diff --git a/documentation20/cn/11.administrator/docs.md b/documentation20/cn/11.administrator/docs.md
index a04848553aeef04fc57b2d42b92d4b84ad29c87d..8ce6732efec4da35683913e8f73082f98f88f89d 100644
--- a/documentation20/cn/11.administrator/docs.md
+++ b/documentation20/cn/11.administrator/docs.md
@@ -557,7 +557,7 @@ KILL STREAM <stream-id>;
 
 TDengine启动后，会自动创建一个监测数据库log，并自动将服务器的CPU、内存、硬盘空间、带宽、请求数、磁盘读写速度、慢查询等信息定时写入该数据库。TDengine还将重要的系统操作（比如登录、创建、删除数据库等）日志以及各种错误报警信息记录下来存放在log库里。系统管理员可以从CLI直接查看这个数据库，也可以在WEB通过图形化界面查看这些监测信息。
 
-这些监测信息的采集缺省是打开的，但可以修改配置文件里的选项enableMonitor将其关闭或打开。
+这些监测信息的采集缺省是打开的，但可以修改配置文件里的选项monitor将其关闭或打开。
 
 ### TDinsight - 使用监控数据库 + Grafana 对 TDengine 进行监控的解决方案
 
diff --git a/packaging/deb/makedeb.sh b/packaging/deb/makedeb.sh
index de365ae127bfb0509d8a3d67bc37e576bd61dc0f..f2d6dcde4b2eb8e7b5ff8eb06067a8426e1d3f91 100755
--- a/packaging/deb/makedeb.sh
+++ b/packaging/deb/makedeb.sh
@@ -58,7 +58,6 @@ cp ${compile_dir}/../packaging/tools/startPre.sh    ${pkg_dir}${install_home_pat
 cp ${compile_dir}/../packaging/tools/set_core.sh    ${pkg_dir}${install_home_path}/bin
 cp ${compile_dir}/../packaging/tools/taosd-dump-cfg.gdb    ${pkg_dir}${install_home_path}/bin
 
-cp ${compile_dir}/build/bin/taosdemo                ${pkg_dir}${install_home_path}/bin
 cp ${compile_dir}/build/bin/taosd                   ${pkg_dir}${install_home_path}/bin
 
 if [ -f "${compile_dir}/build/bin/taosadapter" ]; then
diff --git a/packaging/release.sh b/packaging/release.sh
index 19a0a7702bb25bf60efd9bff4af166a1336d721f..8eaf18774232e10c0435d1bf9e78ed42e16bdac6 100755
--- a/packaging/release.sh
+++ b/packaging/release.sh
@@ -518,7 +518,7 @@ if [ "$osType" != "Darwin" ]; then
           cd ${top_dir}/src/kit/taos-tools/packaging/deb
           [ -z "$taos_tools_ver" ] && taos_tools_ver="0.1.0"
 
-          taos_tools_ver=$(git describe --tags|sed -e 's/ver-//g')
+          taos_tools_ver=$(git describe --tags|sed -e 's/ver-//g'|awk -F '-' '{print $1}')
           ${csudo} ./make-taos-tools-deb.sh ${top_dir} \
               ${compile_dir} ${output_dir} ${taos_tools_ver} ${cpuType} ${osType} ${verMode} ${verType}
       fi
@@ -541,7 +541,7 @@ if [ "$osType" != "Darwin" ]; then
           cd ${top_dir}/src/kit/taos-tools/packaging/rpm
           [ -z "$taos_tools_ver" ] && taos_tools_ver="0.1.0"
 
-          taos_tools_ver=$(git describe --tags|sed -e 's/ver-//g'|sed -e 's/-/_/g')
+          taos_tools_ver=$(git describe --tags|sed -e 's/ver-//g'|awk -F '-' '{print $1}'|sed -e 's/-/_/g')
           ${csudo} ./make-taos-tools-rpm.sh ${top_dir} \
               ${compile_dir} ${output_dir} ${taos_tools_ver} ${cpuType} ${osType} ${verMode} ${verType}
       fi
diff --git a/packaging/rpm/tdengine.spec b/packaging/rpm/tdengine.spec
index 31e5e49ab4deef817da89afbefa1b6dd18ad07cd..e1a8a9f9f6aee3ebe7fbcdacd579235cde7165e8 100644
--- a/packaging/rpm/tdengine.spec
+++ b/packaging/rpm/tdengine.spec
@@ -71,7 +71,6 @@ cp %{_compiledir}/build/bin/taosd                   %{buildroot}%{homepath}/bin
 if [ -f %{_compiledir}/build/bin/taosadapter ]; then
     cp %{_compiledir}/build/bin/taosadapter                    %{buildroot}%{homepath}/bin ||:
 fi
-cp %{_compiledir}/build/bin/taosdemo                %{buildroot}%{homepath}/bin
 cp %{_compiledir}/build/lib/${libfile}              %{buildroot}%{homepath}/driver
 cp %{_compiledir}/../src/inc/taos.h                 %{buildroot}%{homepath}/include
 cp %{_compiledir}/../src/inc/taosdef.h              %{buildroot}%{homepath}/include
@@ -196,7 +195,6 @@ if [ $1 -eq 0 ];then
     ${csudo} rm -f ${bin_link_dir}/taos       || :
     ${csudo} rm -f ${bin_link_dir}/taosd      || :
     ${csudo} rm -f ${bin_link_dir}/taosadapter       || :
-    ${csudo} rm -f ${bin_link_dir}/taosdemo   || :
     ${csudo} rm -f ${cfg_link_dir}/*          || :
     ${csudo} rm -f ${inc_link_dir}/taos.h     || :
     ${csudo} rm -f ${inc_link_dir}/taosdef.h     || :
diff --git a/packaging/tools/install.sh b/packaging/tools/install.sh
index 95bf3e7b74f6e0f782a8cd5caefd196510358f87..555a476558861132deccbc3673b7d8e96df70804 100755
--- a/packaging/tools/install.sh
+++ b/packaging/tools/install.sh
@@ -887,8 +887,8 @@ function update_TDengine() {
     fi
     tar -zxf taos.tar.gz
     install_jemalloc
-    install_avro lib
-    install_avro lib64
+    #install_avro lib
+    #install_avro lib64
 
     echo -e "${GREEN}Start to update TDengine...${NC}"
     # Stop the service if running
@@ -1001,8 +1001,8 @@ function install_TDengine() {
     install_header
     install_lib
     install_jemalloc
-    install_avro lib
-    install_avro lib64
+    #install_avro lib
+    #install_avro lib64
 
     if [ "$pagMode" != "lite" ]; then
       install_connector
diff --git a/packaging/tools/makeclient.sh b/packaging/tools/makeclient.sh
index 13172c46ee0458272b7ecb83fcde7a762ccdae2a..278388f39f8a93c4e38ec6b344c7e902dfed549e 100755
--- a/packaging/tools/makeclient.sh
+++ b/packaging/tools/makeclient.sh
@@ -45,8 +45,9 @@ if [ "$osType" != "Darwin" ]; then
     strip ${build_dir}/bin/taos
     bin_files="${build_dir}/bin/taos ${script_dir}/remove_client.sh"
   else
-    bin_files="${build_dir}/bin/taos ${build_dir}/bin/taosdemo \
-               ${script_dir}/remove_client.sh ${script_dir}/set_core.sh ${script_dir}/get_client.sh ${script_dir}/taosd-dump-cfg.gdb"
+    bin_files="${script_dir}/remove_client.sh \
+        ${script_dir}/set_core.sh \
+        ${script_dir}/get_client.sh ${script_dir}/taosd-dump-cfg.gdb"
   fi
   lib_files="${build_dir}/lib/libtaos.so.${version}"
 else
diff --git a/packaging/tools/makepkg.sh b/packaging/tools/makepkg.sh
index c9555291bc77828da336c6bfe9c6215f208ff178..fdeff01fd8ae7c5f176cd8efe4c8c42202f0d166 100755
--- a/packaging/tools/makepkg.sh
+++ b/packaging/tools/makepkg.sh
@@ -31,23 +31,37 @@ else
     install_dir="${release_dir}/TDengine-server-${version}"
 fi
 
