merge with develop branch.

cmake/install.inc

@@ -32,7 +32,7 @@ ELSEIF (TD_WINDOWS)
   #INSTALL(TARGETS taos RUNTIME DESTINATION driver)
   #INSTALL(TARGETS shell RUNTIME DESTINATION .)
   IF (TD_MVN_INSTALLED)
-    INSTALL(FILES ${LIBRARY_OUTPUT_PATH}/taos-jdbcdriver-2.0.32-dist.jar DESTINATION connector/jdbc)
+    INSTALL(FILES ${LIBRARY_OUTPUT_PATH}/taos-jdbcdriver-*-dist.jar DESTINATION connector/jdbc)
   ENDIF ()
 ELSEIF (TD_DARWIN)
   SET(TD_MAKE_INSTALL_SH "${TD_COMMUNITY_DIR}/packaging/tools/make_install.sh")

documentation20/cn/02.getting-started/docs.md

@@ -2,25 +2,25 @@
 
 ## <a class="anchor" id="install"></a>快捷安装
 
-TDengine软件分为服务器、客户端和报警模块三部分，目前2.0版服务器仅能在Linux系统上安装和运行，后续会支持Windows、mac OS等系统。客户端可以在Windows或Linux上安装和运行。任何OS的应用也可以选择RESTful接口连接服务器taosd。CPU支持X64/ARM64/MIPS64/Alpha64，后续会支持ARM32、RISC-V等CPU架构。用户可根据需求选择通过[源码](https://www.taosdata.com/cn/getting-started/#通过源码安装)或者[安装包](https://www.taosdata.com/cn/getting-started/#通过安装包安装)来安装。
+TDengine 软件分为服务器、客户端和报警模块三部分，目前 2.0 版服务器仅能在 Linux 系统上安装和运行，后续会支持 Windows、Mac OS 等系统。客户端可以在 Windows 或 Linux 上安装和运行。任何 OS 的应用也可以选择 RESTful 接口连接服务器 taosd。CPU 支持 X64/ARM64/MIPS64/Alpha64，后续会支持 ARM32、RISC-V 等 CPU 架构。用户可根据需求选择通过 [源码](https://www.taosdata.com/cn/getting-started/#通过源码安装) 或者 [安装包](https://www.taosdata.com/cn/getting-started/#通过安装包安装) 来安装。
 
 ### <a class="anchor" id="source-install"></a>通过源码安装
 
-请参考我们的[TDengine github主页](https://github.com/taosdata/TDengine)下载源码并安装.
+请参考我们的 [TDengine github 主页](https://github.com/taosdata/TDengine) 下载源码并安装.
 
-### 通过Docker容器运行
+### 通过 Docker 容器运行
 
-暂时不建议生产环境采用 Docker 来部署 TDengine 的客户端或服务端，但在开发环境下或初次尝试时，使用 Docker 方式部署是十分方便的。特别是，利用 Docker，可以方便地在 Mac OSX 和 Windows 环境下尝试 TDengine。
+暂时不建议生产环境采用 Docker 来部署 TDengine 的客户端或服务端，但在开发环境下或初次尝试时，使用 Docker 方式部署是十分方便的。特别是，利用 Docker，可以方便地在 Mac OS X 和 Windows 环境下尝试 TDengine。
 
-详细操作方法请参照 [通过Docker快速体验TDengine](https://www.taosdata.com/cn/documentation/getting-started/docker)。
+详细操作方法请参照 [通过 Docker 快速体验 TDengine](https://www.taosdata.com/cn/documentation/getting-started/docker)。
 
 ### <a class="anchor" id="package-install"></a>通过安装包安装
 
-TDengine的安装非常简单，从下载到安装成功仅仅只要几秒钟。服务端安装包包含客户端和连接器，我们提供三种安装包，您可以根据需要选择：
+TDengine 的安装非常简单，从下载到安装成功仅仅只要几秒钟。服务端安装包包含客户端和连接器，我们提供三种安装包，您可以根据需要选择：
 
-安装包下载在[这里](https://www.taosdata.com/cn/getting-started/#通过安装包安装)。
+安装包下载在 [这里](https://www.taosdata.com/cn/getting-started/#通过安装包安装)。
 
-具体的安装过程，请参见[TDengine多种安装包的安装和卸载](https://www.taosdata.com/blog/2019/08/09/566.html)以及[视频教程](https://www.taosdata.com/blog/2020/11/11/1941.html)。
+具体的安装过程，请参见 [TDengine 多种安装包的安装和卸载](https://www.taosdata.com/blog/2019/08/09/566.html) 以及 [视频教程](https://www.taosdata.com/blog/2020/11/11/1941.html)。
 
 ## <a class="anchor" id="start"></a>轻松启动
 
@@ -53,21 +53,21 @@ $ systemctl status taosd
   如果系统中不支持 systemd，也可以用手动运行 /usr/local/taos/bin/taosd 方式启动 TDengine 服务。
 
   
-## <a class="anchor" id="console"></a>TDengine命令行程序
+## <a class="anchor" id="console"></a>TDengine 命令行程序
 
-执行TDengine命令行程序，您只要在Linux终端执行`taos`即可。
+执行 TDengine 命令行程序，您只要在 Linux 终端执行 `taos` 即可。
 
 ```bash
 $ taos
 ```
 
-如果TDengine终端连接服务成功，将会打印出欢迎消息和版本信息。如果失败，则会打印错误消息出来（请参考[FAQ](https://www.taosdata.com/cn/documentation/faq/)来解决终端连接服务端失败的问题）。TDengine终端的提示符号如下：
+如果 TDengine 终端连接服务成功，将会打印出欢迎消息和版本信息。如果失败，则会打印错误消息出来（请参考 [FAQ](https://www.taosdata.com/cn/documentation/faq/) 来解决终端连接服务端失败的问题）。TDengine 终端的提示符号如下：
 
 ```cmd
 taos>
 ```
 
-在TDengine终端中，用户可以通过SQL命令来创建/删除数据库、表等，并进行插入查询操作。在终端中运行的SQL语句需要以分号结束来运行。示例：
+在 TDengine 终端中，用户可以通过 SQL 命令来创建/删除数据库、表等，并进行插入查询操作。在终端中运行的 SQL 语句需要以分号结束来运行。示例：
 
 ```mysql
 create database demo;
@@ -77,23 +77,23 @@ insert into t values ('2019-07-15 00:00:00', 10);
 insert into t values ('2019-07-15 01:00:00', 20);
 select * from t;
            ts            |    speed    |
-===================================
- 19-07-15 00:00:00.000|         10|
- 19-07-15 01:00:00.000|         20|
-Query OK, 2 row(s) in set (0.001700s)
+========================================
+ 2019-07-15 00:00:00.000 |          10 |
+ 2019-07-15 01:00:00.000 |          20 |
+Query OK, 2 row(s) in set (0.003128s)
 ```
 
-除执行SQL语句外，系统管理员还可以从TDengine终端检查系统运行状态，添加删除用户账号等。
+除执行 SQL 语句外，系统管理员还可以从 TDengine 终端检查系统运行状态，添加删除用户账号等。
 
 ### 命令行参数
 
-您可通过配置命令行参数来改变TDengine终端的行为。以下为常用的几个命令行参数：
+您可通过配置命令行参数来改变 TDengine 终端的行为。以下为常用的几个命令行参数：
 
-- -c, --config-dir: 指定配置文件目录，默认为_/etc/taos_
-- -h, --host: 指定服务的IP地址，默认为本地服务
-- -s, --commands: 在不进入终端的情况下运行TDengine命令
-- -u, -- user:  连接TDengine服务器的用户名，缺省为root
-- -p, --password: 连接TDengine服务器的密码，缺省为taosdata
+- -c, --config-dir: 指定配置文件目录，默认为 _/etc/taos_
+- -h, --host: 指定服务的 FQDN 地址（也可以使用 IP），默认为连接本地服务
+- -s, --commands: 在不进入终端的情况下运行 TDengine 命令
+- -u, --user: 连接 TDengine 服务器的用户名，缺省为 root
+- -p, --password: 连接TDengine服务器的密码，缺省为 taosdata
 - -?, --help: 打印出所有命令行参数
 
