Merge branch 'develop' into szhou/fix/TD-11389

a6bb3f28 · shenglian-zhou · GitHub · 5479692b · dc7dd67f · a6bb3f28
143 changed file
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -8,6 +8,7 @@ def skipbuild = 0
 def win_stop = 0
 def scope = []
 def mod = [0,1,2,3,4]
+def sim_mod = [0,1,2,3]

 def abortPreviousBuilds() {
  def currentJobName = env.JOB_NAME
@@ -45,6 +46,7 @@ def pre_test(){
    killall -9 gdb || echo "no gdb running"
    killall -9 python3.8 || echo "no python program running"
    cd ${WKC}
+    [ -f src/connector/grafanaplugin/README.md ] && rm -f src/connector/grafanaplugin/README.md > /dev/null || echo "failed to remove grafanaplugin README.md"
    git reset --hard HEAD~10 >/dev/null
    '''
    script {
@@ -120,6 +122,7 @@ def pre_test_noinstall(){
    sh'hostname'
    sh'''
    cd ${WKC}
+    [ -f src/connector/grafanaplugin/README.md ] && rm -f src/connector/grafanaplugin/README.md > /dev/null || echo "failed to remove grafanaplugin README.md"
    git reset --hard HEAD~10 >/dev/null
    '''
    script {
@@ -192,6 +195,7 @@ def pre_test_mac(){
    sh'hostname'
    sh'''
    cd ${WKC}
+    [ -f src/connector/grafanaplugin/README.md ] && rm -f src/connector/grafanaplugin/README.md > /dev/null || echo "failed to remove grafanaplugin README.md"
    git reset --hard HEAD~10 >/dev/null
    '''
    script {
@@ -382,7 +386,9 @@ pipeline {
                  temp = (gitlog =~ /\((.*?)\)/)
                  temp = temp[0].remove(1)
                  scope = temp.split(",")
+                  scope = ['connector','query','insert','other','tools','taosAdapter']
                  Collections.shuffle mod
+                  Collections.shuffle sim_mod
                }

              }
@@ -400,10 +406,10 @@ pipeline {
          }
      parallel {
        stage('python_1') {
-          agent{label " slave1 || slave6 || slave11 || slave16 "}
+          agent{label " slave1 || slave11 "}
          steps {
            pre_test()
-            timeout(time: 55, unit: 'MINUTES'){
+            timeout(time: 100, unit: 'MINUTES'){
              script{
                scope.each {
                  sh """
@@ -417,10 +423,10 @@ pipeline {
          }
        }
        stage('python_2') {
-          agent{label " slave2 || slave7 || slave12 || slave17 "}
+          agent{label " slave2 || slave12 "}
          steps {
            pre_test()
-            timeout(time: 55, unit: 'MINUTES'){
+            timeout(time: 100, unit: 'MINUTES'){
                 script{
                  scope.each {
                    sh """
@@ -434,7 +440,7 @@ pipeline {
          }
        }
        stage('python_3') {
-          agent{label " slave3 || slave8 || slave13 ||slave18 "}
+          agent{label " slave3 || slave13 "}
          steps {
            timeout(time: 105, unit: 'MINUTES'){
              pre_test()
@@ -451,9 +457,9 @@ pipeline {
          }
        }
        stage('python_4') {
-          agent{label " slave4 || slave9 || slave14 || slave19 "}
+          agent{label " slave4 || slave14 "}
          steps {
-            timeout(time: 55, unit: 'MINUTES'){
+            timeout(time: 100, unit: 'MINUTES'){
              pre_test()
              script{
              scope.each {
@@ -469,9 +475,9 @@ pipeline {
          }
        }
        stage('python_5') {
-          agent{label " slave5 || slave10 || slave15 || slave20 "}
+          agent{label " slave5 || slave15 "}
          steps {
-            timeout(time: 55, unit: 'MINUTES'){
+            timeout(time: 100, unit: 'MINUTES'){
              pre_test()
              script{
              scope.each {
@@ -486,35 +492,98 @@ pipeline {
            }
          }
        }
-        stage('arm64centos7') {
-          agent{label " arm64centos7 "}
+        stage('sim_1') {
+          agent{label " slave6 || slave16 "}
          steps {
-              pre_test_noinstall()
-            }
+            pre_test()
+            timeout(time: 100, unit: 'MINUTES'){
+                  sh """
+                    date
+                    cd ${WKC}/tests
+                    ./test-CI.sh sim 4 ${sim_mod[0]}
+                    date"""
+              }
+          }            
        }
-        stage('arm64centos8') {
-          agent{label " arm64centos8 "}
+        stage('sim_2') {
+          agent{label " slave7 || slave17 "}
          steps {
-              pre_test_noinstall()
+            pre_test()
+            timeout(time: 100, unit: 'MINUTES'){
+              sh """
+                date
+                cd ${WKC}/tests
+                ./test-CI.sh sim 4 ${sim_mod[1]} 
+                date"""
            }
+          }
        }
-        stage('arm32bionic') {
-          agent{label " arm32bionic "}
+        stage('sim_3') {
+          agent{label " slave8 || slave18 "}
          steps {
-              pre_test_noinstall()
+            timeout(time: 105, unit: 'MINUTES'){
+              pre_test()
+              sh """
+                date
+                cd ${WKC}/tests
+                ./test-CI.sh sim 4 ${sim_mod[2]}
+                date"""
            }
+          }
        }
-        stage('arm64bionic') {
-          agent{label " arm64bionic "}
+        stage('sim_4') {
+          agent{label " slave9 || slave19 "}
          steps {
-              pre_test_noinstall()
+            timeout(time: 100, unit: 'MINUTES'){
+              pre_test()
+              sh """
+                date
+                cd ${WKC}/tests
+                ./test-CI.sh sim 4 ${sim_mod[3]}
+                date"""
+              }
            }
+          
        }
-        stage('arm64focal') {
-          agent{label " arm64focal "}
+        stage('other') {
+          agent{label " slave10 || slave20 "}
          steps {
-              pre_test_noinstall()
+            timeout(time: 100, unit: 'MINUTES'){
+              pre_test()
+              timeout(time: 60, unit: 'MINUTES'){
+                sh '''
+                cd ${WKC}/tests/pytest
+                ./crash_gen.sh -a -p -t 4 -s 2000
+                '''
+              }
+              timeout(time: 60, unit: 'MINUTES'){
+                sh '''
+                cd ${WKC}/tests/pytest
+                rm -rf /var/lib/taos/*
+                rm -rf /var/log/taos/*
+                ./handle_crash_gen_val_log.sh
+                '''
+                sh '''
+                cd ${WKC}/tests/pytest
+                rm -rf /var/lib/taos/*
+                rm -rf /var/log/taos/*
+                ./handle_taosd_val_log.sh
+                '''
+              }
+              catchError(buildResult: 'SUCCESS', stageResult: 'FAILURE') {
+                sh '''
+                cd ${WKC}/tests/pytest
+                ./valgrind-test.sh 2>&1 > mem-error-out.log
+                ./handle_val_log.sh
+                '''
+              } 
+              sh '''
+                cd ${WKC}/tests
+                ./test-all.sh full unit
+                date
+              '''
            }
+          }
        }
        stage('centos7') {
          agent{label " centos7 "}
@@ -546,12 +615,41 @@ pipeline {
              pre_test_mac()
            }
        }
-
+        stage('arm64centos7') {
+          agent{label " arm64centos7 "}
+          steps {     
+              pre_test_noinstall()    
+            }
+        }
+        stage('arm64centos8') {
+          agent{label " arm64centos8 "}
+          steps {     
+              pre_test_noinstall()    
+            }
+        }
+        stage('arm32bionic') {
+          agent{label " arm32bionic "}
+          steps {     
+              pre_test_noinstall()    
+            }
+        }
+        stage('arm64bionic') {
+          agent{label " arm64bionic "}
+          steps {     
+              pre_test_noinstall()    
+            }
+        }
+        stage('arm64focal') {
+          agent{label " arm64focal "}
+          steps {     
+              pre_test_noinstall()    
+            }
+        }
        stage('build'){
          agent{label " wintest "}
          steps {
            pre_test()
-            script{
+            script{             
                while(win_stop == 0){
                  sleep(1)
                  }
@@ -561,6 +659,7 @@ pipeline {
        stage('test'){
          agent{label "win"}
          steps{
+            
            catchError(buildResult: 'FAILURE', stageResult: 'FAILURE') {
                pre_test_win()
                timeout(time: 20, unit: 'MINUTES'){
@@ -569,7 +668,7 @@ pipeline {
                .\\test-all.bat wintest
                '''
                }
-            }
+            }     
            script{
              win_stop=1
            }

--- a/documentation20/cn/02.getting-started/01.docker/docs.md
+++ b/documentation20/cn/02.getting-started/01.docker/docs.md
@@ -15,22 +15,34 @@ $ docker -v
 Docker version 20.10.3, build 48d30b5
 ```

-## 在 Docker 容器中运行 TDengine
+## 使用 Docker 在容器中运行 TDengine

-1，使用命令拉取 TDengine 镜像，并使它在后台运行。
+### 在 Docker 容器中运行 TDengine server

 ```bash
-$  docker run -d --name tdengine tdengine/tdengine
-7760c955f225d72e9c1ec5a4cef66149a7b94dae7598b11eb392138877e7d292
+$ docker run -d -p 6030-6041:6030-6041 -p 6030-6041:6030-6041/udp tdengine/tdengine
+526aa188da767ae94b244226a2b2eec2b5f17dd8eff592893d9ec0cd0f3a1ccd
 ```

+这条命令，启动一个运行了 TDengine server 的 docker 容器，并且将容器的 6030 到 6041 端口映射到宿主机的 6030 到 6041 端口上。如果宿主机已经运行了 TDengine server 并占用了相同端口，需要映射容器的端口到不同的未使用端口段。（详情参见 [TDengine 2.0 端口说明](https://www.taosdata.com/cn/documentation/faq#port)）。为了支持 TDengine 客户端操作 TDengine server 服务， TCP 和 UDP 端口都需要打开。
+
 - **docker run**：通过 Docker 运行一个容器
- **--name tdengine**：设置容器名称，我们可以通过容器名称来查看对应的容器
 - **-d**：让容器在后台运行
+- **-p**：指定映射端口。注意：如果不是用端口映射，依然可以进入 Docker 容器内部使用 TDengine 服务或进行应用开发，只是不能对容器外部提供服务
 - **tdengine/tdengine**：拉取的 TDengine 官方发布的应用镜像
- **7760c955f225d72e9c1ec5a4cef66149a7b94dae7598b11eb392138877e7d292**：这个返回的长字符是容器 ID，我们也可以通过容器 ID 来查看对应的容器
+- **526aa188da767ae94b244226a2b2eec2b5f17dd8eff592893d9ec0cd0f3a1ccd**：这个返回的长字符是容器 ID，我们也可以通过容器 ID 来查看对应的容器
+
+进一步，还可以使用 docker run 命令启动运行 TDengine server 的 docker 容器，并使用 --name 命令行参数将容器命名为 tdengine，使用 --hostname 指定 hostname 为 tdengine-server，通过 -v 挂载本地目录(-v)，实现宿主机与容器内部的数据同步，防止容器删除后，数据丢失。

-2，确认容器是否已经正确运行。
+```
+$ docker run -d --name tdengine --hostname="tdengine-server" -v ~/work/taos/log:/var/log/taos -v ~/work/taos/data:/var/lib/taos  -p 6030-6041:6030-6041 -p 6030-6041:6030-6041/udp tdengine/tdengine
+```
+
+- **--name tdengine**：设置容器名称，我们可以通过容器名称来访问对应的容器
+- **--hostnamename=tdengine-server**：设置容器内 Linux 系统的 hostname，我们可以通过映射 hostname 和 IP 来解决容器 IP 可能变化的问题。
+- **-v**：设置宿主机文件目录映射到容器内目录，避免容器删除后数据丢失。
+
+### 使用 docker ps 命令确认容器是否已经正确运行

 ```bash
 $ docker ps
@@ -45,23 +57,23 @@ c452519b0f9b   tdengine/tdengine   "taosd"   14 minutes ago   Up 14 minutes   ·
 - **CREATED**：容器创建时间。
 - **STATUS**：容器状态。UP 表示运行中。

-3，进入 Docker 容器内，使用 TDengine。
+### 通过 docker exec 命令，进入到 docker 容器中去做开发

 ```bash
 $ docker exec -it tdengine /bin/bash
-root@c452519b0f9b:~/TDengine-server-2.0.20.13# 
+root@tdengine-server:~/TDengine-server-2.0.20.13# 
 ```

 - **docker exec**：通过 docker exec 命令进入容器，如果退出，容器不会停止。
 - **-i**：进入交互模式。
 - **-t**：指定一个终端。
- **c452519b0f9b**：容器 ID，需要根据 docker ps 指令返回的值进行修改。
+- **tdengine**：容器名称，需要根据 docker ps 指令返回的值进行修改。
 - **/bin/bash**：载入容器后运行 bash 来进行交互。

-4，进入容器后，执行 taos shell 客户端程序。
+进入容器后，执行 taos shell 客户端程序。

 ```bash
-$ root@c452519b0f9b:~/TDengine-server-2.0.20.13# taos
+root@tdengine-server:~/TDengine-server-2.0.20.13# taos

 Welcome to the TDengine shell from Linux, Client Version:2.0.20.13
 Copyright (c) 2020 by TAOS Data, Inc. All rights reserved.
@@ -73,19 +85,92 @@ TDengine 终端成功连接服务端，打印出了欢迎消息和版本信息

 在 TDengine 终端中，可以通过 SQL 命令来创建/删除数据库、表、超级表等，并可以进行插入和查询操作。具体可以参考 [TAOS SQL 说明文档](https://www.taosdata.com/cn/documentation/taos-sql)。

-## 通过 taosdemo 进一步了解 TDengine

-1，接上面的步骤，先退出 TDengine 终端程序。
+### 在宿主机访问 Docker 容器中的 TDengine server

-```bash
-$ taos> q
-root@c452519b0f9b:~/TDengine-server-2.0.20.13#
+在使用了 -p 命令行参数映射了正确的端口启动了 TDengine Docker 容器后，就在宿主机使用 taos shell 命令即可访问运行在  Docker 容器中的 TDengine。
+
+```
+$ taos
+
+Welcome to the TDengine shell from Linux, Client Version:2.0.22.3
+Copyright (c) 2020 by TAOS Data, Inc. All rights reserved.
+
+taos>
 ```

-2，在命令行界面执行 taosdemo。
+也可以在宿主机使用 curl 通过 RESTful 端口访问 Docker 容器内的 TDengine server。
+
+```
+$ curl -u root:taosdata -d 'show databases' 127.0.0.1:6041/rest/sql
+{"status":"succ","head":["name","created_time","ntables","vgroups","replica","quorum","days","keep0,keep1,keep(D)","cache(MB)","blocks","minrows","maxrows","wallevel","fsync","comp","cachelast","precision","update","status"],"column_meta":[["name",8,32],["created_time",9,8],["ntables",4,4],["vgroups",4,4],["replica",3,2],["quorum",3,2],["days",3,2],["keep0,keep1,keep(D)",8,24],["cache(MB)",4,4],["blocks",4,4],["minrows",4,4],["maxrows",4,4],["wallevel",2,1],["fsync",4,4],["comp",2,1],["cachelast",2,1],["precision",8,3],["update",2,1],["status",8,10]],"data":[["test","2021-08-18 06:01:11.021",10000,4,1,1,10,"3650,3650,3650",16,6,100,4096,1,3000,2,0,"ms",0,"ready"],["log","2021-08-18 05:51:51.065",4,1,1,1,10,"30,30,30",1,3,100,4096,1,3000,2,0,"us",0,"ready"]],"rows":2}
+```
+
+这条命令，通过 RESTful 接口访问 TDengine server，这时连接的是本机的 6041 端口，可见连接成功。
+
+TDengine RESTful 接口详情请参考[官方文档](https://www.taosdata.com/cn/documentation/connector#restful)。
+
+
+### 使用 Docker 容器运行 TDengine server 和 taosAdapter
+
+在 TDegnine 2.4.0.0 之后版本的 Docker 容器，开始一个组件 taosAdapter，taosAdapter 支持通过 RESTful 接口对 TDengine server 的数据写入和查询能力，并提供和 InfluxDB/OpenTSDB 兼容的数据摄取接口，允许 InfluxDB/OpenTSDB 应用程序无缝移植到 TDengine。
+
+注意：如果容器中运行 taosAdapter，需要根据需要增加映射其他端口，具体端口默认配置和修改方法请参考[taosAdapter文档](https://github.com/taosdata/taosadapter/blob/develop/README-CN.md)。
+
+使用 docker 运行 TDengine 2.4.0.0 版本镜像：
+
+```
+$ docker run -d --name tdengine-taosa -p 6030-6049:6030-6049 -p 6030-6049:6030-6049/udp tdengine/tdengine:2.4.0.0
+```
+
+使用 curl 命令验证 RESTful 接口可以正常工作：
+```
+$ curl -H 'Authorization: Basic cm9vdDp0YW9zZGF0YQ==' -d 'show databases;' 127.0.0.1:6041/rest/sql
+
+{"status":"succ","head":["name","created_time","ntables","vgroups","replica","quorum","days","keep","cache(MB)","blocks","minrows","maxrows","wallevel","fsync","comp","cachelast","precision","update","status"],"column_meta":[["name",8,32],["created_time",9,8],["ntables",4,4],["vgroups",4,4],["replica",3,2],["quorum",3,2],["days",3,2],["keep",8,24],["cache(MB)",4,4],["blocks",4,4],["minrows",4,4],["maxrows",4,4],["wallevel",2,1],["fsync",4,4],["comp",2,1],["cachelast",2,1],["precision",8,3],["update",2,1],["status",8,10]],"data":[["log","2021-12-28 09:18:55.765",10,1,1,1,10,"30",1,3,100,4096,1,3000,2,0,"us",0,"ready"]],"rows":1}
+```
+
+taosAdapter 支持多个数据收集代理软件（如 Telegraf、StatsD、collectd 等），这里仅模拟 StasD 写入数据，在宿主机执行命令如下：
+```
+$ echo "foo:1|c" | nc -u -w0 127.0.0.1 6044
+```
+
+然后可以使用 taos shell 查询 taosAdapter 自动创建的数据库 statsd 和 超级表 foo 中的内容：
+```
+taos> show databases;
+              name              |      created_time       |   ntables   |   vgroups   | replica | quorum |  days  |           keep           |  cache(MB)  |   blocks    |   minrows   |   maxrows   | wallevel |    fsync    | comp | cachelast | precision | update |   status   |
+====================================================================================================================================================================================================================================================================================
+ log                            | 2021-12-28 09:18:55.765 |          12 |           1 |       1 |      1 |     10 | 30                       |           1 |           3 |         100 |        4096 |        1 |        3000 |    2 |         0 | us        |      0 | ready      |
+ statsd                         | 2021-12-28 09:21:48.841 |           1 |           1 |       1 |      1 |     10 | 3650                     |          16 |           6 |         100 |        4096 |        1 |        3000 |    2 |         0 | ns        |      2 | ready      |
+Query OK, 2 row(s) in set (0.002112s)
+
+taos> use statsd;
+Database changed.
+
+taos> show stables;
+              name              |      created_time       | columns |  tags  |   tables    |
+============================================================================================
+ foo                            | 2021-12-28 09:21:48.894 |       2 |      1 |           1 |
+Query OK, 1 row(s) in set (0.001160s)
+
+taos> select * from foo;
+              ts               |         value         |         metric_type          |
+=======================================================================================
+ 2021-12-28 09:21:48.840820836 |                     1 | counter                      |
+Query OK, 1 row(s) in set (0.001639s)
+
+taos>
+```
+
+可以看到模拟数据已经被写入到 TDengine 中。
+
+
+### 应用示例：在宿主机使用 taosdemo 写入数据到 Docker 容器中的 TDengine server
+
+1，在宿主机命令行界面执行 taosdemo 写入数据到 Docker 容器中的 TDengine server

 ```bash
-root@c452519b0f9b:~/TDengine-server-2.0.20.13# taosdemo
+$ taosdemo

 taosdemo is simulating data generated by power equipments monitoring...

@@ -134,9 +219,9 @@ column[0]:FLOAT column[1]:INT column[2]:FLOAT

 回车后，该命令将在数据库 test 下面自动创建一张超级表 meters，该超级表下有 1 万张表，表名为 "d0" 到 "d9999"，每张表有 1 万条记录，每条记录有 (ts, current, voltage, phase) 四个字段，时间戳从 "2017-07-14 10:40:00 000" 到 "2017-07-14 10:40:09 999"，每张表带有标签 location 和 groupId，groupId 被设置为 1 到 10， location 被设置为 "beijing" 或者 "shanghai"。

-执行这条命令大概需要几分钟，最后共插入 1 亿条记录。
+最后共插入 1 亿条记录。

-3，进入 TDengine 终端，查看 taosdemo 生成的数据。
+2，进入 TDengine 终端，查看 taosdemo 生成的数据。

 - **进入命令行。**

@@ -217,27 +302,3 @@ tdengine
 - **docker stop**：通过 docker stop 停止指定的正在运行中的 docker 镜像。
 - **tdengine**：容器名称。

-## 编程开发时连接在 Docker 中的 TDengine
-
-从 Docker 之外连接使用在 Docker 容器内运行的 TDengine 服务，有以下两个思路：
-
-1，通过端口映射(-p)，将容器内部开放的网络端口映射到宿主机的指定端口上。通过挂载本地目录(-v)，可以实现宿主机与容器内部的数据同步，防止容器删除后，数据丢失。
-
-```bash
-$ docker run -d -v /etc/taos:/etc/taos -p 6041:6041 tdengine/tdengine
-526aa188da767ae94b244226a2b2eec2b5f17dd8eff592893d9ec0cd0f3a1ccd
-
-$ curl -u root:taosdata -d 'show databases' 127.0.0.1:6041/rest/sql
-{"status":"succ","head":["name","created_time","ntables","vgroups","replica","quorum","days","keep0,keep1,keep(D)","cache(MB)","blocks","minrows","maxrows","wallevel","fsync","comp","cachelast","precision","update","status"],"column_meta":[["name",8,32],["created_time",9,8],["ntables",4,4],["vgroups",4,4],["replica",3,2],["quorum",3,2],["days",3,2],["keep0,keep1,keep(D)",8,24],["cache(MB)",4,4],["blocks",4,4],["minrows",4,4],["maxrows",4,4],["wallevel",2,1],["fsync",4,4],["comp",2,1],["cachelast",2,1],["precision",8,3],["update",2,1],["status",8,10]],"data":[["test","2021-08-18 06:01:11.021",10000,4,1,1,10,"3650,3650,3650",16,6,100,4096,1,3000,2,0,"ms",0,"ready"],["log","2021-08-18 05:51:51.065",4,1,1,1,10,"30,30,30",1,3,100,4096,1,3000,2,0,"us",0,"ready"]],"rows":2}
-```
-
- 第一条命令，启动一个运行了 TDengine 的 docker 容器，并且将容器的 6041 端口映射到宿主机的 6041 端口上。
- 第二条命令，通过 RESTful 接口访问 TDengine，这时连接的是本机的 6041 端口，可见连接成功。
-
-注意：在这个示例中，出于方便性考虑，只映射了 RESTful 需要的 6041 端口。如果希望以非 RESTful 方式连接 TDengine 服务，则需要映射从 6030 开始的共 11 个端口（完整的端口情况请参见 [TDengine 2.0 端口说明](https://www.taosdata.com/cn/documentation/faq#port)）。在例子中，挂载本地目录也只是处理了配置文件所在的 /etc/taos 目录，而没有挂载数据存储目录。
-
-2，直接通过 exec 命令，进入到 docker 容器中去做开发。也即，把程序代码放在 TDengine 服务端所在的同一个 Docker 容器中，连接容器本地的 TDengine 服务。
-
-```bash
-$ docker exec -it tdengine /bin/bash
-```
--- a/documentation20/cn/12.taos-sql/02.udf/docs.md
+++ b/documentation20/cn/12.taos-sql/02.udf/docs.md
@@ -53,6 +53,7 @@ TDengine 提供 3 个 UDF 的源代码示例，分别为：
  * numOfOutput：输出数据的个数，对聚合函数来说只能是0或者1。
  * buf：用于在 UDF 与引擎间的状态控制信息传递块。

+其他典型场景，如协方差的计算，即可通过定义聚合UDF的方式实现。

 ### 其他 UDF 函数


--- a/documentation20/cn/12.taos-sql/docs.md
+++ b/documentation20/cn/12.taos-sql/docs.md
@@ -1350,18 +1350,18 @@ TDengine支持针对数据的聚合查询。提供支持的聚合和选择函数
    ```mysql
    SELECT LAST_ROW(field_name) FROM { tb_name | stb_name };
    ```
-功能说明：返回表/超级表的最后一条记录。
-    
-返回结果数据类型：同应用的字段。
-    
-应用字段：所有字段。
-    
-适用于：**表、超级表**。
-    
-限制：LAST_ROW() 不能与 INTERVAL 一起使用。
-    
-说明：在用于超级表时，时间戳完全一样且同为最大的数据行可能有多个，那么会从中随机返回一条，而并不保证多次运行所挑选的数据行必然一致。<br/>
-   <br/>示例：
+    功能说明：返回表/超级表的最后一条记录。
+
+    返回结果数据类型：同应用的字段。
+
+    应用字段：所有字段。
+
+    适用于：**表、超级表**。
+
+    限制：LAST_ROW() 不能与 INTERVAL 一起使用。
+
+    说明：在用于超级表时，时间戳完全一样且同为最大的数据行可能有多个，那么会从中随机返回一条，而并不保证多次运行所挑选的数据行必然一致。<br/>
+    <br/>示例：

   ```mysql
    taos> SELECT LAST_ROW(current) FROM meters;
@@ -1383,51 +1383,51 @@ TDengine支持针对数据的聚合查询。提供支持的聚合和选择函数
    SELECT INTERP(field_name) FROM { tb_name | stb_name } [WHERE where_condition] [ RANGE(timestamp1,timestamp2) ] [EVERY(interval)] [FILL ({ VALUE | PREV | NULL | LINEAR | NEXT})];
    ```