+if [ -d ${top_dir}/src/kit/taos-tools/packaging/deb ]; then
+    cd ${top_dir}/src/kit/taos-tools/packaging/deb
+    [ -z "$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}"
+
+    cd ${curr_dir}
+else
+    taostools_install_dir="${release_dir}/taos-tools-${version}"
+fi
+
 # Directories and files
 if [ "$pagMode" == "lite" ]; then
   strip ${build_dir}/bin/taosd
   strip ${build_dir}/bin/taos
   # lite version doesn't include taosadapter,  which will lead to no restful interface
   bin_files="${build_dir}/bin/taosd ${build_dir}/bin/taos ${script_dir}/remove.sh ${script_dir}/startPre.sh"
+  taostools_bin_files=""
 else
   bin_files="${build_dir}/bin/taosd \
       ${build_dir}/bin/taos \
       ${build_dir}/bin/taosadapter \
-      ${build_dir}/bin/taosdump \
-      ${build_dir}/bin/taosdemo \
       ${build_dir}/bin/tarbitrator\
       ${script_dir}/remove.sh \
       ${script_dir}/set_core.sh \
       ${script_dir}/startPre.sh \
       ${script_dir}/taosd-dump-cfg.gdb"
+
+  taostools_bin_files=" ${build_dir}/bin/taosdump \
+      ${build_dir}/bin/taosBenchmark"
 fi
 
 lib_files="${build_dir}/lib/libtaos.so.${version}"
@@ -78,6 +92,7 @@ mkdir -p ${install_dir}
 mkdir -p ${install_dir}/inc && cp ${header_files} ${install_dir}/inc
 mkdir -p ${install_dir}/cfg && cp ${cfg_dir}/taos.cfg ${install_dir}/cfg/taos.cfg
 
+
 if [ -f "${compile_dir}/test/cfg/taosadapter.toml" ]; then
     cp ${compile_dir}/test/cfg/taosadapter.toml                 ${install_dir}/cfg || :
 fi
@@ -102,10 +117,29 @@ mkdir -p ${install_dir}/init.d && cp ${init_file_rpm} ${install_dir}/init.d/taos
 mkdir -p ${install_dir}/init.d && cp ${init_file_tarbitrator_deb} ${install_dir}/init.d/tarbitratord.deb || :
 mkdir -p ${install_dir}/init.d && cp ${init_file_tarbitrator_rpm} ${install_dir}/init.d/tarbitratord.rpm || :
 
-if [ -f ${build_dir}/lib/libavro.so.23.0.0 ]; then
-    mkdir -p ${install_dir}/avro/{lib,lib/pkgconfig}
-    cp ${build_dir}/lib/libavro.* ${install_dir}/avro/lib
-    cp ${build_dir}/lib/pkgconfig/avro-c.pc ${install_dir}/avro/lib/pkgconfig
+if [ -n "${taostools_bin_files}" ]; then
+    mkdir -p ${taostools_install_dir} || echo -e "failed to create ${taostools_install_dir}"
+    mkdir -p ${taostools_install_dir}/bin \
+        && cp ${taostools_bin_files} ${taostools_install_dir}/bin \
+        && chmod a+x ${taostools_install_dir}/bin/* || :
+    [ -f ${taostools_install_dir}/bin/taosBenchmark ] && \
+        ln -sf ${taostools_install_dir}/bin/taosBenchmark \
+        ${taostools_install_dir}/bin/taosdemo
+
+    if [ -f ${top_dir}/src/kit/taos-tools/packaging/tools/install-taostools.sh ]; then
+        cp ${top_dir}/src/kit/taos-tools/packaging/tools/install-taostools.sh \
+            ${taostools_install_dir}/ > /dev/null \
+            && chmod a+x {taostools_install_dir}/install-taostools.sh \
+            || echo -e "failed to copy install-taostools.sh"
+    else
+        echo -e "install-taostools.sh not found"
+    fi
+
+    if [ -f ${build_dir}/lib/libavro.so.23.0.0 ]; then
+        mkdir -p ${taostools_install_dir}/avro/{lib,lib/pkgconfig} || echo -e "failed to create ${taostools_install_dir}/avro"
+        cp ${build_dir}/lib/libavro.* ${taostools_install_dir}/avro/lib
+        cp ${build_dir}/lib/pkgconfig/avro-c.pc ${taostools_install_dir}/avro/lib/pkgconfig
+    fi
 fi
 
 if [ -f ${build_dir}/bin/jemalloc-config ]; then
@@ -235,6 +269,8 @@ cd ${release_dir}
 #  install_dir has been distinguishes  cluster from  edege, so comments this code
 pkg_name=${install_dir}-${osType}-${cpuType}
 
+taostools_pkg_name=${taostools_install_dir}-${osType}-${cpuType}
+
 # if [ "$verMode" == "cluster" ]; then
 #   pkg_name=${install_dir}-${osType}-${cpuType}
 # elif [ "$verMode" == "edge" ]; then
@@ -246,8 +282,10 @@ pkg_name=${install_dir}-${osType}-${cpuType}
 
 if [[ "$verType" == "beta" ]] || [[ "$verType" == "preRelease" ]]; then
   pkg_name=${install_dir}-${verType}-${osType}-${cpuType}
+  taostools_pkg_name=${taostools_install_dir}-${verType}-${osType}-${cpuType}
 elif [ "$verType" == "stable" ]; then
   pkg_name=${pkg_name}
+  taostools_pkg_name=${taostools_pkg_name}
 else
   echo "unknow verType, nor stabel or beta"
   exit 1
@@ -264,4 +302,13 @@ if [ "$exitcode" != "0" ]; then
     exit $exitcode
 fi
 