 示例：
@@ -102,7 +102,7 @@ Query OK, 2 row(s) in set (0.001700s)
 $ taos -h 192.168.0.1 -s "use db; show tables;"
 ```
 
-### 运行SQL命令脚本
+### 运行 SQL 命令脚本
 
 TDengine 终端可以通过 `source` 命令来运行 SQL 命令脚本.
 
@@ -110,27 +110,27 @@ TDengine 终端可以通过 `source` 命令来运行 SQL 命令脚本.
 taos> source <filename>;
 ```
 
-### Shell小技巧
+### Shell 小技巧
 
 - 可以使用上下光标键查看历史输入的指令
-- 修改用户密码。在 shell 中使用 alter user 指令
+- 修改用户密码，在 shell 中使用 alter user 指令
 - ctrl+c 中止正在进行中的查询
 - 执行 `RESET QUERY CACHE` 清空本地缓存的表 schema
 
 
 ## <a class="anchor" id="demo"></a>TDengine 极速体验
 
-启动TDengine的服务，在Linux终端执行taosdemo
+启动 TDengine 的服务，在 Linux 终端执行 taosdemo
 
 ```bash
 $ taosdemo
 ```
 
-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"t0" 到"t9999"，每张表有10万条记录，每条记录有 （f1, f2， f3）三个字段，时间戳从"2017-07-14 10:40:00 000" 到"2017-07-14 10:41:39 999"，每张表带有标签areaid和loc, areaid被设置为1到10, loc被设置为"beijing"或者“shanghai"。
+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 "t0" 到 "t9999"，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 groupdId，groupdId 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10分钟，最后共插入10亿条记录。
+执行这条命令大概需要几分钟，最后共插入 1 亿条记录。
 
-在TDengine客户端输入查询命令，体验查询速度。
+在 TDengine 客户端输入查询命令，体验查询速度。
 
 - 查询超级表下记录总条数：
 
@@ -138,49 +138,43 @@ $ taosdemo
 taos> select count(*) from test.meters;
 ```
 
-- 查询10亿条记录的平均值、最大值、最小值等：
+- 查询 1 亿条记录的平均值、最大值、最小值等：
 
 ```mysql
-taos> select avg(f1), max(f2), min(f3) from test.meters;
+taos> select avg(current), max(voltage), min(phase) from test.meters;
 ```
 
-- 查询loc="beijing"的记录总条数：
+- 查询 location="beijing" 的记录总条数：
 
 ```mysql
-taos> select count(*) from test.meters where loc="beijing";
+taos> select count(*) from test.meters where location="beijing";
 ```
 
-- 查询areaid=10的所有记录的平均值、最大值、最小值等：
+- 查询 groupdId=10 的所有记录的平均值、最大值、最小值等：
 
 ```mysql
-taos> select avg(f1), max(f2), min(f3) from test.meters where areaid=10;
+taos> select avg(current), max(voltage), min(phase) from test.meters where groupdId=10;
 ```
 
-- 对表t10按10s进行平均值、最大值和最小值聚合统计：
+- 对表 t10 按 10s 进行平均值、最大值和最小值聚合统计：
 
