diff --git a/src/test/agg_func_test.sql b/src/test/agg_func_test.sql
index 24b2c9efed7119ccc88de0e396bfcf1cb4b02776..a399cc2e857567222be4233aa20244f265d768d5 100644
--- a/src/test/agg_func_test.sql
+++ b/src/test/agg_func_test.sql
@@ -40,4 +40,8 @@ select MAX(id) as max_id, MIN(id) as min_id, SUM(score) as sum_score, COUNT(cour
 
 select COUNT(course) as course_num from grade where score < 90;
 
+select * from grade where id < score;
+
+select * from grade where id > score;
+
 drop table grade;
\ No newline at end of file