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052-40

时间:2017-12-05 17:19:31      阅读:211      评论:0      收藏:0      [点我收藏+]

You have statistics collected for some selected tables. Your requirement is that the statistics for the tables
and all dependent indexes must not be overwritten by further statistics collection until a certain point of time.
How would you achieve this?
A. Lock statistics for the tables.
B. Change STALE_PERCENT to zero for the tables.
C. Set the TIMED_STATISTICS parameter to TRUE.
D. Set the STATISTICS_LEVEL parameter to BASIC.
E. Set the OPTIMIZER_USE_PENDING parameter statistics to TRUE.

可以直接锁定统计信息。

052-40

原文:http://www.cnblogs.com/Babylon/p/7988028.html

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