diff --git a/regression-test/data/nereids_syntax_p1/mv/aggregate/agg_sync_mv.out b/regression-test/data/nereids_syntax_p1/mv/aggregate/agg_sync_mv.out
index 020baae99f1e04..692cf74254f426 100644
--- a/regression-test/data/nereids_syntax_p1/mv/aggregate/agg_sync_mv.out
+++ b/regression-test/data/nereids_syntax_p1/mv/aggregate/agg_sync_mv.out
@@ -1500,17 +1500,17 @@
 11	[0, 0]
 
 -- !test --
-\N	{null:"null"}
-1	{0:"string1"}
-2	{1:"string2"}
-3	{2:"string3"}
-4	{3:"string1"}
-5	{4:"string2"}
-6	{5:"string3"}
-7	{6:"string1"}
-8	{7:"string2"}
-9	{8:"string3"}
-10	{9:"string1"}
-11	{10:"string2"}
-12	{11:"string3"}
+\N	1	true	null	null
+1	2	true	string1	string1
+2	1	false	\N	string2
+3	1	false	\N	string3
+4	1	false	\N	string1
+5	1	false	\N	string2
+6	1	false	\N	string3
+7	1	false	\N	string1
+8	1	false	\N	string2
+9	1	false	\N	string3
+10	1	false	\N	string1
+11	1	false	\N	string2
+12	1	false	\N	string3
 
diff --git a/regression-test/suites/nereids_syntax_p1/mv/aggregate/agg_sync_mv.groovy b/regression-test/suites/nereids_syntax_p1/mv/aggregate/agg_sync_mv.groovy
index ae4143cdc7e120..12c5842dd1997a 100644
--- a/regression-test/suites/nereids_syntax_p1/mv/aggregate/agg_sync_mv.groovy
+++ b/regression-test/suites/nereids_syntax_p1/mv/aggregate/agg_sync_mv.groovy
@@ -512,5 +512,14 @@ suite("agg_sync_mv") {
     sql "insert into agg_mv_test select * from agg_mv_test;"
 
     sql "set parallel_pipeline_task_num=1"
-    qt_test "select kbint, map_agg(id, kstr) from agg_mv_test group by kbint order by kbint;"
+    qt_test """
+        select kbint, map_size(m), map_contains_key(m, cast(null as int)),
+               m[cast(null as int)], m[cast(kbint - 1 as int)]
+        from (
+            select kbint, map_agg(id, kstr) as m
+            from agg_mv_test
+            group by kbint
+        ) t
+        order by kbint;
+    """
 }