Row number SQL | Row number function in SQL server



Row number SQL
Row number function in SQL server
Hello everyone, today I am going to discuss the Row_number feature in SQL server.

what is Row_Number()?

Row_Number is used to generate the number of each row dynamically in a sequential order based on some column orders.

Row_Number() must be used with order by clause, without order by we can not use the Row_Nuber function.

Row_Number() over(order by EmpName) as RowNumber

Generate unique Id for each row dynamically: – In case if the table does not have a primary key or any unique identification number. you can use Row_Number to provide the unique ID for a table.

select
Row_Number() over(Order by EmailId) as Id,
EmailId,FirstName,LastName
from
Employee

Nguồn: https://rmacct.org/

Xem thêm bài viết khác: https://rmacct.org/cong-nghe/

  • its really useful dependra…put some more video

    deeptimayee meher July 5, 2020 12:29 am Reply

Leave a Reply

Your email address will not be published. Required fields are marked *