 ```mysql
-taos> select avg(f1), max(f2), min(f3) from test.t10 interval(10s);
+taos> select avg(current), max(voltage), min(phase) from test.t10 interval(10s);
 ```
 
-**Note:** taosdemo命令本身带有很多选项，配置表的数目、记录条数等等，请执行 `taosdemo --help`详细列出。您可以设置不同参数进行体验。
+**Note:** taosdemo 命令本身带有很多选项，配置表的数目、记录条数等等，请执行 `taosdemo --help` 详细列出。您可以设置不同参数进行体验。
 
 
 ## 客户端和报警模块
 
-如果客户端和服务端运行在不同的电脑上，可以单独安装客户端。Linux和Windows安装包如下：
+如果客户端和服务端运行在不同的电脑上，可以单独安装客户端。Linux 和 Windows 安装包可以在 [这里](https://www.taosdata.com/cn/getting-started/#客户端) 下载。
 
-- TDengine-client-2.0.10.0-Linux-x64.tar.gz(3.0M)
-- TDengine-client-2.0.10.0-Windows-x64.exe(2.8M)
-- TDengine-client-2.0.10.0-Windows-x86.exe(2.8M)
-
-报警模块的Linux安装包如下（请参考[报警模块的使用方法](https://github.com/taosdata/TDengine/blob/master/alert/README_cn.md)）：
-
-- TDengine-alert-2.0.10.0-Linux-x64.tar.gz (8.1M)
+报警模块的 Linux 和 Windows 安装包请在 [所有下载链接](https://www.taosdata.com/cn/all-downloads/) 页面搜索“TDengine Alert Linux”章节或“TDengine Alert Windows”章节进行下载。使用方法请参考 [报警模块的使用方法](https://github.com/taosdata/TDengine/blob/master/alert/README_cn.md)。
 
   
 ## <a class="anchor" id="platforms"></a>支持平台列表
 
-### TDengine服务器支持的平台列表
+### TDengine 服务器支持的平台列表
 
 |                | **CentOS 6/7/8** | **Ubuntu 16/18/20** | **Other Linux** | **统信 UOS** | **银河/中标麒麟** | **凝思 V60/V80** | **华为 EulerOS** |
 | -------------- | --------------------- | ------------------------ | --------------- | --------------- | ------------------------- | --------------------- | --------------------- |
@@ -201,9 +195,9 @@ taos> select avg(f1), max(f2), min(f3) from test.t10 interval(10s);
 
 
 
-### TDengine客户端和连接器支持的平台列表
+### TDengine 客户端和连接器支持的平台列表
 
-目前TDengine的连接器可支持的平台广泛，目前包括：X64/X86/ARM64/ARM32/MIPS/Alpha等硬件平台，以及Linux/Win64/Win32等开发环境。
+目前 TDengine 的连接器可支持的平台广泛，目前包括：X64/X86/ARM64/ARM32/MIPS/Alpha 等硬件平台，以及 Linux/Win64/Win32 等开发环境。
 
 对照矩阵如下：
 
@@ -220,5 +214,5 @@ taos> select avg(f1), max(f2), min(f3) from test.t10 interval(10s);
 
 注： ● 表示经过官方测试验证， ○ 表示非官方测试验证。
 
-请跳转到 [连接器](https://www.taosdata.com/cn/documentation/connector)查看更详细的信息。
+请跳转到 [连接器](https://www.taosdata.com/cn/documentation/connector) 查看更详细的信息。
 

src/client/src/tscSQLParser.c

@@ -96,7 +96,7 @@ static int32_t parseIntervalOffset(SSqlCmd* pCmd, SQueryInfo* pQueryInfo, SStrTo
 static int32_t parseSlidingClause(SSqlCmd* pCmd, SQueryInfo* pQueryInfo, SStrToken* pSliding);
 static int32_t validateStateWindowNode(SSqlCmd* pCmd, SQueryInfo* pQueryInfo, SSqlNode* pSqlNode, bool isStable);
 
-static int32_t addProjectionExprAndResultField(SSqlCmd* pCmd, SQueryInfo* pQueryInfo, tSqlExprItem* pItem);
+static int32_t addProjectionExprAndResultField(SSqlCmd* pCmd, SQueryInfo* pQueryInfo, tSqlExprItem* pItem, bool outerQuery);
 
 static int32_t validateWhereNode(SQueryInfo* pQueryInfo, tSqlExpr** pExpr, SSqlObj* pSql);
 static int32_t validateFillNode(SSqlCmd* pCmd, SQueryInfo* pQueryInfo, SSqlNode* pSqlNode);
@@ -1809,8 +1809,8 @@ static bool hasNoneUserDefineExpr(SQueryInfo* pQueryInfo) {
   return false;
 }
 
-int32_t validateSelectNodeList(SSqlCmd* pCmd, SQueryInfo* pQueryInfo, SArray* pSelNodeList, bool isSTable, bool joinQuery,
-                               bool timeWindowQuery) {
+int32_t validateSelectNodeList(SSqlCmd* pCmd, SQueryInfo* pQueryInfo, SArray* pSelNodeList, bool joinQuery,
+                               bool timeWindowQuery, bool outerQuery) {
   assert(pSelNodeList != NULL && pCmd != NULL);
 
   const char* msg1 = "too many items in selection clause";
@@ -1852,7 +1852,7 @@ int32_t validateSelectNodeList(SSqlCmd* pCmd, SQueryInfo* pQueryInfo, SArray* pS
     } else if (type == SQL_NODE_TABLE_COLUMN || type == SQL_NODE_VALUE) {
       // use the dynamic array list to decide if the function is valid or not
       // select table_name1.field_name1, table_name2.field_name2  from table_name1, table_name2
-      if (addProjectionExprAndResultField(pCmd, pQueryInfo, pItem) != TSDB_CODE_SUCCESS) {
+      if (addProjectionExprAndResultField(pCmd, pQueryInfo, pItem, outerQuery) != TSDB_CODE_SUCCESS) {
         return TSDB_CODE_TSC_INVALID_OPERATION;
       }
     } else if (type == SQL_NODE_EXPR) {
@@ -1988,14 +1988,15 @@ static int32_t doAddProjectionExprAndResultFields(SQueryInfo* pQueryInfo, SColum
   return numOfTotalColumns;
 }
 
-int32_t addProjectionExprAndResultField(SSqlCmd* pCmd, SQueryInfo* pQueryInfo, tSqlExprItem* pItem) {
+int32_t addProjectionExprAndResultField(SSqlCmd* pCmd, SQueryInfo* pQueryInfo, tSqlExprItem* pItem, bool outerQuery) {
   const char* msg1 = "tag for normal table query is not allowed";
   const char* msg2 = "invalid column name";
+  const char* msg3 = "tbname not allowed in outer query";
 
   int32_t startPos = (int32_t)tscNumOfExprs(pQueryInfo);
-  int32_t optr = pItem->pNode->tokenId;
+  int32_t tokenId = pItem->pNode->tokenId;
 
-  if (optr == TK_ALL) {  // project on all fields
+  if (tokenId == TK_ALL) {  // project on all fields
     TSDB_QUERY_SET_TYPE(pQueryInfo->type, TSDB_QUERY_TYPE_PROJECTION_QUERY);
 
     SColumnIndex index = COLUMN_INDEX_INITIALIZER;
@@ -2019,7 +2020,7 @@ int32_t addProjectionExprAndResultField(SSqlCmd* pCmd, SQueryInfo* pQueryInfo, t
     if (pTableMeta->tableType != TSDB_TEMP_TABLE) {
       tscInsertPrimaryTsSourceColumn(pQueryInfo, pTableMeta->id.uid);
     }
-  } else if (optr == TK_STRING || optr == TK_INTEGER || optr == TK_FLOAT) {  // simple column projection query
+  } else if (tokenId == TK_STRING || tokenId == TK_INTEGER || tokenId == TK_FLOAT) {  // simple column projection query
     SColumnIndex index = COLUMN_INDEX_INITIALIZER;
 
     // user-specified constant value as a new result column
@@ -2027,13 +2028,13 @@ int32_t addProjectionExprAndResultField(SSqlCmd* pCmd, SQueryInfo* pQueryInfo, t
     index.tableIndex = 0;
 
     SSchema colSchema = tGetUserSpecifiedColumnSchema(&pItem->pNode->value, &pItem->pNode->exprToken, pItem->aliasName);
-    SExprInfo* pExpr =
-        tscAddFuncInSelectClause(pQueryInfo, startPos, TSDB_FUNC_PRJ, &index, &colSchema, TSDB_COL_UDC, getNewResColId(pCmd));
+    SExprInfo* pExpr = tscAddFuncInSelectClause(pQueryInfo, startPos, TSDB_FUNC_PRJ, &index, &colSchema, TSDB_COL_UDC,
+                                                getNewResColId(pCmd));
 
     // NOTE: the first parameter is reserved for the tag column id during join query process.
     pExpr->base.numOfParams = 2;
     tVariantAssign(&pExpr->base.param[1], &pItem->pNode->value);
-  } else if (optr == TK_ID) {
+  } else if (tokenId == TK_ID) {
     SColumnIndex index = COLUMN_INDEX_INITIALIZER;
 
     if (getColumnIndexByName(&pItem->pNode->columnName, pQueryInfo, &index, tscGetErrorMsgPayload(pCmd)) != TSDB_CODE_SUCCESS) {
@@ -2041,12 +2042,40 @@ int32_t addProjectionExprAndResultField(SSqlCmd* pCmd, SQueryInfo* pQueryInfo, t
     }
 
     if (index.columnIndex == TSDB_TBNAME_COLUMN_INDEX) {
+      if (outerQuery) {
+        STableMetaInfo* pTableMetaInfo = tscGetMetaInfo(pQueryInfo, index.tableIndex);
+        int32_t         numOfCols = tscGetNumOfColumns(pTableMetaInfo->pTableMeta);
+
+        bool existed = false;
+        SSchema* pSchema = pTableMetaInfo->pTableMeta->schema;
+        for (int32_t i = 0; i < numOfCols; ++i) {
+          if (strncasecmp(pSchema[i].name, TSQL_TBNAME_L, tListLen(pSchema[i].name)) == 0) {
+            existed = true;
+            index.columnIndex = i;
