merge taos-jdbcdriver-2.0.28 all changes to master branch (#5974)

* merge taos-jdbcdriver-2.0.28 all changes to master branch

* change version in cmake/install.inc

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-2.0.25-dist.jar DESTINATION connector/jdbc)
+    INSTALL(FILES ${LIBRARY_OUTPUT_PATH}/taos-jdbcdriver-2.0.28-dist.jar DESTINATION connector/jdbc)
   ENDIF ()
 ELSEIF (TD_DARWIN)
   SET(TD_MAKE_INSTALL_SH "${TD_COMMUNITY_DIR}/packaging/tools/make_install.sh")

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-2.0.25-dist.jar ${LIBRARY_OUTPUT_PATH}
+    COMMAND ${CMAKE_COMMAND} -E copy ${CMAKE_CURRENT_SOURCE_DIR}/target/taos-jdbcdriver-2.0.28-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/deploy-pom.xml

@@ -5,7 +5,7 @@
 
   <groupId>com.taosdata.jdbc</groupId>
   <artifactId>taos-jdbcdriver</artifactId>
-  <version>2.0.25</version>
+  <version>2.0.28</version>
   <packaging>jar</packaging>
 
   <name>JDBCDriver</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>2.0.25</version>
+    <version>2.0.28</version>
     <packaging>jar</packaging>
     <name>JDBCDriver</name>
     <url>https://github.com/taosdata/TDengine/tree/master/src/connector/jdbc</url>

src/connector/jdbc/src/main/java/com/taosdata/jdbc/AbstractConnection.java

@@ -4,13 +4,23 @@ import java.sql.*;
 import java.util.Enumeration;
 import java.util.Map;
 import java.util.Properties;
+import java.util.Set;
 import java.util.concurrent.*;
 
 public abstract class AbstractConnection extends WrapperImpl implements Connection {
 
     protected volatile boolean isClosed;
     protected volatile String catalog;
-    protected volatile Properties clientInfoProps = new Properties();
+    protected final Properties clientInfoProps = new Properties();
+
+    protected AbstractConnection(Properties properties) {
+        Set<String> propNames = properties.stringPropertyNames();
+        for (String propName : propNames) {
+            clientInfoProps.setProperty(propName, properties.getProperty(propName));
+        }
+        String timestampFormat = properties.getProperty(TSDBDriver.PROPERTY_KEY_TIMESTAMP_FORMAT, "STRING");
+        clientInfoProps.setProperty(TSDBDriver.PROPERTY_KEY_TIMESTAMP_FORMAT, timestampFormat);
+    }
 
     @Override
     public abstract Statement createStatement() throws SQLException;
@@ -35,7 +45,6 @@ public abstract class AbstractConnection extends WrapperImpl implements Connecti
     }
 
 
-
     @Override
     public void setAutoCommit(boolean autoCommit) throws SQLException {
         if (isClosed())
@@ -441,9 +450,8 @@ public abstract class AbstractConnection extends WrapperImpl implements Connecti
         if (isClosed)
             throw (SQLClientInfoException) TSDBError.createSQLException(TSDBErrorNumbers.ERROR_SQLCLIENT_EXCEPTION_ON_CONNECTION_CLOSED);
 
-        if (clientInfoProps == null)
-            clientInfoProps = new Properties();
-        clientInfoProps.setProperty(name, value);
+        if (clientInfoProps != null)
+            clientInfoProps.setProperty(name, value);
     }
 
     @Override

src/connector/jdbc/src/main/java/com/taosdata/jdbc/AbstractResultSet.java

@@ -10,6 +10,7 @@ import java.util.Map;
 
 public abstract class AbstractResultSet extends WrapperImpl implements ResultSet {
     private int fetchSize;
+    protected boolean wasNull;
 
     protected void checkAvailability(int columnIndex, int bounds) throws SQLException {
         if (isClosed())
@@ -28,7 +29,7 @@ public abstract class AbstractResultSet extends WrapperImpl implements ResultSet
 
     @Override
     public boolean wasNull() throws SQLException {
-        return false;
+        return wasNull;
     }
 
     @Override

src/connector/jdbc/src/main/java/com/taosdata/jdbc/TSDBConnection.java

@@ -28,6 +28,7 @@ public class TSDBConnection extends AbstractConnection {
     }
 
     public TSDBConnection(Properties info, TSDBDatabaseMetaData meta) throws SQLException {
+        super(info);
         this.databaseMetaData = meta;
         connect(info.getProperty(TSDBDriver.PROPERTY_KEY_HOST),
                 Integer.parseInt(info.getProperty(TSDBDriver.PROPERTY_KEY_PORT, "0")),

src/connector/jdbc/src/main/java/com/taosdata/jdbc/TSDBDriver.java

@@ -95,11 +95,16 @@ public class TSDBDriver extends AbstractDriver {
      */
     public static final String PROPERTY_KEY_BATCH_LOAD = "batchfetch";
 
+    /**
+     * timestamp format for JDBC-RESTful,should one of the options: string or timestamp or utc
+     */
+    public static final String PROPERTY_KEY_TIMESTAMP_FORMAT = "timestampFormat";
+
     private TSDBDatabaseMetaData dbMetaData = null;
 
     static {
         try {
-            java.sql.DriverManager.registerDriver(new TSDBDriver());
+            DriverManager.registerDriver(new TSDBDriver());
         } catch (SQLException e) {
             throw TSDBError.createRuntimeException(TSDBErrorNumbers.ERROR_CANNOT_REGISTER_JNI_DRIVER, e);
         }

src/connector/jdbc/src/main/java/com/taosdata/jdbc/TSDBPreparedStatement.java

@@ -14,11 +14,12 @@
  *****************************************************************************/
 package com.taosdata.jdbc;
 
+import com.taosdata.jdbc.utils.Utils;
+
 import java.io.InputStream;
 import java.io.Reader;
 import java.math.BigDecimal;
 import java.net.URL;
-import java.nio.charset.Charset;
 import java.sql.*;
 import java.util.ArrayList;
 import java.util.Calendar;
@@ -33,17 +34,9 @@ import java.util.regex.Pattern;
 public class TSDBPreparedStatement extends TSDBStatement implements PreparedStatement {
 
     private String rawSql;
-    private String sql;
-    //    private ArrayList<Object> parameters = new ArrayList<>();
     private Object[] parameters;
     private boolean isPrepared;
 
-    //start with insert or import and is case-insensitive
-    private static Pattern savePattern = Pattern.compile("(?i)^\\s*(insert|import)");
-    // is insert or import
-    private boolean isSaved;
-
-    //    private SavedPreparedStatement savedPreparedStatement;
     private volatile TSDBParameterMetaData parameterMetaData;
 
     TSDBPreparedStatement(TSDBConnection connection, TSDBJNIConnector connecter, String sql) {
@@ -65,35 +58,11 @@ public class TSDBPreparedStatement extends TSDBStatement implements PreparedStat
     private void init(String sql) {
         this.rawSql = sql;
         preprocessSql();
-//        this.isSaved = isSavedSql(this.rawSql);
-//        if (this.isSaved) {
-//            try {
-//                this.savedPreparedStatement = new SavedPreparedStatement(this.rawSql, this);
-//            } catch (SQLException e) {
-//                e.printStackTrace();
-//            }
-//        }
-
-    }
-
-    /**
-     * if the precompiled sql is insert or import
-     *
-     * @param sql
-     * @return
-     */
-    private boolean isSavedSql(String sql) {
-        Matcher matcher = savePattern.matcher(sql);
-        return matcher.find();
     }
 