-功能说明：返回表/超级表的指定时间截面指定列的记录值（插值）。
+    功能说明：返回表/超级表的指定时间截面指定列的记录值（插值）。

-返回结果数据类型：同字段类型。
+    返回结果数据类型：同字段类型。

-应用字段：数值型字段。
+    应用字段：数值型字段。

-适用于：**表、超级表、嵌套查询**。
+    适用于：**表、超级表、嵌套查询**。

-说明：
-1）INTERP用于在指定时间断面获取指定列的记录值，如果该时间断面不存在符合条件的行数据，那么会根据 FILL 参数的设定进行插值。
+    说明：
+    1）INTERP用于在指定时间断面获取指定列的记录值，如果该时间断面不存在符合条件的行数据，那么会根据 FILL 参数的设定进行插值。

-2）INTERP的输入数据为指定列的数据，可以通过条件语句（where子句）来对原始列数据进行过滤，如果没有指定过滤条件则输入为全部数据。
+    2）INTERP的输入数据为指定列的数据，可以通过条件语句（where子句）来对原始列数据进行过滤，如果没有指定过滤条件则输入为全部数据。

-3）INTERP的输出时间范围根据RANGE(timestamp1,timestamp2)字段来指定，需满足timestamp1<=timestamp2。其中timestamp1（必选值）为输出时间范围的起始值，即如果timestamp1时刻符合插值条件则timestamp1为输出的第一条记录，timestamp2（必选值）为输出时间范围的结束值，即输出的最后一条记录的timestamp不能大于timestamp2。如果没有指定RANGE，那么满足过滤条件的输入数据中第一条记录的timestamp即为timestamp1，最后一条记录的timestamp即为timestamp2，同样也满足timestamp1 <= timestamp2。
+    3）INTERP的输出时间范围根据RANGE(timestamp1,timestamp2)字段来指定，需满足timestamp1<=timestamp2。其中timestamp1（必选值）为输出时间范围的起始值，即如果timestamp1时刻符合插值条件则timestamp1为输出的第一条记录，timestamp2（必选值）为输出时间范围的结束值，即输出的最后一条记录的timestamp不能大于timestamp2。如果没有指定RANGE，那么满足过滤条件的输入数据中第一条记录的timestamp即为timestamp1，最后一条记录的timestamp即为timestamp2，同样也满足timestamp1 <= timestamp2。

-4）INTERP根据EVERY字段来确定输出时间范围内的结果条数，即从timestamp1开始每隔固定长度的时间（EVERY值）进行插值。如果没有指定EVERY，则默认窗口大小为无穷大，即从timestamp1开始只有一个窗口。
+    4）INTERP根据EVERY字段来确定输出时间范围内的结果条数，即从timestamp1开始每隔固定长度的时间（EVERY值）进行插值。如果没有指定EVERY，则默认窗口大小为无穷大，即从timestamp1开始只有一个窗口。

-5）INTERP根据FILL字段来决定在每个符合输出条件的时刻如何进行插值，如果没有FILL字段则默认不插值，即输出为原始记录值或不输出（原始记录不存在）。
+    5）INTERP根据FILL字段来决定在每个符合输出条件的时刻如何进行插值，如果没有FILL字段则默认不插值，即输出为原始记录值或不输出（原始记录不存在）。

-6）INTERP只能在一个时间序列内进行插值，因此当作用于超级表时必须跟group by tbname一起使用，当作用嵌套查询外层时内层子查询不能含GROUP BY信息。
+    6）INTERP只能在一个时间序列内进行插值，因此当作用于超级表时必须跟group by tbname一起使用，当作用嵌套查询外层时内层子查询不能含GROUP BY信息。

-7）INTERP的插值结果不受ORDER BY timestamp的影响，ORDER BY timestamp只影响输出结果的排序。
+    7）INTERP的插值结果不受ORDER BY timestamp的影响，ORDER BY timestamp只影响输出结果的排序。

-SQL示例：
+  SQL示例：

-    1) 单点线性插值
-   ```mysql
-    taos> SELECT INTERP(*) FROM t1 RANGE('2017-7-14 18:40:00'，'2017-7-14 18:40:00') FILL(LINEAR);
-   ```
-    2) 在2017-07-14 18:00:00到2017-07-14 19:00:00间每隔5秒钟进行取值(不插值)
-   ```mysql
-    taos> SELECT INTERP(*) FROM t1 RANGE('2017-7-14 18:00:00'，'2017-7-14 19:00:00') EVERY(5s);
-   ```
-    3) 在2017-07-14 18:00:00到2017-07-14 19:00:00间每隔5秒钟进行线性插值
-   ```mysql
-     taos> SELECT INTERP(*) FROM t1 RANGE('2017-7-14 18:00:00'，'2017-7-14 19:00:00') EVERY(5s) FILL(LINEAR);
-   ```
-   4.在所有时间范围内每隔5秒钟进行向后插值
-   ```mysql
-     taos> SELECT INTERP(*) FROM t1 EVERY(5s) FILL(NEXT);
-   ```
-   5.根据2017-07-14 17:00:00到2017-07-14 20:00:00间的数据进行从2017-07-14 18:00:00到2017-07-14 19:00:00间每隔5秒钟进行线性插值
-   ```mysql
-     taos> SELECT INTERP(*) FROM t1 where ts >= '2017-07-14 17:00:00' and ts <= '2017-07-14 20:00:00' RANGE('2017-7-14 18:00:00'，'2017-7-14 19:00:00') EVERY(5s) FILL(LINEAR);
-   ```
+      1) 单点线性插值
+     ```mysql
+      taos> SELECT INTERP(*) FROM t1 RANGE('2017-7-14 18:40:00'，'2017-7-14 18:40:00') FILL(LINEAR);
+     ```
+      2) 在2017-07-14 18:00:00到2017-07-14 19:00:00间每隔5秒钟进行取值(不插值)
+     ```mysql
+      taos> SELECT INTERP(*) FROM t1 RANGE('2017-7-14 18:00:00'，'2017-7-14 19:00:00') EVERY(5s);
+     ```
+      3) 在2017-07-14 18:00:00到2017-07-14 19:00:00间每隔5秒钟进行线性插值
+     ```mysql
+       taos> SELECT INTERP(*) FROM t1 RANGE('2017-7-14 18:00:00'，'2017-7-14 19:00:00') EVERY(5s) FILL(LINEAR);
+     ```
+     4.在所有时间范围内每隔5秒钟进行向后插值
+     ```mysql
+       taos> SELECT INTERP(*) FROM t1 EVERY(5s) FILL(NEXT);
+     ```
+     5.根据2017-07-14 17:00:00到2017-07-14 20:00:00间的数据进行从2017-07-14 18:00:00到2017-07-14 19:00:00间每隔5秒钟进行线性插值
+     ```mysql
+       taos> SELECT INTERP(*) FROM t1 where ts >= '2017-07-14 17:00:00' and ts <= '2017-07-14 20:00:00' RANGE('2017-7-14 18:00:00'，'2017-7-14 19:00:00') EVERY(5s) FILL(LINEAR);
+     ```
    

 - **INTERP  [2.3.1之前的版本]** 
@@ -1436,15 +1436,15 @@ SQL示例：
    SELECT INTERP(field_name) FROM { tb_name | stb_name } WHERE ts='timestamp' [FILL ({ VALUE | PREV | NULL | LINEAR | NEXT})];
    ```

-功能说明：返回表/超级表的指定时间截面、指定字段的记录。
+    功能说明：返回表/超级表的指定时间截面、指定字段的记录。

-返回结果数据类型：同字段类型。
+    返回结果数据类型：同字段类型。

-应用字段：数值型字段。
+    应用字段：数值型字段。

-适用于：**表、超级表**。
+    适用于：**表、超级表**。

-说明：（从 2.0.15.0 版本开始新增此函数） <br/>1）INTERP 必须指定时间断面，如果该时间断面不存在直接对应的数据，那么会根据 FILL 参数的设定进行插值。此外，条件语句里面可附带筛选条件，例如标签、tbname。<br/>2）INTERP 查询要求查询的时间区间必须位于数据集合（表）的所有记录的时间范围之内。如果给定的时间戳位于时间范围之外，即使有插值指令，仍然不返回结果。<br/>3）单个 INTERP 函数查询只能够针对一个时间点进行查询，如果需要返回等时间间隔的断面数据，可以通过 INTERP 配合 EVERY 的方式来进行查询处理（而不是使用 INTERVAL），其含义是每隔固定长度的时间进行插值。<br/>    
+    说明：（从 2.0.15.0 版本开始新增此函数） <br/>1）INTERP 必须指定时间断面，如果该时间断面不存在直接对应的数据，那么会根据 FILL 参数的设定进行插值。此外，条件语句里面可附带筛选条件，例如标签、tbname。<br/>2）INTERP 查询要求查询的时间区间必须位于数据集合（表）的所有记录的时间范围之内。如果给定的时间戳位于时间范围之外，即使有插值指令，仍然不返回结果。<br/>3）单个 INTERP 函数查询只能够针对一个时间点进行查询，如果需要返回等时间间隔的断面数据，可以通过 INTERP 配合 EVERY 的方式来进行查询处理（而不是使用 INTERVAL），其含义是每隔固定长度的时间进行插值。<br/>    
    示例：
    
   ```mysql
@@ -1455,7 +1455,7 @@ SQL示例：
    Query OK, 1 row(s) in set (0.002652s)
   ```

-如果给定的时间戳无对应的数据，在不指定插值生成策略的情况下，不会返回结果，如果指定了插值策略，会根据插值策略返回结果。
+    如果给定的时间戳无对应的数据，在不指定插值生成策略的情况下，不会返回结果，如果指定了插值策略，会根据插值策略返回结果。

   ```mysql
    taos> SELECT INTERP(*) FROM meters WHERE tbname IN ('d636') AND ts='2017-7-14 18:40:00.005';
@@ -1468,7 +1468,7 @@ SQL示例：
    Query OK, 1 row(s) in set (0.003056s)
   ```

-如下所示代码表示在时间区间 `['2017-7-14 18:40:00', '2017-7-14 18:40:00.014']` 中每隔 5 毫秒 进行一次断面计算。
+    如下所示代码表示在时间区间 `['2017-7-14 18:40:00', '2017-7-14 18:40:00.014']` 中每隔 5 毫秒 进行一次断面计算。

   ```mysql
    taos> SELECT INTERP(current) FROM d636 WHERE ts>='2017-7-14 18:40:00' AND ts<='2017-7-14 18:40:00.014' EVERY(5a);
@@ -1577,8 +1577,6 @@ SQL示例：
      支持 +、-、*、/ 运算，如 ceil(col1) + ceil(col2)。
      只能与普通列，选择（Selection）、投影（Projection）函数一起使用，不能与聚合（Aggregation）函数一起使用。
      该函数可以应用在普通表和超级表上。
-
-    支持版本：指定计算算法的功能从 2.2.0.x 版本开始，2.2.0.0 之前的版本不支持指定使用算法的功能。
  
 - **FLOOR**
    ```mysql
@@ -1653,7 +1651,7 @@ SELECT COUNT(*) FROM temp_table INTERVAL(1D) SLIDING(2D)

 使用整数（布尔值）或字符串来标识产生记录时候设备的状态量。产生的记录如果具有相同的状态量数值则归属于同一个状态窗口，数值改变后该窗口关闭。如下图所示，根据状态量确定的状态窗口分别是[2019-04-28 14:22:07，2019-04-28 14:22:10]和[2019-04-28 14:22:11，2019-04-28 14:22:12]两个。（状态窗口暂不支持对超级表使用）

-![时间窗口示意图](../images/sql/timewindow-2.png)
+![时间窗口示意图](../images/sql/timewindow-3.png)


 使用STATE_WINDOW来确定状态窗口划分的列。例如：
@@ -1665,7 +1663,7 @@ SELECT COUNT(*), FIRST(ts), status FROM temp_tb_1 STATE_WINDOW(status)

 会话窗口根据记录的时间戳主键的值来确定是否属于同一个会话。如下图所示，如果设置时间戳的连续的间隔小于等于12秒，则以下6条记录构成2个会话窗口，分别是：[2019-04-28 14:22:10，2019-04-28 14:22:30]和[2019-04-28 14:23:10，2019-04-28 14:23:30]。因为2019-04-28 14:22:30与2019-04-28 14:23:10之间的时间间隔是40秒，超过了连续时间间隔（12秒）。

-![时间窗口示意图](../images/sql/timewindow-3.png)
+![时间窗口示意图](../images/sql/timewindow-2.png)

 在tol_value时间间隔范围内的结果都认为归属于同一个窗口，如果连续的两条记录的时间超过tol_val，则自动开启下一个窗口。（会话窗口暂不支持对超级表使用）


--- a/documentation20/en/02.getting-started/01.docker/docs.md
+++ b/documentation20/en/02.getting-started/01.docker/docs.md
@@ -15,22 +15,34 @@ $ docker -v
 Docker version 20.10.3, build 48d30b5
 ```

-## Running TDengine in a Docker container
+## Using Docker to run TDengine

-1, Use the command to pull the TDengine image and make it run in the background.
+### running TDengine server inside Docker

 ```bash
-$  docker run -d --name tdengine tdengine/tdengine
-7760c955f225d72e9c1ec5a4cef66149a7b94dae7598b11eb392138877e7d292
+$ docker run -d -p 6030-6041:6030-6041 -p 6030-6041:6030-6041/udp tdengine/tdengine
+526aa188da767ae94b244226a2b2eec2b5f17dd8eff592893d9ec0cd0f3a1ccd
+```
+
+This command starts a docker container with TDengine server running and maps the container's ports from 6030 to 6041 to the host's ports from 6030 to 6041. If the host is already running TDengine server and occupying the same port(s), you need to map the container's port to a different unused port segment. (Please see [TDengine 2.0 Port Description](https://www.taosdata.com/en/documentation/faq#port) for details). In order to support TDengine clients accessing TDengine server services, both TCP and UDP ports need to be open.
+
+- **docker run**: Run a container via Docker
+- **-d**: put the container run in the background
+- **-p**: specify the port(s) to map. Note: If you do not use port mapping, you can still go inside the Docker container to access TDengine services or develop your application, but you cannot provide services outside the container
+- **tdengine/tdengine**: the official TDengine published application image that is pulled
+- **526aa188da767ae94b244226a2b2eec2b5f17dd8eff592893d9ec0cd0f3a1ccd**: The long character returned is the container ID, and we can also view the corresponding container by its container ID
+
+Further, you can also use the `docker run` command to start the docker container running TDengine server, and use the `--name` command line parameter to name the container tdengine, use `--hostname` to specify the hostname as tdengine-server, and use `-v` to mount the local directory (-v) to synchronize the data inside the host and the container to prevent data loss after the container is deleted.
+
+```
+$ docker run -d --name tdengine --hostname="tdengine-server" -v ~/work/taos/log:/var/log/taos -v ~/work/taos/data:/var/lib/taos  -p 6030-6041:6030-6041 -p 6030-6041:6030-6041/udp tdengine/tdengine
 ```

- **docker run**: Running a container via Docker
- **--name tdengine**: Set the container name, we can see the corresponding container by the container name
- **-d**: Keeping containers running in the background
- **tdengine/tdengine**: Pulled from the official TDengine published application image
- **7760c955f225d72e9c1ec5a4cef66149a7b94dae7598b11eb392138877e7d292**: The long character returned is the container ID, and we can also view the corresponding container by its container ID
+- **--name tdengine**: set the container name, we can access the corresponding container by container name
+- **--hostnamename=tdengine-server**: set the hostname of the Linux system inside the container, we can map the hostname and IP to solve the problem that the container IP may change.
+- **-v**: Set the host file directory to be mapped to the inner container directory to avoid data loss after the container is deleted.

-2, Verify that the container is running correctly.
+### Use the `docker ps` command to verify that the container is running correctly

 ```bash
 $ docker ps
@@ -38,30 +50,30 @@ CONTAINER ID   IMAGE               COMMAND   CREATED          STATUS          ·
 c452519b0f9b   tdengine/tdengine   "taosd"   14 minutes ago   Up 14 minutes   ···
 ```

- **docker ps**: Lists information about all containers that are in running state.
- **CONTAINER ID**: Container ID.
- **IMAGE**: The mirror used.
- **COMMAND**: The command to run when starting the container.
- **CREATED**: The time when the container was created.
- **STATUS**: The container status. Up means running.
+- **docker ps**: list all containers in running state.
+- **CONTAINER ID**: container ID.
+- **IMAGE**: the image used.
+- **COMMAND**: the command to run when starting the container.
+- **CREATED**: container creation time.
+- **STATUS**: container status. UP means running.

-3, Go inside the Docker container and use TDengine.
+### Enter the docker container to do development via the `docker exec` COMMAND

 ```bash
 $ docker exec -it tdengine /bin/bash
-root@c452519b0f9b:~/TDengine-server-2.0.20.13# 
+root@tdengine-server:~/TDengine-server-2.0.20.13# 
 ```

- **docker exec**: Enter the container via the docker exec command; if you exit, the container will not stop.
- **-i**: Enter the interactive mode.
- **-t**: Specify a terminal.
- **c452519b0f9b**: The container ID, which needs to be modified according to the value returned by the docker ps command.
- **/bin/bash**: Load the container and run bash to interact with it.
+- **docker exec**: Enter the container by `docker exec` command, if exited, the container will not stop.
+- **-i**: use interactive mode.
+- **-t**: specify a terminal.
+- **tdengine**: container name, needs to be changed according to the value returned by the docker ps command.
+- **/bin/bash**: load the container and run bash to interact with it.

-4, After entering the container, execute the taos shell client program.
+After entering the container, execute the taos shell client program.

 ```bash
-$ root@c452519b0f9b:~/TDengine-server-2.0.20.13# taos
+root@tdengine-server:~/TDengine-server-2.0.20.13# taos

 Welcome to the TDengine shell from Linux, Client Version:2.0.20.13
 Copyright (c) 2020 by TAOS Data, Inc. All rights reserved.
@@ -69,23 +81,94 @@ Copyright (c) 2020 by TAOS Data, Inc. All rights reserved.
 taos> 
 ```

-The TDengine terminal successfully connects to the server and prints out a welcome message and version information. If it fails, an error message is printed.
+The TDengine shell successfully connects to the server and prints out a welcome message and version information. If it fails, an error message is printed.

-In the TDengine terminal, you can create/delete databases, tables, super tables, etc., and perform insert and query operations via SQL commands. For details, you can refer to [TAOS SQL guide](https://www.taosdata.com/en/documentation/taos-sql).
+In the TDengine shell, you can create/delete databases, tables, super tables, etc., and perform insert and query operations via SQL commands. For details, please refer to the [TAOS SQL documentation](https://www.taosdata.com/en/documentation/taos-sql).

-## Learn more about TDengine with taosdemo
+### Accessing TDengine server inside Docker container from the host side

-1, Following the above steps, exit the TDengine terminal program first.
+After starting the TDengine Docker container with the correct port mapped with the -p command line parameter, you can access the TDengine running inside the Docker container from the host side using the taos shell command.
+
+```
+$ taos
+
+Welcome to the TDengine shell from Linux, Client Version:2.0.22.3
+Copyright (c) 2020 by TAOS Data, Inc. All rights reserved.
+
+taos>
+```
+
+You can also access the TDengine server inside the Docker container using `curl` command from the host side through the RESTful port.

-```bash
-$ taos> q
-root@c452519b0f9b:~/TDengine-server-2.0.20.13#
 ```
+$ curl -u root:taosdata -d 'show databases' 127.0.0.1:6041/rest/sql
+{"status":"succ","head":["name","created_time","ntables","vgroups","replica","quorum","days","keep0,keep1,keep(D)","cache(MB)","blocks","minrows","maxrows","wallevel","fsync","comp","cachelast","precision","update","status"],"column_meta":[["name",8,32],["created_time",9,8],["ntables",4,4],["vgroups",4,4],["replica",3,2],["quorum",3,2],["days",3,2],["keep0,keep1,keep(D)",8,24],["cache(MB)",4,4],["blocks",4,4],["minrows",4,4],["maxrows",4,4],["wallevel",2,1],["fsync",4,4],["comp",2,1],["cachelast",2,1],["precision",8,3],["update",2,1],["status",8,10]],"data":[["test","2021-08-18 06:01:11.021",10000,4,1,1,10,"3650,3650,3650",16,6,100,4096,1,3000,2,0,"ms",0,"ready"],["log","2021-08-18 05:51:51.065",4,1,1,1,10,"30,30,30",1,3,100,4096,1,3000,2,0,"us",0,"ready"]],"rows":2}
+```
+
+This command accesses the TDengine server through the RESTful interface, which connects to port 6041 on the local machine, so the connection is successful.
+
+TDengine RESTful interface details can be found in the [official documentation](https://www.taosdata.com/en/documentation/connector#restful).
+
+
+### Running TDengine server and taosAdapter with a Docker container
+
+Docker containers of TDegnine version 2.4.0.0 and later include a component named `taosAdapter`, which supports data writing and querying capabilities to the TDengine server through the RESTful interface and provides the data ingestion interfaces compatible with InfluxDB/OpenTSDB. Allows seamless migration of InfluxDB/OpenTSDB applications to access TDengine.

-2, Execute taosdemo from the command line interface.
+Note: If taosAdapter is running inside the container, you need to add mapping to other additional ports as needed, please refer to [taosAdapter documentation](https://github.com/taosdata/taosadapter/blob/develop/README.md) for the default port number and modification methods for the specific purpose.
+
+Running TDengine version 2.4.0.0 image with docker.
+
+```
+$ docker run -d --name tdengine-taosa -p 6030-6049:6030-6049 -p 6030-6049:6030-6049/udp tdengine/tdengine:2.4.0.0
+```
+
+Verify that the RESTful interface taosAdapter provides working using the `curl` command.
+```
+$ curl -H 'Authorization: Basic cm9vdDp0YW9zZGF0YQ==' -d 'show databases;' 127.0.0.1:6041/rest/sql
+
+{"status":"succ","head":["name","created_time","ntables","vgroups","replica","quorum","days","keep","cache(MB)","blocks","minrows","maxrows","wallevel","fsync","comp","cachelast","precision","update","status"],"column_meta":[["name",8,32],["created_time",9,8],["ntables",4,4],["vgroups",4,4],["replica",3,2],["quorum",3,2],["days",3,2],["keep",8,24],["cache(MB)",4,4],["blocks",4,4],["minrows",4,4],["maxrows",4,4],["wallevel",2,1],["fsync",4,4],["comp",2,1],["cachelast",2,1],["precision",8,3],["update",2,1],["status",8,10]],"data":[["log","2021-12-28 09:18:55.765",10,1,1,1,10,"30",1,3,100,4096,1,3000,2,0,"us",0,"ready"]],"rows":1}
+```

+taosAdapter supports multiple data collection agents (e.g. Telegraf, StatsD, collectd, etc.), here only demonstrate how StasD is simulated to write data, and the command is executed from the host side as follows.
+```
+$ echo "foo:1|c" | nc -u -w0 127.0.0.1 6044
+```
+
+Then you can use the taos shell to query the taosAdapter automatically created database statsd and the contents of the super table foo.
+```
+taos> show databases;
+              name              |      created_time       |   ntables   |   vgroups   | replica | quorum |  days  |           keep           |  cache(MB)  |   blocks    |   minrows   |   maxrows   | wallevel |    fsync    | comp | cachelast | precision | update |   status   |
+====================================================================================================================================================================================================================================================================================
+ log                            | 2021-12-28 09:18:55.765 |          12 |           1 |       1 |      1 |     10 | 30                       |           1 |           3 |         100 |        4096 |        1 |        3000 |    2 |         0 | us        |      0 | ready      |
+ statsd                         | 2021-12-28 09:21:48.841 |           1 |           1 |       1 |      1 |     10 | 3650                     |          16 |           6 |         100 |        4096 |        1 |        3000 |    2 |         0 | ns        |      2 | ready      |
+Query OK, 2 row(s) in set (0.002112s)
+
+taos> use statsd;
+Database changed.
+
+taos> show stables;
+              name              |      created_time       | columns |  tags  |   tables    |
+============================================================================================
+ foo                            | 2021-12-28 09:21:48.894 |       2 |      1 |           1 |
+Query OK, 1 row(s) in set (0.001160s)
+
+taos> select * from foo;
+              ts               |         value         |         metric_type          |
+=======================================================================================
+ 2021-12-28 09:21:48.840820836 |                     1 | counter                      |
+Query OK, 1 row(s) in set (0.001639s)
+
+taos>
+```
+
+You can see that the simulation data has been written to TDengine.
+
+
+### Application example: write data to TDengine server in Docker container using taosdemo on the host
+
+1, execute taosdemo in the host command line interface to write data to the TDengine server in the Docker container
 ```bash
-root@c452519b0f9b:~/TDengine-server-2.0.20.13# taosdemo
+$ taosdemo

 taosdemo is simulating data generated by power equipments monitoring...