+            break;
+          }
+        }
+
+        if (!existed) {
+          return invalidOperationMsg(tscGetErrorMsgPayload(pCmd), msg3);
+        }
+
+        SSchema colSchema = pSchema[index.columnIndex];
+        char    name[TSDB_COL_NAME_LEN] = {0};
+        getColumnName(pItem, name, colSchema.name, sizeof(colSchema.name) - 1);
+
+        tstrncpy(colSchema.name, name, TSDB_COL_NAME_LEN);
+        /*SExprInfo* pExpr = */ tscAddFuncInSelectClause(pQueryInfo, startPos, TSDB_FUNC_PRJ, &index, &colSchema,
+                                                         TSDB_COL_NORMAL, getNewResColId(pCmd));
+      } else {
         SSchema colSchema = *tGetTbnameColumnSchema();
         char    name[TSDB_COL_NAME_LEN] = {0};
         getColumnName(pItem, name, colSchema.name, sizeof(colSchema.name) - 1);
 
         tstrncpy(colSchema.name, name, TSDB_COL_NAME_LEN);
-      /*SExprInfo* pExpr = */tscAddFuncInSelectClause(pQueryInfo, startPos, TSDB_FUNC_TAGPRJ, &index, &colSchema, TSDB_COL_TAG, getNewResColId(pCmd));
+        /*SExprInfo* pExpr = */ tscAddFuncInSelectClause(pQueryInfo, startPos, TSDB_FUNC_TAGPRJ, &index, &colSchema,
+                                                         TSDB_COL_TAG, getNewResColId(pCmd));
+      }
     } else {
       STableMetaInfo* pTableMetaInfo = tscGetMetaInfo(pQueryInfo, index.tableIndex);
       STableMeta*     pTableMeta = pTableMetaInfo->pTableMeta;
@@ -7156,8 +7185,7 @@ int32_t doCheckForStream(SSqlObj* pSql, SSqlInfo* pInfo) {
     return code;
   }
 
-  bool isSTable = UTIL_TABLE_IS_SUPER_TABLE(pTableMetaInfo);
-  if (validateSelectNodeList(&pSql->cmd, pQueryInfo, pSqlNode->pSelNodeList, isSTable, false, false) != TSDB_CODE_SUCCESS) {
+  if (validateSelectNodeList(&pSql->cmd, pQueryInfo, pSqlNode->pSelNodeList, false, false, false) != TSDB_CODE_SUCCESS) {
     return TSDB_CODE_TSC_INVALID_OPERATION;
   }
 
@@ -7945,7 +7973,7 @@ int32_t validateSqlNode(SSqlObj* pSql, SSqlNode* pSqlNode, SQueryInfo* pQueryInf
       return TSDB_CODE_TSC_INVALID_OPERATION;
     }
 
-    if (validateSelectNodeList(pCmd, pQueryInfo, pSqlNode->pSelNodeList, false, false, timeWindowQuery) !=
+    if (validateSelectNodeList(pCmd, pQueryInfo, pSqlNode->pSelNodeList, false, timeWindowQuery, true) !=
         TSDB_CODE_SUCCESS) {
       return TSDB_CODE_TSC_INVALID_OPERATION;
     }
@@ -8085,7 +8113,7 @@ int32_t validateSqlNode(SSqlObj* pSql, SSqlNode* pSqlNode, SQueryInfo* pQueryInf
     int32_t timeWindowQuery =
         (TPARSER_HAS_TOKEN(pSqlNode->interval.interval) || TPARSER_HAS_TOKEN(pSqlNode->sessionVal.gap));
 
-    if (validateSelectNodeList(pCmd, pQueryInfo, pSqlNode->pSelNodeList, isSTable, joinQuery, timeWindowQuery) !=
+    if (validateSelectNodeList(pCmd, pQueryInfo, pSqlNode->pSelNodeList, joinQuery, timeWindowQuery, false) !=
         TSDB_CODE_SUCCESS) {
       return TSDB_CODE_TSC_INVALID_OPERATION;
     }

src/client/src/tscSubquery.c

@@ -2542,7 +2542,7 @@ int32_t tscHandleMasterSTableQuery(SSqlObj *pSql) {
     SSqlObj* pSub = pSql->pSubs[j];
     SRetrieveSupport* pSupport = pSub->param;
     
-    tscDebug("0x%"PRIx64" sub:%p launch subquery, orderOfSub:%d.", pSql->self, pSub, pSupport->subqueryIndex);
+    tscDebug("0x%"PRIx64" sub:0x%"PRIx64" launch subquery, orderOfSub:%d.", pSql->self, pSub->self, pSupport->subqueryIndex);
     tscBuildAndSendRequest(pSub, NULL);
   }
 
@@ -2861,8 +2861,8 @@ static void tscRetrieveFromDnodeCallBack(void *param, TAOS_RES *tres, int numOfR
     assert(pRes->numOfRows == numOfRows);
     int64_t num = atomic_add_fetch_64(&pState->numOfRetrievedRows, numOfRows);
     
-    tscDebug("0x%"PRIx64" sub:%p retrieve numOfRows:%d totalNumOfRows:%" PRIu64 " from ep:%s, orderOfSub:%d",
-        pParentSql->self, pSql, pRes->numOfRows, pState->numOfRetrievedRows, pSql->epSet.fqdn[pSql->epSet.inUse], idx);
+    tscDebug("0x%"PRIx64" sub:0x%"PRIx64" retrieve numOfRows:%d totalNumOfRows:%" PRIu64 " from ep:%s, orderOfSub:%d",
+        pParentSql->self, pSql->self, pRes->numOfRows, pState->numOfRetrievedRows, pSql->epSet.fqdn[pSql->epSet.inUse], idx);
 
     if (num > tsMaxNumOfOrderedResults && tscIsProjectionQueryOnSTable(pQueryInfo, 0) && !(tscGetQueryInfo(&pParentSql->cmd)->distinctTag)) {
       tscError("0x%"PRIx64" sub:0x%"PRIx64" num of OrderedRes is too many, max allowed:%" PRId32 " , current:%" PRId64,

src/connector/jdbc/CMakeLists.txt

@@ -8,7 +8,7 @@ IF (TD_MVN_INSTALLED)
   ADD_CUSTOM_COMMAND(OUTPUT ${JDBC_CMD_NAME}
     POST_BUILD
     COMMAND mvn -Dmaven.test.skip=true install -f ${CMAKE_CURRENT_SOURCE_DIR}/pom.xml
-    COMMAND ${CMAKE_COMMAND} -E copy ${CMAKE_CURRENT_SOURCE_DIR}/target/taos-jdbcdriver-2.0.32-dist.jar ${LIBRARY_OUTPUT_PATH}
+    COMMAND ${CMAKE_COMMAND} -E copy ${CMAKE_CURRENT_SOURCE_DIR}/target/taos-jdbcdriver-*-dist.jar ${LIBRARY_OUTPUT_PATH}
     COMMAND mvn -Dmaven.test.skip=true clean -f ${CMAKE_CURRENT_SOURCE_DIR}/pom.xml
     COMMENT "build jdbc driver")
   ADD_CUSTOM_TARGET(${JDBC_TARGET_NAME} ALL WORKING_DIRECTORY ${EXECUTABLE_OUTPUT_PATH} DEPENDS ${JDBC_CMD_NAME})

src/connector/jdbc/pom.xml

@@ -3,7 +3,7 @@
     <modelVersion>4.0.0</modelVersion>
     <groupId>com.taosdata.jdbc</groupId>
     <artifactId>taos-jdbcdriver</artifactId>
-    <version>2.0.32</version>
+    <version>2.0.33</version>
     <packaging>jar</packaging>
     <name>JDBCDriver</name>
     <url>https://github.com/taosdata/TDengine/tree/master/src/connector/jdbc</url>
@@ -40,7 +40,7 @@
         <dependency>
             <groupId>junit</groupId>
             <artifactId>junit</artifactId>
-            <version>4.13</version>
+            <version>4.13.1</version>
             <scope>test</scope>
         </dependency>
         <!-- for restful -->
@@ -57,7 +57,7 @@
         <dependency>
             <groupId>com.google.guava</groupId>
             <artifactId>guava</artifactId>
-            <version>29.0-jre</version>
+            <version>30.0-jre</version>
         </dependency>
     </dependencies>
 

src/connector/jdbc/src/main/java/com/taosdata/jdbc/utils/Utils.java

@@ -110,7 +110,7 @@ public class Utils {
             return rawSql;
         // toLowerCase
         String preparedSql = rawSql.trim().toLowerCase();
-        String[] clause = new String[]{"values\\s*\\(.*?\\)", "tags\\s*\\(.*?\\)", "where\\s*.*"};
+        String[] clause = new String[]{"values\\s*\\([\\s\\S]*?\\)", "tags\\s*\\([\\s\\S]*?\\)", "where[\\s\\S]*"};
         Map<Integer, Integer> placeholderPositions = new HashMap<>();
         RangeSet<Integer> clauseRangeSet = TreeRangeSet.create();
         findPlaceholderPosition(preparedSql, placeholderPositions);

src/kit/taosdemo/taosdemo.c

@@ -75,7 +75,7 @@ enum TEST_MODE {
 
 #define MAX_RECORDS_PER_REQ     32766
 
-#define HEAD_BUFF_LEN    1024*24  // 16*1024 + (192+32)*2 + insert into ..
+#define HEAD_BUFF_LEN       TSDB_MAX_COLUMNS*24  // 16*MAX_COLUMNS + (192+32)*2 + insert into ..
 
 #define MAX_SQL_SIZE       65536
 #define BUFFER_SIZE        (65536*2)
@@ -84,20 +84,17 @@ enum TEST_MODE {
 #define MAX_PASSWORD_SIZE  64
 #define MAX_HOSTNAME_SIZE  64
 #define MAX_TB_NAME_SIZE   64
-#define MAX_DATA_SIZE      (16*1024)+20     // max record len: 16*1024, timestamp string and ,('') need extra space
-#define MAX_NUM_DATATYPE   10
+#define MAX_DATA_SIZE      (16*TSDB_MAX_COLUMNS)+20     // max record len: 16*MAX_COLUMNS, timestamp string and ,('') need extra space