+if [ -n "${taostools_bin_files}" ]; then
+    tar -zcv -f "$(basename ${taostools_pkg_name}).tar.gz" $(basename ${taostools_install_dir}) --remove-files || :
+    exitcode=$?
+    if [ "$exitcode" != "0" ]; then
+        echo "tar ${taostools_pkg_name}.tar.gz error !!!"
+        exit $exitcode
+    fi
+fi
+
 cd ${curr_dir}
diff --git a/packaging/tools/remove.sh b/packaging/tools/remove.sh
index 6241dd9eabdc065425ec6753273c2e269f65a42d..7ace212e6ae93cf1e4b7c0e55962091027e9b15d 100755
--- a/packaging/tools/remove.sh
+++ b/packaging/tools/remove.sh
@@ -27,6 +27,7 @@ install_nginxd_dir="/usr/local/nginxd"
 
 service_config_dir="/etc/systemd/system"
 taos_service_name="taosd"
+taosadapter_service_name="taosadapter"
 tarbitrator_service_name="tarbitratord"
 nginx_service_name="nginxd"
 csudo=""
@@ -112,14 +113,20 @@ function clean_log() {
 
 function clean_service_on_systemd() {
     taosd_service_config="${service_config_dir}/${taos_service_name}.service"
-    taosadapter_service_config="${service_config_dir}/taosadapter.service"
     if systemctl is-active --quiet ${taos_service_name}; then
         echo "TDengine taosd is running, stopping it..."
         ${csudo} systemctl stop ${taos_service_name} &> /dev/null || echo &> /dev/null
     fi
     ${csudo} systemctl disable ${taos_service_name} &> /dev/null || echo &> /dev/null
     ${csudo} rm -f ${taosd_service_config}
-    [ -f ${taosadapter_service_config} ] && ${sudo} rm -f ${taosadapter_service_config}
+
+    taosadapter_service_config="${service_config_dir}/taosadapter.service"
+    if systemctl is-active --quiet ${taosadapter_service_name}; then
+        echo "TDengine taosAdapter is running, stopping it..."
+        ${csudo} systemctl stop ${taosadapter_service_name} &> /dev/null || echo &> /dev/null
+    fi
+    ${csudo} systemctl disable ${taosadapter_service_name} &> /dev/null || echo &> /dev/null
+    [ -f ${taosadapter_service_config} ] && ${csudo} rm -f ${taosadapter_service_config}
 
     tarbitratord_service_config="${service_config_dir}/${tarbitrator_service_name}.service"
     if systemctl is-active --quiet ${tarbitrator_service_name}; then
diff --git a/src/client/src/tscSQLParser.c b/src/client/src/tscSQLParser.c
index 92d3fd1d151f31ba4112e2bd102e2f78c4a5db38..e1be3bf6a95a26d7b96d803b86d8a5a4f14d829e 100644
--- a/src/client/src/tscSQLParser.c
+++ b/src/client/src/tscSQLParser.c
@@ -368,19 +368,28 @@ static int32_t handlePassword(SSqlCmd* pCmd, SStrToken* pPwd) {
 // validate the out put field type for "UNION ALL" subclause
 static int32_t normalizeVarDataTypeLength(SSqlCmd* pCmd) {
   const char* msg1 = "columns in select clause not identical";
+  const char* msg2 = "too many select clause siblings, at most 100 allowed";
 
+  int32_t siblings = 0;
   int32_t diffSize = 0;
 
   // if there is only one element, the limit of clause is the limit of global result.
   SQueryInfo* pQueryInfo1 = pCmd->pQueryInfo;
   SQueryInfo* pSibling = pQueryInfo1->sibling;
 
+  // pQueryInfo1 itself
+  ++siblings;
+
   while(pSibling != NULL) {
     int32_t ret = tscFieldInfoCompare(&pQueryInfo1->fieldsInfo, &pSibling->fieldsInfo, &diffSize);
     if (ret != 0) {
       return invalidOperationMsg(tscGetErrorMsgPayload(pCmd), msg1);
     }
 
+    if (++siblings > 100) {
+      return invalidOperationMsg(tscGetErrorMsgPayload(pCmd), msg2);
+    }
+
     pSibling = pSibling->sibling;
   }
 
@@ -6889,17 +6898,15 @@ int32_t validateLimitNode(SSqlCmd* pCmd, SQueryInfo* pQueryInfo, SSqlNode* pSqlN
 
   // todo refactor
   if (UTIL_TABLE_IS_SUPER_TABLE(pTableMetaInfo)) {
-    if (!tscQueryTags(pQueryInfo)) {  // local handle the super table tag query
-      if (tscIsProjectionQueryOnSTable(pQueryInfo, 0)) {
-        if (pQueryInfo->slimit.limit > 0 || pQueryInfo->slimit.offset > 0) {
-          return invalidOperationMsg(tscGetErrorMsgPayload(pCmd), msg2);
-        }
+    if (tscIsProjectionQueryOnSTable(pQueryInfo, 0)) {
+      if (pQueryInfo->slimit.limit > 0 || pQueryInfo->slimit.offset > 0) {
+        return invalidOperationMsg(tscGetErrorMsgPayload(pCmd), msg2);
+      }
 
-        // for projection query on super table, all queries are subqueries
-        if (tscNonOrderedProjectionQueryOnSTable(pQueryInfo, 0) &&
-            !TSDB_QUERY_HAS_TYPE(pQueryInfo->type, TSDB_QUERY_TYPE_JOIN_QUERY)) {
-          pQueryInfo->type |= TSDB_QUERY_TYPE_SUBQUERY;
-        }
+      // for projection query on super table, all queries are subqueries
+      if (tscNonOrderedProjectionQueryOnSTable(pQueryInfo, 0) &&
+          !TSDB_QUERY_HAS_TYPE(pQueryInfo->type, TSDB_QUERY_TYPE_JOIN_QUERY)) {
+        pQueryInfo->type |= TSDB_QUERY_TYPE_SUBQUERY;
       }
     }
 
@@ -9137,7 +9144,7 @@ int32_t validateSqlNode(SSqlObj* pSql, SSqlNode* pSqlNode, SQueryInfo* pQueryInf
   const char* msg4 = "interval query not supported, since the result of sub query not include valid timestamp column";
   const char* msg5 = "only tag query not compatible with normal column filter";
   const char* msg6 = "not support stddev/percentile/interp in the outer query yet";
-  const char* msg7 = "derivative/twa/irate requires timestamp column exists in subquery";
+  const char* msg7 = "derivative/twa/rate/irate/diff requires timestamp column exists in subquery";
   const char* msg8 = "condition missing for join query";
   const char* msg9 = "not support 3 level select";
 
@@ -9222,7 +9229,8 @@ int32_t validateSqlNode(SSqlObj* pSql, SSqlNode* pSqlNode, SQueryInfo* pQueryInf
         SExprInfo* pExpr = tscExprGet(pQueryInfo, i);
 
         int32_t f = pExpr->base.functionId;
-        if (f == TSDB_FUNC_DERIVATIVE || f == TSDB_FUNC_TWA || f == TSDB_FUNC_IRATE) {
+        if (f == TSDB_FUNC_DERIVATIVE || f == TSDB_FUNC_TWA || f == TSDB_FUNC_IRATE || 
+            f == TSDB_FUNC_RATE       || f == TSDB_FUNC_DIFF) {
           return invalidOperationMsg(tscGetErrorMsgPayload(pCmd), msg7);
         }
       }
diff --git a/src/client/src/tscServer.c b/src/client/src/tscServer.c
index 361f73945533b03017b5e156fff975fa1106925f..9947faf0524c6c3af090f78fb1d3c284cb61e754 100644
--- a/src/client/src/tscServer.c
+++ b/src/client/src/tscServer.c
@@ -837,7 +837,11 @@ static int32_t serializeSqlExpr(SSqlExpr* pExpr, STableMetaInfo* pTableMetaInfo,
     return TSDB_CODE_TSC_INVALID_OPERATION;
   }
 
-  assert(pExpr->resColId < 0);
+  if (pExpr->resColId >= 0) {
+    tscError("result column id underflowed: %d", pExpr->resColId);
+    return TSDB_CODE_TSC_RES_TOO_MANY;
+  }
+
   SSqlExpr* pSqlExpr = (SSqlExpr *)(*pMsg);
 
