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I just was looking over IBM's sample subfile program in VaRPG. I'd copied, it, changed the file to display a data file on our AS/400 and was showing the output to someone that knows the data. The VaRPG subfile offers a "navigator bar", and one of the icons is "Last page." He clicked it and laughed, saying "This is a 40,000 record file. Lets see..." and then looked really funny. Then he looked again and said "It can't read the file that fast!" To make a boring story short, a review of the code showed that the last page had been loaded by taking the number of records in the file and subtracting the page size, and filling the subfile from that point. Very neat, very fast. Also a new technique I'd not seen before. All of which puts me of a mind to ask for a religious discussion on subfiles. If DOU and DOW can start lengthy debate, I should think proper subfile techniques could be fascinating. One of the downsides of the technique described is that it appears to work on a physical file only, disregarding all logicals, even if specified. -- ----------------------------------------------------------- boothm@ibm.net ----------------------------------------------------------- +--- | This is the Midrange System Mailing List! | To submit a new message, send your mail to MIDRANGE-L@midrange.com. | To subscribe to this list send email to MIDRANGE-L-SUB@midrange.com. | To unsubscribe from this list send email to MIDRANGE-L-UNSUB@midrange.com. | Questions should be directed to the list owner/operator: david@midrange.com +---
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