Menu
Why does it say 'Invalid Column Name' for the RowNumber in WHERE.
SELECT Id, Name,
ROW_NUMBER() OVER (ORDER BY Id) AS 'RowNumber'
FROM Folks
WHERE RowNumber=3
While can be used with ORDER BY
SELECT Id, Name
ROW_NUMBER() OVER (ORDER BY Id) AS 'RowNumber'
FROM Folks
ORDER BY RowNumber DESC
304
In my experience, an aggregate (DISTINCT or GROUP BY) can be quicker then a ROW_NUMBER() approach.
The Row_Number function is used to provide consecutive numbering of the rows in the result by the order selected in the OVER clause for each partition specified in the OVER clause. It will assign the value 1 for the first row and increase the number of the subsequent rows.
ROW_NUMBER function is a SQL ranking function that assigns a sequential rank number to each new record in a partition. When the SQL Server ROW NUMBER function detects two identical values in the same partition, it assigns different rank numbers to both.
The row_number() window function can be used without order by in over to arbitrarily assign a unique value to each row.
Try this:
SELECT *
FROM (SELECT Id, Name,
ROW_NUMBER() OVER (ORDER BY Id) AS 'RowNumber'
FROM Folks
) AS A
WHERE RowNumber = 3
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With
