Thank you so much for your patience and taking the time to explain it further to me. One day, I live in the fear that I might understand all of this but not today. Although I do understand a little more. I understand now why Zaid chose to add the union command. But what would have made him decide to use select 1,2,3,4,5. I understand that using the order by statement he could determine the number of columns in the table. But the column headings much have been unknown at that point. So why choose select 1,2,3,4,5. Is it just a knowledge of SQL which I don’t have at present or something else?

Thanks again and regards

Nick