70-761 Exam Dumps | You have a disk-based table that contains 15 columns. You query the table for the number of new rows

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Question 40/112

You have a disk-based table that contains 15 columns.
You query the table for the number of new rows created during the current day.
You need to create an index for the query. The solution must generate the smallest possible index.
Which type of index should you create?

A. clustered

B. filtered nonclustered with a getdate() predicate in the WHERE statement clause

C. hash

D. nonclustered with compression enabled

Correct Answer: B

Explanation/Reference:
Explanation:
A filtered index is an optimized nonclustered index especially suited to cover queries that select from a well-defined subset of data. It uses a filter predicate to index a portion of rows in the table. A well-designed filtered index can improve query performance as well as reduce index maintenance and storage costs compared with full-table indexes.
Creating a filtered index can reduce disk storage for nonclustered indexes when a full-table index is not necessary.
References: https://docs.microsoft.com/en-us/sql/relational-databases/indexes/create-filtered-indexes

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