@@ -217,27 +300,3 @@ tdengine
 - **docker stop**: Stop the specified running docker image with docker stop.
 - **tdengine**: The name of the container.

-## TDengine connected in Docker during programming development
-
-There are two ideas for connecting from outside of Docker to use TDengine services running inside a Docker container:
-
-1, By port mapping (-p), the open network port inside the container is mapped to the specified port of the host. By mounting the local directory (-v), you can synchronize the data inside the host and the container to prevent data loss after the container is deleted.
-
-```bash
-$ docker run -d -v /etc/taos:/etc/taos -P 6041:6041 tdengine/tdengine
-526aa188da767ae94b244226a2b2eec2b5f17dd8eff592893d9ec0cd0f3a1ccd
-
-$ curl -u root:taosdata -d 'show databases' 127.0.0.1:6041/rest/sql
-{"status":"succ","head":["name","created_time","ntables","vgroups","replica","quorum","days","keep0,keep1,keep(D)","cache(MB)","blocks","minrows","maxrows","wallevel","fsync","comp","cachelast","precision","update","status"],"column_meta":[["name",8,32],["created_time",9,8],["ntables",4,4],["vgroups",4,4],["replica",3,2],["quorum",3,2],["days",3,2],["keep0,keep1,keep(D)",8,24],["cache(MB)",4,4],["blocks",4,4],["minrows",4,4],["maxrows",4,4],["wallevel",2,1],["fsync",4,4],["comp",2,1],["cachelast",2,1],["precision",8,3],["update",2,1],["status",8,10]],"data":[["test","2021-08-18 06:01:11.021",10000,4,1,1,10,"3650,3650,3650",16,6,100,4096,1,3000,2,0,"ms",0,"ready"],["log","2021-08-18 05:51:51.065",4,1,1,1,10,"30,30,30",1,3,100,4096,1,3000,2,0,"us",0,"ready"]],"rows":2}
-```
-
- The first command starts a docker container with TDengine running and maps the 6041 port of the container to port 6041 of the host.
- The second command, accessing TDengine through the RESTful interface, connects to port 6041 on the local machine, so the connection is successful.
-
-Note: In this example, for convenience reasons, only port 6041 is mapped, which is required for RESTful. If you wish to connect to the TDengine service in a non-RESTful manner, you will need to map a total of 11 ports starting at 6030. In the example, mounting the local directory also only deals with the /etc/taos directory where the configuration files are located, but not the data storage directory.
-
-2, Go directly to the docker container to do development via the exec command. That is, put the program code in the same Docker container where the TDengine server is located and connect to the TDengine service local to the container.
-
-```bash
-$ docker exec -it tdengine /bin/bash
-```
--- a/packaging/release.sh
+++ b/packaging/release.sh
@@ -3,7 +3,7 @@
 # Generate the deb package for ubuntu, or rpm package for centos, or tar.gz package for other linux os

 set -e
-set -x
+#set -x

 # release.sh  -v [cluster | edge]
 #             -c [aarch32 | aarch64 | x64 | x86 | mips64 ...]

--- a/packaging/tools/makepkg.sh
+++ b/packaging/tools/makepkg.sh
@@ -36,11 +36,11 @@ if [ -d ${top_dir}/src/kit/taos-tools/packaging/deb ]; then
    [ -z "$taos_tools_ver" ] && taos_tools_ver="0.1.0"

    taostools_ver=$(git describe --tags|sed -e 's/ver-//g'|awk -F '-' '{print $1}')
-    taostools_install_dir="${release_dir}/taos-tools-${taostools_ver}"
+    taostools_install_dir="${release_dir}/taosTools-${taostools_ver}"

    cd ${curr_dir}
 else
-    taostools_install_dir="${release_dir}/taos-tools-${version}"
+    taostools_install_dir="${release_dir}/taosTools-${version}"
 fi

 # Directories and files

--- a/src/balance/src/bnMain.c
+++ b/src/balance/src/bnMain.c
@@ -567,7 +567,7 @@ void bnCheckStatus() {
  while (1) {
    pIter = mnodeGetNextDnode(pIter, &pDnode);
    if (pDnode == NULL) break;
-    if (tsAccessSquence - pDnode->lastAccess > 3) {
+    if (tsAccessSquence - pDnode->lastAccess > tsOfflineInterval) {
      if (pDnode->status != TAOS_DN_STATUS_DROPPING && pDnode->status != TAOS_DN_STATUS_OFFLINE) {
        pDnode->status = TAOS_DN_STATUS_OFFLINE;
        pDnode->offlineReason = TAOS_DN_OFF_STATUS_MSG_TIMEOUT;

--- a/src/client/src/tscGlobalmerge.c
+++ b/src/client/src/tscGlobalmerge.c
@@ -902,7 +902,7 @@ SSDataBlock* doGlobalAggregate(void* param, bool* newgroup) {

      // not belongs to the same group, return the result of current group;
      setInputDataBlock(pOperator, pAggInfo->binfo.pCtx, pAggInfo->pExistBlock, TSDB_ORDER_ASC);
-      updateOutputBuf(&pAggInfo->binfo, &pAggInfo->bufCapacity, pAggInfo->pExistBlock->info.rows);
+      updateOutputBuf(&pAggInfo->binfo, &pAggInfo->bufCapacity, pAggInfo->pExistBlock->info.rows, pOperator->pRuntimeEnv);

      { // reset output buffer
        for(int32_t j = 0; j < pOperator->numOfOutput; ++j) {
@@ -954,7 +954,7 @@ SSDataBlock* doGlobalAggregate(void* param, bool* newgroup) {

    // not belongs to the same group, return the result of current group
    setInputDataBlock(pOperator, pAggInfo->binfo.pCtx, pBlock, TSDB_ORDER_ASC);
-    updateOutputBuf(&pAggInfo->binfo, &pAggInfo->bufCapacity, pBlock->info.rows * pAggInfo->resultRowFactor);
+    updateOutputBuf(&pAggInfo->binfo, &pAggInfo->bufCapacity, pBlock->info.rows * pAggInfo->resultRowFactor, pOperator->pRuntimeEnv);

    doExecuteFinalMerge(pOperator, pOperator->numOfOutput, pBlock);
    savePrevOrderColumns(pAggInfo->currentGroupColData, pAggInfo->groupColumnList, pBlock, 0, &pAggInfo->hasGroupColData);

--- a/src/client/src/tscProfile.c
+++ b/src/client/src/tscProfile.c
@@ -170,6 +170,16 @@ void tscAddIntoStreamList(SSqlStream *pStream) {
  STscObj *       pObj = pStream->pSql->pTscObj;

  pthread_mutex_lock(&pObj->mutex);
+  //check if newly added stream node is present
+  //in the streamList to prevent loop in the list
+  SSqlStream *iter = pObj->streamList;
+  while (iter) {
+    if (pStream == iter) {
+      pthread_mutex_unlock(&pObj->mutex);
+      return;
+    }
+    iter = iter->next;
+  }

  pStream->next = pObj->streamList;
  if (pObj->streamList) pObj->streamList->prev = pStream;

--- a/src/client/src/tscSQLParser.c
+++ b/src/client/src/tscSQLParser.c
@@ -433,7 +433,7 @@ int32_t readFromFile(char *name, uint32_t *len, void **buf) {
    return TSDB_CODE_TSC_OUT_OF_MEMORY;
  }

-  int fd = open(name, O_RDONLY);
+  int fd = open(name, O_RDONLY | O_BINARY);
  if (fd < 0) {
    tscError("open file %s failed, error:%s", name, strerror(errno));
    tfree(*buf);
@@ -1084,8 +1084,9 @@ static int32_t addPrimaryTsColumnForTimeWindowQuery(SQueryInfo* pQueryInfo, SSql
  uint64_t uid = tscExprGet(pQueryInfo, 0)->base.uid;

  int32_t  tableIndex = COLUMN_INDEX_INITIAL_VAL;
+  STableMetaInfo* pTableMetaInfo = NULL;
  for (int32_t i = 0; i < pQueryInfo->numOfTables; ++i) {
-    STableMetaInfo* pTableMetaInfo = tscGetMetaInfo(pQueryInfo, i);
+    pTableMetaInfo = tscGetMetaInfo(pQueryInfo, i);
    if (pTableMetaInfo->pTableMeta->id.uid == uid) {
      tableIndex = i;
      break;
@@ -1097,7 +1098,11 @@ static int32_t addPrimaryTsColumnForTimeWindowQuery(SQueryInfo* pQueryInfo, SSql
  }

  SSchema s = {.bytes = TSDB_KEYSIZE, .type = TSDB_DATA_TYPE_TIMESTAMP, .colId = PRIMARYKEY_TIMESTAMP_COL_INDEX};
-  tstrncpy(s.name, aAggs[TSDB_FUNC_TS].name, sizeof(s.name));
+  if (pTableMetaInfo) {
+    tstrncpy(s.name, pTableMetaInfo->pTableMeta->schema[PRIMARYKEY_TIMESTAMP_COL_INDEX].name, sizeof(s.name));
+  } else {
+    tstrncpy(s.name, aAggs[TSDB_FUNC_TS].name, sizeof(s.name));
+  }  

  SColumnIndex index = {tableIndex, PRIMARYKEY_TIMESTAMP_COL_INDEX};
  tscAddFuncInSelectClause(pQueryInfo, 0, TSDB_FUNC_TS, &index, &s, TSDB_COL_NORMAL, 0);
@@ -1392,7 +1397,7 @@ int32_t parseSlidingClause(SSqlCmd* pCmd, SQueryInfo* pQueryInfo, SStrToken* pSl
  const char* msg1 = "sliding value no larger than the interval value";
  const char* msg2 = "sliding value can not less than 1% of interval value";
  const char* msg3 = "does not support sliding when interval is natural month/year";
-  const char* msg4 = "sliding not support for interp query";  
+  const char* msg4 = "sliding not support for interp query";

  const static int32_t INTERVAL_SLIDING_FACTOR = 100;

@@ -1410,7 +1415,7 @@ int32_t parseSlidingClause(SSqlCmd* pCmd, SQueryInfo* pQueryInfo, SStrToken* pSl
  if (interpQuery) {
    return invalidOperationMsg(tscGetErrorMsgPayload(pCmd), msg4);
  }
-  
+
  if (pInterval->intervalUnit == 'n' || pInterval->intervalUnit == 'y') {
    return invalidOperationMsg(tscGetErrorMsgPayload(pCmd), msg3);
  }
@@ -2668,6 +2673,7 @@ int32_t addExprAndResultField(SSqlCmd* pCmd, SQueryInfo* pQueryInfo, int32_t col
  const char* msg14 = "third parameter algorithm must be 'default' or 't-digest'";
  const char* msg15 = "parameter is out of range [1, 1000]";
  const char* msg16 = "elapsed duration should be greater than or equal to database precision";
+  const char* msg17 = "elapsed/twa should not be used in nested query if inner query has group by clause";

  switch (functionId) {
    case TSDB_FUNC_COUNT: {
@@ -2727,7 +2733,7 @@ int32_t addExprAndResultField(SSqlCmd* pCmd, SQueryInfo* pQueryInfo, int32_t col

      memset(pExpr->base.aliasName, 0, tListLen(pExpr->base.aliasName));
      getColumnName(pItem, pExpr->base.aliasName, pExpr->base.token,sizeof(pExpr->base.aliasName) - 1);
-      
+
      SColumnList list = createColumnList(1, index.tableIndex, index.columnIndex);
      if (finalResult) {
        int32_t numOfOutput = tscNumOfFields(pQueryInfo);
@@ -2792,6 +2798,17 @@ int32_t addExprAndResultField(SSqlCmd* pCmd, SQueryInfo* pQueryInfo, int32_t col
        }
      }

+      //for timeline related aggregation function like elapsed and twa, groupby in subquery is not allowed
+      //as calculation result is meaningless by mixing different childtables(timelines) results.
+      if ((functionId == TSDB_FUNC_ELAPSED || functionId == TSDB_FUNC_TWA) && pQueryInfo->pUpstream != NULL) {
+        size_t numOfUpstreams = taosArrayGetSize(pQueryInfo->pUpstream);
+        for (int32_t i = 0; i < numOfUpstreams; ++i) {
+          SQueryInfo* pSub = taosArrayGetP(pQueryInfo->pUpstream, i);
+          if (pSub->groupbyExpr.numOfGroupCols > 0) {
+            return invalidOperationMsg(tscGetErrorMsgPayload(pCmd), msg17);
+          }
+        }
+      }

      STableComInfo info = tscGetTableInfo(pTableMetaInfo->pTableMeta);

@@ -2852,6 +2869,13 @@ int32_t addExprAndResultField(SSqlCmd* pCmd, SQueryInfo* pQueryInfo, int32_t col
        char val[8] = {0};

        int64_t tickPerSec = 0;
+        char *exprToken = tcalloc(pParamElem[1].pNode->exprToken.n + 1, sizeof(char));
+        memcpy(exprToken, pParamElem[1].pNode->exprToken.z, pParamElem[1].pNode->exprToken.n);
+        if (pParamElem[1].pNode->exprToken.type == TK_NOW || strstr(exprToken, "now")) {
+          return invalidOperationMsg(tscGetErrorMsgPayload(pCmd), msg2);
+        }
+        tfree(exprToken);
+
        if ((TSDB_DATA_TYPE_NULL == pParamElem[1].pNode->value.nType) || tVariantDump(&pParamElem[1].pNode->value, (char*) &tickPerSec, TSDB_DATA_TYPE_BIGINT, true) < 0) {
          return TSDB_CODE_TSC_INVALID_OPERATION;
        }
@@ -2866,7 +2890,7 @@ int32_t addExprAndResultField(SSqlCmd* pCmd, SQueryInfo* pQueryInfo, int32_t col
          return invalidOperationMsg(tscGetErrorMsgPayload(pCmd), msg10);
        } else if (tickPerSec <= 0) {
          return invalidOperationMsg(tscGetErrorMsgPayload(pCmd), msg16);
-        } 
+        }

        tscExprAddParams(&pExpr->base, (char*) &tickPerSec, TSDB_DATA_TYPE_BIGINT, LONG_BYTES);
        if (functionId == TSDB_FUNC_DERIVATIVE) {
@@ -4906,14 +4930,14 @@ static int32_t validateNullExpr(tSqlExpr* pExpr, STableMeta* pTableMeta, int32_t
    if (IS_VAR_DATA_TYPE(pSchema[index].type) || pSchema[index].type == TSDB_DATA_TYPE_JSON) {
      return TSDB_CODE_SUCCESS;
    }
-    
+
    char *v = strndup(pRight->exprToken.z, pRight->exprToken.n);
    int32_t len = strRmquote(v, pRight->exprToken.n);
    if (len > 0) {
      uint32_t type = 0;
      tGetToken(v, &type);

-      if (type == TK_NULL) {        
+      if (type == TK_NULL) {
        free(v);
        return invalidOperationMsg(msgBuf, msg);
      }
@@ -5229,7 +5253,7 @@ static int32_t handleExprInQueryCond(SSqlCmd* pCmd, SQueryInfo* pQueryInfo, tSql
      }
    }

-    if (pRight != NULL && (pRight->tokenId == TK_ID || pRight->tokenId == TK_ARROW)) {  // join on tag columns for stable query
+    if (joinQuery && pRight != NULL && (pRight->tokenId == TK_ID || pRight->tokenId == TK_ARROW)) {  // join on tag columns for stable query
      if (!validateJoinExprNode(pCmd, pQueryInfo, *pExpr, &index)) {
        return TSDB_CODE_TSC_INVALID_OPERATION;
      }
@@ -7265,6 +7289,7 @@ int32_t validateDNodeConfig(SMiscInfo* pOptions) {
  const int tokenMonitor = 3;
  const int tokenDebugFlag = 4;
  const int tokenDebugFlagEnd = 20;
+  const int tokenOfflineInterval = 21;
  const SDNodeDynConfOption cfgOptions[] = {
      {"resetLog", 8},    {"resetQueryCache", 15},  {"balance", 7},     {"monitor", 7},
      {"debugFlag", 9},   {"monDebugFlag", 12},     {"vDebugFlag", 10}, {"mDebugFlag", 10},
@@ -7272,6 +7297,7 @@ int32_t validateDNodeConfig(SMiscInfo* pOptions) {
      {"uDebugFlag", 10}, {"tsdbDebugFlag", 13},    {"sDebugflag", 10}, {"rpcDebugFlag", 12},
      {"dDebugFlag", 10}, {"mqttDebugFlag", 13},    {"wDebugFlag", 10}, {"tmrDebugFlag", 12},
      {"cqDebugFlag", 11},
+      {"offlineInterval", 15},
  };

  SStrToken* pOptionToken = taosArrayGet(pOptions->a, 1);
@@ -7303,6 +7329,14 @@ int32_t validateDNodeConfig(SMiscInfo* pOptions) {
      return TSDB_CODE_TSC_INVALID_OPERATION;  // options value is invalid
    }
    return TSDB_CODE_SUCCESS;
+  } else if ((strncasecmp(cfgOptions[tokenOfflineInterval].name, pOptionToken->z, pOptionToken->n) == 0) &&
+             (cfgOptions[tokenOfflineInterval].len == pOptionToken->n)) {
+    SStrToken* pValToken = taosArrayGet(pOptions->a, 2);
+    int32_t    val = strtol(pValToken->z, NULL, 10);
+    if (val < 1 || val > 600) {
+      return TSDB_CODE_TSC_INVALID_OPERATION;  // options value is invalid
+    }
+    return TSDB_CODE_SUCCESS;
  } else {
    SStrToken* pValToken = taosArrayGet(pOptions->a, 2);


--- a/src/client/src/tscServer.c
+++ b/src/client/src/tscServer.c
@@ -1866,6 +1866,7 @@ int tscProcessRetrieveGlobalMergeRsp(SSqlObj *pSql) {
  bool convertJson = true;
  if (pQueryInfo->isStddev == true) convertJson = false;
  convertQueryResult(pRes, pQueryInfo, pSql->self, true, convertJson);
+  pRes->code = pQueryInfo->pQInfo->code;

  code = pRes->code;
  if (pRes->code == TSDB_CODE_SUCCESS) {

--- a/src/client/src/tscUtil.c
+++ b/src/client/src/tscUtil.c
@@ -1479,6 +1479,18 @@ void handleDownstreamOperator(SSqlObj** pSqlObjList, int32_t numOfUpstream, SQue
          break;
        }
      }
+
+      // set input data order to param[1]
+      if(pex->base.functionId == TSDB_FUNC_FIRST || pex->base.functionId  ==  TSDB_FUNC_FIRST_DST ||
+         pex->base.functionId == TSDB_FUNC_LAST  || pex->base.functionId  ==  TSDB_FUNC_LAST_DST) {
+        // set input order
+        SQueryInfo* pInputQI = pSqlObjList[0]->cmd.pQueryInfo;
+        if(pInputQI) {
+          pex->base.numOfParams = 3;
+          pex->base.param[2].nType = TSDB_DATA_TYPE_INT;
+          pex->base.param[2].i64 = pInputQI->order.order;
+        }
+      }      
    }

    tscDebug("0x%"PRIx64" create QInfo 0x%"PRIx64" to execute the main query while all nest queries are ready", pSql->self, pSql->self);

--- a/src/common/inc/tglobal.h
+++ b/src/common/inc/tglobal.h
@@ -119,6 +119,7 @@ extern int32_t tsdbWalFlushSize;
 extern int8_t  tsEnableBalance;
 extern int8_t  tsAlternativeRole;
 extern int32_t tsBalanceInterval;
+extern int32_t tsOfflineInterval;
 extern int32_t tsOfflineThreshold;
 extern int32_t tsMnodeEqualVnodeNum;
 extern int8_t  tsEnableFlowCtrl;

--- a/src/common/src/tglobal.c
+++ b/src/common/src/tglobal.c
@@ -164,6 +164,7 @@ int32_t tsdbWalFlushSize = TSDB_DEFAULT_WAL_FLUSH_SIZE;  // MB
 int8_t  tsEnableBalance = 1;
 int8_t  tsAlternativeRole = 0;
 int32_t tsBalanceInterval = 300;          // seconds
+int32_t tsOfflineInterval = 3;            // seconds
 int32_t tsOfflineThreshold = 86400 * 10;  // seconds of 10 days
 int32_t tsMnodeEqualVnodeNum = 4;
 int8_t  tsEnableFlowCtrl = 1;
@@ -653,6 +654,16 @@ static void doInitGlobalConfig(void) {
  cfg.unitType = TAOS_CFG_UTYPE_NONE;
  taosInitConfigOption(cfg);

+  cfg.option = "offlineInterval";
+  cfg.ptr = &tsOfflineInterval;
+  cfg.valType = TAOS_CFG_VTYPE_INT32;
+  cfg.cfgType = TSDB_CFG_CTYPE_B_CONFIG | TSDB_CFG_CTYPE_B_SHOW;
+  cfg.minValue = 1;
+  cfg.maxValue = 600;
+  cfg.ptrLength = 0;
+  cfg.unitType = TAOS_CFG_UTYPE_NONE;
+  taosInitConfigOption(cfg);
+
  // 0-any; 1-mnode; 2-vnode
  cfg.option = "role";
  cfg.ptr = &tsAlternativeRole;