 #define OPT_ABORT          1 /* –abort */
 #define STRING_LEN         60000
 #define MAX_PREPARED_RAND  1000000
 #define MAX_FILE_NAME_LEN  256              // max file name length on linux is 255.
 
 #define MAX_SAMPLES_ONCE_FROM_FILE   10000
-#define   MAX_NUM_DATATYPE 10
+#define MAX_NUM_COLUMNS        (TSDB_MAX_COLUMNS - 1)      // exclude first column timestamp
 
 #define MAX_DB_COUNT            8
 #define MAX_SUPER_TABLE_COUNT   200
-#define   MAX_COLUMN_COUNT       1024
-#define   MAX_TAG_COUNT          128
 
 #define MAX_QUERY_SQL_COUNT     100
 #define MAX_QUERY_SQL_LENGTH    1024
@@ -218,7 +215,7 @@ typedef struct SArguments_S {
     bool     performance_print;
     char *   output_file;
     bool     async_mode;
-    char *   datatype[MAX_NUM_DATATYPE + 1];
+    char *   datatype[MAX_NUM_COLUMNS + 1];
     uint32_t len_of_binary;
     uint32_t num_of_CPR;
     uint32_t num_of_threads;
@@ -274,9 +271,9 @@ typedef struct SSuperTable_S {
   char         tagsFile[MAX_FILE_NAME_LEN];
 
   uint32_t     columnCount;
-  StrColumn    columns[MAX_COLUMN_COUNT];
+  StrColumn    columns[TSDB_MAX_COLUMNS];
   uint32_t     tagCount;
-  StrColumn    tags[MAX_TAG_COUNT];
+  StrColumn    tags[TSDB_MAX_TAGS];
 
   char*        childTblName;
   char*        colsOfCreateChildTable;
@@ -731,7 +728,7 @@ static void printHelp() {
             "The number of columns per record. Default is ",
             DEFAULT_DATATYPE_NUM,
             ". Max values is ",
-            MAX_NUM_DATATYPE);
+            MAX_NUM_COLUMNS);
     printf("%s%s%s%s\n", indent, indent, indent,
             "All of the new column(s) type is INT. If use -b to specify column type, -l will be ignored.");
     printf("%s%s%s%s\n", indent, "-T", indent,
@@ -937,19 +934,18 @@ static void parse_args(int argc, char *argv[], SArguments *arguments) {
             }
             arguments->num_of_CPR = atoi(argv[++i]);
 
-            if (arguments->num_of_CPR > MAX_NUM_DATATYPE) {
-                printf("WARNING: max acceptible columns count is %d\n", MAX_NUM_DATATYPE);
+            if (arguments->num_of_CPR > MAX_NUM_COLUMNS) {
+                printf("WARNING: max acceptible columns count is %d\n", MAX_NUM_COLUMNS);
                 prompt();
-                arguments->num_of_CPR = MAX_NUM_DATATYPE;
+                arguments->num_of_CPR = MAX_NUM_COLUMNS;
             }
 
             for (int col = DEFAULT_DATATYPE_NUM; col < arguments->num_of_CPR; col ++) {
                 arguments->datatype[col] = "INT";
             }
-            for (int col = arguments->num_of_CPR; col < MAX_NUM_DATATYPE; col++) {
+            for (int col = arguments->num_of_CPR; col < MAX_NUM_COLUMNS; col++) {
                 arguments->datatype[col] = NULL;
             }
-
         } else if (strcmp(argv[i], "-b") == 0) {
             arguments->demo_mode = false;
             if (argc == i+1) {
@@ -999,7 +995,7 @@ static void parse_args(int argc, char *argv[], SArguments *arguments) {
                     }
                     arguments->datatype[index++] = token;
                     token = strsep(&running, ",");
-                    if (index >= MAX_NUM_DATATYPE) break;
+                    if (index >= MAX_NUM_COLUMNS) break;
                 }
                 arguments->datatype[index] = NULL;
             }
@@ -1095,7 +1091,7 @@ static void parse_args(int argc, char *argv[], SArguments *arguments) {
     }
 
     int columnCount;
-    for (columnCount = 0; columnCount < MAX_NUM_DATATYPE; columnCount ++) {
+    for (columnCount = 0; columnCount < MAX_NUM_COLUMNS; columnCount ++) {
         if (g_args.datatype[columnCount] == NULL) {
             break;
         }
@@ -1120,7 +1116,7 @@ static void parse_args(int argc, char *argv[], SArguments *arguments) {
                 arguments->use_metric ? "true" : "false");
         if (*(arguments->datatype)) {
             printf("# Specified data type:               ");
-            for (int i = 0; i < MAX_NUM_DATATYPE; i++)
+            for (int i = 0; i < MAX_NUM_COLUMNS; i++)
                 if (arguments->datatype[i])
                     printf("%s,", arguments->datatype[i]);
                 else
@@ -3378,9 +3374,9 @@ static bool getColumnAndTagTypeFromInsertJsonFile(
   }
 
   int columnSize = cJSON_GetArraySize(columns);
-  if ((columnSize + 1/* ts */) > MAX_COLUMN_COUNT) {
+  if ((columnSize + 1/* ts */) > TSDB_MAX_COLUMNS) {
     errorPrint("%s() LN%d, failed to read json, column size overflow, max column size is %d\n",
-            __func__, __LINE__, MAX_COLUMN_COUNT);
+            __func__, __LINE__, TSDB_MAX_COLUMNS);
     goto PARSE_OVER;
   }
 
@@ -3436,9 +3432,9 @@ static bool getColumnAndTagTypeFromInsertJsonFile(
     }
   }
 
-  if ((index + 1 /* ts */) > MAX_COLUMN_COUNT) {
+  if ((index + 1 /* ts */) > MAX_NUM_COLUMNS) {
     errorPrint("%s() LN%d, failed to read json, column size overflow, allowed max column size is %d\n",
-            __func__, __LINE__, MAX_COLUMN_COUNT);
+            __func__, __LINE__, MAX_NUM_COLUMNS);
     goto PARSE_OVER;
   }
 
@@ -3455,9 +3451,9 @@ static bool getColumnAndTagTypeFromInsertJsonFile(
   }
 
   int tagSize = cJSON_GetArraySize(tags);
-  if (tagSize > MAX_TAG_COUNT) {
+  if (tagSize > TSDB_MAX_TAGS) {
     errorPrint("%s() LN%d, failed to read json, tags size overflow, max tag size is %d\n",
-        __func__, __LINE__, MAX_TAG_COUNT);
+        __func__, __LINE__, TSDB_MAX_TAGS);
     goto PARSE_OVER;
   }
 
@@ -3507,17 +3503,17 @@ static bool getColumnAndTagTypeFromInsertJsonFile(
     }
   }
 
-  if (index > MAX_TAG_COUNT) {
+  if (index > TSDB_MAX_TAGS) {
     errorPrint("%s() LN%d, failed to read json, tags size overflow, allowed max tag count is %d\n",
-        __func__, __LINE__, MAX_TAG_COUNT);
+        __func__, __LINE__, TSDB_MAX_TAGS);
     goto PARSE_OVER;
   }
 
   superTbls->tagCount = index;
 
-  if ((superTbls->columnCount + superTbls->tagCount + 1 /* ts */) > MAX_COLUMN_COUNT) {
+  if ((superTbls->columnCount + superTbls->tagCount + 1 /* ts */) > TSDB_MAX_COLUMNS) {
     errorPrint("%s() LN%d, columns + tags is more than allowed max columns count: %d\n",
-        __func__, __LINE__, MAX_COLUMN_COUNT);
+        __func__, __LINE__, TSDB_MAX_COLUMNS);
     goto PARSE_OVER;
   }
   ret = true;
@@ -7949,7 +7945,7 @@ static void setParaFromArg(){
     g_Dbs.db[0].superTbls[0].maxSqlLen = g_args.max_sql_len;
 
     g_Dbs.db[0].superTbls[0].columnCount = 0;
-    for (int i = 0; i < MAX_NUM_DATATYPE; i++) {
+    for (int i = 0; i < MAX_NUM_COLUMNS; i++) {
       if (data_type[i] == NULL) {
         break;
       }

src/query/src/qAggMain.c

@@ -1758,6 +1758,49 @@ static void valuePairAssign(tValuePair *dst, int16_t type, const char *val, int6
     memcpy((dst)->pTags, (src)->pTags, (size_t)(__l)); \
   } while (0)
 
+static int32_t topBotComparFn(const void *p1, const void *p2, const void *param)
+{
+  uint16_t     type = *(uint16_t *) param;
+  tValuePair  *val1 = *(tValuePair **) p1;
+  tValuePair  *val2 = *(tValuePair **) p2;
+
+  if (IS_SIGNED_NUMERIC_TYPE(type)) {
+    if (val1->v.i64 == val2->v.i64) {
+      return 0;
+    }
+
+    return (val1->v.i64 > val2->v.i64) ? 1 : -1;
+   } else if (IS_UNSIGNED_NUMERIC_TYPE(type)) {
+     if (val1->v.u64 == val2->v.u64) {
+       return 0;