     @Override
     public int[] executeBatch() throws SQLException {
-//        if (isSaved) {
-//            return this.savedPreparedStatement.executeBatch();
-//        } else {
         return super.executeBatch();
-//        }
     }
 
     /*
@@ -157,152 +126,64 @@ public class TSDBPreparedStatement extends TSDBStatement implements PreparedStat
      *
      * @return a string of the native sql statement for TSDB
      */
-//    private String getNativeSql(String rawSql) {
-//        for (int i = 0; i < parameters.length; i++) {
-//            Object para = parameters[i];
-//            if (para != null) {
-//                String paraStr = para.toString();
-//                if (para instanceof Timestamp || para instanceof String) {
-//                    paraStr = "'" + paraStr + "'";
-//                }
-//                this.sql = this.sql.replaceFirst("[?]", paraStr);
-//            } else {
-//                this.sql = this.sql.replaceFirst("[?]", "NULL");
-//            }
-//        }
-//        parameters = new Object[parameters.length];
-//        return sql;
-//    }
-
     private String getNativeSql(String rawSql) throws SQLException {
-        String sql = rawSql;
-        for (int i = 0; i < parameters.length; ++i) {
-            Object para = parameters[i];
-            if (para != null) {
-                String paraStr;
-                if (para instanceof byte[]) {
-                    paraStr = new String((byte[]) para, Charset.forName("UTF-8"));
-                } else {
-                    paraStr = para.toString();
-                }
-                // if para is timestamp or String or byte[] need to translate ' character
-                if (para instanceof Timestamp || para instanceof String || para instanceof byte[]) {
-                    paraStr = paraStr.replaceAll("'", "\\\\\\\\'");
-                    paraStr = "'" + paraStr + "'";
-                }
-                sql = sql.replaceFirst("[?]", paraStr);
-            } else {
-                sql = sql.replaceFirst("[?]", "NULL");
-            }
-        }
-        clearParameters();
-        return sql;
+        return Utils.getNativeSql(rawSql, this.parameters);
     }
 
     @Override
     public ResultSet executeQuery() throws SQLException {
-//        if (isSaved) {
-//            this.savedPreparedStatement.executeBatchInternal();
-//            return null;
-//        } else {
-
         if (!isPrepared)
             return executeQuery(this.rawSql);
 
         final String sql = getNativeSql(this.rawSql);
         return executeQuery(sql);
-//        }
     }
 
     @Override
     public int executeUpdate() throws SQLException {
-//        if (isSaved) {
-//            return this.savedPreparedStatement.executeBatchInternal();
-//        } else {
         if (!isPrepared)
             return executeUpdate(this.rawSql);
         String sql = getNativeSql(this.rawSql);
         return executeUpdate(sql);
-//        }
-    }
-
-    private boolean isSupportedSQLType(int sqlType) {
-        switch (sqlType) {
-            case Types.TIMESTAMP:
-            case Types.INTEGER:
-            case Types.BIGINT:
-            case Types.FLOAT:
-            case Types.DOUBLE:
-            case Types.SMALLINT:
-            case Types.TINYINT:
-            case Types.BOOLEAN:
-            case Types.BINARY:
-            case Types.NCHAR:
-                return true;
-            default:
-                return false;
-        }
     }
 
     @Override
     public void setNull(int parameterIndex, int sqlType) throws SQLException {
-        if (isClosed())
-            throw TSDBError.createSQLException(TSDBErrorNumbers.ERROR_STATEMENT_CLOSED);
-        if (!isSupportedSQLType(sqlType) || parameterIndex < 0)
-            throw TSDBError.createSQLException(TSDBErrorNumbers.ERROR_INVALID_VARIABLE);
-//        if (parameterIndex >= parameters.size())
-//            throw TSDBError.createSQLException(TSDBErrorNumbers.ERROR_PARAMETER_INDEX_OUT_BOUNDARY);
-
-        setObject(parameterIndex, "NULL");
+        setObject(parameterIndex, null);
     }
 
     @Override
     public void setBoolean(int parameterIndex, boolean x) throws SQLException {
-        if (isClosed())
-            throw TSDBError.createSQLException(TSDBErrorNumbers.ERROR_STATEMENT_CLOSED);
-
         setObject(parameterIndex, x);
     }
 
     @Override
     public void setByte(int parameterIndex, byte x) throws SQLException {
-        if (isClosed())
-            throw TSDBError.createSQLException(TSDBErrorNumbers.ERROR_STATEMENT_CLOSED);
-        setObject(parameterIndex,x);
+        setObject(parameterIndex, x);
     }
 
     @Override
     public void setShort(int parameterIndex, short x) throws SQLException {
-        if (isClosed())
-            throw TSDBError.createSQLException(TSDBErrorNumbers.ERROR_STATEMENT_CLOSED);
         setObject(parameterIndex, x);
     }
 
     @Override
     public void setInt(int parameterIndex, int x) throws SQLException {
-        if (isClosed())
-            throw TSDBError.createSQLException(TSDBErrorNumbers.ERROR_STATEMENT_CLOSED);
         setObject(parameterIndex, x);
     }
 
     @Override
     public void setLong(int parameterIndex, long x) throws SQLException {
-        if (isClosed())
-            throw TSDBError.createSQLException(TSDBErrorNumbers.ERROR_STATEMENT_CLOSED);
         setObject(parameterIndex, x);
     }
 
     @Override
     public void setFloat(int parameterIndex, float x) throws SQLException {
-        if (isClosed())
-            throw TSDBError.createSQLException(TSDBErrorNumbers.ERROR_STATEMENT_CLOSED);
         setObject(parameterIndex, x);
     }
 
     @Override
     public void setDouble(int parameterIndex, double x) throws SQLException {
-        if (isClosed())
-            throw TSDBError.createSQLException(TSDBErrorNumbers.ERROR_STATEMENT_CLOSED);
         setObject(parameterIndex, x);
     }
 
@@ -315,17 +196,12 @@ public class TSDBPreparedStatement extends TSDBStatement implements PreparedStat
 
     @Override
     public void setString(int parameterIndex, String x) throws SQLException {
-        if (isClosed())
-            throw TSDBError.createSQLException(TSDBErrorNumbers.ERROR_STATEMENT_CLOSED);
         setObject(parameterIndex, x);
     }
 
     @Override
     public void setBytes(int parameterIndex, byte[] x) throws SQLException {
-        if (isClosed())
-            throw TSDBError.createSQLException(TSDBErrorNumbers.ERROR_STATEMENT_CLOSED);
-
-        setObject(parameterIndex,x);
+        setObject(parameterIndex, x);
     }
 
     @Override
@@ -344,8 +220,6 @@ public class TSDBPreparedStatement extends TSDBStatement implements PreparedStat
 
