How to: Display Last n Rows in a table

I am currently running Crystal Reports XI and have been tasked with developing a report that displays only the last 30 rows in a table in ascending order (the records are used for showing data trends over time in a line graph). I have created a Command to extract the records, and by using the TOP 30 statement I can get the first 30 rows in proper order; however, in order to get the last 30 rows I have to sort the records in descending order. This gives me the last 30 rows that I need, but the data is in descending order. Is there another way to get the last 30 rows in a table so that the records come out in ascending order?
The Command I am using looks like this:
SELECT TOP 30 ROWID FROM MYTABLE ORDER BY ROWID DESC
(The ROWID field is alpha numeric)

Hi,
Create a Group based on Rowid in the order-Ascending. This Group should contain all the fields that you require to print along with Rowid. Therafter insert Summary like sum,count etc for for any field within the group of the type numbervar(numeric). This would activate the Group Sort Expert in the Report Menu. Click on it and select Bottom N (with N as 30) within nature of Sort and suppy the fieldname as Rowid.
Hope this solves.....
Thanks,
Amogh.

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BS2012 wrote:
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How to: Display Last n Rows in a table

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