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Which two statements are true regarding the ORDER BY clause? （）
A:The sort is in ascending by order by default.
B:The sort is in descending order by default.
C:The ORDER BY clause must precede the WHERE clause.
D:The ORDER BY clause is executed on the client side.
E:The ORDER BY clause comes last in the SELECT statement.
F:The ORDER BY clause is executed first in the query execution.

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出自：Oracle认证

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