Exam 70-762 topic 1 question 138 discussion

Actual exam question from Microsoft's 70-762

Question #: 138
Topic #: 1

Note: This question is part of a series of questions that use the same or similar answer choices. As answer choice may be correct for more than one question in the series. Each question is independent of the other questions in this series.
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You have a Microsoft SQL Server database named DB1 that contains the following tables:

Users frequently run the following query:

Users report that the query takes a long time to return results.
You need to minimize the amount of time requires for the query to return data.
What should you do?

A. Create clustered indexes on TBL1 and TBL2.
B. Create a clustered index on TBL1.Create a nonclustered index on TBL2 and add the most frequently queried column as included columns.
C. Create a nonclustered index on TBL2 only.
D. Create UNIQUE constraints on both TBL1 and TBL2. Create a partitioned view that combines columns from TBL1 and TBL2.
E. Drop existing indexes on TBL1 and then create a clustered columnstore index. Create a nonclustered columnstore index on TBL1.Create a nonclustered index on TBL2.
F. Drop existing indexes on TBL1 and then create a clustered columnstore index. Create a nonclustered columnstore index on TBL1.Make no changes to TBL2.
G. Create CHECK constraints on both TBL1 and TBL2. Create a partitioned view that combines columns from TBL1 and TBL2.
H. Create an indexed view that combines columns from TBL1 and TBL2.

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Suggested Answer: H 🗳️

by iYoung at April 12, 2020, 5:08 a.m.

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MML

Highly Voted 4 years, 11 months ago

H is correct

upvoted 9 times

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Alex5x

Most Recent 4 years, 8 months ago

H is correct only if column3, 4 and 5 are not nullable. From Microsoft (https://docs.microsoft.com/en-us/sql/relational-databases/views/create-indexed-views?view=sql-server-ver15) The SELECT statement in the view definition must not contain the following Transact-SQL element: SUM function that references a nullable expression. Unfortunately, the question says nothing about nullability of those columns.

upvoted 2 times

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