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Exam 70-762 topic 1 question 92 discussion

Actual exam question from Microsoft's 70-762
Question #: 92
Topic #: 1
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Note: This question is part of a series of questions that present the same scenario. Each question in the series contains a unique solution. Determine whether the solution meets the stated goals.
You have a table that has a clustered index and a nonclustered index. The indexes use different columns from the table. You have a query named Query1 that uses the nonclustered index.
Users report that Query1 takes a long time to report results. You run Query1 and review the following statistics for an index seek operation:

You need to resolve the performance issue.
Solution: You drop the nonclustered index.
Does the solution meet the goal?

  • A. Yes
  • B. No
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Suggested Answer: B 🗳️
We see Actual Number of Row is 3571454, while Estimated Number of Rows is 0.
This indicates that the statistics are old, and need to be updated.

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databasejamdown
Highly Voted 4 years, 8 months ago
The statistics are out of date it seems. Dropping the index wont help. More than likely the statistics for the clustered index will also be out of date.
upvoted 9 times
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