Which of these appropriately describes the results of a manual SQL Tuning Advisor task?
A. A list of SQL statements and recommendations for tuning
B. A list of SQL statements that have been tuned by the Advisor, with before and after metrics
C. Graphs showing the actual performance improvement made by the Advisor after it implemented the recommended changes
D. All of the above
Option B is incorrect because the manual SQL Tuning Advisor task does not tune the SQL statements.C is incorrect for the same reason.
原文：http://www.cnblogs.com/Babylon/p/7831367.html