diff --git a/tests/script/general/parser/fill.sim b/tests/script/general/parser/fill.sim
index d109dd50f7c0ba0684295dbf093ba1b280e04fce..3413a0b59652550701b7220e3c8cc1fc90785b91 100644
--- a/tests/script/general/parser/fill.sim
+++ b/tests/script/general/parser/fill.sim
@@ -1050,6 +1050,27 @@ sql_error select min(c3) from m_fl_mt0 interval(10w) fill(value, 20)
 sql_error select max(c3) from m_fl_mt0 interval(1n) fill(prev)
 sql_error select min(c3) from m_fl_mt0 interval(1y) fill(value, 20)
 
+sql create table nexttb1 (ts timestamp, f1 int);
+sql insert into nexttb1 values ('2021-08-08 1:1:1', NULL);
+sql insert into nexttb1 values ('2021-08-08 1:1:5', 3);
+
+sql select last(*) from nexttb1 where ts >= '2021-08-08 1:1:1' and ts < '2021-08-08 1:1:10' interval(1s) fill(next);
+if $rows != 9 then
+  return -1
+endi
+if $data00 != @21-08-08 01:01:01.000@ then
+  return -1
+endi
+if $data01 != @21-08-08 01:01:01.000@ then
+  return -1
+endi
+if $data02 != 3 then
+  return -1
+endi
+
+
+
+
 print =============== clear
 #sql drop database $db
 #sql show databases
@@ -1057,4 +1078,4 @@ print =============== clear
 #  return -1
 #endi
 
-system sh/exec.sh -n dnode1 -s stop -x SIGINT
\ No newline at end of file
+system sh/exec.sh -n dnode1 -s stop -x SIGINT
diff --git a/tests/script/general/parser/function.sim b/tests/script/general/parser/function.sim
index 5edadad3a6686ad8fafee6d24e741bb63622c20e..0c93fe919a8f8d934017135ecf1d3cff4515a3e1 100644
--- a/tests/script/general/parser/function.sim
+++ b/tests/script/general/parser/function.sim
@@ -1148,3 +1148,21 @@ endi
 
 
 sql select derivative(test_column_alias_name, 1s, 0) from (select avg(k) test_column_alias_name from t1 interval(1s));
+
+sql create table smeters (ts timestamp, current float, voltage int);
+sql insert into smeters values ('2021-08-08 10:10:10', 10, 1);
+sql insert into smeters values ('2021-08-08 10:10:12', 10, 2);
+
+sql select stddev(voltage) from smeters where ts>='2021-08-08 10:10:10.000' and ts < '2021-08-08 10:10:20.000'  and current=10 interval(1000a);
+if $rows != 2 then
+  return -1
+endi
+if $data00 != @21-08-08 10:10:10.000@ then
+  return -1
+endi
+if $data10 != @21-08-08 10:10:12.000@ then
+  return -1
+endi
+
+
+