+     }
+
+     return (val1->v.u64 > val2->v.u64) ? 1 : -1;
+  }
+
+  if (val1->v.dKey == val2->v.dKey) {
+    return 0;
+  }
+
+  return (val1->v.dKey > val2->v.dKey) ? 1 : -1;
+}
+
+static void topBotSwapFn(void *dst, void *src, const void *param)
+{
+  char         tag[32768];
+  tValuePair   temp;
+  uint16_t     tagLen = *(uint16_t *) param;
+  tValuePair  *vdst = *(tValuePair **) dst;
+  tValuePair  *vsrc = *(tValuePair **) src;
+
+  memset(tag, 0, sizeof(tag));
+  temp.pTags = tag;
+
+  VALUEPAIRASSIGN(&temp, vdst, tagLen);
+  VALUEPAIRASSIGN(vdst, vsrc, tagLen);
+  VALUEPAIRASSIGN(vsrc, &temp, tagLen);
+}
+
 static void do_top_function_add(STopBotInfo *pInfo, int32_t maxLen, void *pData, int64_t ts, uint16_t type,
                                 SExtTagsInfo *pTagInfo, char *pTags, int16_t stage) {
   tVariant val = {0};
@@ -1767,59 +1810,17 @@ static void do_top_function_add(STopBotInfo *pInfo, int32_t maxLen, void *pData,
   assert(pList != NULL);
 
   if (pInfo->num < maxLen) {
-    if (pInfo->num == 0 ||
-        (IS_SIGNED_NUMERIC_TYPE(type) && val.i64 >= pList[pInfo->num - 1]->v.i64) ||
-        (IS_UNSIGNED_NUMERIC_TYPE(type) && val.u64 >= pList[pInfo->num - 1]->v.u64) ||
-        (IS_FLOAT_TYPE(type) && val.dKey >= pList[pInfo->num - 1]->v.dKey)) {
-      valuePairAssign(pList[pInfo->num], type, (const char*)&val.i64, ts, pTags, pTagInfo, stage);
-    } else {
-      int32_t i = pInfo->num - 1;
-      if (IS_SIGNED_NUMERIC_TYPE(type)) {
-        while (i >= 0 && pList[i]->v.i64 > val.i64) {
-          VALUEPAIRASSIGN(pList[i + 1], pList[i], pTagInfo->tagsLen);
-          i -= 1;
-        }
-      } else if (IS_UNSIGNED_NUMERIC_TYPE(type)) {
-        while (i >= 0 && pList[i]->v.u64 > val.u64) {
-          VALUEPAIRASSIGN(pList[i + 1], pList[i], pTagInfo->tagsLen);
-          i -= 1;
-        }
-      } else {
-        while (i >= 0 && pList[i]->v.dKey > val.dKey) {
-          VALUEPAIRASSIGN(pList[i + 1], pList[i], pTagInfo->tagsLen);
-          i -= 1;
-        }
-      }
+    valuePairAssign(pList[pInfo->num], type, (const char *)&val.i64, ts, pTags, pTagInfo, stage);
 
-      valuePairAssign(pList[i + 1], type, (const char*) &val.i64, ts, pTags, pTagInfo, stage);
-    }
+    taosheapsort((void *) pList, sizeof(tValuePair **), pInfo->num + 1, (const void *) &type, topBotComparFn, (const void *) &pTagInfo->tagsLen, topBotSwapFn, 0);
  
     pInfo->num++;
   } else {
-    int32_t i = 0;
-
     if ((IS_SIGNED_NUMERIC_TYPE(type) && val.i64 > pList[0]->v.i64) ||
         (IS_UNSIGNED_NUMERIC_TYPE(type) && val.u64 > pList[0]->v.u64) ||
         (IS_FLOAT_TYPE(type) && val.dKey > pList[0]->v.dKey)) {
-      // find the appropriate the slot position
-      if (IS_SIGNED_NUMERIC_TYPE(type)) {
-        while (i + 1 < maxLen && pList[i + 1]->v.i64 < val.i64) {
-          VALUEPAIRASSIGN(pList[i], pList[i + 1], pTagInfo->tagsLen);
-          i += 1;
-        }
-      } if (IS_UNSIGNED_NUMERIC_TYPE(type)) {
-        while (i + 1 < maxLen && pList[i + 1]->v.u64 < val.u64) {
-          VALUEPAIRASSIGN(pList[i], pList[i + 1], pTagInfo->tagsLen);
-          i += 1;
-        }
-      } else {
-        while (i + 1 < maxLen && pList[i + 1]->v.dKey < val.dKey) {
-          VALUEPAIRASSIGN(pList[i], pList[i + 1], pTagInfo->tagsLen);
-          i += 1;
-        }
-      }
-
-      valuePairAssign(pList[i], type, (const char *)&val.i64, ts, pTags, pTagInfo, stage);
+      valuePairAssign(pList[0], type, (const char *)&val.i64, ts, pTags, pTagInfo, stage);
+      taosheapadjust((void *) pList, sizeof(tValuePair **), 0, maxLen - 1, (const void *) &type, topBotComparFn, (const void *) &pTagInfo->tagsLen, topBotSwapFn, 0);
     }
   }
 }
@@ -1833,57 +1834,17 @@ static void do_bottom_function_add(STopBotInfo *pInfo, int32_t maxLen, void *pDa
   assert(pList != NULL);
 
   if (pInfo->num < maxLen) {
-    if (pInfo->num == 0) {
-      valuePairAssign(pList[pInfo->num], type, (const char*) &val.i64, ts, pTags, pTagInfo, stage);
-    } else {
-      int32_t i = pInfo->num - 1;
-      
-      if (IS_SIGNED_NUMERIC_TYPE(type)) {
-        while (i >= 0 && pList[i]->v.i64 < val.i64) {
-          VALUEPAIRASSIGN(pList[i + 1], pList[i], pTagInfo->tagsLen);
-          i -= 1;
-        }
-      } else if (IS_UNSIGNED_NUMERIC_TYPE(type)) {
-          while (i >= 0 && pList[i]->v.u64 < val.u64) {
-            VALUEPAIRASSIGN(pList[i + 1], pList[i], pTagInfo->tagsLen);
-            i -= 1;
-          }
-      } else {
-        while (i >= 0 && pList[i]->v.dKey < val.dKey) {
-          VALUEPAIRASSIGN(pList[i + 1], pList[i], pTagInfo->tagsLen);
-          i -= 1;
-        }
-      }
+    valuePairAssign(pList[pInfo->num], type, (const char *)&val.i64, ts, pTags, pTagInfo, stage);
 
-      valuePairAssign(pList[i + 1], type, (const char*)&val.i64, ts, pTags, pTagInfo, stage);
-    }
+    taosheapsort((void *) pList, sizeof(tValuePair **), pInfo->num + 1, (const void *) &type, topBotComparFn, (const void *) &pTagInfo->tagsLen, topBotSwapFn, 1);
 
     pInfo->num++;
   } else {
-    int32_t i = 0;
-    
     if ((IS_SIGNED_NUMERIC_TYPE(type) && val.i64 < pList[0]->v.i64) ||
         (IS_UNSIGNED_NUMERIC_TYPE(type) && val.u64 < pList[0]->v.u64) ||
         (IS_FLOAT_TYPE(type) && val.dKey < pList[0]->v.dKey)) {
-      // find the appropriate the slot position
-      if (IS_SIGNED_NUMERIC_TYPE(type)) {
-        while (i + 1 < maxLen && pList[i + 1]->v.i64 > val.i64) {
-          VALUEPAIRASSIGN(pList[i], pList[i + 1], pTagInfo->tagsLen);
-          i += 1;
-        }
-      } if (IS_UNSIGNED_NUMERIC_TYPE(type)) {
-        while (i + 1 < maxLen && pList[i + 1]->v.u64 > val.u64) {
-          VALUEPAIRASSIGN(pList[i], pList[i + 1], pTagInfo->tagsLen);
-          i += 1;
-        }
-      } else {
-        while (i + 1 < maxLen && pList[i + 1]->v.dKey > val.dKey) {
-          VALUEPAIRASSIGN(pList[i], pList[i + 1], pTagInfo->tagsLen);
-          i += 1;
-        }
-      }
-      
-      valuePairAssign(pList[i], type, (const char*)&val.i64, ts, pTags, pTagInfo, stage);
+      valuePairAssign(pList[0], type, (const char *)&val.i64, ts, pTags, pTagInfo, stage);
+      taosheapadjust((void *) pList, sizeof(tValuePair **), 0, maxLen - 1, (const void *) &type, topBotComparFn, (const void *) &pTagInfo->tagsLen, topBotSwapFn, 1);
     }
   }
 }

src/util/inc/talgo.h

@@ -34,6 +34,7 @@ typedef int (*__compar_fn_t) (const void *, const void *);
 #define elePtrAt(base, size, idx) (void *)((char *)(base) + (size) * (idx))
 
 typedef int32_t (*__ext_compar_fn_t)(const void *p1, const void *p2, const void *param);
+typedef void (*__ext_swap_fn_t)(void *p1, void *p2, const void *param);
 
 /**
  * quick sort, with the compare function requiring additional parameters support
@@ -59,6 +60,38 @@ void taosqsort(void *src, size_t numOfElem, size_t size, const void* param, __ex
  */
 void *taosbsearch(const void *key, const void *base, size_t nmemb, size_t size, __compar_fn_t fn, int flags);
 
+/**
+ * adjust heap
+ *
+ * @param base: the start address of array
+ * @param size: size of every item in array
+ * @param start: the first index
+ * @param end: the last index
+ * @param parcompar: parameters for compare function
+ * @param compar: user defined compare function
+ * @param parswap: parameters for swap function