   SColIndex* pIndex = &pSqlExpr->colInfo;
diff --git a/src/common/inc/tdataformat.h b/src/common/inc/tdataformat.h
index 3a5b49e9eee004f8a93121653781c23b5fd347bf..98134c2433b690239cf33608dce92ad3fbbcee62 100644
--- a/src/common/inc/tdataformat.h
+++ b/src/common/inc/tdataformat.h
@@ -448,13 +448,14 @@ typedef struct {
 #define kvRowSetNCols(r, n) kvRowNCols(r) = (n)
 #define kvRowColIdx(r) (SColIdx *)POINTER_SHIFT(r, TD_KV_ROW_HEAD_SIZE)
 #define kvRowValues(r) POINTER_SHIFT(r, TD_KV_ROW_HEAD_SIZE + sizeof(SColIdx) * kvRowNCols(r))
+#define kvRowKeys(r) POINTER_SHIFT(r, *(uint16_t *)POINTER_SHIFT(r, TD_KV_ROW_HEAD_SIZE + sizeof(int16_t)))
 #define kvRowCpy(dst, r) memcpy((dst), (r), kvRowLen(r))
 #define kvRowColVal(r, colIdx) POINTER_SHIFT(kvRowValues(r), (colIdx)->offset)
 #define kvRowColIdxAt(r, i) (kvRowColIdx(r) + (i))
 #define kvRowFree(r) tfree(r)
 #define kvRowEnd(r) POINTER_SHIFT(r, kvRowLen(r))
 #define kvRowValLen(r) (kvRowLen(r) - TD_KV_ROW_HEAD_SIZE - sizeof(SColIdx) * kvRowNCols(r))
-#define kvRowTKey(r) (*(TKEY *)(kvRowValues(r)))
+#define kvRowTKey(r) (*(TKEY *)(kvRowKeys(r)))
 #define kvRowKey(r) tdGetKey(kvRowTKey(r))
 #define kvRowDeleted(r) TKEY_IS_DELETED(kvRowTKey(r))
 
@@ -652,7 +653,7 @@ static FORCE_INLINE char *memRowEnd(SMemRow row) {
 #define memRowKvVersion(r) (*(int16_t *)POINTER_SHIFT(r, TD_MEM_ROW_TYPE_SIZE))
 #define memRowVersion(r) (isDataRow(r) ? memRowDataVersion(r) : memRowKvVersion(r))  // schema version
 #define memRowSetKvVersion(r, v) (memRowKvVersion(r) = (v))
-#define memRowTuple(r) (isDataRow(r) ? dataRowTuple(memRowDataBody(r)) : kvRowValues(memRowKvBody(r)))
+#define memRowKeys(r) (isDataRow(r) ? dataRowTuple(memRowDataBody(r)) : kvRowKeys(memRowKvBody(r)))
 
 #define memRowTKey(r) (isDataRow(r) ? dataRowTKey(memRowDataBody(r)) : kvRowTKey(memRowKvBody(r)))
 #define memRowKey(r) (isDataRow(r) ? dataRowKey(memRowDataBody(r)) : kvRowKey(memRowKvBody(r)))
diff --git a/src/connector/jdbc/src/main/java/com/taosdata/jdbc/SchemalessStatement.java b/src/connector/jdbc/src/main/java/com/taosdata/jdbc/SchemalessStatement.java
index 748891d943536b3cb6ebd6adffd295573adee4d1..d1184abc2722d81e8688a024d08e26200d104ce8 100644
--- a/src/connector/jdbc/src/main/java/com/taosdata/jdbc/SchemalessStatement.java
+++ b/src/connector/jdbc/src/main/java/com/taosdata/jdbc/SchemalessStatement.java
@@ -9,15 +9,11 @@ import java.sql.SQLException;
 import java.sql.Statement;
 
 /**
- * @author huolibo@qq.com
- * @version v1.0.0
- * @JDK: 1.8
- * @description: this class is an extension of {@link Statement}. use like:
+ * this class is an extension of {@link Statement}. e.g.:
  * Statement statement = conn.createStatement();
  * SchemalessStatement schemalessStatement = new SchemalessStatement(statement);
  * schemalessStatement.execute(sql);
- * schemalessStatement.executeSchemaless(lines, SchemalessProtocolType, SchemalessTimestampType);
- * @since 2021-11-03 17:10
+ * schemalessStatement.insert(lines, SchemalessProtocolType, SchemalessTimestampType);
  */
 public class SchemalessStatement extends AbstractStatementWrapper {
     public SchemalessStatement(Statement statement) {
@@ -27,12 +23,12 @@ public class SchemalessStatement extends AbstractStatementWrapper {
     /**
      * batch insert schemaless lines
      *
-     * @param lines         schemaless data
+     * @param lines         schemaless lines
      * @param protocolType  schemaless type {@link SchemalessProtocolType}
      * @param timestampType Time precision {@link SchemalessTimestampType}
      * @throws SQLException execute insert exception
      */
-    public void executeSchemaless(String[] lines, SchemalessProtocolType protocolType, SchemalessTimestampType timestampType) throws SQLException {
+    public void insert(String[] lines, SchemalessProtocolType protocolType, SchemalessTimestampType timestampType) throws SQLException {
         Connection connection = this.getConnection();
         if (connection instanceof TSDBConnection) {
             TSDBConnection tsdbConnection = (TSDBConnection) connection;
@@ -52,7 +48,7 @@ public class SchemalessStatement extends AbstractStatementWrapper {
      * @param timestampType Time precision {@link SchemalessTimestampType}
      * @throws SQLException execute insert exception
      */
-    public void executeSchemaless(String line, SchemalessProtocolType protocolType, SchemalessTimestampType timestampType) throws SQLException {
-        executeSchemaless(new String[]{line}, protocolType, timestampType);
+    public void insert(String line, SchemalessProtocolType protocolType, SchemalessTimestampType timestampType) throws SQLException {
+        insert(new String[]{line}, protocolType, timestampType);
     }
 }
diff --git a/src/connector/jdbc/src/test/java/com/taosdata/jdbc/SchemalessInsertTest.java b/src/connector/jdbc/src/test/java/com/taosdata/jdbc/SchemalessInsertTest.java
index fd4ac12ce40dc02f2b6ffbf91e33b0e0bd2398a9..b24271615ccf50d459e41687a51ba37394cbce4d 100644
--- a/src/connector/jdbc/src/test/java/com/taosdata/jdbc/SchemalessInsertTest.java
+++ b/src/connector/jdbc/src/test/java/com/taosdata/jdbc/SchemalessInsertTest.java
@@ -29,7 +29,7 @@ public class SchemalessInsertTest {
         // when
         try (Statement statement = conn.createStatement();
              SchemalessStatement schemalessStatement = new SchemalessStatement(statement)) {
-            schemalessStatement.executeSchemaless(lines, SchemalessProtocolType.LINE, SchemalessTimestampType.NANO_SECONDS);
+            schemalessStatement.insert(lines, SchemalessProtocolType.LINE, SchemalessTimestampType.NANO_SECONDS);
         }
 
         // then
@@ -64,7 +64,7 @@ public class SchemalessInsertTest {
         // when
         try (Statement statement = conn.createStatement();
              SchemalessStatement schemalessStatement = new SchemalessStatement(statement)) {
-            schemalessStatement.executeSchemaless(lines, SchemalessProtocolType.TELNET, SchemalessTimestampType.NOT_CONFIGURED);
+            schemalessStatement.insert(lines, SchemalessProtocolType.TELNET, SchemalessTimestampType.NOT_CONFIGURED);
         }
 
