>What is a best way to get a list of OPEN tables?
>
>I need to get a checksum of the current record in every currently "open" table.
>Either in an array or a table, so I can then use the SYS(2017) function to get each checksum.
>
>Then I will add them up to come up with a single Combined Checksum

Hi,

if you want to be make sure the data set is not being repeated you could also execute an SQL statement like:

SELECT KeyField, Recno() as Rec ;
  from YourTable ;
  Where KeyField in ;
    (SELECT KeyField ;
        from YourTable ;
        Group by KeyField;
        Having Count(KeyField) > 1);
  Order by 2, 1 ;
  Into Cursor DuplicateRec

seems, to me a lot easier than this checksum manipulation, besides sys(2017), I believe constructs a checksum with aid of your pc's time(miliseconds) so likely two or more fields with repeated values will receive different checksums, should need some testing to confirm this.

Regards,

Koen