會引起排序的sql語句型別！

閒的無聊，看看9i 的效能最佳化ocp考試題，題中提到了的一點內容，記得在doc上也看到過，不過從10g開始，group by不一定會排序。[@more@]The types of SQL statements that can cause database sorts to occur include the following: ORDER BY,
GROUP BY, SELECT DISTINCT, UNION, INTERSECT, MINUS, ANALYZE, CREATE INDEX, joins
between tables on columns that are not indexed.