         // then
@@ -116,7 +116,7 @@ public class SchemalessInsertTest {
         // when
         try (Statement statement = conn.createStatement();
              SchemalessStatement schemalessStatement = new SchemalessStatement(statement)) {
-            schemalessStatement.executeSchemaless(json, SchemalessProtocolType.JSON, SchemalessTimestampType.NOT_CONFIGURED);
+            schemalessStatement.insert(json, SchemalessProtocolType.JSON, SchemalessTimestampType.NOT_CONFIGURED);
         }
 
         // then
diff --git a/src/inc/taoserror.h b/src/inc/taoserror.h
index 72c725ed198538f34f6b317cffadd5a3682a3d5d..39498ab3aa71b2a23acb979aae72f5950ae11690 100644
--- a/src/inc/taoserror.h
+++ b/src/inc/taoserror.h
@@ -75,45 +75,46 @@ int32_t* taosGetErrno();
 #define TSDB_CODE_REF_NOT_EXIST                 TAOS_DEF_ERROR_CODE(0, 0x010A)  //"Ref is not there"
 
 //client
-#define TSDB_CODE_TSC_INVALID_OPERATION         TAOS_DEF_ERROR_CODE(0, 0x0200)  //"Invalid Operation"
-#define TSDB_CODE_TSC_INVALID_QHANDLE           TAOS_DEF_ERROR_CODE(0, 0x0201)  //"Invalid qhandle"
-#define TSDB_CODE_TSC_INVALID_TIME_STAMP        TAOS_DEF_ERROR_CODE(0, 0x0202)  //"Invalid combination of client/service time"
-#define TSDB_CODE_TSC_INVALID_VALUE             TAOS_DEF_ERROR_CODE(0, 0x0203)  //"Invalid value in client"
-#define TSDB_CODE_TSC_INVALID_VERSION           TAOS_DEF_ERROR_CODE(0, 0x0204)  //"Invalid client version"
-#define TSDB_CODE_TSC_INVALID_IE                TAOS_DEF_ERROR_CODE(0, 0x0205)  //"Invalid client ie"
-#define TSDB_CODE_TSC_INVALID_FQDN              TAOS_DEF_ERROR_CODE(0, 0x0206)  //"Invalid host name"
-#define TSDB_CODE_TSC_INVALID_USER_LENGTH       TAOS_DEF_ERROR_CODE(0, 0x0207)  //"Invalid user name"
-#define TSDB_CODE_TSC_INVALID_PASS_LENGTH       TAOS_DEF_ERROR_CODE(0, 0x0208)  //"Invalid password"
-#define TSDB_CODE_TSC_INVALID_DB_LENGTH         TAOS_DEF_ERROR_CODE(0, 0x0209)  //"Database name too long"
-#define TSDB_CODE_TSC_INVALID_TABLE_ID_LENGTH   TAOS_DEF_ERROR_CODE(0, 0x020A)  //"Table name too long"
-#define TSDB_CODE_TSC_INVALID_CONNECTION        TAOS_DEF_ERROR_CODE(0, 0x020B)  //"Invalid connection"
-#define TSDB_CODE_TSC_OUT_OF_MEMORY             TAOS_DEF_ERROR_CODE(0, 0x020C)  //"System out of memory"
-#define TSDB_CODE_TSC_NO_DISKSPACE              TAOS_DEF_ERROR_CODE(0, 0x020D)  //"System out of disk space"
-#define TSDB_CODE_TSC_QUERY_CACHE_ERASED        TAOS_DEF_ERROR_CODE(0, 0x020E)  //"Query cache erased"
-#define TSDB_CODE_TSC_QUERY_CANCELLED           TAOS_DEF_ERROR_CODE(0, 0x020F)  //"Query terminated"
-#define TSDB_CODE_TSC_SORTED_RES_TOO_MANY       TAOS_DEF_ERROR_CODE(0, 0x0210)  //"Result set too large to be sorted"      // too many result for ordered super table projection query
-#define TSDB_CODE_TSC_APP_ERROR                 TAOS_DEF_ERROR_CODE(0, 0x0211)  //"Application error"
-#define TSDB_CODE_TSC_ACTION_IN_PROGRESS        TAOS_DEF_ERROR_CODE(0, 0x0212)  //"Action in progress"
-#define TSDB_CODE_TSC_DISCONNECTED              TAOS_DEF_ERROR_CODE(0, 0x0213)  //"Disconnected from service"
-#define TSDB_CODE_TSC_NO_WRITE_AUTH             TAOS_DEF_ERROR_CODE(0, 0x0214)  //"No write permission"
-#define TSDB_CODE_TSC_CONN_KILLED               TAOS_DEF_ERROR_CODE(0, 0x0215)  //"Connection killed"
-#define TSDB_CODE_TSC_SQL_SYNTAX_ERROR          TAOS_DEF_ERROR_CODE(0, 0x0216)  //"Syntax error in SQL"
-#define TSDB_CODE_TSC_DB_NOT_SELECTED           TAOS_DEF_ERROR_CODE(0, 0x0217)  //"Database not specified or available"
-#define TSDB_CODE_TSC_INVALID_TABLE_NAME        TAOS_DEF_ERROR_CODE(0, 0x0218)  //"Table does not exist"
-#define TSDB_CODE_TSC_EXCEED_SQL_LIMIT          TAOS_DEF_ERROR_CODE(0, 0x0219)  //"SQL statement too long check maxSQLLength config"
-#define TSDB_CODE_TSC_FILE_EMPTY                TAOS_DEF_ERROR_CODE(0, 0x021A)  //"File is empty"
-#define TSDB_CODE_TSC_LINE_SYNTAX_ERROR         TAOS_DEF_ERROR_CODE(0, 0x021B)  //"Syntax error in Line"
-#define TSDB_CODE_TSC_NO_META_CACHED            TAOS_DEF_ERROR_CODE(0, 0x021C)  //"No table meta cached"
-#define TSDB_CODE_TSC_DUP_COL_NAMES             TAOS_DEF_ERROR_CODE(0, 0x021D)  //"duplicated column names"
-#define TSDB_CODE_TSC_INVALID_TAG_LENGTH        TAOS_DEF_ERROR_CODE(0, 0x021E)  //"Invalid tag length"
-#define TSDB_CODE_TSC_INVALID_COLUMN_LENGTH     TAOS_DEF_ERROR_CODE(0, 0x021F)  //"Invalid column length"
-#define TSDB_CODE_TSC_DUP_TAG_NAMES             TAOS_DEF_ERROR_CODE(0, 0x0220)  //"duplicated tag names"
-#define TSDB_CODE_TSC_INVALID_JSON              TAOS_DEF_ERROR_CODE(0, 0x0221)  //"Invalid JSON format"
-#define TSDB_CODE_TSC_INVALID_JSON_TYPE         TAOS_DEF_ERROR_CODE(0, 0x0222)  //"Invalid JSON data type"
-#define TSDB_CODE_TSC_INVALID_JSON_CONFIG       TAOS_DEF_ERROR_CODE(0, 0x0223)  //"Invalid JSON configuration"
