how do i reverse the records in a dataset .



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how do i reverse the records in a dataset .

Postby logeshwari » Fri Oct 04, 2013 12:32 am

hi,


how do i reverse the records in a dataset (esds,ksds).. what are all the ways that i can make it ?
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Re: how do i reverse the records in a dataset .

 

Re: how do i reverse the records in a dataset .

Postby Akatsukami » Fri Oct 04, 2013 12:48 am

First, it is a very bad idea to overwrite a data set.

Now, suppose your requirement is to create a second data set, with the records in reverse order from the first. For a PS data set or a VSAM ESDS, you're better off using your sort product; put a counter on the end of the record and then sort in descending order.

For a VSAM KSDS, perform a logical NOT on the key.
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