--- a/src/connector/C#/.gitignore
+++ b/src/connector/C#/.gitignore
 src/TDengineDriver/bin/
 src/TDengineDriver/obj/
-src/test/Cases/bin/
-src/test/Cases/obj/
+src/test/FunctionTest/bin/
+src/test/FunctionTest/obj/
 src/test/XUnitTest/bin/
 src/test/XUnitTest/obj/
+src/test/doc/
+NugetPackTest/
\ No newline at end of file
--- a/src/connector/C#/csharpTaos.sln
+++ b/src/connector/C#/csharpTaos.sln
@@ -11,7 +11,7 @@ Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "test", "test", "{CB8E6458-3
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "XUnitTest", "src\test\XUnitTest\XUnitTest.csproj", "{64C0A478-2591-4459-9F8F-A70F37976A41}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Cases", "src\test\Cases\Cases.csproj", "{19A69D26-66BF-4227-97BE-9B087BC76B2F}"
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "FunctionTest", "src\test\FunctionTest\FunctionTest.csproj", "{E66B034B-4677-4BFB-8B87-84715D281E21}"
 EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
@@ -50,23 +50,23 @@ Global
 		{64C0A478-2591-4459-9F8F-A70F37976A41}.Release|x64.Build.0 = Release|Any CPU
 		{64C0A478-2591-4459-9F8F-A70F37976A41}.Release|x86.ActiveCfg = Release|Any CPU
 		{64C0A478-2591-4459-9F8F-A70F37976A41}.Release|x86.Build.0 = Release|Any CPU
-		{19A69D26-66BF-4227-97BE-9B087BC76B2F}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
-		{19A69D26-66BF-4227-97BE-9B087BC76B2F}.Debug|Any CPU.Build.0 = Debug|Any CPU
-		{19A69D26-66BF-4227-97BE-9B087BC76B2F}.Debug|x64.ActiveCfg = Debug|Any CPU
-		{19A69D26-66BF-4227-97BE-9B087BC76B2F}.Debug|x64.Build.0 = Debug|Any CPU
-		{19A69D26-66BF-4227-97BE-9B087BC76B2F}.Debug|x86.ActiveCfg = Debug|Any CPU
-		{19A69D26-66BF-4227-97BE-9B087BC76B2F}.Debug|x86.Build.0 = Debug|Any CPU
-		{19A69D26-66BF-4227-97BE-9B087BC76B2F}.Release|Any CPU.ActiveCfg = Release|Any CPU
-		{19A69D26-66BF-4227-97BE-9B087BC76B2F}.Release|Any CPU.Build.0 = Release|Any CPU
-		{19A69D26-66BF-4227-97BE-9B087BC76B2F}.Release|x64.ActiveCfg = Release|Any CPU
-		{19A69D26-66BF-4227-97BE-9B087BC76B2F}.Release|x64.Build.0 = Release|Any CPU
-		{19A69D26-66BF-4227-97BE-9B087BC76B2F}.Release|x86.ActiveCfg = Release|Any CPU
-		{19A69D26-66BF-4227-97BE-9B087BC76B2F}.Release|x86.Build.0 = Release|Any CPU
+		{E66B034B-4677-4BFB-8B87-84715D281E21}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{E66B034B-4677-4BFB-8B87-84715D281E21}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{E66B034B-4677-4BFB-8B87-84715D281E21}.Debug|x64.ActiveCfg = Debug|Any CPU
+		{E66B034B-4677-4BFB-8B87-84715D281E21}.Debug|x64.Build.0 = Debug|Any CPU
+		{E66B034B-4677-4BFB-8B87-84715D281E21}.Debug|x86.ActiveCfg = Debug|Any CPU
+		{E66B034B-4677-4BFB-8B87-84715D281E21}.Debug|x86.Build.0 = Debug|Any CPU
+		{E66B034B-4677-4BFB-8B87-84715D281E21}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{E66B034B-4677-4BFB-8B87-84715D281E21}.Release|Any CPU.Build.0 = Release|Any CPU
+		{E66B034B-4677-4BFB-8B87-84715D281E21}.Release|x64.ActiveCfg = Release|Any CPU
+		{E66B034B-4677-4BFB-8B87-84715D281E21}.Release|x64.Build.0 = Release|Any CPU
+		{E66B034B-4677-4BFB-8B87-84715D281E21}.Release|x86.ActiveCfg = Release|Any CPU
+		{E66B034B-4677-4BFB-8B87-84715D281E21}.Release|x86.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(NestedProjects) = preSolution
 		{5BED7402-0A65-4ED9-A491-C56BFB518045} = {A1FB5B66-E32F-4789-9BE9-042E5BD21087}
 		{CB8E6458-31E1-4351-B704-1B918E998654} = {A1FB5B66-E32F-4789-9BE9-042E5BD21087}
 		{64C0A478-2591-4459-9F8F-A70F37976A41} = {CB8E6458-31E1-4351-B704-1B918E998654}
-		{19A69D26-66BF-4227-97BE-9B087BC76B2F} = {CB8E6458-31E1-4351-B704-1B918E998654}
+		{E66B034B-4677-4BFB-8B87-84715D281E21} = {CB8E6458-31E1-4351-B704-1B918E998654}
 	EndGlobalSection
 EndGlobal
--- a/src/connector/C#/src/TDengineDriver/TDengineDriver.cs
+++ b/src/connector/C#/src/TDengineDriver/TDengineDriver.cs
@@ -87,7 +87,7 @@ namespace TDengineDriver
                case TDengineDataType.TSDB_DATA_TYPE_DOUBLE:
                    return "DOUBLE";
                case TDengineDataType.TSDB_DATA_TYPE_BINARY:
-                    return "STRING";
+                    return "BINARY";
                case TDengineDataType.TSDB_DATA_TYPE_TIMESTAMP:
                    return "TIMESTAMP";
                case TDengineDataType.TSDB_DATA_TYPE_NCHAR:

--- a/src/connector/C#/src/TDengineDriver/TDengineDriver.csproj
+++ b/src/connector/C#/src/TDengineDriver/TDengineDriver.csproj
 <Project Sdk="Microsoft.NET.Sdk">

-  <PropertyGroup>
-    <TargetFramework>net5.0</TargetFramework>
+ <PropertyGroup>
+    <TargetFrameworks>net5;netstandard2.0;net45</TargetFrameworks>
+    <PackageId>TDengine.Connector</PackageId>
+    <PackageIcon>logo.jpg</PackageIcon>
+    <Version>1.0.4</Version>
+    <Authors>taosdata</Authors>
+    <Company>www.taosdata.com</Company>
+    <PackageLicenseExpression>MIT</PackageLicenseExpression>
+    <PackageTags>Taos;Data;Microsoft.NET.Sdk;IOT;bigdata;TDengine;taosdata</PackageTags>
+    <Description>
+        This is the C# connector's classlib that lets you connect to TDengine. 
+        This C # connector supports: Linux 64/Windows x64/Windows x86.
+        more information please visit: https://www.taosdata.com
+    </Description>
+    <RepositoryUrl>https://github.com/taosdata/TDengine/tree/develop/src/connector/C%2523/src/TDengineDriver</RepositoryUrl>
+    <NoWarn>CS1591</NoWarn>
  </PropertyGroup>
+  <ItemGroup>
+    <None Include="resource\logo.jpg" Pack="true" PackagePath="\" />
+  </ItemGroup>
+ 

 </Project>
--- a/src/connector/C#/src/TDengineDriver/TaosMultiBind.cs
+++ b/src/connector/C#/src/TDengineDriver/TaosMultiBind.cs
@@ -436,49 +436,46 @@ namespace TDengineDriver
        {
            TAOS_MULTI_BIND multiBind = new TAOS_MULTI_BIND();
            int elementCount = arr.Length;
+            //TypeSize represent the Max element length of the comming arr
+            //The size of the buffer is typeSize * elementCount
+            //This buffer is used to store TAOS_MULTI_BIND.buffer
            int typeSize = MaxElementLength(arr);
+            //This intSize is used to calcuate buffer size of the struct TAOS_MULTI_BIND's 
+            //length. The buffer is intSize * elementCount,which is used to store TAOS_MULTI_BIND.length
            int intSize = sizeof(int);
+            //This byteSize is used to calculate the buffer size of the struct TAOS_MULTI_BIND.is_null
+            //This buffer size is byteSize * elementCount
            int byteSize = sizeof(byte);
-            StringBuilder arrStrBuilder = new StringBuilder(); ;

+            StringBuilder arrStrBuilder = new StringBuilder(); ;
            //TAOS_MULTI_BIND.length
            IntPtr lengthArr = Marshal.AllocHGlobal(intSize * elementCount);
            //TAOS_MULTI_BIND.is_null
            IntPtr nullArr = Marshal.AllocHGlobal(byteSize * elementCount);
+            //TAOS_MULTI_BIND.buffer
+            IntPtr uNcharBuff = Marshal.AllocHGlobal(typeSize * elementCount);

            for (int i = 0; i < elementCount; i++)
            {
                int itemLength = 0;
                byte[] decodeByte = GetStringEncodeByte(arr[i]);
                itemLength = decodeByte.Length;
-                // if element if not null and element length is less then typeSize
-                // fill the memory with default char.Since arr element memory need align.
-                if (!String.IsNullOrEmpty(arr[i]) && typeSize == itemLength)
-                {
-                    arrStrBuilder.Append(arr[i]);
-                }
-                else if (!String.IsNullOrEmpty(arr[i]) && typeSize > itemLength)
-                {
-                    arrStrBuilder.Append(arr[i]);
-                    arrStrBuilder.Append(AlignCharArr(typeSize - itemLength));
-                }
-                else
+                if (!String.IsNullOrEmpty(arr[i]))
                {
-                    // if is null value,fill the memory with default values.
-                    arrStrBuilder.Append(AlignCharArr(typeSize));
+                    for (int j = 0; j < itemLength; j++)
+                    {
+                        //Read byte after byte
+                        Marshal.WriteByte(uNcharBuff, i * typeSize + j, decodeByte[j]);
+                    }
                }
-
-                //set TAOS_MULTI_BIND.length
-                Marshal.WriteInt32(lengthArr, intSize * i, typeSize);
-                //set TAOS_MULTI_BIND.is_null 
+                //Set TAOS_MULTI_BIND.length
+                Marshal.WriteInt32(lengthArr, intSize * i, itemLength);
+                //Set TAOS_MULTI_BIND.is_null 
                Marshal.WriteByte(nullArr, byteSize * i, Convert.ToByte(String.IsNullOrEmpty(arr[i]) ? 1 : 0));
            }
-            //set TAOS_MULTI_BIND.buffer
-            IntPtr uBinaryBuff = (IntPtr)Marshal.StringToHGlobalAnsi(arrStrBuilder.ToString());
-
-            //config TAOS_MULTI_BIND
+            //Config TAOS_MULTI_BIND
            multiBind.buffer_type = (int)TDengineDataType.TSDB_DATA_TYPE_BINARY;
-            multiBind.buffer = uBinaryBuff;
+            multiBind.buffer = uNcharBuff;
            multiBind.buffer_length = (ulong)typeSize;
            multiBind.length = lengthArr;
            multiBind.is_null = nullArr;
@@ -491,47 +488,43 @@ namespace TDengineDriver
        {
            TAOS_MULTI_BIND multiBind = new TAOS_MULTI_BIND();
            int elementCount = arr.Length;
+            //TypeSize represent the Max element length of the comming arr
+            //The size of the buffer is typeSize * elementCount
+            //This buffer is used to store TAOS_MULTI_BIND.buffer
            int typeSize = MaxElementLength(arr);
+            //This intSize is used to calcuate buffer size of the struct TAOS_MULTI_BIND's 
+            //length. The buffer is intSize * elementCount,which is used to store TAOS_MULTI_BIND.length
            int intSize = sizeof(int);
+            //This byteSize is used to calculate the buffer size of the struct TAOS_MULTI_BIND.is_null
+            //This buffer size is byteSize * elementCount
            int byteSize = sizeof(byte);
-            StringBuilder arrStrBuilder = new StringBuilder(); ;

            //TAOS_MULTI_BIND.length
            IntPtr lengthArr = Marshal.AllocHGlobal(intSize * elementCount);
            //TAOS_MULTI_BIND.is_null
            IntPtr nullArr = Marshal.AllocHGlobal(byteSize * elementCount);
+            //TAOS_MULTI_BIND.buffer
+            IntPtr uNcharBuff = Marshal.AllocHGlobal(typeSize * elementCount);

            for (int i = 0; i < elementCount; i++)
            {
                int itemLength = 0;
                byte[] decodeByte = GetStringEncodeByte(arr[i]);
                itemLength = decodeByte.Length;
-                // if element if not null and element length is less then typeSize
-                // fill the memory with default char.Since arr element memory need align.
-                if (!String.IsNullOrEmpty(arr[i]) && typeSize == itemLength)
-                {
-                    arrStrBuilder.Append(arr[i]);
-                }
-                else if (!String.IsNullOrEmpty(arr[i]) && typeSize > itemLength)
+                if (!String.IsNullOrEmpty(arr[i]))
                {
-                    arrStrBuilder.Append(arr[i]);
-                    arrStrBuilder.Append(AlignCharArr(typeSize - itemLength));
+                    for (int j = 0; j < itemLength; j++)
+                    {
+                        //Read byte after byte
+                        Marshal.WriteByte(uNcharBuff, i * typeSize + j, decodeByte[j]);
+                    }
                }
-                else
-                {
-                    // if is null value,fill the memory with default values.
-                    arrStrBuilder.Append(AlignCharArr(typeSize));
-                }
-
-                //set TAOS_MULTI_BIND.length
-                Marshal.WriteInt32(lengthArr, intSize * i, typeSize);
-                //set TAOS_MULTI_BIND.is_null 
+                //Set TAOS_MULTI_BIND.length
+                Marshal.WriteInt32(lengthArr, intSize * i, itemLength);
+                //Set TAOS_MULTI_BIND.is_null 
                Marshal.WriteByte(nullArr, byteSize * i, Convert.ToByte(String.IsNullOrEmpty(arr[i]) ? 1 : 0));
            }
-            //set TAOS_MULTI_BIND.buffer
-            IntPtr uNcharBuff = (IntPtr)Marshal.StringToHGlobalAnsi(arrStrBuilder.ToString());
-
-            //config TAOS_MULTI_BIND
+            //Config TAOS_MULTI_BIND
            multiBind.buffer_type = (int)TDengineDataType.TSDB_DATA_TYPE_NCHAR;
            multiBind.buffer = uNcharBuff;
            multiBind.buffer_length = (ulong)typeSize;
@@ -612,16 +605,16 @@ namespace TDengineDriver
        }

        private static Byte[] GetStringEncodeByte(string str)
-        {   
+        {
            Byte[] strToBytes = null;
-            if(String.IsNullOrEmpty(str))
+            if (String.IsNullOrEmpty(str))
            {
                strToBytes = System.Text.Encoding.Default.GetBytes(String.Empty);
            }
            else
            {
                strToBytes = System.Text.Encoding.Default.GetBytes(str);
-            } 
+            }
            return strToBytes;
        }
    }

--- a/src/connector/C#/src/TDengineDriver/resource/logo.jpg
+++ b/src/connector/C#/src/TDengineDriver/resource/logo.jpg
--- a/src/connector/C#/src/test/Cases/FetchLength.cs
+++ b/src/connector/C#/src/test/Cases/FetchLength.cs
-using System;
-using Test.UtilsTools;
-using System.Collections.Generic;
-
-namespace Cases
-{
-
-    public class FetchLengthCase
-    {
-        /// <author>xiaolei</author>
-        /// <Name>TestRetrieveBinary</Name>
-        /// <describe>TD-12103 C# connector fetch_row with binary data retrieving error</describe>
-        /// <filename>FetchLength.cs</filename>
-        /// <result>pass or failed </result>   
-        public void TestRetrieveBinary(IntPtr conn)
-        {
-            string sql1 = "create stable stb1 (ts timestamp, name binary(10)) tags(n int);";
-            string sql2 = "insert into tb1 using stb1 tags(1) values(now, 'log');";
-            string sql3 = "insert into tb2 using stb1 tags(2) values(now, 'test');";
-            string sql4 = "insert into tb3 using stb1 tags(3) values(now, 'db02');";
-            string sql5 = "insert into tb4 using stb1 tags(4) values(now, 'db3');";
-
-            string sql6 = "select distinct(name) from stb1;";//
-
-            UtilsTools.ExecuteQuery(conn, sql1);
-            UtilsTools.ExecuteQuery(conn, sql2);
-            UtilsTools.ExecuteQuery(conn, sql3);
-            UtilsTools.ExecuteQuery(conn, sql4);
-            UtilsTools.ExecuteQuery(conn, sql5);
-
-            IntPtr resPtr = IntPtr.Zero;
-            resPtr = UtilsTools.ExecuteQuery(conn, sql6);
-            List<List<string>> result = UtilsTools.GetResultSet(resPtr);
-
-            List<string> colname = result[0];
-            List<string> data = result[1];
-            UtilsTools.AssertEqual("db3", data[0]);
-            UtilsTools.AssertEqual("log", data[1]);
-            UtilsTools.AssertEqual("db02", data[2]);
-            UtilsTools.AssertEqual("test", data[3]);
-
-        }
-    }
-}
--- a/src/connector/C#/src/test/Cases/Program.cs
+++ b/src/connector/C#/src/test/Cases/Program.cs
-using System;
-using Test.UtilsTools;
-using Cases;
-
-namespace Cases.EntryPoint
-{
-    class Program
-    {
-
-        static void Main(string[] args)
-        {
-            IntPtr conn = IntPtr.Zero;
-            IntPtr stmt = IntPtr.Zero;
-            IntPtr res = IntPtr.Zero;
-
-            conn = UtilsTools.TDConnection("127.0.0.1", "root", "taosdata", "", 0);
-            UtilsTools.ExecuteUpdate(conn, "drop database if  exists csharp");
-            UtilsTools.ExecuteUpdate(conn, "create database if not exists csharp keep 3650");
-            UtilsTools.ExecuteUpdate(conn, "use csharp");
-
-            Console.WriteLine("====================StableColumnByColumn===================");
-            StableColumnByColumn columnByColumn = new StableColumnByColumn();
-            columnByColumn.Test(conn, "stablecolumnbycolumn");
-            Console.WriteLine("====================StmtStableQuery===================");
-            StmtStableQuery stmtStableQuery = new StmtStableQuery();
-            stmtStableQuery.Test(conn, "stablecolumnbycolumn");
-
-            Console.WriteLine("====================StableMutipleLine===================");
-            StableMutipleLine mutipleLine = new StableMutipleLine();
-            mutipleLine.Test(conn, "stablemutipleline");
-
-            //================================================================================
-
-            Console.WriteLine("====================NtableSingleLine===================");
-            NtableSingleLine ntableSingleLine = new NtableSingleLine();
-            ntableSingleLine.Test(conn, "stablesingleline");
-            IntPtr resPtr = UtilsTools.ExecuteQuery(conn, "select * from stablesingleline ");
-            UtilsTools.DisplayRes(resPtr);
-
-            Console.WriteLine("====================NtableMutipleLine===================");
-            NtableMutipleLine ntableMutipleLine = new NtableMutipleLine();
-            ntableMutipleLine.Test(conn, "ntablemutipleline");
-            Console.WriteLine("====================StmtNtableQuery===================");
-            StmtNtableQuery stmtNtableQuery = new StmtNtableQuery();
-            stmtNtableQuery.Test(conn, "ntablemutipleline");
-
-            Console.WriteLine("====================NtableColumnByColumn===================");
-            NtableColumnByColumn ntableColumnByColumn = new NtableColumnByColumn();
-            ntableColumnByColumn.Test(conn, "ntablecolumnbycolumn");
-
-            Console.WriteLine("====================fetchfeilds===================");
-            FetchFields fetchFields = new FetchFields();
-            fetchFields.Test(conn, "fetchfeilds");
-
-           
-            StableStmtCases stableStmtCases = new StableStmtCases();
-            Console.WriteLine("====================stableStmtCases.TestBindSingleLineCn===================");
-            stableStmtCases.TestBindSingleLineCn(conn, "stablestmtcasestestbindsinglelinecn");
-
-            Console.WriteLine("====================stableStmtCases.TestBindColumnCn===================");
-            stableStmtCases.TestBindColumnCn(conn, " stablestmtcasestestbindcolumncn");
-
-            Console.WriteLine("====================stableStmtCases.TestBindMultiLineCn===================");
-            stableStmtCases.TestBindMultiLineCn(conn, "stablestmtcasestestbindmultilinecn");
-
-            NormalTableStmtCases normalTableStmtCases = new NormalTableStmtCases();
-            Console.WriteLine("====================normalTableStmtCases.TestBindSingleLineCn===================");
-            normalTableStmtCases.TestBindSingleLineCn(conn, "normaltablestmtcasestestbindsinglelinecn");
-
-            Console.WriteLine("====================normalTableStmtCases.TestBindColumnCn===================");
-            normalTableStmtCases.TestBindColumnCn(conn, "normaltablestmtcasestestbindcolumncn");
-
-            Console.WriteLine("====================normalTableStmtCases.TestBindMultiLineCn===================");
-            normalTableStmtCases.TestBindMultiLineCn(conn, "normaltablestmtcasestestbindmultilinecn");
-
-            Console.WriteLine("===================JsonTagTest====================");
-            JsonTagTest jsonTagTest = new JsonTagTest();
-            jsonTagTest.Test(conn);
-
-            Console.WriteLine("====================fetchLengthCase===================");
-            FetchLengthCase fetchLengthCase = new FetchLengthCase();
-            fetchLengthCase.TestRetrieveBinary(conn);
-
-            UtilsTools.ExecuteQuery(conn, "drop database if  exists csharp");
-            UtilsTools.CloseConnection(conn);
-            UtilsTools.ExitProgram();
-            
-        }
-    }
-}
--- a/src/connector/C#/src/test/Cases/StmtStable.cs
+++ b/src/connector/C#/src/test/Cases/StmtStable.cs
-using System;
-using Test.UtilsTools;
-using TDengineDriver;
-using Test.UtilsTools.DataSource;
-
-namespace Cases
-{
-
-    public class StableMutipleLine
-    {
-        TAOS_BIND[] tags = DataSource.getTags();
-        TAOS_MULTI_BIND[] mbind = DataSource.GetMultiBindArr();
-        public void Test(IntPtr conn, string tableName)
-        {
-            String createTb = "create stable " + tableName + " (ts timestamp ,b bool,v1 tinyint,v2 smallint,v4 int,v8 bigint,f4 float,f8 double,u1 tinyint unsigned,u2 smallint unsigned,u4 int unsigned,u8 bigint unsigned,bin binary(200),blob nchar(200))tags(bo bool,tt tinyint,si smallint,ii int,bi bigint,tu tinyint unsigned,su smallint unsigned,iu int unsigned,bu bigint unsigned,ff float ,dd double ,bb binary(200),nc nchar(200));";
-            String insertSql = "insert into ? using " + tableName + " tags(?,?,?,?,?,?,?,?,?,?,?,?,?) values(?,?,?,?,?,?,?,?,?,?,?,?,?,?)";
-
-            UtilsTools.ExecuteUpdate(conn, createTb);
-            IntPtr stmt = StmtUtilTools.StmtInit(conn);
-
-            StmtUtilTools.StmtPrepare(stmt, insertSql);
-            StmtUtilTools.SetTableNameTags(stmt, tableName + "_t1", tags);
-            StmtUtilTools.BindParamBatch(stmt, mbind);
-            StmtUtilTools.AddBatch(stmt);
-            StmtUtilTools.StmtExecute(stmt);
-
-            StmtUtilTools.StmtClose(stmt);
-            DataSource.FreeTaosBind(tags);
-            DataSource.FreeTaosMBind(mbind);
-        }
-    }
-    public class StableColumnByColumn
-    {
-        DataSource data = new DataSource();
-
-        TAOS_BIND[] tags = DataSource.getTags();
-        TAOS_MULTI_BIND[] mbind = DataSource.GetMultiBindArr();
-        public void Test(IntPtr conn, string tableName)
-        {
-            String createTb = "create stable " + tableName + " (ts timestamp ,b bool,v1 tinyint,v2 smallint,v4 int,v8 bigint,f4 float,f8 double,u1 tinyint unsigned,u2 smallint unsigned,u4 int unsigned,u8 bigint unsigned,bin binary(200),blob nchar(200))tags(bo bool,tt tinyint,si smallint,ii int,bi bigint,tu tinyint unsigned,su smallint unsigned,iu int unsigned,bu bigint unsigned,ff float ,dd double ,bb binary(200),nc nchar(200));";
-            String insertSql = "insert into ? using " + tableName + " tags(?,?,?,?,?,?,?,?,?,?,?,?,?) values(?,?,?,?,?,?,?,?,?,?,?,?,?,?)";
-
-
-            UtilsTools.ExecuteUpdate(conn, createTb);
-            IntPtr stmt = StmtUtilTools.StmtInit(conn);
-            StmtUtilTools.StmtPrepare(stmt, insertSql);
-
-            StmtUtilTools.SetTableNameTags(stmt, tableName + "_t1", tags);
-            StmtUtilTools.BindSingleParamBatch(stmt, mbind[0], 0);
-            StmtUtilTools.BindSingleParamBatch(stmt, mbind[1], 1);
-            StmtUtilTools.BindSingleParamBatch(stmt, mbind[2], 2);
-            StmtUtilTools.BindSingleParamBatch(stmt, mbind[3], 3);
-            StmtUtilTools.BindSingleParamBatch(stmt, mbind[4], 4);
-            StmtUtilTools.BindSingleParamBatch(stmt, mbind[5], 5);
-            StmtUtilTools.BindSingleParamBatch(stmt, mbind[6], 6);
-            StmtUtilTools.BindSingleParamBatch(stmt, mbind[7], 7);
-            StmtUtilTools.BindSingleParamBatch(stmt, mbind[8], 8);
-            StmtUtilTools.BindSingleParamBatch(stmt, mbind[9], 9);
-            StmtUtilTools.BindSingleParamBatch(stmt, mbind[10], 10);
-            StmtUtilTools.BindSingleParamBatch(stmt, mbind[11], 11);
-            StmtUtilTools.BindSingleParamBatch(stmt, mbind[12], 12);
-            StmtUtilTools.BindSingleParamBatch(stmt, mbind[13], 13);
-            StmtUtilTools.AddBatch(stmt);
-            StmtUtilTools.StmtExecute(stmt);
-            StmtUtilTools.StmtClose(stmt);
-
-            DataSource.FreeTaosBind(tags);
-            DataSource.FreeTaosMBind(mbind);
-
-        }
-    }
-
-    public class StableStmtCases
-    {
-        /// <author>xiaolei</author>
-        /// <Name>StableStmtCases.TestBindSingleLineCn</Name>
-        /// <describe>Test stmt insert single line of chinese character into stable by column after column </describe>
-        /// <filename>StmtSTable.cs</filename>
-        /// <result>pass or failed </result>  
-        public void TestBindSingleLineCn(IntPtr conn, string tableName)
-        {
-            TAOS_BIND[] tags = DataSource.getCNTags();
-            TAOS_BIND[] binds = DataSource.getNtableCNRow();
-            String createTb = "create stable " + tableName + " (ts timestamp,v1 tinyint,v2 smallint,v4 int,v8 bigint,u1 tinyint unsigned,u2 smallint unsigned,u4 int unsigned,u8 bigint unsigned,f4 float,f8 double,bin binary(200),blob nchar(200),b bool,nilcol int)tags(bo bool,tt tinyint,si smallint,ii int,bi bigint,tu tinyint unsigned,su smallint unsigned,iu int unsigned,bu bigint unsigned,ff float ,dd double ,bb binary(200),nc nchar(200));";
-            String insertSql = "insert into ? using " + tableName + " tags(?,?,?,?,?,?,?,?,?,?,?,?,?) values(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)";
-
-            UtilsTools.ExecuteUpdate(conn, createTb);
-            IntPtr stmt = StmtUtilTools.StmtInit(conn);
-
-            StmtUtilTools.StmtPrepare(stmt, insertSql);
-            StmtUtilTools.SetTableNameTags(stmt, tableName + "_t1", tags);
-            StmtUtilTools.BindParam(stmt, binds);
-            StmtUtilTools.AddBatch(stmt);
-            StmtUtilTools.StmtExecute(stmt);
-
-            StmtUtilTools.StmtClose(stmt);
-            DataSource.FreeTaosBind(tags);
-            DataSource.FreeTaosBind(binds);
-
-            string querySql = "select * from " + tableName;
-            IntPtr res = UtilsTools.ExecuteQuery(conn, querySql);
-            UtilsTools.DisplayRes(res);
-
-        }
-
-        /// <author>xiaolei</author>
-        /// <Name>StableStmtCases.TestBindColumnCn</Name>
-        /// <describe>Test stmt insert single line of chinese character into stable by column after column </describe>
-        /// <filename>StmtSTable.cs</filename>
-        /// <result>pass or failed </result>  
-        public void TestBindColumnCn(IntPtr conn, string tableName)
-        {
-            DataSource data = new DataSource();
-            TAOS_BIND[] tags = DataSource.getCNTags();
-            TAOS_MULTI_BIND[] mbind = DataSource.GetMultiBindCNArr();
-
-            String createTb = "create stable " + tableName + " (ts timestamp ,b bool,v1 tinyint,v2 smallint,v4 int,v8 bigint,f4 float,f8 double,u1 tinyint unsigned,u2 smallint unsigned,u4 int unsigned,u8 bigint unsigned,bin binary(200),blob nchar(200))tags(bo bool,tt tinyint,si smallint,ii int,bi bigint,tu tinyint unsigned,su smallint unsigned,iu int unsigned,bu bigint unsigned,ff float ,dd double ,bb binary(200),nc nchar(200));";
-            String insertSql = "insert into ? using " + tableName + " tags(?,?,?,?,?,?,?,?,?,?,?,?,?) values(?,?,?,?,?,?,?,?,?,?,?,?,?,?)";
-
-
-            UtilsTools.ExecuteUpdate(conn, createTb);
-            IntPtr stmt = StmtUtilTools.StmtInit(conn);
-
-            StmtUtilTools.StmtPrepare(stmt, insertSql);
-            StmtUtilTools.SetTableNameTags(stmt, tableName + "_t1", tags);
-
-            StmtUtilTools.BindSingleParamBatch(stmt, mbind[0], 0);
-            StmtUtilTools.BindSingleParamBatch(stmt, mbind[1], 1);
-            StmtUtilTools.BindSingleParamBatch(stmt, mbind[2], 2);
-            StmtUtilTools.BindSingleParamBatch(stmt, mbind[3], 3);
-            StmtUtilTools.BindSingleParamBatch(stmt, mbind[4], 4);
-            StmtUtilTools.BindSingleParamBatch(stmt, mbind[5], 5);
-            StmtUtilTools.BindSingleParamBatch(stmt, mbind[6], 6);
-            StmtUtilTools.BindSingleParamBatch(stmt, mbind[7], 7);
-            StmtUtilTools.BindSingleParamBatch(stmt, mbind[8], 8);
-            StmtUtilTools.BindSingleParamBatch(stmt, mbind[9], 9);
-            StmtUtilTools.BindSingleParamBatch(stmt, mbind[10], 10);
-            StmtUtilTools.BindSingleParamBatch(stmt, mbind[11], 11);
-            StmtUtilTools.BindSingleParamBatch(stmt, mbind[12], 12);
-            StmtUtilTools.BindSingleParamBatch(stmt, mbind[13], 13);
-
-            StmtUtilTools.AddBatch(stmt);
-            StmtUtilTools.StmtExecute(stmt);
-            StmtUtilTools.StmtClose(stmt);
-
-            DataSource.FreeTaosBind(tags);
-            DataSource.FreeTaosMBind(mbind);
-
-            string querySql = "select * from " + tableName;
-            IntPtr res = UtilsTools.ExecuteQuery(conn, querySql);
-            UtilsTools.DisplayRes(res);
-
-
-        }
-
-        /// <author>xiaolei</author>
-        /// <Name>StableStmtCases.TestBindMultiLineCn</Name>
-        /// <describe>Test stmt insert single line of chinese character into stable by column after column </describe>
-        /// <filename>StmtSTable.cs</filename>
-        /// <result>pass or failed </result>  
-        public void TestBindMultiLineCn(IntPtr conn, string tableName)
-        {
-            TAOS_BIND[] tags = DataSource.getCNTags();
-            TAOS_MULTI_BIND[] mbind = DataSource.GetMultiBindCNArr();
-
-            String createTb = "create stable " + tableName + " (ts timestamp ,b bool,v1 tinyint,v2 smallint,v4 int,v8 bigint,f4 float,f8 double,u1 tinyint unsigned,u2 smallint unsigned,u4 int unsigned,u8 bigint unsigned,bin binary(200),blob nchar(200))tags(bo bool,tt tinyint,si smallint,ii int,bi bigint,tu tinyint unsigned,su smallint unsigned,iu int unsigned,bu bigint unsigned,ff float ,dd double ,bb binary(200),nc nchar(200));";
-            String insertSql = "insert into ? using " + tableName + " tags(?,?,?,?,?,?,?,?,?,?,?,?,?) values(?,?,?,?,?,?,?,?,?,?,?,?,?,?)";
-
-            UtilsTools.ExecuteUpdate(conn, createTb);
-            IntPtr stmt = StmtUtilTools.StmtInit(conn);
-
-            StmtUtilTools.StmtPrepare(stmt, insertSql);
-            StmtUtilTools.SetTableNameTags(stmt, tableName + "_t1", tags);
-            StmtUtilTools.BindParamBatch(stmt, mbind);
-            StmtUtilTools.AddBatch(stmt);
-            StmtUtilTools.StmtExecute(stmt);
-
-            StmtUtilTools.StmtClose(stmt);
-            DataSource.FreeTaosBind(tags);
-            DataSource.FreeTaosMBind(mbind);
-
-            string querySql = "select * from " + tableName;
-            IntPtr res = UtilsTools.ExecuteQuery(conn, querySql);
-            UtilsTools.DisplayRes(res);
-        }
-
-    }
-}
\ No newline at end of file
--- a/src/connector/C#/src/test/Cases/TaosFeild.cs
+++ b/src/connector/C#/src/test/Cases/TaosFeild.cs
-using System;
-using Test.UtilsTools;
-using TDengineDriver;
-using System.Collections.Generic;
-using System.Runtime.InteropServices;
-namespace Cases
-{
-    public class FetchFields
-    {
-        public void Test(IntPtr conn, string tableName)
-        {
-            IntPtr res = IntPtr.Zero;
-            String createTb = "create stable " + tableName + " (ts timestamp ,b bool,v1 tinyint,v2 smallint,v4 int,v8 bigint,f4 float,f8 double,u1 tinyint unsigned,u2 smallint unsigned,u4 int unsigned,u8 bigint unsigned,bin binary(200),blob nchar(200))tags(jsontag json);";
-            String insertSql = "insert into " + tableName + "_t1 using " + tableName + " tags('{\"k1\": \"v1\"}') values(1637064040000,true,1,2,3,4,5,6,7,8,9,10,'XI','XII')";
-            String selectSql = "select * from " + tableName;
-            String dropSql = "drop table " + tableName;
-            UtilsTools.ExecuteQuery(conn, createTb);
-            UtilsTools.ExecuteQuery(conn, insertSql);
-            res = UtilsTools.ExecuteQuery(conn, selectSql);
-            UtilsTools.ExecuteQuery(conn, dropSql);
-
-            List<TDengineMeta> metas = new List<TDengineMeta>();
-            metas = TDengine.FetchFields(res);
-            if (metas.Capacity == 0)
-            {
-                Console.WriteLine("empty result");
-            }
-            else
-            {
-                foreach(TDengineMeta meta in metas){
-                    Console.WriteLine("col_name:{0},col_type_code:{1},col_type:{2}({3})",meta.name,meta.type,meta.TypeName(),meta.size);
-                }
-            }
-
-        }
-    }
-}
-
-
--- a/src/connector/C#/src/test/Cases/DataSource.cs
+++ b/src/connector/C#/src/test/Cases/DataSource.cs
 using System;
 using Test.UtilsTools;
 using TDengineDriver;
-
+using System.Collections.Generic;
 namespace Test.UtilsTools.DataSource
 {
    public class DataSource
@@ -23,7 +23,10 @@ namespace Test.UtilsTools.DataSource