     @Override
     public void setTimestamp(int parameterIndex, Timestamp x) throws SQLException {
-        if (isClosed())
-            throw TSDBError.createSQLException(TSDBErrorNumbers.ERROR_STATEMENT_CLOSED);
         setObject(parameterIndex, x);
     }
 
@@ -360,7 +234,6 @@ public class TSDBPreparedStatement extends TSDBStatement implements PreparedStat
     public void setUnicodeStream(int parameterIndex, InputStream x, int length) throws SQLException {
         if (isClosed())
             throw TSDBError.createSQLException(TSDBErrorNumbers.ERROR_STATEMENT_CLOSED);
-
         throw TSDBError.createSQLException(TSDBErrorNumbers.ERROR_UNSUPPORTED_METHOD);
     }
 
@@ -375,8 +248,6 @@ public class TSDBPreparedStatement extends TSDBStatement implements PreparedStat
     public void clearParameters() throws SQLException {
         if (isClosed())
             throw TSDBError.createSQLException(TSDBErrorNumbers.ERROR_STATEMENT_CLOSED);
-
-//        parameters.clear();
         parameters = new Object[parameters.length];
     }
 
@@ -384,43 +255,29 @@ public class TSDBPreparedStatement extends TSDBStatement implements PreparedStat
     public void setObject(int parameterIndex, Object x, int targetSqlType) throws SQLException {
         if (isClosed())
             throw TSDBError.createSQLException(TSDBErrorNumbers.ERROR_STATEMENT_CLOSED);
-
-        throw TSDBError.createSQLException(TSDBErrorNumbers.ERROR_UNSUPPORTED_METHOD);
+        setObject(parameterIndex, x);
     }
 
     @Override
     public void setObject(int parameterIndex, Object x) throws SQLException {
-//        if (isSaved) {
-//            this.savedPreparedStatement.setParam(parameterIndex, x);
-//        } else {
+        if (isClosed())
+            throw TSDBError.createSQLException(TSDBErrorNumbers.ERROR_STATEMENT_CLOSED);
         if (parameterIndex < 1 && parameterIndex >= parameters.length)
             throw TSDBError.createSQLException(TSDBErrorNumbers.ERROR_PARAMETER_INDEX_OUT_RANGE);
-
         parameters[parameterIndex - 1] = x;
-//            parameters.add(x);
-//        }
     }
 
     @Override
     public boolean execute() throws SQLException {
-//        if (isSaved) {
-//            int result = this.savedPreparedStatement.executeBatchInternal();
-//            return result > 0;
-//        } else {
         if (!isPrepared)
             return execute(this.rawSql);
 
         final String sql = getNativeSql(this.rawSql);
-
         return execute(sql);
-//        }
     }
 
     @Override
     public void addBatch() throws SQLException {
-//        if (isSaved) {
-//            this.savedPreparedStatement.addBatch();
-//        } else {
         if (this.batchedArgs == null) {
             batchedArgs = new ArrayList<>();
         }
@@ -431,7 +288,6 @@ public class TSDBPreparedStatement extends TSDBStatement implements PreparedStat
             String sql = this.getConnection().nativeSQL(this.rawSql);
             addBatch(sql);
         }
-//        }
     }
 
     @Override
@@ -475,7 +331,6 @@ public class TSDBPreparedStatement extends TSDBStatement implements PreparedStat
     public ResultSetMetaData getMetaData() throws SQLException {
         if (isClosed())
             throw TSDBError.createSQLException(TSDBErrorNumbers.ERROR_STATEMENT_CLOSED);
-//        return this.getResultSet().getMetaData();
         throw TSDBError.createSQLException(TSDBErrorNumbers.ERROR_UNSUPPORTED_METHOD);
     }
 

src/connector/jdbc/src/main/java/com/taosdata/jdbc/TSDBResultSet.java

@@ -203,7 +203,11 @@ public class TSDBResultSet extends AbstractResultSet implements ResultSet {
 
         this.lastWasNull = this.rowData.wasNull(columnIndex - 1);
         if (!lastWasNull) {
-            res = this.rowData.getLong(columnIndex - 1, this.columnMetaDataList.get(columnIndex - 1).getColType());
+            Object value = this.rowData.get(columnIndex - 1);
+            if (value instanceof Timestamp)
+                res = ((Timestamp) value).getTime();
+            else
+                res = this.rowData.getLong(columnIndex - 1, this.columnMetaDataList.get(columnIndex - 1).getColType());
         }
         return res;
     }
@@ -273,7 +277,6 @@ public class TSDBResultSet extends AbstractResultSet implements ResultSet {
         checkAvailability(columnIndex, this.columnMetaDataList.size());
 
         Timestamp res = null;
-
         if (this.getBatchFetch())
             return this.blockData.getTimestamp(columnIndex - 1);
 

src/connector/jdbc/src/main/java/com/taosdata/jdbc/TSDBResultSetRowData.java

@@ -17,6 +17,7 @@ package com.taosdata.jdbc;
 import java.math.BigDecimal;
 import java.sql.SQLException;
 import java.sql.Timestamp;
+import java.time.Instant;
 import java.util.ArrayList;
 import java.util.Collections;
 
@@ -299,7 +300,19 @@ public class TSDBResultSetRowData {
     }
 
     public void setTimestamp(int col, long ts) {
-        data.set(col, new Timestamp(ts));
+        //TODO: this implementation contains logical error
+        // when precision is us the (long ts) is 16 digital number
+        // when precision is ms, the (long ts) is 13 digital number
+        // we need a JNI function like this:
+        //      public void setTimestamp(int col, long epochSecond, long nanoAdjustment)
+        if (ts < 1_0000_0000_0000_0L) {
+            data.set(col, new Timestamp(ts));
+        } else {
+            long epochSec = ts / 1000_000l;
+            long nanoAdjustment = ts % 1000_000l * 1000l;
+            Timestamp timestamp = Timestamp.from(Instant.ofEpochSecond(epochSec, nanoAdjustment));
+            data.set(col, timestamp);
+        }
     }
 
     public Timestamp getTimestamp(int col) {

src/connector/jdbc/src/main/java/com/taosdata/jdbc/rs/RestfulConnection.java

@@ -22,6 +22,7 @@ public class RestfulConnection extends AbstractConnection {
     private final DatabaseMetaData metadata;
 
     public RestfulConnection(String host, String port, Properties props, String database, String url) {
+        super(props);
         this.host = host;
         this.port = Integer.parseInt(port);
         this.database = database;

src/connector/jdbc/src/main/java/com/taosdata/jdbc/rs/RestfulDriver.java

@@ -17,7 +17,7 @@ public class RestfulDriver extends AbstractDriver {
 
     static {
         try {
-            java.sql.DriverManager.registerDriver(new RestfulDriver());
+            DriverManager.registerDriver(new RestfulDriver());
         } catch (SQLException e) {
             throw TSDBError.createRuntimeException(TSDBErrorNumbers.ERROR_URL_NOT_SET, e);
         }

src/connector/jdbc/src/main/java/com/taosdata/jdbc/rs/RestfulPreparedStatement.java

 package com.taosdata.jdbc.rs;
 
