Re: Subfile hang

[Booth Martin <booth@xxxxxxxxxxxx>]

All good reasons for using a FOR loop instead of a DO loop, imho.  Lots 
of typical *duh* errors just disappear with the FOR loop.



Cassidy, Alan wrote:
> => Sounds like it's in a loop cycle trying to do a CHAIN using the subfile 
> record number, but it's not incremented (staying at zero), or there's no test to 
> leave the loop on a number that's not returned.
>
> For reading subfiles by record number:
> (X) You have to clear the field that you're using to loop and read the subfile.
> (X) Initialize a value to start from in that field, 
> (X) Increment the record number field you use to CHAIN with each loop, 
> (X) And test for LEAVE-ing the loop, whether it's a not-found condition (NRF) on the CHAIN, or a maximum that we have from when we filled the subfile.
>
> Anyway, those are things to look for when you get an error like that.
>
> --Alan