+ * @param swap: user defined swap function, the default swap function doswap will be used if swap is NULL
+ * @param maxroot: if heap is max root heap
+ * @return
+ */
+void taosheapadjust(void *base, int32_t size, int32_t start, int32_t end, const void *parcompar, __ext_compar_fn_t compar, const void *parswap, __ext_swap_fn_t swap, bool maxroot);
+
+/**
+ * sort heap to make sure it is a max/min root heap
+ *
+ * @param base: the start address of array
+ * @param size: size of every item in array
+ * @param len: the length of array
+ * @param parcompar: parameters for compare function
+ * @param compar: user defined compare function
+ * @param parswap: parameters for swap function
+ * @param swap: user defined swap function, the default swap function doswap will be used if swap is NULL
+ * @param maxroot: if heap is max root heap
+ * @return
+ */
+void taosheapsort(void *base, int32_t size, int32_t len, const void *parcompar, __ext_compar_fn_t compar, const void *parswap, __ext_swap_fn_t swap, bool maxroot);
+
+
 #ifdef __cplusplus
 }
 #endif

src/util/src/talgo.c

@@ -225,3 +225,89 @@ void * taosbsearch(const void *key, const void *base, size_t nmemb, size_t size,
   
   return NULL;
 }
+
+void taosheapadjust(void *base, int32_t size, int32_t start, int32_t end, const void *parcompar, __ext_compar_fn_t compar, const void *parswap, __ext_swap_fn_t swap, bool maxroot)
+{
+  int32_t  parent;
+  int32_t  child;
+  char    *buf;
+
+  if (base && size > 0 && compar) {
+    parent = start;
+    child = 2 * parent + 1;
+
+    if (swap == NULL) {
+      buf = calloc(1, size);
+      if (buf == NULL) {
+        return;
+      }
+    }
+
+    if (maxroot) {
+      while (child <= end) {
+        if (child + 1 <= end && (*compar)(elePtrAt(base, size, child), elePtrAt(base, size, child + 1), parcompar) < 0) {
+          child++;
+        }
+
+        if ((*compar)(elePtrAt(base, size, parent), elePtrAt(base, size, child), parcompar) > 0) {
+          break;
+        }
+
+        if (swap == NULL) {
+          doswap(elePtrAt(base, size, parent), elePtrAt(base, size, child), size, buf);
+        } else {
+          (*swap)(elePtrAt(base, size, parent), elePtrAt(base, size, child), parswap);
+        }
+
+        parent = child;
+        child = 2 * parent + 1;
+      }
+    } else {
+      while (child <= end) {
+        if (child + 1 <= end && (*compar)(elePtrAt(base, size, child), elePtrAt(base, size, child + 1), parcompar) > 0) {
+          child++;
+        }
+
+        if ((*compar)(elePtrAt(base, size, parent), elePtrAt(base, size, child), parcompar) < 0) {
+          break;
+        }
+
+        if (swap == NULL) {
+          doswap(elePtrAt(base, size, parent), elePtrAt(base, size, child), size, buf);
+        } else {
+          (*swap)(elePtrAt(base, size, parent), elePtrAt(base, size, child), parswap);
+        }
+
+        parent = child;
+        child = 2 * parent + 1;
+      }
+    }
+
+    if (swap == NULL) {
+      tfree(buf);
+    }
+  }
+}
+
+void taosheapsort(void *base, int32_t size, int32_t len, const void *parcompar, __ext_compar_fn_t compar, const void *parswap, __ext_swap_fn_t swap, bool maxroot)
+{
+  int32_t  i;
+
+  if (base && size > 0) {
+    for (i = len / 2 - 1; i >= 0; i--) {
+      taosheapadjust(base, size, i, len - 1, parcompar, compar, parswap, swap, maxroot);
+    }
+  }
+
+/*
+  char *buf = calloc(1, size);
+
+  for (i = len - 1; i > 0; i--) {
+    doswap(elePtrAt(base, size, 0), elePtrAt(base, size, i));
+    taosheapadjust(base, size, 0, i - 1, parcompar, compar, parswap, swap, maxroot);
+  }
+
+  tfree(buf);
+*/
+}
+

tests/comparisonTest/cassandra/cassandratest/pom.xml

@@ -75,7 +75,7 @@
     <dependency>
       <groupId>junit</groupId>
       <artifactId>junit</artifactId>
-      <version>4.11</version>
+      <version>4.13.1</version>
       <scope>test</scope>
     </dependency>
 

tests/comparisonTest/opentsdb/opentsdbtest/pom.xml

@@ -87,14 +87,14 @@
     <dependency>
       <groupId>junit</groupId>
       <artifactId>junit</artifactId>
-      <version>4.11</version>
+      <version>4.13.1</version>
       <scope>test</scope>
     </dependency>
 
     <dependency>
       <groupId>com.google.guava</groupId>
       <artifactId>guava</artifactId>
-      <version>29.0-jre</version>
+      <version>30.0-jre</version>
     </dependency>
 
     <dependency>

tests/examples/JDBC/SpringJdbcTemplate/pom.xml

@@ -40,7 +40,7 @@
         <dependency>
             <groupId>junit</groupId>
             <artifactId>junit</artifactId>
-            <version>4.13</version>
+            <version>4.13.1</version>
             <scope>test</scope>
         </dependency>
 

tests/examples/JDBC/connectionPools/pom.xml

@@ -4,6 +4,11 @@
          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
 
+    <properties>
+     <maven.compiler.source>1.8</maven.compiler.source>
+     <maven.compiler.target>1.8</maven.compiler.target>
+    </properties>
+
     <groupId>com.taosdata.demo</groupId>
     <artifactId>connectionPools</artifactId>
     <version>1.0-SNAPSHOT</version>
@@ -46,9 +51,9 @@
         </dependency>
         <!-- log4j -->
         <dependency>
-            <groupId>log4j</groupId>
-            <artifactId>log4j</artifactId>
-            <version>1.2.17</version>
+            <groupId>org.apache.logging.log4j</groupId>
+            <artifactId>log4j-core</artifactId>
+            <version>2.14.1</version>
         </dependency>
         <!-- proxool -->
         <dependency>

tests/examples/JDBC/connectionPools/src/main/java/com/taosdata/example/ConnectionPoolDemo.java

@@ -5,7 +5,8 @@ import com.taosdata.example.pool.C3p0Builder;
 import com.taosdata.example.pool.DbcpBuilder;
 import com.taosdata.example.pool.DruidPoolBuilder;
 import com.taosdata.example.pool.HikariCpBuilder;
-import org.apache.log4j.Logger;
+import org.apache.logging.log4j.Logger;
+import org.apache.logging.log4j.LogManager;
 
 import javax.sql.DataSource;
 import java.sql.Connection;
@@ -17,7 +18,7 @@ import java.util.concurrent.TimeUnit;
 
 public class ConnectionPoolDemo {
 
-    private static Logger logger = Logger.getLogger(DruidPoolBuilder.class);
+    private static Logger logger = LogManager.getLogger(DruidPoolBuilder.class);
     private static final String dbName = "pool_test";
 
     private static String poolType = "hikari";

tests/examples/JDBC/connectionPools/src/main/java/com/taosdata/example/common/InsertTask.java

 package com.taosdata.example.common;
 
-import org.apache.log4j.Logger;
+import org.apache.logging.log4j.Logger;
+import org.apache.logging.log4j.LogManager;
 
 import javax.sql.DataSource;
 import java.sql.Connection;
@@ -10,7 +11,7 @@ import java.util.Random;
 
 public class InsertTask implements Runnable {
     private final Random random = new Random(System.currentTimeMillis());
-    private static final Logger logger = Logger.getLogger(InsertTask.class);
+    private static final Logger logger = LogManager.getLogger(InsertTask.class);
 
     private final DataSource ds;
     private final String dbName;

tests/examples/JDBC/mybatisplus-demo/pom.xml

@@ -68,7 +68,7 @@
         <dependency>
             <groupId>junit</groupId>
             <artifactId>junit</artifactId>
-            <version>4.12</version>
+            <version>4.13.1</version>
             <scope>test</scope>
         </dependency>