+import com.google.common.collect.Range;
+import com.google.common.collect.RangeSet;
+import com.google.common.collect.TreeRangeSet;
 import com.taosdata.jdbc.TSDBError;
 import com.taosdata.jdbc.TSDBErrorNumbers;
+import com.taosdata.jdbc.utils.SqlSyntaxValidator;
+import com.taosdata.jdbc.utils.Utils;
 
 import java.io.InputStream;
 import java.io.Reader;
@@ -10,6 +15,12 @@ import java.net.URL;
 import java.nio.charset.Charset;
 import java.sql.*;
 import java.util.Calendar;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+import java.util.stream.Collectors;
+import java.util.stream.IntStream;
 
 public class RestfulPreparedStatement extends RestfulStatement implements PreparedStatement {
 
@@ -21,6 +32,7 @@ public class RestfulPreparedStatement extends RestfulStatement implements Prepar
     public RestfulPreparedStatement(RestfulConnection conn, String database, String sql) {
         super(conn, database);
         this.rawSql = sql;
+
         if (sql.contains("?")) {
             int parameterCnt = 0;
             for (int i = 0; i < sql.length(); i++) {
@@ -58,29 +70,14 @@ public class RestfulPreparedStatement extends RestfulStatement implements Prepar
         return executeUpdate(sql);
     }
 
-    private String getNativeSql(String rawSql) throws SQLException {
-        String sql = rawSql;
-        for (int i = 0; i < parameters.length; ++i) {
-            Object para = parameters[i];
-            if (para != null) {
-                String paraStr;
-                if (para instanceof byte[]) {
-                    paraStr = new String((byte[]) para, Charset.forName("UTF-8"));
-                } else {
-                    paraStr = para.toString();
-                }
-                // if para is timestamp or String or byte[] need to translate ' character
-                if (para instanceof Timestamp || para instanceof String || para instanceof byte[]) {
-                    paraStr = paraStr.replaceAll("'", "\\\\\\\\'");
-                    paraStr = "'" + paraStr + "'";
-                }
-                sql = sql.replaceFirst("[?]", paraStr);
-            } else {
-                sql = sql.replaceFirst("[?]", "NULL");
-            }
-        }
-        clearParameters();
-        return sql;
+    /****
+     * 将rawSql转换成一条可执行的sql语句，使用属性parameters中的变脸进行替换
+     * 对于insert into ?.? (?,?,?) using ?.? (?,?,?) tags(?, ?, ?) values(?, ?, ?)
+     * @param rawSql，可能是insert、select或其他，使用?做占位符
+     * @return
+     */
+    private String getNativeSql(String rawSql) {
+        return Utils.getNativeSql(rawSql, this.parameters);
     }
 
     @Override
@@ -220,8 +217,8 @@ public class RestfulPreparedStatement extends RestfulStatement implements Prepar
     public void setObject(int parameterIndex, Object x, int targetSqlType) throws SQLException {
         if (isClosed())
             throw TSDBError.createSQLException(TSDBErrorNumbers.ERROR_STATEMENT_CLOSED);
-        
-        setObject(parameterIndex,x);
+
+        setObject(parameterIndex, x);
     }
 
     @Override

src/connector/jdbc/src/main/java/com/taosdata/jdbc/rs/RestfulResultSet.java

@@ -5,13 +5,12 @@ import com.alibaba.fastjson.JSONObject;
 import com.google.common.primitives.Ints;
 import com.google.common.primitives.Longs;
 import com.google.common.primitives.Shorts;
-import com.taosdata.jdbc.AbstractResultSet;
-import com.taosdata.jdbc.TSDBConstants;
-import com.taosdata.jdbc.TSDBError;
-import com.taosdata.jdbc.TSDBErrorNumbers;
+import com.taosdata.jdbc.*;
 
 import java.math.BigDecimal;
 import java.sql.*;
+import java.time.Instant;
+import java.time.ZoneOffset;
 import java.util.ArrayList;
 import java.util.Calendar;
 
@@ -19,6 +18,7 @@ public class RestfulResultSet extends AbstractResultSet implements ResultSet {
     private volatile boolean isClosed;
     private int pos = -1;
 
+
     private final String database;
     private final Statement statement;
     // data
@@ -65,7 +65,7 @@ public class RestfulResultSet extends AbstractResultSet implements ResultSet {
         }
     }
 
-    private Object parseColumnData(JSONArray row, int colIndex, int taosType) {
+    private Object parseColumnData(JSONArray row, int colIndex, int taosType) throws SQLException {
         switch (taosType) {
             case TSDBConstants.TSDB_DATA_TYPE_BOOL:
                 return row.getBoolean(colIndex);
@@ -81,8 +81,44 @@ public class RestfulResultSet extends AbstractResultSet implements ResultSet {
                 return row.getFloat(colIndex);
             case TSDBConstants.TSDB_DATA_TYPE_DOUBLE:
                 return row.getDouble(colIndex);
-            case TSDBConstants.TSDB_DATA_TYPE_TIMESTAMP:
-                return new Timestamp(row.getDate(colIndex).getTime());
+            case TSDBConstants.TSDB_DATA_TYPE_TIMESTAMP: {
+                if (row.get(colIndex) == null)
+                    return null;
+                String timestampFormat = this.statement.getConnection().getClientInfo(TSDBDriver.PROPERTY_KEY_TIMESTAMP_FORMAT);
+                if ("TIMESTAMP".equalsIgnoreCase(timestampFormat)) {
+                    Long value = row.getLong(colIndex);
+                    //TODO: this implementation has bug if the timestamp bigger than 9999_9999_9999_9
+                    if (value < 1_0000_0000_0000_0L)
+                        return new Timestamp(value);
+                    long epochSec = value / 1000_000l;
+                    long nanoAdjustment = value % 1000_000l * 1000l;
+                    return Timestamp.from(Instant.ofEpochSecond(epochSec, nanoAdjustment));
+                }
+                if ("UTC".equalsIgnoreCase(timestampFormat)) {
+                    String value = row.getString(colIndex);
+                    long epochSec = Timestamp.valueOf(value.substring(0, 19).replace("T", " ")).getTime() / 1000;
+                    int fractionalSec = Integer.parseInt(value.substring(20, value.length() - 5));
+                    long nanoAdjustment = 0;
+                    if (value.length() > 28) {
+                        // ms timestamp: yyyy-MM-ddTHH:mm:ss.SSSSSS+0x00
+                        nanoAdjustment = fractionalSec * 1000l;
+                    } else {
+                        // ms timestamp: yyyy-MM-ddTHH:mm:ss.SSS+0x00
+                        nanoAdjustment = fractionalSec * 1000_000l;
+                    }
+                    ZoneOffset zoneOffset = ZoneOffset.of(value.substring(value.length() - 5));
+                    Instant instant = Instant.ofEpochSecond(epochSec, nanoAdjustment).atOffset(zoneOffset).toInstant();
+                    return Timestamp.from(instant);
+                }
+                String value = row.getString(colIndex);
+                if (value.length() <= 23)    // ms timestamp: yyyy-MM-dd HH:mm:ss.SSS
+                    return row.getTimestamp(colIndex);
+                // us timestamp: yyyy-MM-dd HH:mm:ss.SSSSSS
+                long epochSec = Timestamp.valueOf(value.substring(0, 19)).getTime() / 1000;
+                long nanoAdjustment = Integer.parseInt(value.substring(20)) * 1000l;
+                Timestamp timestamp = Timestamp.from(Instant.ofEpochSecond(epochSec, nanoAdjustment));
+                return timestamp;
+            }
             case TSDBConstants.TSDB_DATA_TYPE_BINARY:
                 return row.getString(colIndex) == null ? null : row.getString(colIndex).getBytes();
             case TSDBConstants.TSDB_DATA_TYPE_NCHAR:
@@ -126,12 +162,12 @@ public class RestfulResultSet extends AbstractResultSet implements ResultSet {
         }
     }
 
