SQL to output line number in results of a query

Question

I would like to generate a line number for each line in the results of a sql query. How is it possible to do that?

Example: In the request

select di         


        

Answer 1

In SQL we are also using this query:

select row_number() over (order by table_kid) as S_No ,table_columnname,table_columnname2 from tablename where table_fieldcondition='condtionnal falg or data ';

Here table_kid or may be other table_columnname