diff --git a/tests/system-test/2-query/function_diff.py b/tests/system-test/2-query/function_diff.py
index 2bcacd5ae3e1a18e21664a26516c4f0d8ce5df8d..7d49f875d1d8b6a464de6bf167dc054502f5c21e 100644
--- a/tests/system-test/2-query/function_diff.py
+++ b/tests/system-test/2-query/function_diff.py
@@ -360,15 +360,15 @@ class TDTestCase:
         tdSql.checkRows(229)
         tdSql.checkData(0,0,0)
         tdSql.query("select diff(c1) from stb1 partition by tbname ")
-        tdSql.checkRows(199)
+        tdSql.checkRows(190)
         # tdSql.query("select diff(st1) from stb1 partition by tbname")
         # tdSql.checkRows(229)
         tdSql.query("select diff(st1+c1) from stb1 partition by tbname")
-        tdSql.checkRows(199)
+        tdSql.checkRows(190)
         tdSql.query("select diff(st1+c1) from stb1 partition by tbname")
-        tdSql.checkRows(199)
+        tdSql.checkRows(190)
         tdSql.query("select diff(st1+c1) from stb1 partition by tbname")
-        tdSql.checkRows(199)
+        tdSql.checkRows(190)
 
         # # bug need fix 
         # tdSql.query("select diff(st1+c1) from stb1 partition by tbname slimit 1 ")
@@ -378,7 +378,7 @@ class TDTestCase:
 
         # bug need fix 
         tdSql.query("select diff(st1+c1) from stb1 partition by tbname")
-        tdSql.checkRows(199)        
+        tdSql.checkRows(190)
 
         # bug need fix 
         # tdSql.query("select tbname , diff(c1) from stb1 partition by tbname")
diff --git a/tests/system-test/2-query/mavg.py b/tests/system-test/2-query/mavg.py
index 346d9e1df39b6abd46a8305b0f1a1714781b99f3..de379e39ced9c115df58bf4ec10a75885d1a5776 100644
--- a/tests/system-test/2-query/mavg.py
+++ b/tests/system-test/2-query/mavg.py
@@ -678,15 +678,15 @@ class TDTestCase:
         tdSql.checkRows(68)
         tdSql.checkData(0,0,1.000000000)
         tdSql.query("select mavg(c1,3) from stb1 partition by tbname ")
-        tdSql.checkRows(38)
+        tdSql.checkRows(20)
         # tdSql.query("select mavg(st1,3) from stb1 partition by tbname")
         # tdSql.checkRows(38)
         tdSql.query("select mavg(st1+c1,3) from stb1 partition by tbname")
-        tdSql.checkRows(38)
+        tdSql.checkRows(20)
         tdSql.query("select mavg(st1+c1,3) from stb1 partition by tbname")
-        tdSql.checkRows(38)
+        tdSql.checkRows(20)
         tdSql.query("select mavg(st1+c1,3) from stb1 partition by tbname")
-        tdSql.checkRows(38)
+        tdSql.checkRows(20)
 
         # # bug need fix 
         # tdSql.query("select mavg(st1+c1,3) from stb1 partition by tbname slimit 1 ")
@@ -696,7 +696,7 @@ class TDTestCase:
 
         # bug need fix 
         tdSql.query("select mavg(st1+c1,3) from stb1 partition by tbname")
-        tdSql.checkRows(38)        
+        tdSql.checkRows(20)
 
         # bug need fix 
         # tdSql.query("select tbname , mavg(c1,3) from stb1 partition by tbname")