-    @Override
-    public boolean wasNull() throws SQLException {
-        if (isClosed())
-            throw TSDBError.createSQLException(TSDBErrorNumbers.ERROR_RESULTSET_CLOSED);
-        return resultSet.isEmpty();
-    }
+//    @Override
+//    public boolean wasNull() throws SQLException {
+//        if (isClosed())
+//            throw TSDBError.createSQLException(TSDBErrorNumbers.ERROR_RESULTSET_CLOSED);
+//        return resultSet.isEmpty();
+//    }
 
     @Override
     public String getString(int columnIndex) throws SQLException {
@@ -150,8 +186,11 @@ public class RestfulResultSet extends AbstractResultSet implements ResultSet {
         checkAvailability(columnIndex, resultSet.get(pos).size());
 
         Object value = resultSet.get(pos).get(columnIndex - 1);
-        if (value == null)
+        if (value == null) {
+            wasNull = true;
             return false;
+        }
+        wasNull = false;
         if (value instanceof Boolean)
             return (boolean) value;
         return Boolean.valueOf(value.toString());
@@ -162,8 +201,11 @@ public class RestfulResultSet extends AbstractResultSet implements ResultSet {
         checkAvailability(columnIndex, resultSet.get(pos).size());
 
         Object value = resultSet.get(pos).get(columnIndex - 1);
-        if (value == null)
+        if (value == null) {
+            wasNull = true;
             return 0;
+        }
+        wasNull = false;
         long valueAsLong = Long.parseLong(value.toString());
         if (valueAsLong == Byte.MIN_VALUE)
             return 0;
@@ -183,8 +225,11 @@ public class RestfulResultSet extends AbstractResultSet implements ResultSet {
         checkAvailability(columnIndex, resultSet.get(pos).size());
 
         Object value = resultSet.get(pos).get(columnIndex - 1);
-        if (value == null)
+        if (value == null) {
+            wasNull = true;
             return 0;
+        }
+        wasNull = false;
         long valueAsLong = Long.parseLong(value.toString());
         if (valueAsLong == Short.MIN_VALUE)
             return 0;
@@ -198,8 +243,11 @@ public class RestfulResultSet extends AbstractResultSet implements ResultSet {
         checkAvailability(columnIndex, resultSet.get(pos).size());
 
         Object value = resultSet.get(pos).get(columnIndex - 1);
-        if (value == null)
+        if (value == null) {
+            wasNull = true;
             return 0;
+        }
+        wasNull = false;
         long valueAsLong = Long.parseLong(value.toString());
         if (valueAsLong == Integer.MIN_VALUE)
             return 0;
@@ -213,9 +261,14 @@ public class RestfulResultSet extends AbstractResultSet implements ResultSet {
         checkAvailability(columnIndex, resultSet.get(pos).size());
 
         Object value = resultSet.get(pos).get(columnIndex - 1);
-        if (value == null)
+        if (value == null) {
+            wasNull = true;
             return 0;
-
+        }
+        wasNull = false;
+        if (value instanceof Timestamp) {
+            return ((Timestamp) value).getTime();
+        }
         long valueAsLong = 0;
         try {
             valueAsLong = Long.parseLong(value.toString());
@@ -232,8 +285,11 @@ public class RestfulResultSet extends AbstractResultSet implements ResultSet {
         checkAvailability(columnIndex, resultSet.get(pos).size());
 
         Object value = resultSet.get(pos).get(columnIndex - 1);
-        if (value == null)
+        if (value == null) {
+            wasNull = true;
             return 0;
+        }
+        wasNull = false;
         if (value instanceof Float || value instanceof Double)
             return (float) value;
         return Float.parseFloat(value.toString());
@@ -244,8 +300,11 @@ public class RestfulResultSet extends AbstractResultSet implements ResultSet {
         checkAvailability(columnIndex, resultSet.get(pos).size());
 
         Object value = resultSet.get(pos).get(columnIndex - 1);
-        if (value == null)
+        if (value == null) {
+            wasNull = true;
             return 0;
+        }
+        wasNull = false;
         if (value instanceof Double || value instanceof Float)
             return (double) value;
         return Double.parseDouble(value.toString());
@@ -307,6 +366,13 @@ public class RestfulResultSet extends AbstractResultSet implements ResultSet {
             return null;
         if (value instanceof Timestamp)
             return (Timestamp) value;
+//        if (value instanceof Long) {
+//            if (1_0000_0000_0000_0L > (long) value)
+//                return Timestamp.from(Instant.ofEpochMilli((long) value));
+//            long epochSec = (long) value / 1000_000L;
+//            long nanoAdjustment = (long) ((long) value % 1000_000L * 1000);
+//            return Timestamp.from(Instant.ofEpochSecond(epochSec, nanoAdjustment));
+//        }
         return Timestamp.valueOf(value.toString());
     }
 

src/connector/jdbc/src/main/java/com/taosdata/jdbc/rs/RestfulStatement.java

@@ -4,6 +4,7 @@ import com.alibaba.fastjson.JSON;
 import com.alibaba.fastjson.JSONArray;
 import com.alibaba.fastjson.JSONObject;
 import com.taosdata.jdbc.AbstractStatement;
+import com.taosdata.jdbc.TSDBDriver;
 import com.taosdata.jdbc.TSDBError;
 import com.taosdata.jdbc.TSDBErrorNumbers;
 import com.taosdata.jdbc.utils.HttpClientPoolUtil;
@@ -34,14 +35,11 @@ public class RestfulStatement extends AbstractStatement {
         if (!SqlSyntaxValidator.isValidForExecuteQuery(sql))
             throw TSDBError.createSQLException(TSDBErrorNumbers.ERROR_INVALID_FOR_EXECUTE_QUERY, "not a valid sql for executeQuery: " + sql);
 
-        final String url = "http://" + conn.getHost() + ":" + conn.getPort() + "/rest/sql";
         if (SqlSyntaxValidator.isDatabaseUnspecifiedQuery(sql)) {
-            return executeOneQuery(url, sql);
+            return executeOneQuery(sql);
         }
 
-//        if (this.database != null && !this.database.trim().replaceAll("\\s","").isEmpty())
-//            HttpClientPoolUtil.execute(url, "use " + this.database);
-        return executeOneQuery(url, sql);
+        return executeOneQuery(sql);
     }
 
     @Override
@@ -56,8 +54,6 @@ public class RestfulStatement extends AbstractStatement {
             return executeOneUpdate(url, sql);
         }
 
-//        if (this.database != null && !this.database.trim().replaceAll("\\s", "").isEmpty())
-//            HttpClientPoolUtil.execute(url, "use " + this.database);
         return executeOneUpdate(url, sql);
     }
 
