Demonstrte but

datafusion/sqllogictest/test_files/aggregates_topk.slt

@@ -95,7 +95,7 @@ statement ok
 set datafusion.optimizer.enable_topk_aggregation = true;
 
 query TI
-select * from (select trace_id, MAX(timestamp) max_ts from traces t group by trace_id) where trace_id != 'b' order by max_ts desc limit 3;
+select * from (select trace_id, MAX(timestamp) max_ts from traces t group by trace_id) where max_ts != 3 order by max_ts desc limit 2;
 ----
 c 4
 a 1