Final answer:
The WITH clause in T-SQL does not allow an OPENROWSET query to specify the datatype of an underlying column.
The correct option is B.
Step-by-step explanation:
In T-SQL, the WITH clause does not allow an OPENROWSET query to specify the datatype of an underlying column. The WITH clause is used to define a common table expression (CTE) which is a temporary result set that can be referenced in a subsequent query. It does not have any direct impact on the datatype of a column within the OPENROWSET query.
For example, consider the following query:
WITH CTE AS (
SELECT * FROM OPENROWSET('SQLOLEDB', 'Server=(local);Trusted_Connection=yes;Driver={SQL Server};', 'SELECT * FROM SomeTable')
)
SELECT * FROM CTE;
In this query, the WITH clause is used to define the CTE named CTE, which retrieves data from a table using the OPENROWSET function. The datatype of the columns in the resulting CTE depends on the underlying table's column datatypes, not on the WITH clause.