-#define TSDB_CODE_TSC_VALUE_OUT_OF_RANGE        TAOS_DEF_ERROR_CODE(0, 0x0224)  //"Value out of range"
-#define TSDB_CODE_TSC_INVALID_PROTOCOL_TYPE     TAOS_DEF_ERROR_CODE(0, 0x0225)  //"Invalid line protocol type"
-#define TSDB_CODE_TSC_INVALID_PRECISION_TYPE    TAOS_DEF_ERROR_CODE(0, 0x0226)  //"Invalid timestamp precision type"
+#define TSDB_CODE_TSC_INVALID_OPERATION         TAOS_DEF_ERROR_CODE(0, 0x0200)  //"Invalid Operation")
+#define TSDB_CODE_TSC_INVALID_QHANDLE           TAOS_DEF_ERROR_CODE(0, 0x0201)  //"Invalid qhandle")
+#define TSDB_CODE_TSC_INVALID_TIME_STAMP        TAOS_DEF_ERROR_CODE(0, 0x0202)  //"Invalid combination of client/service time")
+#define TSDB_CODE_TSC_INVALID_VALUE             TAOS_DEF_ERROR_CODE(0, 0x0203)  //"Invalid value in client")
+#define TSDB_CODE_TSC_INVALID_VERSION           TAOS_DEF_ERROR_CODE(0, 0x0204)  //"Invalid client version")
+#define TSDB_CODE_TSC_INVALID_IE                TAOS_DEF_ERROR_CODE(0, 0x0205)  //"Invalid client ie")
+#define TSDB_CODE_TSC_INVALID_FQDN              TAOS_DEF_ERROR_CODE(0, 0x0206)  //"Invalid host name")
+#define TSDB_CODE_TSC_INVALID_USER_LENGTH       TAOS_DEF_ERROR_CODE(0, 0x0207)  //"Invalid user name")
+#define TSDB_CODE_TSC_INVALID_PASS_LENGTH       TAOS_DEF_ERROR_CODE(0, 0x0208)  //"Invalid password")
+#define TSDB_CODE_TSC_INVALID_DB_LENGTH         TAOS_DEF_ERROR_CODE(0, 0x0209)  //"Database name too long")
+#define TSDB_CODE_TSC_INVALID_TABLE_ID_LENGTH   TAOS_DEF_ERROR_CODE(0, 0x020A)  //"Table name too long")
+#define TSDB_CODE_TSC_INVALID_CONNECTION        TAOS_DEF_ERROR_CODE(0, 0x020B)  //"Invalid connection")
+#define TSDB_CODE_TSC_OUT_OF_MEMORY             TAOS_DEF_ERROR_CODE(0, 0x020C)  //"System out of memory")
+#define TSDB_CODE_TSC_NO_DISKSPACE              TAOS_DEF_ERROR_CODE(0, 0x020D)  //"System out of disk space")
+#define TSDB_CODE_TSC_QUERY_CACHE_ERASED        TAOS_DEF_ERROR_CODE(0, 0x020E)  //"Query cache erased")
+#define TSDB_CODE_TSC_QUERY_CANCELLED           TAOS_DEF_ERROR_CODE(0, 0x020F)  //"Query terminated")
+#define TSDB_CODE_TSC_SORTED_RES_TOO_MANY       TAOS_DEF_ERROR_CODE(0, 0x0210)  //"Result set too large to be sorted")      // too many result for ordered super table projection query
+#define TSDB_CODE_TSC_APP_ERROR                 TAOS_DEF_ERROR_CODE(0, 0x0211)  //"Application error")
+#define TSDB_CODE_TSC_ACTION_IN_PROGRESS        TAOS_DEF_ERROR_CODE(0, 0x0212)  //"Action in progress")
+#define TSDB_CODE_TSC_DISCONNECTED              TAOS_DEF_ERROR_CODE(0, 0x0213)  //"Disconnected from service")
+#define TSDB_CODE_TSC_NO_WRITE_AUTH             TAOS_DEF_ERROR_CODE(0, 0x0214)  //"No write permission")
+#define TSDB_CODE_TSC_CONN_KILLED               TAOS_DEF_ERROR_CODE(0, 0x0215)  //"Connection killed")
+#define TSDB_CODE_TSC_SQL_SYNTAX_ERROR          TAOS_DEF_ERROR_CODE(0, 0x0216)  //"Syntax error in SQL")
+#define TSDB_CODE_TSC_DB_NOT_SELECTED           TAOS_DEF_ERROR_CODE(0, 0x0217)  //"Database not specified or available")
+#define TSDB_CODE_TSC_INVALID_TABLE_NAME        TAOS_DEF_ERROR_CODE(0, 0x0218)  //"Table does not exist")
+#define TSDB_CODE_TSC_EXCEED_SQL_LIMIT          TAOS_DEF_ERROR_CODE(0, 0x0219)  //"SQL statement too long check maxSQLLength config")
+#define TSDB_CODE_TSC_FILE_EMPTY                TAOS_DEF_ERROR_CODE(0, 0x021A)  //"File is empty")
+#define TSDB_CODE_TSC_LINE_SYNTAX_ERROR         TAOS_DEF_ERROR_CODE(0, 0x021B)  //"Syntax error in Line")
+#define TSDB_CODE_TSC_NO_META_CACHED            TAOS_DEF_ERROR_CODE(0, 0x021C)  //"No table meta cached")
+#define TSDB_CODE_TSC_DUP_COL_NAMES             TAOS_DEF_ERROR_CODE(0, 0x021D)  //"duplicated column names")
+#define TSDB_CODE_TSC_INVALID_TAG_LENGTH        TAOS_DEF_ERROR_CODE(0, 0x021E)  //"Invalid tag length")
+#define TSDB_CODE_TSC_INVALID_COLUMN_LENGTH     TAOS_DEF_ERROR_CODE(0, 0x021F)  //"Invalid column length")
+#define TSDB_CODE_TSC_DUP_TAG_NAMES             TAOS_DEF_ERROR_CODE(0, 0x0220)  //"duplicated tag names")
+#define TSDB_CODE_TSC_INVALID_JSON              TAOS_DEF_ERROR_CODE(0, 0x0221)  //"Invalid JSON format")
+#define TSDB_CODE_TSC_INVALID_JSON_TYPE         TAOS_DEF_ERROR_CODE(0, 0x0222)  //"Invalid JSON data type")
+#define TSDB_CODE_TSC_INVALID_JSON_CONFIG       TAOS_DEF_ERROR_CODE(0, 0x0223)  //"Invalid JSON configuration")
+#define TSDB_CODE_TSC_VALUE_OUT_OF_RANGE        TAOS_DEF_ERROR_CODE(0, 0x0224)  //"Value out of range")
+#define TSDB_CODE_TSC_INVALID_PROTOCOL_TYPE     TAOS_DEF_ERROR_CODE(0, 0x0225)  //"Invalid line protocol type")
+#define TSDB_CODE_TSC_INVALID_PRECISION_TYPE    TAOS_DEF_ERROR_CODE(0, 0x0226)  //"Invalid timestamp precision type")
+#define TSDB_CODE_TSC_RES_TOO_MANY              TAOS_DEF_ERROR_CODE(0, 0x0227)  //"Result set too large to be output")
 