        public static string[] binaryArrCn = new string[5] { "涛思数据", String.Empty, null, "taosdata涛思数据", "涛思数据TDengine" };
        public static string[] NcharArrCn = new string[5] { "涛思数据", null, "taosdata涛思数据", "涛思数据TDengine", String.Empty };
-        public static TAOS_BIND[] getTags()
+
+        // Construct a TAOS_BIND array which contains normal character.
+        // For stmt bind tags,this will be used as tag info
+        public static TAOS_BIND[] GetTags()
        {
            TAOS_BIND[] binds = new TAOS_BIND[13];
            binds[0] = TaosBind.BindBool(true);
@@ -41,8 +44,59 @@ namespace Test.UtilsTools.DataSource
            binds[12] = TaosBind.BindNchar("qwertyuiopasdfghjklzxcvbnmQWERTYUIOPASDFGHJKZXCVBNM`1234567890-=+_)(*&^%$#@!~[];,./<>?:{}");
            return binds;
        }
+        // Get the tag data within and string list 
+        // Which will be retrieved as a string List
+        private static List<String> GetTagData()
+        {
+            List<String> tagData = new List<String>();
+            tagData.Add(true.ToString());
+            tagData.Add((-2).ToString());
+            tagData.Add((short.MaxValue).ToString());
+            tagData.Add((int.MaxValue).ToString());
+            tagData.Add((Int64.MaxValue).ToString());
+            tagData.Add((byte.MaxValue - 1).ToString());
+            tagData.Add((UInt16.MaxValue - 1).ToString());
+            tagData.Add((uint.MinValue + 1).ToString());
+            tagData.Add((UInt64.MinValue + 1).ToString());
+            tagData.Add((11.11F).ToString());
+            tagData.Add((22.22D).ToString());
+            tagData.Add("qwertyuiopasdfghjklzxcvbnmQWERTYUIOPASDFGHJKZXCVBNM`1234567890-=+_)(*&^%$#@!~[];,./<>?:{}");
+            tagData.Add("qwertyuiopasdfghjklzxcvbnmQWERTYUIOPASDFGHJKZXCVBNM`1234567890-=+_)(*&^%$#@!~[];,./<>?:{}");
+            return tagData;
+        }

-        public static TAOS_BIND[] getCNTags()
+        public static List<string> GetMultiBindStableRowData()
+        {
+            List<string> rowData = new List<String>();
+            List<string> tagData = GetTagData();
+            for (int i = 0; i < tsArr.Length; i++)
+            {
+                rowData.Add(tsArr[i].ToString());
+                rowData.Add(boolArr[i].Equals(null) ? "NULL" : boolArr[i].ToString());
+                rowData.Add(tinyIntArr[i].Equals(null) ? "NULL" : tinyIntArr[i].ToString());
+                rowData.Add(shortArr[i].Equals(null) ? "NULL" : shortArr[i].ToString());
+                rowData.Add(intArr[i].Equals(null) ? "NULL" : intArr[i].ToString());
+                rowData.Add(longArr[i].Equals(null) ? "NULL" : longArr[i].ToString());
+                rowData.Add(floatArr[i].Equals(null) ? "NULL" : floatArr[i].ToString());
+                rowData.Add(doubleArr[i].Equals(null) ? "NULL" : doubleArr[i].ToString());
+                rowData.Add(uTinyIntArr[i].Equals(null) ? "NULL" : uTinyIntArr[i].ToString());
+                rowData.Add(uShortArr[i].Equals(null) ? "NULL" : uShortArr[i].ToString());
+                rowData.Add(uIntArr[i].Equals(null) ? "NULL" : uIntArr[i].ToString());
+                rowData.Add(uLongArr[i].Equals(null) ? "NULL" : uLongArr[i].ToString());
+                rowData.Add(String.IsNullOrEmpty(binaryArr[i]) ? "NULL" : binaryArr[i]);
+                rowData.Add(String.IsNullOrEmpty(ncharArr[i]) ? "NULL" : ncharArr[i]);
+                rowData.AddRange(tagData);
+                // Console.WriteLine("binaryArrCn[{0}]:{1},ncharArr[{0}]:{2}",i,String.IsNullOrEmpty(binaryArrCn[i]) ? "NULL" : binaryArrCn[i],String.IsNullOrEmpty(ncharArr[i]) ? "NULL" : NcharArrCn[i]);
+                // Console.WriteLine("binaryArrCn[{0}]:{1},ncharArr[{0}]:{2}",i,String.IsNullOrEmpty(binaryArrCn[i]) ? 0 :binaryArrCn[i].Length, String.IsNullOrEmpty(ncharArr[i]) ? 0 : NcharArrCn[i].Length);
+                // Console.WriteLine("========");
+
+            }
+            return rowData;
+
+        }
+        // Construct a TAOS_BIND array which contains chinese character.
+        // For stmt bind tags,this will be used as tag info
+        public static TAOS_BIND[] GetCNTags()
        {
            TAOS_BIND[] binds = new TAOS_BIND[13];
            binds[0] = TaosBind.BindBool(true);
@@ -57,11 +111,32 @@ namespace Test.UtilsTools.DataSource
            binds[9] = TaosBind.BindFloat(11.11F);
            binds[10] = TaosBind.BindDouble(22.22D);
            binds[11] = TaosBind.BindBinary("TDengine涛思数据");
-            binds[12] = TaosBind.BindNchar("涛思");
+            binds[12] = TaosBind.BindNchar("涛思数据taos");
            return binds;
        }
-
-        public static TAOS_BIND[] getNtableCNRow()
+        // Get the tag data within and string list 
+        // Which will be retrieved as a string List
+        private static List<String> GetTagCnData()
+        {
+            List<String> tagData = new List<String>();
+            tagData.Add(true.ToString());
+            tagData.Add((-2).ToString());
+            tagData.Add((short.MaxValue - 1).ToString());
+            tagData.Add((int.MaxValue - 1).ToString());
+            tagData.Add((Int64.MaxValue - 1).ToString());
+            tagData.Add((byte.MaxValue - 1).ToString());
+            tagData.Add((UInt16.MaxValue - 1).ToString());
+            tagData.Add((uint.MinValue + 1).ToString());
+            tagData.Add((UInt64.MinValue + 1).ToString());
+            tagData.Add((11.11F).ToString());
+            tagData.Add((22.22D).ToString());
+            tagData.Add("TDengine涛思数据");
+            tagData.Add("涛思数据taos");
+            return tagData;
+        }
+        // A line of data that's without CN character.
+        // Which is construct as an TAOS_BIND array
+        public static TAOS_BIND[] GetNtableCNRow()
        {
            TAOS_BIND[] binds = new TAOS_BIND[15];
            binds[0] = TaosBind.BindTimestamp(1637064040000);
@@ -81,8 +156,40 @@ namespace Test.UtilsTools.DataSource
            binds[14] = TaosBind.BindNil();
            return binds;
        }
+        //Get and list data that will be insert into table
+        public static List<String> GetNtableCNRowData()
+        {
+            var data = new List<string>{
+                "1637064040000",
+                "-2",
+                short.MaxValue.ToString(),
+                int.MaxValue.ToString(),
+                Int64.MaxValue.ToString(),
+                (byte.MaxValue - 1).ToString(),
+                (UInt16.MaxValue - 1).ToString(),
+                (uint.MinValue + 1).ToString(),
+                (UInt64.MinValue + 1).ToString(),
+                (11.11F).ToString(),
+                (22.22D).ToString(),
+                "TDengine数据",
+                "taosdata涛思数据",
+                "True",
+                "NULL"
+            };
+            return data;
+        }
+        // Get the data value and tag values which have chinese characters
+        // And retrieved as a string list.This is single Line.
+        public static List<String> GetStableCNRowData()
+        {
+            List<String> columnData = GetNtableCNRowData();
+            List<String> tagData = GetTagCnData();
+            columnData.AddRange(tagData);
+            return columnData;
+        }

-        public static TAOS_BIND[] getNtableRow()
+        // A line of data that's without CN character
+        public static TAOS_BIND[] GetNtableRow()
        {
            TAOS_BIND[] binds = new TAOS_BIND[15];
            binds[0] = TaosBind.BindTimestamp(1637064040000);
@@ -102,6 +209,31 @@ namespace Test.UtilsTools.DataSource
            binds[14] = TaosBind.BindNil();
            return binds;
        }
+        // A List of data ,use as expectResData. The value is equal to getNtableRow()
+        public static List<String> GetNtableRowData()
+        {
+            var data = new List<string>{
+            "1637064040000",
+            "-2",
+            short.MaxValue.ToString(),
+            int.MaxValue.ToString(),
+            (Int64.MaxValue).ToString(),
+            (byte.MaxValue - 1).ToString(),
+            (UInt16.MaxValue - 1).ToString(),
+            (uint.MinValue + 1).ToString(),
+            (UInt64.MinValue + 1).ToString(),
+            (11.11F).ToString(),
+            (22.22D).ToString(),
+            "qwertyuiopasdfghjklzxcvbnmQWERTYUIOPASDFGHJKZXCVBNM`1234567890-=+_)(*&^%$#@!~[];,./<>?:{}",
+            "qwertyuiopasdfghjklzxcvbnmQWERTYUIOPASDFGHJKZXCVBNM`1234567890-=+_)(*&^%$#@!~[];,./<>?:{}",
+            true.ToString(),
+            "NULL"
+            };
+            return data;
+        }
+
+        // Five lines of data, that is construct as taos_mutli_bind array. 
+        // There aren't any CN character
        public static TAOS_MULTI_BIND[] GetMultiBindArr()
        {
            TAOS_MULTI_BIND[] mBinds = new TAOS_MULTI_BIND[14];
@@ -121,6 +253,35 @@ namespace Test.UtilsTools.DataSource
            mBinds[13] = TaosMultiBind.MultiBindNchar(ncharArr);
            return mBinds;
        }
+        // A List of data ,use as expectResData. The value is equal to GetMultiBindCNArr()
+        public static List<string> GetMultiBindResData()
+        {
+            var rowData = new List<string>();
+            for (int i = 0; i < tsArr.Length; i++)
+            {
+                rowData.Add(tsArr[i].ToString());
+                rowData.Add(boolArr[i].Equals(null) ? "NULL" : boolArr[i].ToString());
+                rowData.Add(tinyIntArr[i].Equals(null) ? "NULL" : tinyIntArr[i].ToString());
+                rowData.Add(shortArr[i].Equals(null) ? "NULL" : shortArr[i].ToString());
+                rowData.Add(intArr[i].Equals(null) ? "NULL" : intArr[i].ToString());
+                rowData.Add(longArr[i].Equals(null) ? "NULL" : longArr[i].ToString());
+                rowData.Add(floatArr[i].Equals(null) ? "NULL" : floatArr[i].ToString());
+                rowData.Add(doubleArr[i].Equals(null) ? "NULL" : doubleArr[i].ToString());
+                rowData.Add(uTinyIntArr[i].Equals(null) ? "NULL" : uTinyIntArr[i].ToString());
+                rowData.Add(uShortArr[i].Equals(null) ? "NULL" : uShortArr[i].ToString());
+                rowData.Add(uIntArr[i].Equals(null) ? "NULL" : uIntArr[i].ToString());
+                rowData.Add(uLongArr[i].Equals(null) ? "NULL" : uLongArr[i].ToString());
+                rowData.Add(String.IsNullOrEmpty(binaryArr[i]) ? "NULL" : binaryArr[i]);
+                rowData.Add(String.IsNullOrEmpty(ncharArr[i]) ? "NULL" : ncharArr[i]);
+                // Console.WriteLine("binaryArrCn[{0}]:{1},NcharArrCn[{0}]:{2}",i,String.IsNullOrEmpty(binaryArrCn[i]) ? "NULL" : binaryArrCn[i],String.IsNullOrEmpty(NcharArrCn[i]) ? "NULL" : NcharArrCn[i]);
+                // Console.WriteLine("binaryArrCn[{0}]:{1},NcharArrCn[{0}]:{2}",i,String.IsNullOrEmpty(binaryArrCn[i]) ? 0 :binaryArrCn[i].Length, String.IsNullOrEmpty(NcharArrCn[i]) ? 0 : NcharArrCn[i].Length);
+                // Console.WriteLine("========");
+
+            }
+            return rowData;
+        }
+        // Five lines of data, that is construct as taos_mutli_bind array. 
+        // There aren some CN characters and letters.
        public static TAOS_MULTI_BIND[] GetMultiBindCNArr()
        {
            TAOS_MULTI_BIND[] mBinds = new TAOS_MULTI_BIND[14];
@@ -140,6 +301,62 @@ namespace Test.UtilsTools.DataSource
            mBinds[13] = TaosMultiBind.MultiBindNchar(NcharArrCn);
            return mBinds;
        }
+        // A List of data ,use as expectResData. The value is equal to GetMultiBindCNArr()
+        public static List<string> GetMultiBindCNRowData()
+        {
+            var rowData = new List<string>();
+            for (int i = 0; i < tsArr.Length; i++)
+            {
+                rowData.Add(tsArr[i].ToString());
+                rowData.Add(boolArr[i].Equals(null) ? "NULL" : boolArr[i].ToString());
+                rowData.Add(tinyIntArr[i].Equals(null) ? "NULL" : tinyIntArr[i].ToString());
+                rowData.Add(shortArr[i].Equals(null) ? "NULL" : shortArr[i].ToString());
+                rowData.Add(intArr[i].Equals(null) ? "NULL" : intArr[i].ToString());
+                rowData.Add(longArr[i].Equals(null) ? "NULL" : longArr[i].ToString());
+                rowData.Add(floatArr[i].Equals(null) ? "NULL" : floatArr[i].ToString());
+                rowData.Add(doubleArr[i].Equals(null) ? "NULL" : doubleArr[i].ToString());
+                rowData.Add(uTinyIntArr[i].Equals(null) ? "NULL" : uTinyIntArr[i].ToString());
+                rowData.Add(uShortArr[i].Equals(null) ? "NULL" : uShortArr[i].ToString());
+                rowData.Add(uIntArr[i].Equals(null) ? "NULL" : uIntArr[i].ToString());
+                rowData.Add(uLongArr[i].Equals(null) ? "NULL" : uLongArr[i].ToString());
+                rowData.Add(String.IsNullOrEmpty(binaryArrCn[i]) ? "NULL" : binaryArrCn[i]);
+                rowData.Add(String.IsNullOrEmpty(NcharArrCn[i]) ? "NULL" : NcharArrCn[i]);
+                // Console.WriteLine("binaryArrCn[{0}]:{1},NcharArrCn[{0}]:{2}",i,String.IsNullOrEmpty(binaryArrCn[i]) ? "NULL" : binaryArrCn[i],String.IsNullOrEmpty(NcharArrCn[i]) ? "NULL" : NcharArrCn[i]);
+                // Console.WriteLine("binaryArrCn[{0}]:{1},NcharArrCn[{0}]:{2}",i,String.IsNullOrEmpty(binaryArrCn[i]) ? 0 :binaryArrCn[i].Length, String.IsNullOrEmpty(NcharArrCn[i]) ? 0 : NcharArrCn[i].Length);
+                // Console.WriteLine("========");
+
+            }
+            return rowData;
+        }
+
+        public static List<String> GetMultiBindStableCNRowData()
+        {
+            List<String> columnData = new List<string>();
+            List<String> tagData = GetTagCnData();
+            for (int i = 0; i < tsArr.Length; i++)
+            {
+                columnData.Add(tsArr[i].ToString());
+                columnData.Add(boolArr[i].Equals(null) ? "NULL" : boolArr[i].ToString());
+                columnData.Add(tinyIntArr[i].Equals(null) ? "NULL" : tinyIntArr[i].ToString());
+                columnData.Add(shortArr[i].Equals(null) ? "NULL" : shortArr[i].ToString());
+                columnData.Add(intArr[i].Equals(null) ? "NULL" : intArr[i].ToString());
+                columnData.Add(longArr[i].Equals(null) ? "NULL" : longArr[i].ToString());
+                columnData.Add(floatArr[i].Equals(null) ? "NULL" : floatArr[i].ToString());
+                columnData.Add(doubleArr[i].Equals(null) ? "NULL" : doubleArr[i].ToString());
+                columnData.Add(uTinyIntArr[i].Equals(null) ? "NULL" : uTinyIntArr[i].ToString());
+                columnData.Add(uShortArr[i].Equals(null) ? "NULL" : uShortArr[i].ToString());
+                columnData.Add(uIntArr[i].Equals(null) ? "NULL" : uIntArr[i].ToString());
+                columnData.Add(uLongArr[i].Equals(null) ? "NULL" : uLongArr[i].ToString());
+                columnData.Add(String.IsNullOrEmpty(binaryArrCn[i]) ? "NULL" : binaryArrCn[i]);
+                columnData.Add(String.IsNullOrEmpty(NcharArrCn[i]) ? "NULL" : NcharArrCn[i]);
+                columnData.AddRange(tagData);
+                // Console.WriteLine("binaryArrCn[{0}]:{1},NcharArrCn[{0}]:{2}",i,String.IsNullOrEmpty(binaryArrCn[i]) ? "NULL" : binaryArrCn[i],String.IsNullOrEmpty(NcharArrCn[i]) ? "NULL" : NcharArrCn[i]);
+                // Console.WriteLine("binaryArrCn[{0}]:{1},NcharArrCn[{0}]:{2}",i,String.IsNullOrEmpty(binaryArrCn[i]) ? 0 :binaryArrCn[i].Length, String.IsNullOrEmpty(NcharArrCn[i]) ? 0 : NcharArrCn[i].Length);
+                // Console.WriteLine("========");
+
+            }
+            return columnData;
+        }