     </dependencies>

tests/examples/JDBC/taosdemo/pom.xml

@@ -4,7 +4,7 @@
     <modelVersion>4.0.0</modelVersion>
     <groupId>com.taosdata</groupId>
     <artifactId>taosdemo</artifactId>
-    <version>2.0</version>
+    <version>2.0.1</version>
     <name>taosdemo</name>
     <packaging>jar</packaging>
     <description>Demo project for TDengine</description>
@@ -81,20 +81,20 @@
         <dependency>
             <groupId>mysql</groupId>
             <artifactId>mysql-connector-java</artifactId>
-            <version>5.1.47</version>
+            <version>8.0.16</version>
             <scope>test</scope>
         </dependency>
         <!-- log4j -->
         <dependency>
-            <groupId>log4j</groupId>
-            <artifactId>log4j</artifactId>
-            <version>1.2.17</version>
+            <groupId>org.apache.logging.log4j</groupId>
+            <artifactId>log4j-core</artifactId>
+            <version>2.14.1</version>
         </dependency>
         <!-- junit -->
         <dependency>
             <groupId>junit</groupId>
             <artifactId>junit</artifactId>
-            <version>4.12</version>
+            <version>4.13.1</version>
             <scope>test</scope>
         </dependency>
         <!-- lombok -->

tests/examples/JDBC/taosdemo/src/main/java/com/taosdata/taosdemo/TaosDemoApplication.java

@@ -8,7 +8,8 @@ import com.taosdata.taosdemo.service.SqlExecuteTask;
 import com.taosdata.taosdemo.service.SubTableService;
 import com.taosdata.taosdemo.service.SuperTableService;
 import com.taosdata.taosdemo.service.data.SuperTableMetaGenerator;
-import org.apache.log4j.Logger;
+import org.apache.logging.log4j.Logger;
+import org.apache.logging.log4j.LogManager;
 
 import javax.sql.DataSource;
 import java.io.IOException;
@@ -20,7 +21,7 @@ import java.util.Map;
 
 public class TaosDemoApplication {
 
-    private static final Logger logger = Logger.getLogger(TaosDemoApplication.class);
+    private static final Logger logger = LogManager.getLogger(TaosDemoApplication.class);
 
     public static void main(String[] args) throws IOException {
         // 读配置参数

tests/examples/JDBC/taosdemo/src/main/java/com/taosdata/taosdemo/dao/DatabaseMapperImpl.java

 package com.taosdata.taosdemo.dao;
 
 import com.taosdata.taosdemo.utils.SqlSpeller;
-import org.apache.log4j.Logger;
+import org.apache.logging.log4j.Logger;
+import org.apache.logging.log4j.LogManager;
 import org.springframework.jdbc.core.JdbcTemplate;
 
 import javax.sql.DataSource;
 import java.util.Map;
 
 public class DatabaseMapperImpl implements DatabaseMapper {
-    private static final Logger logger = Logger.getLogger(DatabaseMapperImpl.class);
+    private static final Logger logger = LogManager.getLogger(DatabaseMapperImpl.class);
 
     private final JdbcTemplate jdbcTemplate;
 

tests/examples/JDBC/taosdemo/src/main/java/com/taosdata/taosdemo/dao/SubTableMapperImpl.java

@@ -3,7 +3,8 @@ package com.taosdata.taosdemo.dao;
 import com.taosdata.taosdemo.domain.SubTableMeta;
 import com.taosdata.taosdemo.domain.SubTableValue;
 import com.taosdata.taosdemo.utils.SqlSpeller;
-import org.apache.log4j.Logger;
+import org.apache.logging.log4j.Logger;
+import org.apache.logging.log4j.LogManager;
 import org.springframework.jdbc.core.JdbcTemplate;
 
 import javax.sql.DataSource;
@@ -11,7 +12,7 @@ import java.util.List;
 
 public class SubTableMapperImpl implements SubTableMapper {
 
-    private static final Logger logger = Logger.getLogger(SubTableMapperImpl.class);
+    private static final Logger logger = LogManager.getLogger(SubTableMapperImpl.class);
     private final JdbcTemplate jdbcTemplate;
 
     public SubTableMapperImpl(DataSource dataSource) {

tests/examples/JDBC/taosdemo/src/main/java/com/taosdata/taosdemo/dao/SuperTableMapperImpl.java

@@ -2,13 +2,14 @@ package com.taosdata.taosdemo.dao;
 
 import com.taosdata.taosdemo.domain.SuperTableMeta;
 import com.taosdata.taosdemo.utils.SqlSpeller;
-import org.apache.log4j.Logger;
+import org.apache.logging.log4j.Logger;
+import org.apache.logging.log4j.LogManager;
 import org.springframework.jdbc.core.JdbcTemplate;
 
 import javax.sql.DataSource;
 
 public class SuperTableMapperImpl implements SuperTableMapper {
-    private static final Logger logger = Logger.getLogger(SuperTableMapperImpl.class);
+    private static final Logger logger = LogManager.getLogger(SuperTableMapperImpl.class);
     private JdbcTemplate jdbcTemplate;
 
     public SuperTableMapperImpl(DataSource dataSource) {

tests/examples/JDBC/taosdemo/src/main/java/com/taosdata/taosdemo/dao/TableMapperImpl.java

@@ -3,13 +3,14 @@ package com.taosdata.taosdemo.dao;
 import com.taosdata.taosdemo.domain.TableMeta;
 import com.taosdata.taosdemo.domain.TableValue;
 import com.taosdata.taosdemo.utils.SqlSpeller;
-import org.apache.log4j.Logger;
+import org.apache.logging.log4j.Logger;
+import org.apache.logging.log4j.LogManager;
 import org.springframework.jdbc.core.JdbcTemplate;
 
 import java.util.List;
 
 public class TableMapperImpl implements TableMapper {
-    private static final Logger logger = Logger.getLogger(TableMapperImpl.class);
+    private static final Logger logger = LogManager.getLogger(TableMapperImpl.class);
     private JdbcTemplate template;
 
     @Override

tests/examples/JDBC/taosdemo/src/main/java/com/taosdata/taosdemo/service/SubTableService.java

@@ -8,7 +8,8 @@ import com.taosdata.taosdemo.domain.SubTableValue;
 import com.taosdata.taosdemo.domain.SuperTableMeta;
 import com.taosdata.taosdemo.service.data.SubTableMetaGenerator;
 import com.taosdata.taosdemo.service.data.SubTableValueGenerator;
-import org.apache.log4j.Logger;
+import org.apache.logging.log4j.Logger;
+import org.apache.logging.log4j.LogManager;
 
 import javax.sql.DataSource;
 import java.util.ArrayList;
@@ -20,7 +21,7 @@ import java.util.stream.IntStream;
 public class SubTableService extends AbstractService {
 
     private SubTableMapper mapper;
-    private static final Logger logger = Logger.getLogger(SubTableService.class);
+    private static final Logger logger = LogManager.getLogger(SubTableService.class);
 
     public SubTableService(DataSource datasource) {
         this.mapper = new SubTableMapperImpl(datasource);

tests/script/general/parser/select_with_tags.sim

@@ -190,32 +190,32 @@ if $rows != 12800 then
   return -1
 endi
 
-sql select top(c1, 100), tbname, t1, t2 from select_tags_mt0;
-if $rows != 100 then
+sql select top(c1, 80), tbname, t1, t2 from select_tags_mt0;
+if $rows != 80 then
    return -1
 endi
 
-if $data00 != @70-01-01 08:03:30.100@ then
+if $data00 != @70-01-01 08:03:40.100@ then
    return -1
 endi
 
-if $data10 != @70-01-01 08:03:30.200@ then
+if $data10 != @70-01-01 08:03:40.200@ then
    return -1
 endi
 
-if $data01 != 110 then
+if $data01 != 111 then
    return -1
 endi
 
-if $data02 != @select_tags_tb11@ then
+if $data02 != @select_tags_tb12@ then
    return -1
 endi
 
-if $data03 != 11 then
+if $data03 != 12 then
    return -1
 endi
 
-if $data04 != @abc11@ then
+if $data04 != @abc12@ then
    return -1
 endi
 
@@ -248,8 +248,8 @@ if $data04 != @abc12@ then
    return -1
 endi
 
-sql select bottom(c1, 100), tbname, t1, t2 from select_tags_mt0;
-if $rows != 100 then
+sql select bottom(c1, 72), tbname, t1, t2 from select_tags_mt0;
+if $rows != 72 then
    return -1
 endi