 // mnode
 #define TSDB_CODE_MND_MSG_NOT_PROCESSED         TAOS_DEF_ERROR_CODE(0, 0x0300)  //"Message not processed"
diff --git a/src/kit/taos-tools b/src/kit/taos-tools
index b76b5a76756a5c6530ba1d418de51fd336ae23b1..26f90b549f6e113ef3d275775062e674b0119645 160000
--- a/src/kit/taos-tools
+++ b/src/kit/taos-tools
@@ -1 +1 @@
-Subproject commit b76b5a76756a5c6530ba1d418de51fd336ae23b1
+Subproject commit 26f90b549f6e113ef3d275775062e674b0119645
diff --git a/src/query/src/qAggMain.c b/src/query/src/qAggMain.c
index 62f0edc8b13c97955fb35c6ae74a9c9abb3b59ea..5e7a748095008d074b2a5045dc9afc443630007a 100644
--- a/src/query/src/qAggMain.c
+++ b/src/query/src/qAggMain.c
@@ -1095,11 +1095,11 @@ static void minMax_function(SQLFunctionCtx *pCtx, char *pOutput, int32_t isMin,
         
         if ((*retVal < pData[i]) ^ isMin) {
           *retVal = pData[i];
-          TSKEY k = tsList[i];
-          
-          DO_UPDATE_TAG_COLUMNS(pCtx, k);
+          if(tsList) {
+            TSKEY k = tsList[i];
+            DO_UPDATE_TAG_COLUMNS(pCtx, k);
+          }
         }
-        
         *notNullElems += 1;
       }
 #if defined(_DEBUG_VIEW)
diff --git a/src/tsdb/src/tsdbMemTable.c b/src/tsdb/src/tsdbMemTable.c
index 7cf6f7150dea442e024e0fab663c9ea38dce728b..8958df3ced9a1577735660293eda0717b46db49a 100644
--- a/src/tsdb/src/tsdbMemTable.c
+++ b/src/tsdb/src/tsdbMemTable.c
@@ -564,7 +564,7 @@ static void tsdbFreeTableData(STableData *pTableData) {
   }
 }
 
-static char *tsdbGetTsTupleKey(const void *data) { return memRowTuple((SMemRow)data); }
+static char *tsdbGetTsTupleKey(const void *data) { return memRowKeys((SMemRow)data); }
 
 static int tsdbAdjustMemMaxTables(SMemTable *pMemTable, int maxTables) {
   ASSERT(pMemTable->maxTables < maxTables);
diff --git a/src/util/src/terror.c b/src/util/src/terror.c
index 3ab8ad9e7c9e737bb0f94dddbdcf19b198566c7e..2001cb29a043774e8514220d08893750ab7b285c 100644
--- a/src/util/src/terror.c
+++ b/src/util/src/terror.c
@@ -122,6 +122,7 @@ TAOS_DEFINE_ERROR(TSDB_CODE_TSC_INVALID_JSON_CONFIG,      "Invalid JSON configur
 TAOS_DEFINE_ERROR(TSDB_CODE_TSC_VALUE_OUT_OF_RANGE,       "Value out of range")
 TAOS_DEFINE_ERROR(TSDB_CODE_TSC_INVALID_PROTOCOL_TYPE,    "Invalid line protocol type")
 TAOS_DEFINE_ERROR(TSDB_CODE_TSC_INVALID_PRECISION_TYPE,   "Invalid timestamp precision type")
+TAOS_DEFINE_ERROR(TSDB_CODE_TSC_RES_TOO_MANY,             "Result set too large to be output")
 
 // mnode
 TAOS_DEFINE_ERROR(TSDB_CODE_MND_MSG_NOT_PROCESSED,        "Message not processed")
diff --git a/tests/develop-test/0-management/0-database/.gitkeep b/tests/develop-test/0-management/0-database/.gitkeep
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/tests/develop-test/0-management/1-stable/.gitkeep b/tests/develop-test/0-management/1-stable/.gitkeep
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/tests/develop-test/0-management/2-table/.gitkeep b/tests/develop-test/0-management/2-table/.gitkeep
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/tests/develop-test/0-management/3-tag/.gitkeep b/tests/develop-test/0-management/3-tag/.gitkeep
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/tests/develop-test/0-management/4-others/.gitkeep b/tests/develop-test/0-management/4-others/.gitkeep
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/tests/develop-test/1-insert/0-sql/.gitkeep b/tests/develop-test/1-insert/0-sql/.gitkeep
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/tests/develop-test/1-insert/1-stmt/.gitkeep b/tests/develop-test/1-insert/1-stmt/.gitkeep
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/tests/develop-test/1-insert/2-schemaless/json/.gitkeep b/tests/develop-test/1-insert/2-schemaless/json/.gitkeep
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/tests/develop-test/1-insert/2-schemaless/line/.gitkeep b/tests/develop-test/1-insert/2-schemaless/line/.gitkeep
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/tests/develop-test/1-insert/2-schemaless/telnet/.gitkeep b/tests/develop-test/1-insert/2-schemaless/telnet/.gitkeep
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/tests/develop-test/2-query/0-aggregate/.gitkeep b/tests/develop-test/2-query/0-aggregate/.gitkeep
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/tests/develop-test/2-query/1-select/.gitkeep b/tests/develop-test/2-query/1-select/.gitkeep
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/tests/develop-test/2-query/2-compute/.gitkeep b/tests/develop-test/2-query/2-compute/.gitkeep
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/tests/develop-test/2-query/3-join/.gitkeep b/tests/develop-test/2-query/3-join/.gitkeep
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/tests/develop-test/2-query/4-union/.gitkeep b/tests/develop-test/2-query/4-union/.gitkeep
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/tests/develop-test/2-query/5-session/.gitkeep b/tests/develop-test/2-query/5-session/.gitkeep
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/tests/develop-test/2-query/6-state_window/.gitkeep b/tests/develop-test/2-query/6-state_window/.gitkeep
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/tests/develop-test/2-query/7-nest/.gitkeep b/tests/develop-test/2-query/7-nest/.gitkeep
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/tests/develop-test/2-query/8-udf/.gitkeep b/tests/develop-test/2-query/8-udf/.gitkeep
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/tests/develop-test/2-query/9-others/.gitkeep b/tests/develop-test/2-query/9-others/.gitkeep
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/tests/develop-test/3-connectors/c#/.gitkeep b/tests/develop-test/3-connectors/c#/.gitkeep
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/tests/develop-test/3-connectors/go/.gitkeep b/tests/develop-test/3-connectors/go/.gitkeep
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/tests/develop-test/3-connectors/java/.gitkeep b/tests/develop-test/3-connectors/java/.gitkeep
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/tests/develop-test/3-connectors/nodejs/.gitkeep b/tests/develop-test/3-connectors/nodejs/.gitkeep
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/tests/develop-test/3-connectors/restful/.gitkeep b/tests/develop-test/3-connectors/restful/.gitkeep
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/tests/develop-test/3-connectors/rust/.gitkeep b/tests/develop-test/3-connectors/rust/.gitkeep
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/tests/develop-test/4-taosAdapter/.gitkeep b/tests/develop-test/4-taosAdapter/.gitkeep
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/tests/develop-test/5-taos-tools/taosbenchmark/.gitkeep b/tests/develop-test/5-taos-tools/taosbenchmark/.gitkeep
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/tests/develop-test/5-taos-tools/taosdump/.gitkeep b/tests/develop-test/5-taos-tools/taosdump/.gitkeep
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/tests/develop-test/6-feature/.gitkeep b/tests/develop-test/6-feature/.gitkeep
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/tests/develop-test/7-cluster/.gitkeep b/tests/develop-test/7-cluster/.gitkeep
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/tests/pytest/query/unionAllTest.py b/tests/pytest/query/unionAllTest.py
index d1e1bf4d3e11191be2875c464150793936acd065..9a7aedc763db05ebb11da33dc65fa74b2ba8daa3 100644
--- a/tests/pytest/query/unionAllTest.py
+++ b/tests/pytest/query/unionAllTest.py
@@ -103,10 +103,27 @@ class TDTestCase:
                     select count(*) as count, loc from st where ts between 1600000000000 and 1600000000010 group by loc''')
         tdSql.checkRows(6)
 
