SELECT statement for retrieving database value

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VS2010

Hello, i need to know how to retrieve only the second row value from the database table.

for example, to retrieve the first row, i used:

SELECT TOP(1) FROM tablename;

but how do i retrieve the second row? i tried using the "SELECT TOP(2) FROM tablename" but it return me the first and second row.

but i only want the second row data. how can i achieve this?

Posted 28-Jun-13 8:11am

Jerrell77

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Zoltán Zörgő 28-Jun-13 14:14pm

What is the ordering? You should have since the rows in a table are by definition not ordered, thus "first" and "second" have no standard meaning without order.

2 solutions

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Maciej Los · Answer 1 · 2013-06-28T08:22:00

Solution 1

Try this:

SQL

SELECT TOP(1) T.*
FROM (
    SELECT TOP(2)
    FROM tablename
    ORDER BY ID DESC 
) AS T

or

SQL

SELECT T.*
FROM (
    SELECT *, ROW_NUMBER() OVER(ORDER BY ID) AS RowNo
    FROM tablename
) AS T
WHERE RowNo = 2

Posted 28-Jun-13 8:22am

Maciej Los

Comments

Jerrell77 29-Jun-13 11:51am

any idea why i can run the codes in the Query builder but they show me the error "the dataset in the objectdatasource does not contain any tables" when i place the codes in the DAL?

Maciej Los 30-Jun-13 4:23am

Without code - NO!
Please, post new question and share your code.

OriginalGriff · Answer 2 · 2013-06-28T08:22:00

Solution 2

SQL does not have to return rows in any particular order, so you have to specify an ordering if you want to fetch any specific row. However, when you have done that, try this:

SQL

WITH myTableWithRows AS (
     SELECT (ROW_NUMBER() OVER (ORDER BY myTable.SomeField)) as row,*
     FROM myTable)
SELECT * FROM myTableWithRows WHERE row = 2

Posted 28-Jun-13 8:22am

OriginalGriff

Comments

Jerrell77 29-Jun-13 11:51am

any idea why i can run the codes in the Query builder but they show me the error "the dataset in the objectdatasource does not contain any tables" when i place the codes in the DAL?

OriginalGriff 29-Jun-13 12:01pm

Nope! :laugh:
Have a look at your DAL code, or step into it and see what it does with your query.

Jerrell77 29-Jun-13 12:42pm

the over construct or statement is not supported. any idea why?