diff --git a/docs/examples/csharp/stmtInsert/Program.cs b/docs/examples/csharp/stmtInsert/Program.cs
index 87e1971feb..80cadb2ff8 100644
--- a/docs/examples/csharp/stmtInsert/Program.cs
+++ b/docs/examples/csharp/stmtInsert/Program.cs
@@ -42,7 +42,7 @@ namespace TDengineExample
 
                 // 5. execute
                 res = TDengine.StmtExecute(stmt);
-                CheckStmtRes(res, "faild to execute");
+                CheckStmtRes(res, "failed to execute");
 
                 // 6. free 
                 TaosMultiBind.FreeTaosBind(tags);
@@ -92,7 +92,7 @@ namespace TDengineExample
                 int code = TDengine.StmtClose(stmt);
                 if (code != 0)
                 {
-                    throw new Exception($"falied to close stmt, {code} reason: {TDengine.StmtErrorStr(stmt)} ");
+                    throw new Exception($"failed to close stmt, {code} reason: {TDengine.StmtErrorStr(stmt)} ");
                 }
             }
         }
diff --git a/docs/examples/python/connect_rest_examples.py b/docs/examples/python/connect_rest_examples.py
index 900ec1022e..dba00b5a82 100644
--- a/docs/examples/python/connect_rest_examples.py
+++ b/docs/examples/python/connect_rest_examples.py
@@ -15,10 +15,10 @@ cursor.execute("CREATE DATABASE power")
 cursor.execute("CREATE STABLE power.meters (ts TIMESTAMP, current FLOAT, voltage INT, phase FLOAT) TAGS (location BINARY(64), groupId INT)")
 
 # insert data
-cursor.execute("""INSERT INTO power.d1001 USING power.meters TAGS(California.SanFrancisco, 2) VALUES ('2018-10-03 14:38:05.000', 10.30000, 219, 0.31000) ('2018-10-03 14:38:15.000', 12.60000, 218, 0.33000) ('2018-10-03 14:38:16.800', 12.30000, 221, 0.31000)
-    power.d1002 USING power.meters TAGS(California.SanFrancisco, 3) VALUES ('2018-10-03 14:38:16.650', 10.30000, 218, 0.25000)
-    power.d1003 USING power.meters TAGS(California.LosAngeles, 2) VALUES ('2018-10-03 14:38:05.500', 11.80000, 221, 0.28000) ('2018-10-03 14:38:16.600', 13.40000, 223, 0.29000)
-    power.d1004 USING power.meters TAGS(California.LosAngeles, 3) VALUES ('2018-10-03 14:38:05.000', 10.80000, 223, 0.29000) ('2018-10-03 14:38:06.500', 11.50000, 221, 0.35000)""")
+cursor.execute("""INSERT INTO power.d1001 USING power.meters TAGS('California.SanFrancisco', 2) VALUES ('2018-10-03 14:38:05.000', 10.30000, 219, 0.31000) ('2018-10-03 14:38:15.000', 12.60000, 218, 0.33000) ('2018-10-03 14:38:16.800', 12.30000, 221, 0.31000)
+    power.d1002 USING power.meters TAGS('California.SanFrancisco', 3) VALUES ('2018-10-03 14:38:16.650', 10.30000, 218, 0.25000)
+    power.d1003 USING power.meters TAGS('California.LosAngeles', 2) VALUES ('2018-10-03 14:38:05.500', 11.80000, 221, 0.28000) ('2018-10-03 14:38:16.600', 13.40000, 223, 0.29000)
+    power.d1004 USING power.meters TAGS('California.LosAngeles', 3) VALUES ('2018-10-03 14:38:05.000', 10.80000, 223, 0.29000) ('2018-10-03 14:38:06.500', 11.50000, 221, 0.35000)""")
 print("inserted row count:", cursor.rowcount)
 
 # query data
diff --git a/docs/examples/python/native_insert_example.py b/docs/examples/python/native_insert_example.py
index 94fd00a6e9..cdde7d23d2 100644
--- a/docs/examples/python/native_insert_example.py
+++ b/docs/examples/python/native_insert_example.py
@@ -25,10 +25,10 @@ def create_stable(conn: taos.TaosConnection):
 
 
 # The generated SQL is:
-# INSERT INTO d1001 USING meters TAGS(California.SanFrancisco, 2) VALUES ('2018-10-03 14:38:05.000', 10.30000, 219, 0.31000) ('2018-10-03 14:38:15.000', 12.60000, 218, 0.33000) ('2018-10-03 14:38:16.800', 12.30000, 221, 0.31000)
-#             d1002 USING meters TAGS(California.SanFrancisco, 3) VALUES ('2018-10-03 14:38:16.650', 10.30000, 218, 0.25000)
-#             d1003 USING meters TAGS(California.LosAngeles, 2) VALUES ('2018-10-03 14:38:05.500', 11.80000, 221, 0.28000) ('2018-10-03 14:38:16.600', 13.40000, 223, 0.29000)
-#             d1004 USING meters TAGS(California.LosAngeles, 3) VALUES ('2018-10-03 14:38:05.000', 10.80000, 223, 0.29000) ('2018-10-03 14:38:06.500', 11.50000, 221, 0.35000)
+# INSERT INTO d1001 USING meters TAGS('California.SanFrancisco', 2) VALUES ('2018-10-03 14:38:05.000', 10.30000, 219, 0.31000) ('2018-10-03 14:38:15.000', 12.60000, 218, 0.33000) ('2018-10-03 14:38:16.800', 12.30000, 221, 0.31000)
+#             d1002 USING meters TAGS('California.SanFrancisco', 3) VALUES ('2018-10-03 14:38:16.650', 10.30000, 218, 0.25000)
+#             d1003 USING meters TAGS('California.LosAngeles', 2) VALUES ('2018-10-03 14:38:05.500', 11.80000, 221, 0.28000) ('2018-10-03 14:38:16.600', 13.40000, 223, 0.29000)
+#             d1004 USING meters TAGS('California.LosAngeles', 3) VALUES ('2018-10-03 14:38:05.000', 10.80000, 223, 0.29000) ('2018-10-03 14:38:06.500', 11.50000, 221, 0.35000)
 
 def get_sql():
     global lines