+        # https://jira.taosdata.com:18080/browse/TS-715
+        tdLog.info("test case for TS-715")
+        sql = ""
+
+        tdSql.execute("create table st2(ts timestamp, c1 int, c2 int, c3 int) tags(loc nchar(20))")
+
+        for i in range(101):
+            if i == 0:
+                sql = "select last(*) from sub0 "
+            else:
+                sql += f"union all select last(*) from sub{i} "
+
+            tdSql.execute("create table sub%d using st2 tags('nchar%d')" % (i, i))
+            tdSql.execute("insert into sub%d values(%d, %d, %d, %d)" % (i, self.ts + i, i, i, i))
+
+        tdSql.error(sql)
+
     def stop(self):
         tdSql.close()
         tdLog.success("%s successfully executed" % __file__)
 
 
 tdCases.addWindows(__file__, TDTestCase())
-tdCases.addLinux(__file__, TDTestCase())
\ No newline at end of file
+tdCases.addLinux(__file__, TDTestCase())
diff --git a/tests/script/general/parser/nestquery.sim b/tests/script/general/parser/nestquery.sim
index 25cc8a4ee8774fc7b43234d54d06abdc56af61f8..16803ea0965a66107a90aaf7ad37d715314a8258 100644
--- a/tests/script/general/parser/nestquery.sim
+++ b/tests/script/general/parser/nestquery.sim
@@ -419,12 +419,14 @@ if $data03 != @20-09-15 00:00:00.000@ then
   return -1
 endi
 
-sql select diff(val) from (select c1 val from nest_tb0);
+sql_error select diff(val) from (select c1 val from nest_tb0);
+
+sql select diff(val) from (select ts,c1 val from nest_tb0);
 if $rows != 9999 then
   return -1
 endi
 
-if $data00 != @70-01-01 08:00:00.000@ then
+if $data00 != @20-09-15 00:01:00.000@ then
   return -1
 endi
 
diff --git a/tests/script/general/parser/slimit_query.sim b/tests/script/general/parser/slimit_query.sim
index 0a793f0611a5875f53ac75644f3156ad9aa6cc65..0dbcffa0a43b596d542c8799a9a94170e6f71f5a 100644
--- a/tests/script/general/parser/slimit_query.sim
+++ b/tests/script/general/parser/slimit_query.sim
@@ -31,6 +31,8 @@ $tsu = $tsu + $ts0
 #sql_error select top(c1, 1) from $stb where ts >= $ts0 and ts <= $tsu slimit 5 offset 1
 #sql_error select bottom(c1, 1) from $stb where ts >= $ts0 and ts <= $tsu slimit 5 offset 1
 
+sql_error select t1 from $stb slimit 5 offset 1;
+
 ### select from stb + group by + slimit offset
 sql select max(c1), min(c2), avg(c3), sum(c4), spread(c5), sum(c6), count(c7), first(c8), last(c9) from $stb group by t1 slimit 5 soffset 0
 if $rows != 5 then
diff --git a/tests/system-test/0-management/0-database/.gitkeep b/tests/system-test/0-management/0-database/.gitkeep
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/tests/system-test/0-management/1-stable/.gitkeep b/tests/system-test/0-management/1-stable/.gitkeep
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/tests/system-test/0-management/2-table/.gitkeep b/tests/system-test/0-management/2-table/.gitkeep
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/tests/system-test/0-management/3-tag/.gitkeep b/tests/system-test/0-management/3-tag/.gitkeep
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/tests/system-test/0-management/4-others/.gitkeep b/tests/system-test/0-management/4-others/.gitkeep
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/tests/system-test/1-insert/0-sql/.gitkeep b/tests/system-test/1-insert/0-sql/.gitkeep
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/tests/system-test/1-insert/1-stmt/.gitkeep b/tests/system-test/1-insert/1-stmt/.gitkeep
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/tests/system-test/1-insert/2-schemaless/json/.gitkeep b/tests/system-test/1-insert/2-schemaless/json/.gitkeep
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/tests/system-test/1-insert/2-schemaless/line/.gitkeep b/tests/system-test/1-insert/2-schemaless/line/.gitkeep
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/tests/system-test/1-insert/2-schemaless/telnet/.gitkeep b/tests/system-test/1-insert/2-schemaless/telnet/.gitkeep
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/tests/system-test/2-query/0-aggregate/.gitkeep b/tests/system-test/2-query/0-aggregate/.gitkeep
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/tests/system-test/2-query/1-select/.gitkeep b/tests/system-test/2-query/1-select/.gitkeep
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/tests/system-test/2-query/2-compute/.gitkeep b/tests/system-test/2-query/2-compute/.gitkeep
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/tests/system-test/2-query/3-join/.gitkeep b/tests/system-test/2-query/3-join/.gitkeep
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/tests/system-test/2-query/4-union/.gitkeep b/tests/system-test/2-query/4-union/.gitkeep
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/tests/system-test/2-query/5-session/.gitkeep b/tests/system-test/2-query/5-session/.gitkeep
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/tests/system-test/2-query/6-state_window/.gitkeep b/tests/system-test/2-query/6-state_window/.gitkeep
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/tests/system-test/2-query/7-nest/.gitkeep b/tests/system-test/2-query/7-nest/.gitkeep
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/tests/system-test/2-query/8-udf/.gitkeep b/tests/system-test/2-query/8-udf/.gitkeep
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/tests/system-test/2-query/9-others/.gitkeep b/tests/system-test/2-query/9-others/.gitkeep
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/tests/system-test/3-connectors/c#/.gitkeep b/tests/system-test/3-connectors/c#/.gitkeep
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/tests/system-test/3-connectors/go/.gitkeep b/tests/system-test/3-connectors/go/.gitkeep
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/tests/system-test/3-connectors/java/.gitkeep b/tests/system-test/3-connectors/java/.gitkeep
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/tests/system-test/3-connectors/nodejs/.gitkeep b/tests/system-test/3-connectors/nodejs/.gitkeep
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/tests/system-test/3-connectors/restful/.gitkeep b/tests/system-test/3-connectors/restful/.gitkeep
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/tests/system-test/3-connectors/rust/.gitkeep b/tests/system-test/3-connectors/rust/.gitkeep
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/tests/system-test/4-taosAdapter/.gitkeep b/tests/system-test/4-taosAdapter/.gitkeep
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index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/tests/system-test/5-taos-tools/taosbenchmark/.gitkeep b/tests/system-test/5-taos-tools/taosbenchmark/.gitkeep
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index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/tests/system-test/5-taos-tools/taosdump/.gitkeep b/tests/system-test/5-taos-tools/taosdump/.gitkeep
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/tests/system-test/6-feature/.gitkeep b/tests/system-test/6-feature/.gitkeep
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/tests/system-test/7-cluster/.gitkeep b/tests/system-test/7-cluster/.gitkeep
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391