        public static TAOS_BIND[] GetQueryCondition()
        {
@@ -158,7 +375,47 @@ namespace Test.UtilsTools.DataSource
        {
            TaosMultiBind.FreeTaosBind(mbinds);
        }
+        //Get the TDengineMeta list from the ddl either normal table or stable
+        public static List<TDengineMeta> GetMetaFromDLL(string dllStr)
+        {
+            var expectResMeta = new List<TDengineMeta>();
+            //"CREATE TABLE meters(ts TIMESTAMP, current FLOAT, voltage INT, phase FLOAT) TAGS(location BINARY(30), groupId INT);";
+            int bracetInd = dllStr.IndexOf("(");
+            //(ts TIMESTAMP, current FLOAT, voltage INT, phase FLOAT) TAGS(location BINARY(30), groupId INT);
+            string subDllStr = dllStr.Substring(bracetInd);
+
+            String[] stableSeparators = new String[] { "tags", "TAGS" };
+            //(ts TIMESTAMP, current FLOAT, voltage INT, phase FLOAT)
+            //(location BINARY(30), groupId INT)
+            String[] dllStrElements = subDllStr.Split(stableSeparators, StringSplitOptions.RemoveEmptyEntries);
+            //(ts TIMESTAMP, current FLOAT, voltage INT, phase FLOAT)
+            dllStrElements[0] = dllStrElements[0].Substring(1, dllStrElements[0].Length - 2);
+            String[] finalStr1 = dllStrElements[0].Split(',', StringSplitOptions.RemoveEmptyEntries);
+            foreach (string item in finalStr1)
+            {
+                //ts TIMESTAMP
+                string[] itemArr = item.Split(' ', 2, StringSplitOptions.RemoveEmptyEntries);
+                // Console.WriteLine("GetMetaFromDLL():{0},{1}",itemArr[0],itemArr[1]);
+                expectResMeta.Add(UtilsTools.ConstructTDengineMeta(itemArr[0], itemArr[1]));
+            }
+            if (dllStr.Contains("TAGS") || dllStr.Contains("tags"))
+            {
+                //location BINARY(30), groupId INT
+                dllStrElements[1] = dllStrElements[1].Substring(1, dllStrElements[1].Length - 2);
+                //location BINARY(30)  groupId INT
+                String[] finalStr2 = dllStrElements[1].Split(',', StringSplitOptions.RemoveEmptyEntries);
+                Console.WriteLine("========");
+                foreach (string item in finalStr2)
+                {
+                    //location BINARY(30)
+                    string[] itemArr = item.Split(' ', 2, StringSplitOptions.RemoveEmptyEntries);
+                    // Console.WriteLine("GetMetaFromDLL():{0},{1}",itemArr[0],itemArr[1]);
+                    expectResMeta.Add(UtilsTools.ConstructTDengineMeta(itemArr[0], itemArr[1]));
+                }

+            }
+            return expectResMeta;
+        }

    }
 }
\ No newline at end of file
--- a/src/connector/C#/src/test/FunctionTest/FetchLength.cs
+++ b/src/connector/C#/src/test/FunctionTest/FetchLength.cs
+using System;
+using Test.UtilsTools;
+using System.Collections.Generic;
+using Xunit;
+using TDengineDriver;
+using Test.UtilsTools.ResultSet;
+namespace Cases
+{
+    public class FetchLengthCase
+    {
+        /// <author>xiaolei</author>
+        /// <Name>TestRetrieveBinary</Name>
+        /// <describe>TD-12103 C# connector fetch_row with binary data retrieving error</describe>
+        /// <filename>FetchLength.cs</filename>
+        /// <result>pass or failed </result>
+        [Fact(DisplayName = "Skip FetchLengthCase.TestRetrieveBinary()")]
+        public void TestRetrieveBinary()
+        {
+            IntPtr conn = UtilsTools.TDConnection();
+            var expectData = new List<string> { "log", "test", "db02", "db3" };
+            var expectMeta = new List<TDengineMeta>{
+                             UtilsTools.ConstructTDengineMeta("ts","timestamp"),
+                             UtilsTools.ConstructTDengineMeta("name","binary(10)"),
+                             UtilsTools.ConstructTDengineMeta("n","int")
+                             };
+            string sql0 = "drop table if exists stb1;";
+            string sql1 = "create stable if not exists stb1 (ts timestamp, name binary(10)) tags(n int);";
+            string sql2 = $"insert into tb1 using stb1 tags(1) values(now, '{expectData[0]}');";
+            string sql3 = $"insert into tb2 using stb1 tags(2) values(now, '{expectData[1]}');";
+            string sql4 = $"insert into tb3 using stb1 tags(3) values(now, '{expectData[2]}');";
+            string sql5 = $"insert into tb4 using stb1 tags(4) values(now, '{expectData[3]}');";
+
+            string sql6 = "select distinct(name) from stb1;";
+            UtilsTools.ExecuteQuery(conn, sql0);
+            UtilsTools.ExecuteQuery(conn, sql1);
+            UtilsTools.ExecuteQuery(conn, sql2);
+            UtilsTools.ExecuteQuery(conn, sql3);
+            UtilsTools.ExecuteQuery(conn, sql4);
+            UtilsTools.ExecuteQuery(conn, sql5);
+
+            IntPtr resPtr = IntPtr.Zero;
+            resPtr = UtilsTools.ExecuteQuery(conn, sql6);
+
+            ResultSet actualResult = new ResultSet(resPtr);
+            List<string> actualData = actualResult.GetResultData();
+            List<TDengineMeta> actualMeta = actualResult.GetResultMeta();
+            expectData.Reverse();
+
+            Assert.Equal(expectData[0], actualData[0]);
+            Assert.Equal(expectMeta[1].name, actualMeta[0].name);
+            Assert.Equal(expectMeta[1].size, actualMeta[0].size);
+            Assert.Equal(expectMeta[1].type, actualMeta[0].type);
+
+        }
+    }
+}
--- a/src/connector/C#/src/test/FunctionTest/FunctionTest.csproj
+++ b/src/connector/C#/src/test/FunctionTest/FunctionTest.csproj
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net5.0</TargetFramework>
+    <IsPackable>false</IsPackable>
+    <NoWarn>CS1591;CS0168</NoWarn>
+    <GenerateDocumentationFile>true</GenerateDocumentationFile>
+    <DocumentationFile>..\doc\FunctionTest.XML</DocumentationFile>
+  </PropertyGroup>
+ 
+  <ItemGroup>
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.9.4" />
+    <PackageReference Include="xunit" Version="2.4.1" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="2.4.3">
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+      <PrivateAssets>all</PrivateAssets>
+    </PackageReference>
+    <PackageReference Include="coverlet.collector" Version="3.0.2">
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+      <PrivateAssets>all</PrivateAssets>
+    </PackageReference>
+  </ItemGroup>
+ 
+  <ItemGroup>
+    <ProjectReference Include="..\..\TDengineDriver\TDengineDriver.csproj" />
+  </ItemGroup>
+
+</Project>
--- a/src/connector/C#/src/test/FunctionTest/ResultSetUtils.cs
+++ b/src/connector/C#/src/test/FunctionTest/ResultSetUtils.cs
+using System;
+using TDengineDriver;
+using System.Runtime.InteropServices;
+using System.Text;
+using System.Collections.Generic;
+namespace Test.UtilsTools.ResultSet
+{
+    public class ResultSet
+    {
+        private List<TDengineMeta> resultMeta;
+        private List<String> resultData;
+        // private bool isValidResult = false;
+        public ResultSet(IntPtr res)
+        {
+
+            resultMeta = UtilsTools.GetResField(res);
+            resultData = UtilsTools.GetResData(res);
+        }
+
+        public ResultSet(List<TDengineMeta> metas, List<String> datas)
+        {
+            resultMeta = metas;
+            resultData = datas;
+        }
+
+        public List<String> GetResultData()
+        {
+            return resultData;
+        }
+
+        public List<TDengineMeta> GetResultMeta()
+        {
+            return resultMeta;
+        }
+
+    }
+
+
+}
\ No newline at end of file
--- a/src/connector/C#/src/test/Cases/StmtNormalTable.cs
+++ b/src/connector/C#/src/test/Cases/StmtNormalTable.cs
--- a/src/connector/C#/src/test/Cases/StmtQuery.cs
+++ b/src/connector/C#/src/test/Cases/StmtQuery.cs
--- a/src/connector/C#/src/test/FunctionTest/StmtStable.cs
+++ b/src/connector/C#/src/test/FunctionTest/StmtStable.cs
--- a/src/connector/C#/src/test/Cases/StmtUtil.cs
+++ b/src/connector/C#/src/test/Cases/StmtUtil.cs
--- a/src/connector/C#/src/test/FunctionTest/TaosFeild.cs
+++ b/src/connector/C#/src/test/FunctionTest/TaosFeild.cs
+using System;
+using Test.UtilsTools;
+using TDengineDriver;
+using System.Collections.Generic;
+using Xunit;
+using Test.UtilsTools.ResultSet;
+namespace Cases
+{
+    public class FetchFieldCases
+    {
+        /// <author>xiaolei</author>
+        /// <Name>FetchFieldCases.TestFetchFieldJsonTag</Name>
+        /// <describe>test taos_fetch_fields(), check the meta data</describe>
+        /// <filename>TaosFeild.cs</filename>
+        /// <result>pass or failed </result>  
+        [Fact(DisplayName = "FetchFieldCases.TestFetchFieldJsonTag()")]
+        public void TestFetchFieldJsonTag()
+        {
+            IntPtr conn = UtilsTools.TDConnection();
+            IntPtr _res = IntPtr.Zero;
+            string tableName = "fetchfeilds";
+            var expectResMeta = new List<TDengineMeta> {
+                UtilsTools.ConstructTDengineMeta("ts", "timestamp"),
+                UtilsTools.ConstructTDengineMeta("b", "bool"),
+                UtilsTools.ConstructTDengineMeta("v1", "tinyint"),
+                UtilsTools.ConstructTDengineMeta("v2", "smallint"),
+                UtilsTools.ConstructTDengineMeta("v4", "int"),
+                UtilsTools.ConstructTDengineMeta("v8", "bigint"),
+                UtilsTools.ConstructTDengineMeta("f4", "float"),
+                UtilsTools.ConstructTDengineMeta("f8", "double"),
+                UtilsTools.ConstructTDengineMeta("u1", "tinyint unsigned"),
+                UtilsTools.ConstructTDengineMeta("u2", "smallint unsigned"),
+                UtilsTools.ConstructTDengineMeta("u4", "int unsigned"),
+                UtilsTools.ConstructTDengineMeta("u8", "bigint unsigned"),
+                UtilsTools.ConstructTDengineMeta("bin", "binary(200)"),
+                UtilsTools.ConstructTDengineMeta("blob", "nchar(200)"),
+                UtilsTools.ConstructTDengineMeta("jsontag", "json"),
+            };
+            var expectResData = new List<String> { "1637064040000", "true", "1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "XI", "XII", "{\"k1\": \"v1\"}" };
+            String dropTb = "drop table if exists " + tableName;
+            String createTb = "create stable " + tableName
+                                + " (ts timestamp" +
+                                ",b bool" +
+                                ",v1 tinyint" +
+                                ",v2 smallint" +
+                                ",v4 int" +
+                                ",v8 bigint" +
+                                ",f4 float" +
+                                ",f8 double" +
+                                ",u1 tinyint unsigned" +
+                                ",u2 smallint unsigned" +
+                                ",u4 int unsigned" +
+                                ",u8 bigint unsigned" +
+                                ",bin binary(200)" +
+                                ",blob nchar(200)" +
+                                ")" +
+                                "tags" +
+                                "(jsontag json);";
+            String insertSql = "insert into " + tableName + "_t1 using " + tableName +
+                               " tags('{\"k1\": \"v1\"}') " +
+                               "values(1637064040000,true,1,2,3,4,5,6,7,8,9,10,'XI','XII')";
+            String selectSql = "select * from " + tableName;
+            String dropSql = "drop table " + tableName;
+
+            UtilsTools.ExecuteUpdate(conn, dropTb);
+            UtilsTools.ExecuteUpdate(conn, createTb);
+            UtilsTools.ExecuteUpdate(conn, insertSql);
+            _res = UtilsTools.ExecuteQuery(conn, selectSql);
+
+            ResultSet actualResult = new ResultSet(_res);
+            List<TDengineMeta> actualMeta = actualResult.GetResultMeta();
+            for (int i = 0; i < actualMeta.Count; i++)
+            {
+                Assert.Equal(expectResMeta[i].name, actualMeta[i].name);
+                Assert.Equal(expectResMeta[i].type, actualMeta[i].type);
+                Assert.Equal(expectResMeta[i].size, actualMeta[i].size);
+            }
+        }
+    }
+}
--- a/src/connector/C#/src/test/FunctionTest/Utils.cs
+++ b/src/connector/C#/src/test/FunctionTest/Utils.cs
+using System;
+using TDengineDriver;
+using System.Runtime.InteropServices;
+using System.Text;
+using System.Collections.Generic;
+namespace Test.UtilsTools
+{
+    public class UtilsTools
+    {
+
+        static string ip = "127.0.0.1";
+        static string user = "root";
+        static string password = "taosdata";
+        static string db = "";
+        static short port = 0;
+        public static IntPtr TDConnection()
+        {
+            TDengine.Options((int)TDengineInitOption.TDDB_OPTION_CONFIGDIR, GetConfigPath());
+            TDengine.Options((int)TDengineInitOption.TDDB_OPTION_SHELL_ACTIVITY_TIMER, "60");
+            TDengine.Init();
+            IntPtr conn = TDengine.Connect(ip, user, password, db, port);
+            // UtilsTools.ExecuteUpdate(conn, "drop database if  exists csharp");
+            UtilsTools.ExecuteUpdate(conn, "create database if not exists csharp keep 3650");
+            UtilsTools.ExecuteUpdate(conn, "use csharp");
+            return conn;
+        }
+        public static string GetConfigPath()
+        {
+              string configDir = "" ;
+        if(OperatingSystem.IsOSPlatform("Windows"))
+        {   
+            configDir = "C:/TDengine/cfg";
+        }
+        else if(OperatingSystem.IsOSPlatform("Linux"))
+        {
+            configDir = "/etc/taos";
+        }
+        else if(OperatingSystem.IsOSPlatform("macOS"))
+        {
+            configDir = "/etc/taos";
+        }
+        return configDir;
+        }
+
+        public static IntPtr ExecuteQuery(IntPtr conn, String sql)
+        {
+            IntPtr res = TDengine.Query(conn, sql);
+            if (!IsValidResult(res))
+            {
+                Console.Write(sql.ToString() + " failure, ");
+                ExitProgram();
+            }
+            else
+            {
+                Console.WriteLine(sql.ToString() + " success");
+            }
+            return res;
+        }
+
+        public static IntPtr ExecuteErrorQuery(IntPtr conn, String sql)
+        {
+            IntPtr res = TDengine.Query(conn, sql);
+            if (!IsValidResult(res))
+            {
+                Console.Write(sql.ToString() + " failure, ");
+                ExitProgram();
+            }
+            else
+            {
+                Console.WriteLine(sql.ToString() + " success");
+
+            }
+            return res;
+        }
+
+        public static void ExecuteUpdate(IntPtr conn, String sql)
+        {
+            IntPtr res = TDengine.Query(conn, sql);
+            if (!IsValidResult(res))
+            {
+                Console.Write(sql.ToString() + " failure, ");
+                ExitProgram();
+            }
+            else
+            {
+                Console.WriteLine(sql.ToString() + " success");
+
+            }
+            TDengine.FreeResult(res);
+        }
+
+        public static void DisplayRes(IntPtr res)
+        {
+            if (!IsValidResult(res))
+            {
+                ExitProgram();
+            }
+
+            List<TDengineMeta> metas = GetResField(res);
+            int fieldCount = metas.Count;
+
+            IntPtr rowdata;
+            // StringBuilder builder = new StringBuilder();
+            List<string> datas = QueryRes(res, metas);
+            Console.Write(" DisplayRes ---");
+            for (int i = 0; i < metas.Count; i++)
+            {
+                for (int j = 0; j < datas.Count; j++)
+                {
+                    Console.Write(" {0} ---", datas[i * j + i]);
+                }
+                Console.WriteLine("");
+            }
+
+            // if (TDengine.ErrorNo(res) != 0)
+            // {
+            //     Console.Write("Query is not complete, Error {0:G}", TDengine.ErrorNo(res), TDengine.Error(res));
+            // }
+            // TDengine.FreeResult(res); Console.WriteLine("");
+        }
+
+        public static List<List<string>> GetResultSet(IntPtr res)
+        {
+            List<List<string>> result = new List<List<string>>();
+            List<string> colName = new List<string>();
+            List<string> dataRaw = new List<string>();
+            if (!IsValidResult(res))
+            {
+                ExitProgram();
+            }
+
+            List<TDengineMeta> metas = GetResField(res);
+            result.Add(colName);
+
+            dataRaw = QueryRes(res, metas);
+            result.Add(dataRaw);
+
+            if (TDengine.ErrorNo(res) != 0)
+            {
+                Console.Write("Query is not complete, Error {0:G}", TDengine.ErrorNo(res), TDengine.Error(res));
+            }
+            return result;
+        }
+
+        public static bool IsValidResult(IntPtr res)
+        {
+            if ((res == IntPtr.Zero) || (TDengine.ErrorNo(res) != 0))
+            {
+                if (res != IntPtr.Zero)
+                {
+                    Console.Write("reason: " + TDengine.Error(res));
+                    return false;
+                }
+                Console.WriteLine("");
+                return false;
+            }
+            return true;
+        }
+        public static void CloseConnection(IntPtr conn)
+        {
+            ExecuteUpdate(conn, "drop database if  exists csharp");
+            if (conn != IntPtr.Zero)
+            {
+                if (TDengine.Close(conn) == 0)
+                {
+                    Console.WriteLine("close connection sucess");
+                }
+                else
+                {
+                    Console.WriteLine("close Connection failed");
+                }
+            }
+        }
+        public static List<TDengineMeta> GetResField(IntPtr res)
+        {
+            List<TDengineMeta> metas = TDengine.FetchFields(res);
+            return metas;
+        }
+        public static void AssertEqual(string expectVal, string actualVal)
+        {
+            if (expectVal == actualVal)
+            {
+                Console.WriteLine("{0}=={1} pass", expectVal, actualVal);
+            }
+            else
+            {
+                Console.WriteLine("{0}=={1} failed", expectVal, actualVal);
+                ExitProgram();
+            }
+        }
+        public static void ExitProgram()
+        {
+            TDengine.Cleanup();
+            System.Environment.Exit(0);
+        }
+        public static List<String> GetResData(IntPtr res)
+        {
+            List<string> colName = new List<string>();
+            List<string> dataRaw = new List<string>();
+            if (!IsValidResult(res))
+            {
+                ExitProgram();
+            }
+            List<TDengineMeta> metas = GetResField(res);
+            dataRaw = QueryRes(res, metas);
+            return dataRaw;
+        }
+
+        public static TDengineMeta ConstructTDengineMeta(string name, string type)
+        {
+
+            TDengineMeta _meta = new TDengineMeta();
+            _meta.name = name;
+            char[] separators = new char[] { '(', ')' };
+            string[] subs = type.Split(separators, StringSplitOptions.RemoveEmptyEntries);
+
+            switch (subs[0].ToUpper())
+            {
+                case "BOOL":
+                    _meta.type = 1;
+                    _meta.size = 1;
+                    break;
+                case "TINYINT":
+                    _meta.type = 2;
+                    _meta.size = 1;
+                    break;
+                case "SMALLINT":
+                    _meta.type = 3;
+                    _meta.size = 2;
+                    break;
+                case "INT":
+                    _meta.type = 4;
+                    _meta.size = 4;
+                    break;
+                case "BIGINT":
+                    _meta.type = 5;
+                    _meta.size = 8;
+                    break;
+                case "TINYINT UNSIGNED":
+                    _meta.type = 11;
+                    _meta.size = 1;
+                    break;
+                case "SMALLINT UNSIGNED":
+                    _meta.type = 12;
+                    _meta.size = 2;
+                    break;
+                case "INT UNSIGNED":
+                    _meta.type = 13;
+                    _meta.size = 4;
+                    break;
+                case "BIGINT UNSIGNED":
+                    _meta.type = 14;
+                    _meta.size = 8;
+                    break;
+                case "FLOAT":
+                    _meta.type = 6;
+                    _meta.size = 4;
+                    break;
+                case "DOUBLE":
+                    _meta.type = 7;
+                    _meta.size = 8;
+                    break;
+                case "BINARY":
+                    _meta.type = 8;
+                    _meta.size = short.Parse(subs[1]);
+                    break;
+                case "TIMESTAMP":
+                    _meta.type = 9;
+                    _meta.size = 8;
+                    break;
+                case "NCHAR":
+                    _meta.type = 10;
+                    _meta.size = short.Parse(subs[1]);
+                    break;
+                case "JSON":
+                    _meta.type = 15;
+                    _meta.size = 4096;
+                    break;
+                default:
+                    _meta.type = byte.MaxValue;
+                    _meta.size = 0;
+                    break;
+            }
+            return _meta;
+        }
+
+        private static List<string> QueryRes(IntPtr res, List<TDengineMeta> metas)
+        {
+            IntPtr rowdata;
+            long queryRows = 0;
+            List<string> dataRaw = new List<string>();
+            int fieldCount = metas.Count;
+            while ((rowdata = TDengine.FetchRows(res)) != IntPtr.Zero)
+            {
+                queryRows++;
+                IntPtr colLengthPtr = TDengine.FetchLengths(res);
+                int[] colLengthArr = new int[fieldCount];
+                Marshal.Copy(colLengthPtr, colLengthArr, 0, fieldCount);
+
+                for (int fields = 0; fields < fieldCount; ++fields)
+                {
+                    TDengineMeta meta = metas[fields];
+                    int offset = IntPtr.Size * fields;
+                    IntPtr data = Marshal.ReadIntPtr(rowdata, offset);
+
+                    if (data == IntPtr.Zero)
+                    {
+                        dataRaw.Add("NULL");
+                        continue;
+                    }
+
+                    switch ((TDengineDataType)meta.type)
+                    {
+                        case TDengineDataType.TSDB_DATA_TYPE_BOOL:
+                            bool v1 = Marshal.ReadByte(data) == 0 ? false : true;
+                            dataRaw.Add(v1.ToString());
+                            break;
+                        case TDengineDataType.TSDB_DATA_TYPE_TINYINT:
+                            sbyte v2 = (sbyte)Marshal.ReadByte(data);
+                            dataRaw.Add(v2.ToString());
+                            break;
+                        case TDengineDataType.TSDB_DATA_TYPE_SMALLINT:
+                            short v3 = Marshal.ReadInt16(data);
+                            dataRaw.Add(v3.ToString());
+                            break;
+                        case TDengineDataType.TSDB_DATA_TYPE_INT:
+                            int v4 = Marshal.ReadInt32(data);
+                            dataRaw.Add(v4.ToString());
+                            break;
+                        case TDengineDataType.TSDB_DATA_TYPE_BIGINT:
+                            long v5 = Marshal.ReadInt64(data);
+                            dataRaw.Add(v5.ToString());
+                            break;
+                        case TDengineDataType.TSDB_DATA_TYPE_FLOAT:
+                            float v6 = (float)Marshal.PtrToStructure(data, typeof(float));
+                            dataRaw.Add(v6.ToString());
+                            break;
+                        case TDengineDataType.TSDB_DATA_TYPE_DOUBLE:
+                            double v7 = (double)Marshal.PtrToStructure(data, typeof(double));
+                            dataRaw.Add(v7.ToString());
+                            break;
+                        case TDengineDataType.TSDB_DATA_TYPE_BINARY:
+                            string v8 = Marshal.PtrToStringAnsi(data, colLengthArr[fields]);
+                            dataRaw.Add(v8);
+                            break;
+                        case TDengineDataType.TSDB_DATA_TYPE_TIMESTAMP:
+                            long v9 = Marshal.ReadInt64(data);
+                            dataRaw.Add(v9.ToString());
+                            break;
+                        case TDengineDataType.TSDB_DATA_TYPE_NCHAR:
+                            string v10 = Marshal.PtrToStringAnsi(data, colLengthArr[fields]);
+                            dataRaw.Add(v10);
+                            break;
+                        case TDengineDataType.TSDB_DATA_TYPE_UTINYINT:
+                            byte v12 = Marshal.ReadByte(data);
+                            dataRaw.Add(v12.ToString());
+                            break;
+                        case TDengineDataType.TSDB_DATA_TYPE_USMALLINT:
+                            ushort v13 = (ushort)Marshal.ReadInt16(data);
+                            dataRaw.Add(v13.ToString());
+                            break;
+                        case TDengineDataType.TSDB_DATA_TYPE_UINT:
+                            uint v14 = (uint)Marshal.ReadInt32(data);
+                            dataRaw.Add(v14.ToString());
+                            break;
+                        case TDengineDataType.TSDB_DATA_TYPE_UBIGINT:
+                            ulong v15 = (ulong)Marshal.ReadInt64(data);
+                            dataRaw.Add(v15.ToString());
+                            break;
+                        default:
+                            dataRaw.Add("unknown value");
+                            break;
+                    }
+                }
+
+            }
+            if (TDengine.ErrorNo(res) != 0)
+            {
+                Console.Write("Query is not complete, Error {0:G}", TDengine.ErrorNo(res), TDengine.Error(res));
+            }
+            TDengine.FreeResult(res);
+            Console.WriteLine("");
+            return dataRaw;
+        }
+
+    }
+}
+
--- a/src/connector/C#/src/test/XUnitTest/TestTDengineMeta.cs
+++ b/src/connector/C#/src/test/XUnitTest/TestTDengineMeta.cs
@@ -6,6 +6,11 @@ namespace TDengineDriver.Test
 {
    public class TestTDengineMeta
    {
+        /// <author>xiaolei</author>
+        /// <Name>TestTDengineMeta.TestTypeNameBool</Name>
+        /// <describe>Unit test for oject TDengineDriver.TDengineMeta's bool meta info</describe>
+        /// <filename>TestTDengineMeta.cs</filename>
+        /// <result>pass or failed </result>
        [Fact]
        public void TestTypeNameBool()
        {
@@ -17,7 +22,11 @@ namespace TDengineDriver.Test
            Assert.Equal(metaTypeName, typeName);

