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Home >> Interview Question >> Sql Server >> Post New Question Subscribe to Interview Questions

How do you display only few # of rows from any table?

Posted By :Narayanan     Posted Date :October 31, 2011    Points :40   Category :Sql Server 
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You can also find related Interview Question to How do you display only few # of rows from any table?  below: 

How many ways return rows from one table not in another table?

  
There are at least 5 ways to return data from one table which is not in another table. Two of these are SQL Server 2005 and greater only

1)NOT IN

2)NOT EXISTS

3)LEFT and RIGHT JOIN

4)OUTER APPLY (2005+)

5)EXCEPT (2005+)

(More...)

Deleting Duplicates rows from the table?

  
delete from Employee where(EmpId Not In(Select Max(EmpId) from Employee Group By EmpName
-------------------------------
Note: EmpId Should Be identity column means Autogenerated column (More...)

How to delete duplicate rows from table in sql

  
One can achieve this like below-

DELETE FROM table_name A WHERE ROWID > (
SELECT min(rowid) FROM table_name B
WHERE A.key_values = B.key_values); (More...)

What are the privileges that can be granted on a table by a user to others?

  
Insert, update, delete, select, references, index, execute, alter, all (More...)

What command is used to create a table by copying the structure of another table?

  
CREATE TABLE .. AS SELECT command

Explanation :

To copy only the structure, the WHERE clause of the SELECT command should contain a FALSE statement as in the following.
CREATE TABLE NEWTABLE AS SELECT * FROM EXISTINGTABLE WHERE 1=2;
If the WHERE condition is true, then all the rows or rows satisfying the condition will be copied to the new table. (More...)

How to clear all rows of the GridView?

  
make DataSource as null.

GridView1.DataSource = null; (More...)

Which property on a Combo Box do you set with a column name, prior to setting the Data Source, to display data in the combo box?

  
ComboBox.DataValueField = "ColumnName"

When we use Databind method for the Combo box we set Display Member and Display Value property to column name. (More...)

How to get a row was inserted most recently in a table?

  
select top 1 * from tablename order by ColumnName desc (More...)

You are working with a DataSet and want to be able to display data, sorted different ways. How do you do so?

  
Select the correct answer.

1. Use the Sort method on the DataTable object.
2. Use the DataSet object's Sort method.
3. Use a DataView object for each sort.
4. Create a DataTable for each sort, using the DataTable object's Copy method, and then Sort the result


Correct Answer is :
3. Use a DataView object for each sort. (More...)

How To Update Description Value for a Column in Table using SQL Command?

  
We can Update Description to Column using sp_updateextendedproperty System Store Procedure.
Sample Command to Update Description for Column in a Table:

EXEC sys.sp_updateextendedproperty @name=N'MS_Description', @value=N'My Description for Column Here' , @level0type=N'SCHEMA',@level0name=N'dbo', @level1type=N'TABLE',@level1name=N'MyTableName', @level2type=N'COLUMN',@level2name=N'ColumnName' (More...)

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