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Category: 70-765 (v.1)

Exam 70-765: Provisioning SQL Databases (update July 12th, 2017)

Which Transact-SQL query should you use?

Your database contains a table named Purchases. The table includes a DATETIME column named
PurchaseTime that stores the date and time each purchase is made. There is a non- clustered index on the
PurchaseTime column. The business team wants a report that displays the total number of purchases made on
the current day. You need to write a query that will return the correct results in the most efficient manner.
Which Transact-SQL query should you use?

Which Transact-SQL statement should you use?

You administer a SQL Server 2012 server that contains a database named SalesDb. SalesDb contains a
schema named Customers that has a table named Regions. A user named UserA is a member of a role named
Sales. UserA is granted the Select permission on the Regions table. The Sales role is granted the Select
permission on the Customers schema.
You need to ensure that the following requirements are met:
The Sales role does not have the Select permission on the Customers schema. UserA has the Select
permission on the Regions table.
Which Transact-SQL statement should you use?

You need to improve the performance of the query

You use a Microsoft SQL Server 2012 database that contains two tables named SalesOrderHeader and
SalesOrderDetail. The indexes on the tables are as shown in the exhibit.
(Click the Exhibit button.)

You write the following Transact-SQL query:

You discover that the performance of the query is slow. Analysis of the query plan shows table scans where the
estimated rows do not match the actual rows for SalesOrderHeader by using an unexpected index on
SalesOrderDetail.
You need to improve the performance of the query.
What should you do?

Which Transact- SQL statement should you use?

You are a database developer of a Microsoft SQL Server 2012 database. You are designing a table that will
store Customer data from different sources. The table will include a column that contains the CustomerID from
the source system and a column that contains the SourceID. A sample of this data is as shown in the following
table.

You need to ensure that the table has no duplicate CustomerID within a SourceID. You also need to ensure that
the data in the table is in the order of SourceID and then CustomerID. Which Transact- SQL statement should
you use?


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