        }
-
+        /// <author>xiaolei</author>
+        /// <Name>TestTDengineMeta.TestTypeNameTINYINT</Name>
+        /// <describe>Unit test for oject TDengineDriver.TDengineMeta's TinnyInt's meta info</describe>
+        /// <filename>TestTDengineMeta.cs</filename>
+        /// <result>pass or failed </result>
        [Fact]
        public void TestTypeNameTINYINT()
        {
@@ -29,6 +38,11 @@ namespace TDengineDriver.Test
            Assert.Equal(metaTypeName, typeName);

        }
+        /// <author>xiaolei</author>
+        /// <Name>TestTDengineMeta.TestTypeNameSMALLINT</Name>
+        /// <describe>Unit test for oject TDengineDriver.TDengineMeta's SMALLINT's meta info</describe>
+        /// <filename>TestTDengineMeta.cs</filename>
+        /// <result>pass or failed </result>
        [Fact]
        public void TestTypeNameSMALLINT()
        {
@@ -40,6 +54,11 @@ namespace TDengineDriver.Test
            Assert.Equal(metaTypeName, typeName);

        }
+        /// <author>xiaolei</author>
+        /// <Name>TestTDengineMeta.TestTypeNameINT</Name>
+        /// <describe>Unit test for oject TDengineDriver.TDengineMeta's INT's meta info</describe>
+        /// <filename>TestTDengineMeta.cs</filename>
+        /// <result>pass or failed </result>
        [Fact]
        public void TestTypeNameINT()
        {
@@ -51,6 +70,11 @@ namespace TDengineDriver.Test
            Assert.Equal(metaTypeName, typeName);

        }
+        /// <author>xiaolei</author>
+        /// <Name>TestTDengineMeta.TestTypeNameBIGINT</Name>
+        /// <describe>Unit test for oject TDengineDriver.TDengineMeta's BIGINT's meta info</describe>
+        /// <filename>TestTDengineMeta.cs</filename>
+        /// <result>pass or failed </result>
        [Fact]
        public void TestTypeNameBIGINT()
        {
@@ -62,6 +86,11 @@ namespace TDengineDriver.Test
            Assert.Equal(metaTypeName, typeName);

        }
+        /// <author>xiaolei</author>
+        /// <Name>TestTDengineMeta.TestTypeNameUTINYINT</Name>
+        /// <describe>Unit test for oject TDengineDriver.TDengineMeta's TINYINT UNSIGNED's meta info</describe>
+        /// <filename>TestTDengineMeta.cs</filename>
+        /// <result>pass or failed </result>
        [Fact]
        public void TestTypeNameUTINYINT()
        {
@@ -73,6 +102,11 @@ namespace TDengineDriver.Test
            Assert.Equal(metaTypeName, typeName);

        }
+        /// <author>xiaolei</author>
+        /// <Name>TestTDengineMeta.TestTypeNameUSMALLINT</Name>
+        /// <describe>Unit test for oject TDengineDriver.TDengineMeta's SMALLINT UNSIGNED's meta info</describe>
+        /// <filename>TestTDengineMeta.cs</filename>
+        /// <result>pass or failed </result>
        [Fact]
        public void TestTypeNameUSMALLINT()
        {
@@ -84,6 +118,11 @@ namespace TDengineDriver.Test
            Assert.Equal(metaTypeName, typeName);

        }
+        /// <author>xiaolei</author>
+        /// <Name>TestTDengineMeta.TestTypeNameUINT</Name>
+        /// <describe>Unit test for oject TDengineDriver.TDengineMeta's INT UNSIGNED's meta info</describe>
+        /// <filename>TestTDengineMeta.cs</filename>
+        /// <result>pass or failed </result>
        [Fact]
        public void TestTypeNameUINT()
        {
@@ -95,6 +134,11 @@ namespace TDengineDriver.Test
            Assert.Equal(metaTypeName, typeName);

        }
+        /// <author>xiaolei</author>
+        /// <Name>TestTDengineMeta.TestTypeNameUBIGINT</Name>
+        /// <describe>Unit test for oject TDengineDriver.TDengineMeta's BIGINT UNSIGNED's meta info</describe>
+        /// <filename>TestTDengineMeta.cs</filename>
+        /// <result>pass or failed </result>
        [Fact]
        public void TestTypeNameUBIGINT()
        {
@@ -106,7 +150,11 @@ namespace TDengineDriver.Test
            Assert.Equal(metaTypeName, typeName);

        }
-
+        /// <author>xiaolei</author>
+        /// <Name>TestTDengineMeta.TestTypeNameFLOAT</Name>
+        /// <describe>Unit test for oject TDengineDriver.TDengineMeta's FLOAT's meta info</describe>
+        /// <filename>TestTDengineMeta.cs</filename>
+        /// <result>pass or failed </result>
        [Fact]
        public void TestTypeNameFLOAT()
        {
@@ -118,6 +166,11 @@ namespace TDengineDriver.Test
            Assert.Equal(metaTypeName, typeName);

        }
+        /// <author>xiaolei</author>
+        /// <Name>TestTDengineMeta.TestTypeNameDOUBLE</Name>
+        /// <describe>Unit test for oject TDengineDriver.TDengineMeta's DOUBLE's meta info</describe>
+        /// <filename>TestTDengineMeta.cs</filename>
+        /// <result>pass or failed </result>
        [Fact]
        public void TestTypeNameDOUBLE()
        {
@@ -129,10 +182,15 @@ namespace TDengineDriver.Test
            Assert.Equal(metaTypeName, typeName);

        }
+        /// <author>xiaolei</author>
+        /// <Name>TestTDengineMeta.TestTypeNameSTRING</Name>
+        /// <describe>Unit test for oject TDengineDriver.TDengineMeta's BINARY's meta info</describe>
+        /// <filename>TestTDengineMeta.cs</filename>
+        /// <result>pass or failed </result>
        [Fact]
        public void TestTypeNameSTRING()
        {
-            string typeName = "STRING";
+            string typeName = "BINARY";
            TDengineDriver.TDengineMeta meta = new TDengineDriver.TDengineMeta();
            meta.type = 8;
            string metaTypeName = meta.TypeName();
@@ -140,6 +198,11 @@ namespace TDengineDriver.Test
            Assert.Equal(metaTypeName, typeName);

        }
+        /// <author>xiaolei</author>
+        /// <Name>TestTDengineMeta.TestTypeNameTIMESTAMP</Name>
+        /// <describe>Unit test for oject TDengineDriver.TDengineMeta's TIMESTAMP's meta info</describe>
+        /// <filename>TestTDengineMeta.cs</filename>
+        /// <result>pass or failed </result>
        [Fact]
        public void TestTypeNameTIMESTAMP()
        {
@@ -151,6 +214,11 @@ namespace TDengineDriver.Test
            Assert.Equal(metaTypeName, typeName);

        }
+        /// <author>xiaolei</author>
+        /// <Name>TestTDengineMeta.TestTypeNameNCHAR</Name>
+        /// <describe>Unit test for oject TDengineDriver.TDengineMeta's NCHAR's meta info</describe>
+        /// <filename>TestTDengineMeta.cs</filename>
+        /// <result>pass or failed </result>
        [Fact]
        public void TestTypeNameNCHAR()
        {
@@ -162,6 +230,11 @@ namespace TDengineDriver.Test
            Assert.Equal(metaTypeName, typeName);

        }
+        /// <author>xiaolei</author>
+        /// <Name>TestTDengineMeta.TestTypeNameUndefined</Name>
+        /// <describe>Unit test for oject TDengineDriver.TDengineMeta's undefine's meta info</describe>
+        /// <filename>TestTDengineMeta.cs</filename>
+        /// <result>pass or failed </result>
        [Fact]
        public void TestTypeNameUndefined()
        {

--- a/src/connector/C#/src/test/XUnitTest/TestTaosBind.cs
+++ b/src/connector/C#/src/test/XUnitTest/TestTaosBind.cs
--- a/src/connector/C#/src/test/XUnitTest/XUnitTest.csproj
+++ b/src/connector/C#/src/test/XUnitTest/XUnitTest.csproj
@@ -3,13 +3,12 @@
  <PropertyGroup>
    <TargetFramework>net5.0</TargetFramework>
    <IsPackable>false</IsPackable>
-  </PropertyGroup>
-
-  <PropertyGroup>
+    <NoWarn>CS1591</NoWarn>
    <GenerateDocumentationFile>true</GenerateDocumentationFile>
    <DocumentationFile>..\doc\UnitTest.XML</DocumentationFile>
  </PropertyGroup>

+
  <ItemGroup>
    <PackageReference Include="coverlet.msbuild" Version="3.1.0">
      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>

--- a/src/connector/jdbc/src/main/java/com/taosdata/jdbc/TSDBConstants.java
+++ b/src/connector/jdbc/src/main/java/com/taosdata/jdbc/TSDBConstants.java
@@ -54,7 +54,7 @@ public abstract class TSDBConstants {
    public static final int TSDB_DATA_TYPE_USMALLINT = 12;      //unsigned smallint
    public static final int TSDB_DATA_TYPE_UINT = 13;           //unsigned int
    public static final int TSDB_DATA_TYPE_UBIGINT = 14;        //unsigned bigint
-
+    public static final int TSDB_DATA_TYPE_JSON = 15;           //json
    // nchar column max length
    public static final int maxFieldSize = 16 * 1024;

@@ -129,6 +129,8 @@ public abstract class TSDBConstants {
                return Types.TIMESTAMP;
            case TSDBConstants.TSDB_DATA_TYPE_NCHAR:
                return Types.NCHAR;
+            case TSDBConstants.TSDB_DATA_TYPE_JSON:
+                return Types.OTHER;
            default:
                throw TSDBError.createSQLException(TSDBErrorNumbers.ERROR_UNKNOWN_TAOS_TYPE, "unknown taos type: " + taosType + " in tdengine");
        }
@@ -160,6 +162,8 @@ public abstract class TSDBConstants {
                return "TIMESTAMP";
            case TSDBConstants.TSDB_DATA_TYPE_NCHAR:
                return "NCHAR";
+            case TSDBConstants.TSDB_DATA_TYPE_JSON:
+                return "JSON";
            default:
                throw TSDBError.createSQLException(TSDBErrorNumbers.ERROR_UNKNOWN_TAOS_TYPE, "unknown taos type: " + taosType + " in tdengine");
        }

--- a/src/connector/jdbc/src/main/java/com/taosdata/jdbc/TSDBPreparedStatement.java
+++ b/src/connector/jdbc/src/main/java/com/taosdata/jdbc/TSDBPreparedStatement.java
@@ -615,6 +615,18 @@ public class TSDBPreparedStatement extends TSDBStatement implements PreparedStat
        }
    }

+    public void setTagJson(int index, String value) {
+        ensureTagCapacity(index);
+        this.tableTags.set(index, new TableTagInfo(value, TSDBConstants.TSDB_DATA_TYPE_JSON));
+
+        String charset = TaosGlobalConfig.getCharset();
+        try {
+            this.tagValueLength += value.getBytes(charset).length;
+        } catch (UnsupportedEncodingException e) {
+            throw new RuntimeException(e.getMessage());
+        }
+    }
+
    public <T> void setValueImpl(int columnIndex, ArrayList<T> list, int type, int bytes) throws SQLException {
        if (this.colData.size() == 0) {
            this.colData.addAll(Collections.nCopies(this.parameters.length - 1 - this.tableTags.size(), null));
@@ -774,6 +786,7 @@ public class TSDBPreparedStatement extends TSDBStatement implements PreparedStat
                    }

                    case TSDBConstants.TSDB_DATA_TYPE_NCHAR:
+                    case TSDBConstants.TSDB_DATA_TYPE_JSON:
                    case TSDBConstants.TSDB_DATA_TYPE_BINARY: {
                        String charset = TaosGlobalConfig.getCharset();
                        String val = (String) tag.value;

--- a/src/connector/jdbc/src/main/java/com/taosdata/jdbc/TSDBResultSetBlockData.java
+++ b/src/connector/jdbc/src/main/java/com/taosdata/jdbc/TSDBResultSetBlockData.java
@@ -151,6 +151,7 @@ public class TSDBResultSetBlockData {
                this.colData.set(col, lb);
                break;
            }
+            case TSDBConstants.TSDB_DATA_TYPE_JSON:
            case TSDBConstants.TSDB_DATA_TYPE_NCHAR: {
                ByteBuffer buf = ByteBuffer.wrap(value, 0, length);
                buf.order(ByteOrder.LITTLE_ENDIAN);
@@ -199,6 +200,7 @@ public class TSDBResultSetBlockData {
            }

            case TSDBConstants.TSDB_DATA_TYPE_NCHAR:
+            case TSDBConstants.TSDB_DATA_TYPE_JSON:
            case TSDBConstants.TSDB_DATA_TYPE_BINARY: {
                return Integer.parseInt((String) obj);
            }
@@ -232,6 +234,7 @@ public class TSDBResultSetBlockData {
            }

            case TSDBConstants.TSDB_DATA_TYPE_NCHAR:
+            case TSDBConstants.TSDB_DATA_TYPE_JSON:
            case TSDBConstants.TSDB_DATA_TYPE_BINARY: {
                if ("TRUE".compareToIgnoreCase((String) obj) == 0) {
                    return Boolean.TRUE;
@@ -271,6 +274,7 @@ public class TSDBResultSetBlockData {
            }

            case TSDBConstants.TSDB_DATA_TYPE_NCHAR:
+            case TSDBConstants.TSDB_DATA_TYPE_JSON:
            case TSDBConstants.TSDB_DATA_TYPE_BINARY: {
                return Long.parseLong((String) obj);
            }
@@ -308,6 +312,7 @@ public class TSDBResultSetBlockData {
            }

            case TSDBConstants.TSDB_DATA_TYPE_NCHAR:
+            case TSDBConstants.TSDB_DATA_TYPE_JSON:
            case TSDBConstants.TSDB_DATA_TYPE_BINARY: {
                return Double.parseDouble((String) obj);
            }
@@ -406,6 +411,7 @@ public class TSDBResultSetBlockData {
                return new String(dest);
            }

+            case TSDBConstants.TSDB_DATA_TYPE_JSON:
            case TSDBConstants.TSDB_DATA_TYPE_NCHAR: {
                ByteBuffer bb = (ByteBuffer) this.colData.get(col);
                bb.position((fieldSize + BINARY_LENGTH_OFFSET) * this.rowIndex);

--- a/src/connector/jdbc/src/main/java/com/taosdata/jdbc/TSDBResultSetRowData.java
+++ b/src/connector/jdbc/src/main/java/com/taosdata/jdbc/TSDBResultSetRowData.java
@@ -78,6 +78,7 @@ public class TSDBResultSetRowData {
            case TSDBConstants.TSDB_DATA_TYPE_BIGINT:
                return ((Long) obj) == 1L ? Boolean.TRUE : Boolean.FALSE;
            case TSDBConstants.TSDB_DATA_TYPE_BINARY:
+            case TSDBConstants.TSDB_DATA_TYPE_JSON:
            case TSDBConstants.TSDB_DATA_TYPE_NCHAR: {
                return obj.toString().contains("1");
            }
@@ -147,6 +148,7 @@ public class TSDBResultSetRowData {
                return ((Long) obj).intValue();
            case TSDBConstants.TSDB_DATA_TYPE_NCHAR:
            case TSDBConstants.TSDB_DATA_TYPE_BINARY:
+            case TSDBConstants.TSDB_DATA_TYPE_JSON:
                return Integer.parseInt((String) obj);
            case TSDBConstants.TSDB_DATA_TYPE_UTINYINT:
                return parseUnsignedTinyIntToInt(obj);
@@ -228,6 +230,7 @@ public class TSDBResultSetRowData {
                return (Long) obj;
            case TSDBConstants.TSDB_DATA_TYPE_NCHAR:
            case TSDBConstants.TSDB_DATA_TYPE_BINARY:
+            case TSDBConstants.TSDB_DATA_TYPE_JSON:
                return Long.parseLong((String) obj);
            case TSDBConstants.TSDB_DATA_TYPE_UTINYINT: {
                byte value = (byte) obj;
@@ -418,6 +421,7 @@ public class TSDBResultSetRowData {
            case TSDBConstants.TSDB_DATA_TYPE_BINARY:
                return new String((byte[]) obj);
            case TSDBConstants.TSDB_DATA_TYPE_NCHAR:
+            case TSDBConstants.TSDB_DATA_TYPE_JSON:
                return (String) obj;
            default:
                return String.valueOf(obj);

--- a/src/connector/jdbc/src/main/java/com/taosdata/jdbc/rs/RestfulResultSet.java
+++ b/src/connector/jdbc/src/main/java/com/taosdata/jdbc/rs/RestfulResultSet.java
 package com.taosdata.jdbc.rs;

+import com.alibaba.fastjson.JSON;
 import com.alibaba.fastjson.JSONArray;
 import com.alibaba.fastjson.JSONObject;
+import com.alibaba.fastjson.serializer.SerializerFeature;
 import com.google.common.primitives.Ints;
 import com.google.common.primitives.Longs;
 import com.google.common.primitives.Shorts;
@@ -184,6 +186,11 @@ public class RestfulResultSet extends AbstractResultSet implements ResultSet {
                return row.getString(colIndex) == null ? null : row.getString(colIndex).getBytes();
            case TSDBConstants.TSDB_DATA_TYPE_NCHAR:
                return row.getString(colIndex) == null ? null : row.getString(colIndex);
+            case TSDBConstants.TSDB_DATA_TYPE_JSON:
+                //  all json tag or just a json tag value
+                return row.get(colIndex) != null && (row.get(colIndex) instanceof String || row.get(colIndex) instanceof JSONObject)
+                        ? JSON.toJSONString(row.get(colIndex), SerializerFeature.WriteMapNullValue)
+                        : row.get(colIndex);
            default:
                return row.get(colIndex);
        }

--- a/src/connector/jdbc/src/test/java/com/taosdata/jdbc/JsonTagTest.java
+++ b/src/connector/jdbc/src/test/java/com/taosdata/jdbc/JsonTagTest.java
@@ -8,6 +8,8 @@ import org.junit.runner.RunWith;
 import org.junit.runners.MethodSorters;

 import java.sql.*;
+import java.util.ArrayList;
+import java.util.Random;

 @FixMethodOrder(MethodSorters.NAME_ASCENDING)
 @RunWith(CatalogRunner.class)
@@ -197,6 +199,8 @@ public class JsonTagTest {
    @Description("select json tag from stable")
    public void case04_select03() throws SQLException {
        ResultSet resultSet = statement.executeQuery("select jtag from jsons1");
+        ResultSetMetaData metaData = resultSet.getMetaData();
+        metaData.getColumnTypeName(1);
        int count = 0;
        while (resultSet.next()) {
            count++;
@@ -1176,6 +1180,110 @@ public class JsonTagTest {
        close(resultSet);
    }

