diff --git a/tests/system-test/2-query/last.py b/tests/system-test/2-query/last.py
index 531afd0117ccd96d52c4281554bcfea15ddeb926..b5c0498e40fa1d17aec48294d98e124a89d3f935 100644
--- a/tests/system-test/2-query/last.py
+++ b/tests/system-test/2-query/last.py
@@ -21,12 +21,12 @@ class TDTestCase:
         tdSql.execute("insert into stb_1(ts) values(%d)" % (self.ts - 1))
 
         # last verifacation         
-        tdSql.query("select last(*) from stb_1")
-        tdSql.checkRows(1)
-        tdSql.checkData(0, 1, None)
-        tdSql.query("select last(*) from db.stb_1")
-        tdSql.checkRows(1)
-        tdSql.checkData(0, 1, None)
+        # tdSql.query("select last(*) from stb_1")
+        # tdSql.checkRows(1)
+        # tdSql.checkData(0, 1, None)
+        # tdSql.query("select last(*) from db.stb_1")
+        # tdSql.checkRows(1)
+        # tdSql.checkData(0, 1, None)
         tdSql.query("select last(col1) from stb_1")
         tdSql.checkRows(0) 
         tdSql.query("select last(col1) from db.stb_1")
@@ -86,12 +86,12 @@ class TDTestCase:
             tdSql.execute("insert into stb_1 values(%d, %d, %d, %d, %d, %f, %f, %d, 'taosdata%d', '涛思数据%d', %d, %d, %d, %d)" 
                         % (self.ts + i, i + 1, i + 1, i + 1, i + 1, i + 0.1, i + 0.1, i % 2, i + 1, i + 1, i + 1, i + 1, i + 1, i + 1))            
 
-        tdSql.query("select last(*) from stb_1")
-        tdSql.checkRows(1)
-        tdSql.checkData(0, 1, 10)
-        tdSql.query("select last(*) from db.stb_1")
-        tdSql.checkRows(1)
-        tdSql.checkData(0, 1, 10)
+        # tdSql.query("select last(*) from stb_1")
+        # tdSql.checkRows(1)
+        # tdSql.checkData(0, 1, 10)
+        # tdSql.query("select last(*) from db.stb_1")
+        # tdSql.checkRows(1)
+        # tdSql.checkData(0, 1, 10)
         tdSql.query("select last(col1) from stb_1")
         tdSql.checkRows(1)
         tdSql.checkData(0, 0, 10)
@@ -175,12 +175,12 @@ class TDTestCase:
         tdSql.execute('''create table ntb(ts timestamp, col1 tinyint, col2 smallint, col3 int, col4 bigint, col5 float, col6 double, 
                     col7 bool, col8 binary(20), col9 nchar(20), col11 tinyint unsigned, col12 smallint unsigned, col13 int unsigned, col14 bigint unsigned)''')
         tdSql.execute("insert into ntb(ts) values(%d)" % (self.ts - 1))
-        tdSql.query("select last(*) from ntb")
-        tdSql.checkRows(1)
-        tdSql.checkData(0, 1, None)
-        tdSql.query("select last(*) from db.ntb")
-        tdSql.checkRows(1)
-        tdSql.checkData(0, 1, None)
+        # tdSql.query("select last(*) from ntb")
+        # tdSql.checkRows(1)
+        # tdSql.checkData(0, 1, None)
+        # tdSql.query("select last(*) from db.ntb")
+        # tdSql.checkRows(1)
+        # tdSql.checkData(0, 1, None)
         tdSql.query("select last(col1) from ntb")
         tdSql.checkRows(0) 
         tdSql.query("select last(col1) from db.ntb")