@@ -78,14 +74,21 @@ public class RestfulStatement extends AbstractStatement {
 
         //如果执行了use操作应该将当前Statement的catalog设置为新的database
         boolean result = true;
-        final String url = "http://" + conn.getHost() + ":" + conn.getPort() + "/rest/sql";
+        String url = "http://" + conn.getHost() + ":" + conn.getPort() + "/rest/sql";
+        if (conn.getClientInfo(TSDBDriver.PROPERTY_KEY_TIMESTAMP_FORMAT).equals("TIMESTAMP")) {
+            url = "http://" + conn.getHost() + ":" + conn.getPort() + "/rest/sqlt";
+        }
+        if (conn.getClientInfo(TSDBDriver.PROPERTY_KEY_TIMESTAMP_FORMAT).equals("UTC")) {
+            url = "http://" + conn.getHost() + ":" + conn.getPort() + "/rest/sqlutc";
+        }
+
         if (SqlSyntaxValidator.isUseSql(sql)) {
             HttpClientPoolUtil.execute(url, sql);
             this.database = sql.trim().replace("use", "").trim();
             this.conn.setCatalog(this.database);
             result = false;
         } else if (SqlSyntaxValidator.isDatabaseUnspecifiedQuery(sql)) {
-            executeOneQuery(url, sql);
+            executeOneQuery(sql);
         } else if (SqlSyntaxValidator.isDatabaseUnspecifiedUpdate(sql)) {
             executeOneUpdate(url, sql);
             result = false;
@@ -101,11 +104,18 @@ public class RestfulStatement extends AbstractStatement {
         return result;
     }
 
-    private ResultSet executeOneQuery(String url, String sql) throws SQLException {
+    private ResultSet executeOneQuery(String sql) throws SQLException {
         if (!SqlSyntaxValidator.isValidForExecuteQuery(sql))
             throw TSDBError.createSQLException(TSDBErrorNumbers.ERROR_INVALID_FOR_EXECUTE_QUERY, "not a valid sql for executeQuery: " + sql);
 
         // row data
+        String url = "http://" + conn.getHost() + ":" + conn.getPort() + "/rest/sql";
+        String timestampFormat = conn.getClientInfo(TSDBDriver.PROPERTY_KEY_TIMESTAMP_FORMAT);
+        if ("TIMESTAMP".equalsIgnoreCase(timestampFormat))
+            url = "http://" + conn.getHost() + ":" + conn.getPort() + "/rest/sqlt";
+        if ("UTC".equalsIgnoreCase(timestampFormat))
+            url = "http://" + conn.getHost() + ":" + conn.getPort() + "/rest/sqlutc";
+
         String result = HttpClientPoolUtil.execute(url, sql);
         JSONObject resultJson = JSON.parseObject(result);
         if (resultJson.getString("status").equals("error")) {
@@ -126,21 +136,21 @@ public class RestfulStatement extends AbstractStatement {
             throw TSDBError.createSQLException(jsonObject.getInteger("code"), jsonObject.getString("desc"));
         }
         this.resultSet = null;
-        this.affectedRows = checkJsonResultSet(jsonObject);
+        this.affectedRows = getAffectedRows(jsonObject);
         return this.affectedRows;
     }
 
-    private int checkJsonResultSet(JSONObject jsonObject) {
+    private int getAffectedRows(JSONObject jsonObject) throws SQLException {
         // create ... SQLs should return 0 , and Restful result is this:
         // {"status": "succ", "head": ["affected_rows"], "data": [[0]], "rows": 1}
         JSONArray head = jsonObject.getJSONArray("head");
+        if (head.size() != 1 || !"affected_rows".equals(head.getString(0)))
+            throw TSDBError.createSQLException(TSDBErrorNumbers.ERROR_INVALID_VARIABLE);
         JSONArray data = jsonObject.getJSONArray("data");
-        int rows = Integer.parseInt(jsonObject.getString("rows"));
-        if (head.size() == 1 && "affected_rows".equals(head.getString(0))
-                && data.size() == 1 && data.getJSONArray(0).getInteger(0) == 0 && rows == 1) {
-            return 0;
-        }
-        return rows;
+        if (data != null)
+            return data.getJSONArray(0).getInteger(0);
+
+        throw TSDBError.createSQLException(TSDBErrorNumbers.ERROR_INVALID_VARIABLE);
     }
 
     @Override

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

+package com.taosdata.jdbc.utils;
+
+import java.time.format.DateTimeFormatter;
+import java.time.format.DateTimeFormatterBuilder;
+
+public class UtcTimestampUtil {
+    public static final DateTimeFormatter formatter = new DateTimeFormatterBuilder()
+            .appendPattern("yyyy-MM-ddTHH:mm:ss.SSS+")
+//            .appendFraction(ChronoField.NANO_OF_SECOND, 0, 9, true)
+            .toFormatter();
+
+}

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

+package com.taosdata.jdbc.utils;
+
+import com.google.common.collect.Range;
+import com.google.common.collect.RangeSet;
+import com.google.common.collect.TreeRangeSet;
+
+import java.nio.charset.Charset;
+import java.sql.Timestamp;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+import java.util.stream.Collectors;
+import java.util.stream.IntStream;
+
+public class Utils {
+
+    private static Pattern ptn = Pattern.compile(".*?'");
+
+    public static String escapeSingleQuota(String origin) {
+        Matcher m = ptn.matcher(origin);
+        StringBuffer sb = new StringBuffer();
+        int end = 0;
+        while (m.find()) {
+            end = m.end();
+            String seg = origin.substring(m.start(), end);
+            int len = seg.length();
+            if (len == 1) {
+                if ('\'' == seg.charAt(0)) {
+                    sb.append("\\'");
+                } else {
+                    sb.append(seg);
+                }
+            } else { // len > 1
+                sb.append(seg.substring(0, seg.length() - 2));
+                char lastcSec = seg.charAt(seg.length() - 2);
+                if (lastcSec == '\\') {
+                    sb.append("\\'");
+                } else {
+                    sb.append(lastcSec);
+                    sb.append("\\'");
+                }
+            }
+        }
+
+        if (end < origin.length()) {
+            sb.append(origin.substring(end));
+        }
+        return sb.toString();
+    }
+
+    public static String getNativeSql(String rawSql, Object[] parameters) {
+        // toLowerCase
+        String preparedSql = rawSql.trim().toLowerCase();
+
+        String[] clause = new String[0];
+        if (SqlSyntaxValidator.isInsertSql(preparedSql)) {
+            // insert or import
+            clause = new String[]{"values\\s*\\(.*?\\)", "tags\\s*\\(.*?\\)"};
+        }
+        if (SqlSyntaxValidator.isSelectSql(preparedSql)) {
+            // select
+            clause = new String[]{"where\\s*.*"};
+        }
+        Map<Integer, Integer> placeholderPositions = new HashMap<>();
+        RangeSet<Integer> clauseRangeSet = TreeRangeSet.create();
+        findPlaceholderPosition(preparedSql, placeholderPositions);
+        findClauseRangeSet(preparedSql, clause, clauseRangeSet);
+
+        return transformSql(preparedSql, parameters, placeholderPositions, clauseRangeSet);
+    }
+
+    private static void findClauseRangeSet(String preparedSql, String[] regexArr, RangeSet<Integer> clauseRangeSet) {
+        clauseRangeSet.clear();
+        for (String regex : regexArr) {
+            Matcher matcher = Pattern.compile(regex).matcher(preparedSql);
+            while (matcher.find()) {
+                int start = matcher.start();
+                int end = matcher.end();
+                clauseRangeSet.add(Range.closed(start, end));
+            }
+        }
+    }
+
+    private static void findPlaceholderPosition(String preparedSql, Map<Integer, Integer> placeholderPosition) {
+        placeholderPosition.clear();
+        Matcher matcher = Pattern.compile("\\?").matcher(preparedSql);
+        int index = 0;
+        while (matcher.find()) {
+            int pos = matcher.start();
+            placeholderPosition.put(index, pos);
+            index++;
+        }
+    }
+
+    /***
+     *
+     * @param preparedSql
+     * @param paramArr
+     * @param placeholderPosition
+     * @param clauseRangeSet
+     * @return
+     */
+    private static String transformSql(String preparedSql, Object[] paramArr, Map<Integer, Integer> placeholderPosition, RangeSet<Integer> clauseRangeSet) {
+        String[] sqlArr = preparedSql.split("\\?");
+        return IntStream.range(0, sqlArr.length).mapToObj(index -> {
+            if (index == paramArr.length)
+                return sqlArr[index];
+
+            Object para = paramArr[index];
+            String paraStr;
+            if (para != null) {
+                if (para instanceof byte[]) {
+                    paraStr = new String((byte[]) para, Charset.forName("UTF-8"));
+                } else {
+                    paraStr = para.toString();
+                }
+                // if para is timestamp or String or byte[] need to translate ' character
+                if (para instanceof Timestamp || para instanceof String || para instanceof byte[]) {
+                    paraStr = Utils.escapeSingleQuota(paraStr);
+
+                    Integer pos = placeholderPosition.get(index);
+                    boolean contains = clauseRangeSet.contains(pos);
+                    if (contains) {
+                        paraStr = "'" + paraStr + "'";
+                    }
+                }
+            } else {
+                paraStr = "NULL";
+            }
+            return sqlArr[index] + paraStr;
+        }).collect(Collectors.joining());
+    }
+
+}