+    @Test
+    @Description("query metadata for json")
+    public void case19_selectMetadata01() throws SQLException {
+        ResultSet resultSet = statement.executeQuery("select jtag from jsons1");
+        ResultSetMetaData metaData = resultSet.getMetaData();
+        int columnType = metaData.getColumnType(1);
+        String columnTypeName = metaData.getColumnTypeName(1);
+        Assert.assertEquals(Types.OTHER, columnType);
+        Assert.assertEquals("JSON", columnTypeName);
+        close(resultSet);
+    }
+
+    @Test
+    @Description("query metadata for json")
+    public void case19_selectMetadata02() throws SQLException {
+        ResultSet resultSet = statement.executeQuery("select *,jtag from jsons1");
+        ResultSetMetaData metaData = resultSet.getMetaData();
+        int columnType = metaData.getColumnType(6);
+        String columnTypeName = metaData.getColumnTypeName(6);
+        Assert.assertEquals(Types.OTHER, columnType);
+        Assert.assertEquals("JSON", columnTypeName);
+        close(resultSet);
+    }
+
+    @Test
+    @Description("query metadata for one json result")
+    public void case19_selectMetadata03() throws SQLException {
+        ResultSet resultSet = statement.executeQuery("select jtag->'tag1' from jsons1_6");
+        ResultSetMetaData metaData = resultSet.getMetaData();
+        int columnType = metaData.getColumnType(1);
+        String columnTypeName = metaData.getColumnTypeName(1);
+        Assert.assertEquals(Types.OTHER, columnType);
+        Assert.assertEquals("JSON", columnTypeName);
+        resultSet.next();
+        String string = resultSet.getString(1);
+        Assert.assertEquals("11", string);
+        close(resultSet);
+    }
+
+    @Test
+    @Description("stmt batch insert with json tag")
+    public void case20_batchInsert() throws SQLException {
+        String jsonTag = "{\"tag1\":\"fff\",\"tag2\":5,\"tag3\":true}";
+        statement.execute("drop table if exists jsons5");
+        statement.execute("CREATE STABLE IF NOT EXISTS jsons5 (ts timestamp, dataInt int, dataStr nchar(20)) TAGS(jtag json)");
+
+        String sql = "INSERT INTO ? USING jsons5 TAGS (?) VALUES ( ?,?,? )";
+
+        try (PreparedStatement pst = connection.prepareStatement(sql)) {
+            TSDBPreparedStatement ps = pst.unwrap(TSDBPreparedStatement.class);
+            // 设定数据表名：
+            ps.setTableName("batch_test");
+            // 设定 TAGS 取值 setTagNString or setTagJson：
+//            ps.setTagNString(0, jsonTag);
+            ps.setTagJson(0, jsonTag);
+
+            // VALUES 部分以逐列的方式进行设置：
+            int numOfRows = 4;
+            ArrayList<Long> ts = new ArrayList<>();
+            for (int i = 0; i < numOfRows; i++) {
+                ts.add(System.currentTimeMillis() + i);
+            }
+            ps.setTimestamp(0, ts);
+
+            Random r = new Random();
+            int random = 10 + r.nextInt(5);
+            ArrayList<Integer> c1 = new ArrayList<>();
+            for (int i = 0; i < numOfRows; i++) {
+                if (i % random == 0) {
+                    c1.add(null);
+                } else {
+                    c1.add(r.nextInt());
+                }
+            }
+            ps.setInt(1, c1);
+
+            ArrayList<String> c2 = new ArrayList<>();
+            for (int i = 0; i < numOfRows; i++) {
+                c2.add("分支" + i % 4);
+            }
+            ps.setNString(2, c2, 10);
+
+            // AddBatch 之后，缓存并未清空。为避免混乱，并不推荐在 ExecuteBatch 之前再次绑定新一批的数据：
+            ps.columnDataAddBatch();
+            // 执行绑定数据后的语句：
+            ps.columnDataExecuteBatch();
+        }
+
+        ResultSet resultSet = statement.executeQuery("select jtag from batch_test");
+        ResultSetMetaData metaData = resultSet.getMetaData();
+        String columnName = metaData.getColumnName(1);
+        Assert.assertEquals("jtag", columnName);
+        Assert.assertEquals("JSON", metaData.getColumnTypeName(1));
+        resultSet.next();
+        String string = resultSet.getString(1);
+        Assert.assertEquals(jsonTag, string);
+        resultSet.close();
+        resultSet = statement.executeQuery("select jtag->'tag2' from batch_test");
+        resultSet.next();
+        long l = resultSet.getLong(1);
+        Assert.assertEquals(5, l);
+        resultSet.close();
+    }
+
    private void close(ResultSet resultSet) {
        try {
            if (null != resultSet) {

--- a/src/connector/jdbc/src/test/java/com/taosdata/jdbc/rs/RestfulJsonTagTest.java
+++ b/src/connector/jdbc/src/test/java/com/taosdata/jdbc/rs/RestfulJsonTagTest.java
--- a/src/dnode/src/dnodeMain.c
+++ b/src/dnode/src/dnodeMain.c
@@ -240,7 +240,7 @@ static void dnodeCheckDataDirOpenned(char *dir) {
  char filepath[256] = {0};
  sprintf(filepath, "%s/.running", dir);

-  int fd = open(filepath, O_WRONLY | O_CREAT | O_TRUNC, S_IRWXU | S_IRWXG | S_IRWXO);
+  int fd = open(filepath, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY, S_IRWXU | S_IRWXG | S_IRWXO);
  if (fd < 0) {
    dError("failed to open lock file:%s, reason: %s, quit", filepath, strerror(errno));
    exit(0);

--- a/src/dnode/src/dnodeTelemetry.c
+++ b/src/dnode/src/dnodeTelemetry.c
@@ -266,7 +266,7 @@ static void* telemetryThread(void* param) {
 }

 static void dnodeGetEmail(char* filepath) {
-  int32_t fd = open(filepath, O_RDONLY);
+  int32_t fd = open(filepath, O_RDONLY | O_BINARY);
  if (fd < 0) {
    return;
  }

--- a/src/inc/tfs.h
+++ b/src/inc/tfs.h
@@ -70,7 +70,7 @@ typedef struct {
 #define TFILE_NAME(pf) ((pf)->aname)
 #define TFILE_REL_NAME(pf) ((pf)->rname)

-#define tfsopen(pf, flags) open(TFILE_NAME(pf), flags)
+#define tfsopen(pf, flags) open(TFILE_NAME(pf), flags | O_BINARY)
 #define tfsclose(fd) close(fd)
 #define tfsremove(pf) remove(TFILE_NAME(pf))
 #define tfscopy(sf, df) taosCopy(TFILE_NAME(sf), TFILE_NAME(df))

--- a/src/inc/tsdb.h
+++ b/src/inc/tsdb.h
@@ -173,6 +173,7 @@ typedef void *TsdbQueryHandleT;  // Use void to hide implementation details
 typedef struct STsdbQueryCond {
  STimeWindow  twindow;
  int32_t      order;             // desc|asc order to iterate the data block
+  int64_t      offset;            // skip offset put down to tsdb
  int32_t      numOfCols;
  SColumnInfo *colList;
  bool         loadExternalRows;  // load external rows or not
@@ -393,6 +394,9 @@ void tsdbResetQueryHandleForNewTable(TsdbQueryHandleT queryHandle, STsdbQueryCon

 int32_t tsdbGetFileBlocksDistInfo(TsdbQueryHandleT* queryHandle, STableBlockDist* pTableBlockInfo);

+// obtain queryHandle attribute
+int64_t tsdbSkipOffset(TsdbQueryHandleT queryHandle);
+
 /**
 * get the statistics of repo usage
 * @param repo. point to the tsdbrepo

--- a/src/kit/shell/src/shellCheck.c
+++ b/src/kit/shell/src/shellCheck.c
@@ -131,7 +131,7 @@ static void *shellCheckThreadFp(void *arg) {
    char *tbname = tbNames[t];
    if (tbname == NULL) break;

-    snprintf(sql, SHELL_SQL_LEN, "select last_row(_c0) from %s;", tbname);
+    snprintf(sql, SHELL_SQL_LEN, "select count(*) from %s;", tbname);

    TAOS_RES *pSql = taos_query(pThread->taos, sql);
    int32_t   code = taos_errno(pSql);

--- a/taos-tools @ 59f00a69
+++ b/taos-tools @ 59f00a69
-Subproject commit 27751ba9ca17407425fb50a52cd68295794dedc3
+Subproject commit 59f00a69f36b08cea86a70a22c29b2c27ef506ae
--- a/src/mnode/inc/mnodeVgroup.h
+++ b/src/mnode/inc/mnodeVgroup.h
@@ -43,7 +43,7 @@ void    mnodeCheckUnCreatedVgroup(SDnodeObj *pDnode, SVnodeLoad *pVloads, int32_
 int32_t mnodeCreateVgroup(struct SMnodeMsg *pMsg);
 void    mnodeDropVgroup(SVgObj *pVgroup, void *ahandle);
 void    mnodeAlterVgroup(SVgObj *pVgroup, void *ahandle);
-int32_t mnodeGetAvailableVgroup(struct SMnodeMsg *pMsg, SVgObj **pVgroup, int32_t *sid);
+int32_t mnodeGetAvailableVgroup(struct SMnodeMsg *pMsg, SVgObj **pVgroup, int32_t *sid, int32_t vgId);

 int32_t mnodeAddTableIntoVgroup(SVgObj *pVgroup, SCTableObj *pTable, bool needCheck);
 void    mnodeRemoveTableFromVgroup(SVgObj *pVgroup, SCTableObj *pTable);

--- a/src/mnode/src/mnodeTable.c
+++ b/src/mnode/src/mnodeTable.c
@@ -48,6 +48,12 @@
 #define CREATE_CTABLE_RETRY_TIMES 10
 #define CREATE_CTABLE_RETRY_SEC   14

+// informal
+#define META_SYNC_TABLE_NAME "_taos_meta_sync_table_name_taos_"
+#define META_SYNC_TABLE_NAME_LEN 32
+static int32_t tsMetaSyncOption = 0;
+// informal
+
 int64_t          tsCTableRid = -1;
 static void *    tsChildTableSdb;
 int64_t          tsSTableRid = -1;
@@ -1726,6 +1732,9 @@ int32_t mnodeRetrieveShowSuperTables(SShowObj *pShow, char *data, int32_t rows,
    cols++;

    numOfRows++;
+
+    mDebug("stable: %s, uid: %" PRIu64, prefix, pTable->uid);
+
    mnodeDecTableRef(pTable);
  }

@@ -2227,9 +2236,19 @@ static int32_t mnodeProcessCreateChildTableMsg(SMnodeMsg *pMsg) {
    if (pMsg->pTable == NULL) {
      SVgObj *pVgroup = NULL;
      int32_t tid = 0;
-      code = mnodeGetAvailableVgroup(pMsg, &pVgroup, &tid);
+      int32_t vgId = 0;
+
+      if (tsMetaSyncOption) {
+        char *pTbName = strchr(pCreate->tableName, '.');
+        if (pTbName && (pTbName = strchr(pTbName + 1, '.'))) {
+          if (0 == strncmp(META_SYNC_TABLE_NAME, ++pTbName, META_SYNC_TABLE_NAME_LEN)) {
+            vgId = atoi(pTbName + META_SYNC_TABLE_NAME_LEN);
+          }
+        }
+      }
+      code = mnodeGetAvailableVgroup(pMsg, &pVgroup, &tid, vgId);
      if (code != TSDB_CODE_SUCCESS) {
-        mDebug("msg:%p, app:%p table:%s, failed to get available vgroup, reason:%s", pMsg, pMsg->rpcMsg.ahandle,
+        mError("msg:%p, app:%p table:%s, failed to get available vgroup, reason:%s", pMsg, pMsg->rpcMsg.ahandle,
               pCreate->tableName, tstrerror(code));
        return code;
      }

--- a/src/mnode/src/mnodeVgroup.c
+++ b/src/mnode/src/mnodeVgroup.c
--- a/src/os/src/detail/osRand.c
+++ b/src/os/src/detail/osRand.c
@@ -22,7 +22,7 @@ uint32_t taosSafeRand(void) {
  int fd;
  int seed;

-  fd = open("/dev/urandom", 0);
+  fd = open("/dev/urandom", 0 | O_BINARY);
  if (fd < 0) {
    seed = (int)time(0);
  } else {

--- a/src/os/src/detail/osSysinfo.c
+++ b/src/os/src/detail/osSysinfo.c
@@ -713,7 +713,7 @@ bool taosGetSystemUid(char *uid) {
  int fd;
  int len = 0;

-  fd = open("/proc/sys/kernel/random/uuid", 0);
+  fd = open("/proc/sys/kernel/random/uuid", 0 | O_BINARY);
  if (fd < 0) {
    return false;
  } else {

--- a/src/os/src/detail/osTimer.c
+++ b/src/os/src/detail/osTimer.c
--- a/src/os/src/linux/linuxEnv.c
+++ b/src/os/src/linux/linuxEnv.c
@@ -72,7 +72,7 @@ char* taosGetCmdlineByPID(int pid) {
  static char cmdline[1024];
  sprintf(cmdline, "/proc/%d/cmdline", pid);

-  int fd = open(cmdline, O_RDONLY);
+  int fd = open(cmdline, O_RDONLY | O_BINARY);
  if (fd >= 0) {
    int n = read(fd, cmdline, sizeof(cmdline) - 1);
    if (n < 0) n = 0;

--- a/src/plugins/http/src/httpResp.c
+++ b/src/plugins/http/src/httpResp.c
--- a/src/plugins/monitor/src/monMain.c
+++ b/src/plugins/monitor/src/monMain.c
--- a/taosadapter @ 47fb0b3e
+++ b/taosadapter @ 47fb0b3e
-Subproject commit 273b5219f8bcc604e43beebc6f1f95abed85170a
+Subproject commit 47fb0b3e627ddadf1ca983c1d75b9a4e44cd98fd
--- a/src/query/inc/qExecutor.h
+++ b/src/query/inc/qExecutor.h
--- a/src/query/src/qAggMain.c
+++ b/src/query/src/qAggMain.c
--- a/src/query/src/qExecutor.c
+++ b/src/query/src/qExecutor.c
--- a/src/query/src/qFill.c
+++ b/src/query/src/qFill.c
--- a/src/rpc/test/rserver.c
+++ b/src/rpc/test/rserver.c
--- a/src/sync/test/syncServer.c
+++ b/src/sync/test/syncServer.c
--- a/src/tfs/src/tfs.c
+++ b/src/tfs/src/tfs.c
--- a/src/tsdb/inc/tsdbFile.h
+++ b/src/tsdb/inc/tsdbFile.h
--- a/src/tsdb/src/tsdbRead.c
+++ b/src/tsdb/src/tsdbRead.c
--- a/src/util/inc/tconfig.h
+++ b/src/util/inc/tconfig.h
--- a/src/util/inc/tutil.h
+++ b/src/util/inc/tutil.h
--- a/src/util/src/tlog.c
+++ b/src/util/src/tlog.c
--- a/src/util/src/tnote.c
+++ b/src/util/src/tnote.c
--- a/src/util/src/tutil.c
+++ b/src/util/src/tutil.c
--- a/tests/develop-test/2-query/session_two_stage.py
+++ b/tests/develop-test/2-query/session_two_stage.py
--- a/tests/develop-test/2-query/timeline_agg_func_groupby.py
+++ b/tests/develop-test/2-query/timeline_agg_func_groupby.py
--- a/tests/develop-test/3-connectors/c#/test.sh
+++ b/tests/develop-test/3-connectors/c#/test.sh
--- a/tests/develop-test/5-taos-tools/taosdump/taosdumpTestTypeBigInt.py
+++ b/tests/develop-test/5-taos-tools/taosdump/taosdumpTestTypeBigInt.py
--- a/tests/develop-test/5-taos-tools/taosdump/taosdumpTestTypeBool.py
+++ b/tests/develop-test/5-taos-tools/taosdump/taosdumpTestTypeBool.py
--- a/tests/develop-test/5-taos-tools/taosdump/taosdumpTestTypeDouble.py
+++ b/tests/develop-test/5-taos-tools/taosdump/taosdumpTestTypeDouble.py
--- a/tests/develop-test/5-taos-tools/taosdump/taosdumpTestTypeFloat.py
+++ b/tests/develop-test/5-taos-tools/taosdump/taosdumpTestTypeFloat.py
--- a/tests/develop-test/5-taos-tools/taosdump/taosdumpTestTypeInt.py
+++ b/tests/develop-test/5-taos-tools/taosdump/taosdumpTestTypeInt.py
--- a/tests/develop-test/5-taos-tools/taosdump/taosdumpTestTypeJson.py
+++ b/tests/develop-test/5-taos-tools/taosdump/taosdumpTestTypeJson.py
--- a/tests/develop-test/5-taos-tools/taosdump/taosdumpTestTypeSmallInt.py
+++ b/tests/develop-test/5-taos-tools/taosdump/taosdumpTestTypeSmallInt.py
--- a/tests/develop-test/5-taos-tools/taosdump/taosdumpTestTypeTinyInt.py
+++ b/tests/develop-test/5-taos-tools/taosdump/taosdumpTestTypeTinyInt.py
--- a/tests/develop-test/fulltest-query.sh
+++ b/tests/develop-test/fulltest-query.sh
--- a/tests/examples/C#/.gitignore
+++ b/tests/examples/C#/.gitignore
@@ -11,3 +11,5 @@ stmt/bin/
 stmt/obj/
 taosdemo/bin/
 taosdemo/obj/
+jsonTag/bin/
+jsonTag/obj/
--- a/src/connector/C#/src/test/Cases/JsonTag.cs
+++ b/src/connector/C#/src/test/Cases/JsonTag.cs
--- a/src/connector/C#/src/test/Cases/Utils.cs
+++ b/src/connector/C#/src/test/Cases/Utils.cs
--- a/src/connector/C#/src/test/Cases/Cases.csproj
+++ b/src/connector/C#/src/test/Cases/Cases.csproj
--- a/tests/examples/C#/stmt/StmtDemo.cs
+++ b/tests/examples/C#/stmt/StmtDemo.cs
--- a/tests/examples/C#/stmt/stmt.csproj
+++ b/tests/examples/C#/stmt/stmt.csproj
--- a/tests/examples/JDBC/connectionPools/pom.xml
+++ b/tests/examples/JDBC/connectionPools/pom.xml
--- a/tests/examples/JDBC/taosdemo/pom.xml
+++ b/tests/examples/JDBC/taosdemo/pom.xml
--- a/tests/perftest-scripts/HttpPerfCompare.py
+++ b/tests/perftest-scripts/HttpPerfCompare.py
--- a/tests/perftest-scripts/specifyColsComparison.py
+++ b/tests/perftest-scripts/specifyColsComparison.py
--- a/tests/pytest/fulltest-insert.sh
+++ b/tests/pytest/fulltest-insert.sh
--- a/tests/pytest/fulltest-others.sh
+++ b/tests/pytest/fulltest-others.sh
--- a/tests/pytest/fulltest-query.sh
+++ b/tests/pytest/fulltest-query.sh
--- a/tests/pytest/fulltest-tools.sh
+++ b/tests/pytest/fulltest-tools.sh
--- a/tests/pytest/fulltest.sh
+++ b/tests/pytest/fulltest.sh
--- a/tests/pytest/functions/function_derivative.py
+++ b/tests/pytest/functions/function_derivative.py
--- a/tests/pytest/functions/function_elapsed_case.py
+++ b/tests/pytest/functions/function_elapsed_case.py
--- a/tests/pytest/query/nestedQuery/nestedQuery_datacheck.py
+++ b/tests/pytest/query/nestedQuery/nestedQuery_datacheck.py
--- a/tests/pytest/query/queryBase.py
+++ b/tests/pytest/query/queryBase.py
--- a/tests/pytest/query/queryLimit.py
+++ b/tests/pytest/query/queryLimit.py
--- a/tests/pytest/query/queryPriKey.py
+++ b/tests/pytest/query/queryPriKey.py
--- a/tests/pytest/tools/taosdemoAllTest/NanoTestCase/taosdemoTestSupportNanoInsert.py
+++ b/tests/pytest/tools/taosdemoAllTest/NanoTestCase/taosdemoTestSupportNanoInsert.py
--- a/tests/pytest/tools/taosdemoAllTest/insert-chinese-sml.json
+++ b/tests/pytest/tools/taosdemoAllTest/insert-chinese-sml.json
--- a/tests/pytest/tools/taosdemoAllTest/insert-chinese.json
+++ b/tests/pytest/tools/taosdemoAllTest/insert-chinese.json
--- a/tests/pytest/tools/taosdemoAllTest/sml/insert-sml-json-alltype.json
+++ b/tests/pytest/tools/taosdemoAllTest/sml/insert-sml-json-alltype.json
--- a/tests/pytest/tools/taosdemoAllTest/sml/insert-sml-telnet-alltype.json
+++ b/tests/pytest/tools/taosdemoAllTest/sml/insert-sml-telnet-alltype.json
--- a/tests/pytest/tools/taosdemoAllTest/taosdemoTestInsertWithJson.py
+++ b/tests/pytest/tools/taosdemoAllTest/taosdemoTestInsertWithJson.py
--- a/tests/pytest/tools/taosdemoAllTest/taosdemoTestInsertWithJsonStmt.py
+++ b/tests/pytest/tools/taosdemoAllTest/taosdemoTestInsertWithJsonStmt.py
--- a/tests/pytest/tools/taosdumpTest2.py
+++ b/tests/pytest/tools/taosdumpTest2.py
--- a/tests/script/general/parser/where.sim
+++ b/tests/script/general/parser/where.sim
--- a/tests/script/jenkins/basic.txt
+++ b/tests/script/jenkins/basic.txt
--- a/tests/script/unique/migrate/mn2_vn2_repl2_rmMnodeDir.sim
+++ b/tests/script/unique/migrate/mn2_vn2_repl2_rmMnodeDir.sim
--- a/tests/script/unique/migrate/mn2_vn2_repl2_rmMnodeVnodeDir.sim
+++ b/tests/script/unique/migrate/mn2_vn2_repl2_rmMnodeVnodeDir.sim
--- a/tests/script/unique/migrate/mn2_vn2_repl2_rmVnodeDir.sim
+++ b/tests/script/unique/migrate/mn2_vn2_repl2_rmVnodeDir.sim
--- a/tests/system-test/2-query/TD-11483.py
+++ b/tests/system-test/2-query/TD-11483.py
--- a/tests/system-test/2-query/TD-11561.py
+++ b/tests/system-test/2-query/TD-11561.py
--- a/tests/system-test/2-query/TD-11943.py
+++ b/tests/system-test/2-query/TD-11943.py
--- a/tests/system-test/2-query/TD-11969.py
+++ b/tests/system-test/2-query/TD-11969.py
--- a/tests/system-test/2-query/TD-11978.py
+++ b/tests/system-test/2-query/TD-11978.py
--- a/tests/system-test/2-query/TD-12014.py
+++ b/tests/system-test/2-query/TD-12014.py
--- a/tests/system-test/2-query/TD-12145.py
+++ b/tests/system-test/2-query/TD-12145.py
--- a/tests/system-test/2-query/TD-12164.py
+++ b/tests/system-test/2-query/TD-12164.py
--- a/tests/system-test/2-query/TD-12165.py
+++ b/tests/system-test/2-query/TD-12165.py
--- a/tests/system-test/2-query/TD-12228.py
+++ b/tests/system-test/2-query/TD-12228.py
--- a/tests/system-test/2-query/TD-12229.py
+++ b/tests/system-test/2-query/TD-12229.py
--- a/tests/system-test/2-query/TD-12344.py
+++ b/tests/system-test/2-query/TD-12344.py
--- a/tests/system-test/2-query/TD-12388.py
+++ b/tests/system-test/2-query/TD-12388.py
--- a/tests/system-test/2-query/TD-12593.py
+++ b/tests/system-test/2-query/TD-12593.py
--- a/tests/system-test/2-query/TD-12594.py
+++ b/tests/system-test/2-query/TD-12594.py
--- a/tests/system-test/2-query/TD-12614.py
+++ b/tests/system-test/2-query/TD-12614.py
--- a/tests/system-test/2-query/function_elapsed.py
+++ b/tests/system-test/2-query/function_elapsed.py
--- a/tests/system-test/3-connectors/nodejs/test.sh
+++ b/tests/system-test/3-connectors/nodejs/test.sh
--- a/tests/system-test/5-taos-tools/dump_col_tag.py
+++ b/tests/system-test/5-taos-tools/dump_col_tag.py
--- a/tests/system-test/fulltest-query.sh
+++ b/tests/system-test/fulltest-query.sh
--- a/tests/system-test/fulltest-tools.sh
+++ b/tests/system-test/fulltest-tools.sh
--- a/tests/test-CI.sh
+++ b/tests/test-CI.sh