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When Grouping is added to the query NULL values in the grouped colimn are included in the Result Set?

Posted By :Syed Shakeer Hussain     Posted Date :November 29, 2009    Points :10   Category :Sql Server 

You can also find related Interview Question to When Grouping is added to the query NULL values in the grouped colimn are included in the Result Set? 1)YES 2)NO  below: 

Can you control concatenation of string values with null values?

Concatenation of string values with null values results either null value or string value.
We can control that by setting CONCAT_NULL_YIELDS_NULL on or off.
When it is set to ON, the concatenation will result null and when it is set to OFF, it will result the string.
Setting it ON,
print 'testing' + NULL; --results NULL and prints nothing

Setting it OFF,

print 'testing' + NULL; -- results testing and prints the same (More...)

Will COUNT(column) include columns with null values in its count?

Yes, COUNT(column) include columns with null values in its count? (More...)

What is the difference between NULL AND VOID pointer?

NULL can be value for pointer type variables.
VOID is a type identifier which has not size.
NULL and void are not same. Example: void* ptr = NULL; (More...)

What is a Null object?

It is an object of some class whose purpose is to indicate that a real object of that class does not exist. One common use for a null object is a return value from a member function that is supposed to return an object with some specified properties but cannot find such an object. (More...)

What is Query evaluation engine?

It executes low-level instruction generated by compiler. (More...)

What is Query binding ?

The binding of an object to a query (More...)

To perform asynchronous data access, what must be added to the connection string?

Select Correct Answer.

1. BeginExecute=true
2. MultiThreaded=true
3. MultipleActiveResultSets=true
4. Asynchronous=true

Correct Answer:
4. Asynchronous=true (More...)

List the event handlers that can be included in Global.asax?

o Application start and end event handlers
o Session start and end event handlers
o Per-request event handlers
o Non-deterministic event handlers (More...)

What is NOT NULL Constraint?

A NOT NULL Constraint enforces that the column will not accept NULL values.The NOT NULL constraint are used to enforce domain integrity as the check constraint. (More...)

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