Which three are true about the SQL Tuning Advisor? (Choose three.)
A.It checks each query being analyzed for stale statistics. B.It checks each query being analyzed for missing statistics. C.It only recommends syntactic changes to SQL statements. D.It can recommend semantic changes to SQL statements. E.It considers all SQL statements being analyzed by the advisor task as a group. F.It builds SQL profiles for each poorly performing SQL statement to prevent正确答案ABD
Regressions.