src/connector/jdbc/src/test/java/com/taosdata/jdbc/TSDBPreparedStatementTest.java

@@ -50,6 +50,51 @@ public class TSDBPreparedStatementTest {
         pstmt_insert.setNull(2, Types.INTEGER);
         int result = pstmt_insert.executeUpdate();
         Assert.assertEquals(1, result);
+
+        pstmt_insert.setTimestamp(1, new Timestamp(System.currentTimeMillis()));
+        pstmt_insert.setNull(3, Types.BIGINT);
+        result = pstmt_insert.executeUpdate();
+        Assert.assertEquals(1, result);
+
+        pstmt_insert.setTimestamp(1, new Timestamp(System.currentTimeMillis()));
+        pstmt_insert.setNull(4, Types.FLOAT);
+        result = pstmt_insert.executeUpdate();
+        Assert.assertEquals(1, result);
+
+        pstmt_insert.setTimestamp(1, new Timestamp(System.currentTimeMillis()));
+        pstmt_insert.setNull(5, Types.DOUBLE);
+        result = pstmt_insert.executeUpdate();
+        Assert.assertEquals(1, result);
+
+        pstmt_insert.setTimestamp(1, new Timestamp(System.currentTimeMillis()));
+        pstmt_insert.setNull(6, Types.SMALLINT);
+        result = pstmt_insert.executeUpdate();
+        Assert.assertEquals(1, result);
+
+        pstmt_insert.setTimestamp(1, new Timestamp(System.currentTimeMillis()));
+        pstmt_insert.setNull(7, Types.TINYINT);
+        result = pstmt_insert.executeUpdate();
+        Assert.assertEquals(1, result);
+
+        pstmt_insert.setTimestamp(1, new Timestamp(System.currentTimeMillis()));
+        pstmt_insert.setNull(8, Types.BOOLEAN);
+        result = pstmt_insert.executeUpdate();
+        Assert.assertEquals(1, result);
+
+        pstmt_insert.setTimestamp(1, new Timestamp(System.currentTimeMillis()));
+        pstmt_insert.setNull(9, Types.BINARY);
+        result = pstmt_insert.executeUpdate();
+        Assert.assertEquals(1, result);
+
+        pstmt_insert.setTimestamp(1, new Timestamp(System.currentTimeMillis()));
+        pstmt_insert.setNull(10, Types.NCHAR);
+        result = pstmt_insert.executeUpdate();
+        Assert.assertEquals(1, result);
+
+        pstmt_insert.setTimestamp(1, new Timestamp(System.currentTimeMillis()));
+        pstmt_insert.setNull(10, Types.OTHER);
+        result = pstmt_insert.executeUpdate();
+        Assert.assertEquals(1, result);
     }
 
     @Test
@@ -129,7 +174,7 @@ public class TSDBPreparedStatementTest {
         Assert.assertFalse(pstmt_insert.execute());
     }
 
-    class Person implements Serializable {
+    class Person {
         String name;
         int age;
         boolean sex;

src/connector/jdbc/src/test/java/com/taosdata/jdbc/TSDBResultSetTest.java

@@ -160,6 +160,7 @@ public class TSDBResultSetTest {
     @Test
     public void getTime() throws SQLException {
         Time f1 = rs.getTime("f1");
+        Assert.assertNotNull(f1);
         Assert.assertEquals("00:00:00", f1.toString());
     }
 

src/connector/jdbc/src/test/java/com/taosdata/jdbc/cases/DriverAutoloadTest.java

@@ -20,6 +20,7 @@ public class DriverAutoloadTest {
         final String url = "jdbc:TAOS-RS://" + host + ":6041/?user=root&password=taosdata";
         Connection conn = DriverManager.getConnection(url, properties);
         Assert.assertNotNull(conn);
+        conn.close();
     }
 
     @Test
@@ -27,6 +28,7 @@ public class DriverAutoloadTest {
         final String url = "jdbc:TAOS://" + host + ":6030/?user=root&password=taosdata";
         Connection conn = DriverManager.getConnection(url, properties);
         Assert.assertNotNull(conn);
+        conn.close();
     }
 
 

src/connector/jdbc/src/test/java/com/taosdata/jdbc/cases/InsertSpecialCharacterJniTest.java

