// reset the IndexLookupType, remove "added" searchKey, add back to endExpression, and clear "added" predicate
if (sortDirection == SortDirectionType.ASC &&
(ispn.getLookupType() == IndexLookupType.LT || ispn.getLookupType() == IndexLookupType.LTE)){
ispn.setLookupType(IndexLookupType.GTE);
ispn.removeLastSearchKey();
ispn.addEndExpression(ExpressionUtil.uncombine(ispn.getInitialExpression()).get(numberOfExprs - 1));
ispn.resetPredicate();
}
// add an inline LIMIT plan node to this index scan plan node
LimitPlanNode lpn = new LimitPlanNode();
lpn.setLimit(1);