今天有一个dba问我关于索引重建是否需要更新统计信息的问题，其实这个问题有点儿经验的dba都会冒出，真正的答案的是不需要更新，包括创建索引.
具体见以下sql reference的说明：
COMPUTE STATISTICS Clause
This clause has been deprecated. Oracle Database now automatically collects statistics during index creation and rebuild. This clause is supported for backward compatibility and will not cause errors.
