Microsoft
70-466 · Question #28
70-466 Question #28: Real Exam Question with Answer & Explanation
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Configure and maintain an analysis services database
Question
You execute the following code: CREATE TABLE dbo.Customers ( id int PRIMARY KEY, CustomerName char(10) ) You create a nonclustered index named IX_CustomerName on the CustomerName column. You execute the following query: SELECT * FROM dbo.Customers WHERE LEFT(CustomerName,1) = 'a' You need to reduce the amount of time it takes to execute the query. What should you do?
Options
- AReplace LEFT(CustomerName,1) = 'a' with CustomerName LIKE 'a%'.
- BPartition the table and use the CustomerName column for the partition scheme.
- CReplace LEFT(CustomerName,1) = 'a' with SUBSTRING(CustomerName,1,1) = 'a'.
- DReplace IX_CustomerName with a clustered index.
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Topics
#query optimization#nonclustered index#LIKE operator#T-SQL