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

OR you could also do

SELECT DISTINCT client_name, @num := @num + 1 AS lineNum(this is your new col)
FROM deliveries
JOIN (SELECT @num :=0) AS n ON 1=1;

hope this helps too :)