If you anticipate jumping around in the result set using statements such as GET LAST, you should add another option to the end of your OPEN QUERY statement: the INDEXED-REPOSITION keyword. If you do this, your DEFINE QUERY statement must also specify the SCROLLING keyword.

If you don't open the query with INDEXED-REPOSITION, then the AVM retrieves all records in sequence in order to satisfy a request such as GET LAST. This can be very costly. If you do use INDEXED-REPOSITION, the AVM uses indexes, if possible, to jump directly to a requested row, greatly improving performance in some cases. There are side effects to doing this, however, in terms of the integrity of the results list, as discussed in INDEXED-REPOSITIONand field lists.