query results by a column that is not included in the SELECT list.
E. The results are sorted by the first column in the SELECT list, if the ORDER BY
clause is not provided.

Answer:[A]
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