diff --git a/tests/script/tsim/parser/join.sim b/tests/script/tsim/parser/join.sim
index 8ad5946a54..a2ae25014e 100644
--- a/tests/script/tsim/parser/join.sim
+++ b/tests/script/tsim/parser/join.sim
@@ -496,18 +496,18 @@ sql create table tm0 using m1 tags('abc', 1);
 sql create table m2(ts timestamp, k int) tags(a int, b binary(12));
 
 sql select count(*) from m1, m2 where m1.ts=m2.ts and m1.b=m2.a;
-if $rows != 0 then
+if $rows != 1 then
   return -1
 endi
 
 sql create table tm2 using m2 tags(2, 'abc');
 sql select count(*) from tm0, tm2 where tm0.ts=tm2.ts;
-if $rows != 0 then
+if $rows != 1 then
   return -1
 endi
 
 sql select count(*) from m1, m2 where m1.ts=m2.ts and m1.b=m2.a;
-if $rows != 0 then
+if $rows != 1 then
   return -1
 endi
 
diff --git a/tests/system-test/2-query/distribute_agg_count.py b/tests/system-test/2-query/distribute_agg_count.py
index 7d131cd77d..67d47d7da5 100644
--- a/tests/system-test/2-query/distribute_agg_count.py
+++ b/tests/system-test/2-query/distribute_agg_count.py
@@ -183,7 +183,7 @@ class TDTestCase:
         tdSql.checkRows(20)
 
         tdSql.query(f"select count(c1) from {dbname}.stb1 where t1> 4  partition by tbname")
-        tdSql.checkRows(15)
+        tdSql.checkRows(16)
 
         # union all
         tdSql.query(f"select count(c1) from {dbname}.stb1 union all select count(c1) from {dbname}.stb1 ")
diff --git a/tests/system-test/2-query/last_row.py b/tests/system-test/2-query/last_row.py
index 01da658989..a6bcc2c5f1 100644
--- a/tests/system-test/2-query/last_row.py
+++ b/tests/system-test/2-query/last_row.py
@@ -402,7 +402,8 @@ class TDTestCase:
         tdSql.checkRows(0)
 
         tdSql.query(f"select count(c1) from {dbname}.ct4 where t1 = 1 ")
-        tdSql.checkRows(0)
+        tdSql.checkRows(1)
+        tdSql.checkData(0,0,0)
 
         tdSql.query(f"select last_row(c1) ,last(c1)  from {dbname}.stb1 where  c1 is null")
         tdSql.checkRows(1)
diff --git a/tests/system-test/2-query/mavg.py b/tests/system-test/2-query/mavg.py
index f76980106d..d659a682b1 100644
--- a/tests/system-test/2-query/mavg.py
+++ b/tests/system-test/2-query/mavg.py
@@ -298,7 +298,7 @@ class TDTestCase:
                 if (platform.system().lower() == 'windows' and pre_result.dtype == 'int32'):
                     pre_result = np.array(pre_result, dtype = 'int64')
 
-                pre_mavg = pre_mavg = np.convolve(pre_result, np.ones(k), "valid")[offset_val:]/k
+                #pre_mavg = pre_mavg = np.convolve(pre_result, np.ones(k), "valid")[offset_val:]/k
                 tdSql.query(self.mavg_query_form(
                     sel=sel, func=func, col=col, m_comm=m_comm, k=k, r_comm=r_comm, alias=alias, fr=fr,
                     table_expr=table_expr, condition=condition