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?

You develop a Microsoft SQL Server 2012 database that contains a heap named OrdersHistoncal.
You write the following Transact-SQL query:
INSERT INTO OrdersHistorical
SELECT * FROM CompletedOrders
You need to optimize transaction logging and locking for the statement.
Which table hint 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 use Microsoft SQL Server 2012 to develop a database application. You need to create an object that meets the following requirements:
Takes an input variable
Returns a table of values
Cannot be referenced within a view

Which object should you use?

You are a database developer for an application hosted on a Microsoft SQL Server 2012 server. The database contains two tables that have the following
definitions:

Global customers place orders from several countries. You need to view the country from which each customer has placed the most orders.
Which Transact-SQL query do you use?

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?

You use Microsoft SQL Server 2012 to develop a database application. You need to implement a computed column that references a lookup table by using an
INNER JOIN against another table.
What should you do?

You administer a Microsoft SQL Server 2012 database named ContosoDb. Tables are defined as shown in the exhibit. (Click the Exhibit button.)

You need to display rows from the Orders table for the Customers row having the CustomerId value set to 1 in the following XML format.

Which Transact-SQL query should you use?

You administer a Microsoft SQL Server 2012 database named ContosoDb. Tables are defined as shown in the exhibit. (Click the Exhibit button.)

You need to display rows from the Orders table for the Customers row having the CustomerId value set to 1 in the following XML format.

Which Transact-SQL query 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?