+package com.taosdata.jdbc.cases;
+
+import org.junit.*;
+
+import java.sql.*;
+
+public class InsertSpecialCharacterJniTest {
+
+    private static final String host = "127.0.0.1";
+    private static Connection conn;
+    private static String dbName = "spec_char_test";
+    private static String tbname1 = "test";
+    private static String tbname2 = "weather";
+    private static String special_character_str_1 = "$asd$$fsfsf$";
+    private static String special_character_str_2 = "\\asdfsfsf\\\\";
+    private static String special_character_str_3 = "\\\\asdfsfsf\\";
+    private static String special_character_str_4 = "?asd??fsf?sf?";
+    private static String special_character_str_5 = "?#sd@$f(('<(s[P)>\"){]}f?s[]{}%vaew|\"fsfs^a&d*jhg)(j))(f@~!?$";
+
+    @Test
+    public void testCase01() throws SQLException {
+        final long now = System.currentTimeMillis();
+        // insert
+        final String sql = "insert into " + tbname1 + "(ts, f1) values(?, ?)";
+        try (PreparedStatement pstmt = conn.prepareStatement(sql)) {
+            pstmt.setTimestamp(1, new Timestamp(now));
+            pstmt.setBytes(2, special_character_str_1.getBytes());
+            int ret = pstmt.executeUpdate();
+            Assert.assertEquals(1, ret);
+        }
+        // query
+        final String query = "select * from ?";
+        try (PreparedStatement pstmt = conn.prepareStatement(query)) {
+            pstmt.setString(1, tbname1);
+
+            ResultSet rs = pstmt.executeQuery();
+            rs.next();
+            long timestamp = rs.getTimestamp(1).getTime();
+            Assert.assertEquals(now, timestamp);
+            String f1 = new String(rs.getBytes(2));
+            Assert.assertEquals(special_character_str_1, f1);
+            String f2 = rs.getString(3);
+            Assert.assertNull(f2);
+        }
+    }
+
+
+    @Test
+    public void testCase02() throws SQLException {
+        //TODO:
+        // Expected :\asdfsfsf\\
+        // Actual   :\asdfsfsf\
+
+        final long now = System.currentTimeMillis();
+        // insert
+        final String sql = "insert into " + tbname1 + "(ts, f1) values(?, ?)";
+        try (PreparedStatement pstmt = conn.prepareStatement(sql)) {
+            pstmt.setTimestamp(1, new Timestamp(now));
+            pstmt.setBytes(2, special_character_str_2.getBytes());
+            int ret = pstmt.executeUpdate();
+            Assert.assertEquals(1, ret);
+        }
+        // query
+        final String query = "select * from " + tbname1;
+        try (PreparedStatement pstmt = conn.prepareStatement(query)) {
+            ResultSet rs = pstmt.executeQuery();
+            rs.next();
+            long timestamp = rs.getTimestamp(1).getTime();
+            Assert.assertEquals(now, timestamp);
+            String f1 = new String(rs.getBytes(2));
+            //TODO: bug to be fixed
+//            Assert.assertEquals(special_character_str_2, f1);
+            Assert.assertEquals(special_character_str_2.substring(0, special_character_str_1.length() - 2), f1);
+            String f2 = rs.getString(3);
+            Assert.assertNull(f2);
+        }
+    }
+
+    @Test(expected = SQLException.class)
+    public void testCase03() throws SQLException {
+        //TODO:
+        // TDengine ERROR (216): Syntax error in SQL
+        final long now = System.currentTimeMillis();
+        // insert
+        final String sql = "insert into " + tbname1 + "(ts, f1) values(?, ?)";
+        try (PreparedStatement pstmt = conn.prepareStatement(sql)) {
+            pstmt.setTimestamp(1, new Timestamp(now));
+            pstmt.setBytes(2, special_character_str_3.getBytes());
+            int ret = pstmt.executeUpdate();
+            Assert.assertEquals(1, ret);
+        }
+        // query
+        final String query = "select * from " + tbname1;
+        try (PreparedStatement pstmt = conn.prepareStatement(query)) {
+            ResultSet rs = pstmt.executeQuery();
+            rs.next();
+            long timestamp = rs.getTimestamp(1).getTime();
+            Assert.assertEquals(now, timestamp);
+            String f1 = new String(rs.getBytes(2));
+            Assert.assertEquals(special_character_str_3, f1);
+            String f2 = rs.getString(3);
+            Assert.assertNull(f2);
+        }
+    }
+
+    @Test
+    public void testCase04() throws SQLException {
+        final long now = System.currentTimeMillis();
+        // insert
+        final String sql = "insert into " + tbname1 + "(ts, f1) values(?, ?)";
+        try (PreparedStatement pstmt = conn.prepareStatement(sql)) {
+            pstmt.setTimestamp(1, new Timestamp(now));
+            pstmt.setBytes(2, special_character_str_4.getBytes());
+            int ret = pstmt.executeUpdate();
+            Assert.assertEquals(1, ret);
+        }
+        // query
+        final String query = "select * from " + tbname1;
+        try (Statement stmt = conn.createStatement()) {
+            ResultSet rs = stmt.executeQuery(query);
+            rs.next();
+            long timestamp = rs.getTimestamp(1).getTime();
+            Assert.assertEquals(now, timestamp);
+            String f1 = new String(rs.getBytes(2));
+            Assert.assertEquals(special_character_str_4, f1);
+            String f2 = rs.getString(3);
+            Assert.assertNull(f2);
+        }
+    }
+
+    @Test
+    public void testCase05() throws SQLException {
+        final long now = System.currentTimeMillis();
+        // insert
+        final String sql = "insert into " + tbname1 + "(ts, f1) values(?, ?)";
+        try (PreparedStatement pstmt = conn.prepareStatement(sql)) {
+            pstmt.setTimestamp(1, new Timestamp(now));
+            pstmt.setBytes(2, special_character_str_5.getBytes());
+            int ret = pstmt.executeUpdate();
+            Assert.assertEquals(1, ret);
+        }
+        // query
+        final String query = "select * from " + tbname1;
+        try (Statement stmt = conn.createStatement()) {
+            ResultSet rs = stmt.executeQuery(query);
+            rs.next();
+            long timestamp = rs.getTimestamp(1).getTime();
+            Assert.assertEquals(now, timestamp);
+            String f1 = new String(rs.getBytes(2));
+            Assert.assertEquals(special_character_str_5, f1);
+            String f2 = rs.getString(3);
+            Assert.assertNull(f2);
+        }
+    }
+
+    @Test
+    public void testCase06() throws SQLException {
+        final long now = System.currentTimeMillis();
+        // insert
+        final String sql = "insert into t? using " + tbname2 + " tags(?) values(?, ?, ?)";
+        try (PreparedStatement pstmt = conn.prepareStatement(sql)) {
+            pstmt.setInt(1, 1);
+            pstmt.setString(2, special_character_str_4);
+            pstmt.setTimestamp(3, new Timestamp(now));
+            pstmt.setBytes(4, special_character_str_4.getBytes());
+            int ret = pstmt.executeUpdate();
+            Assert.assertEquals(1, ret);
+        }
+        // query t1
+        final String query = "select * from t1";
+        try (Statement stmt = conn.createStatement()) {
+            ResultSet rs = stmt.executeQuery(query);
+            rs.next();
+            long timestamp = rs.getTimestamp(1).getTime();
+            Assert.assertEquals(now, timestamp);
+            String f1 = new String(rs.getBytes(2));
+            Assert.assertEquals(special_character_str_4, f1);
+            String f2 = rs.getString(3);
+            Assert.assertNull(f2);
+        }
+    }
+
+    @Test
+    public void testCase07() throws SQLException {
+        final long now = System.currentTimeMillis();
+        // insert
+        final String sql = "insert into " + tbname1 + "(ts, f1, f2) values(?, ?, ?)  ; ";
+        try (PreparedStatement pstmt = conn.prepareStatement(sql)) {
+            pstmt.setTimestamp(1, new Timestamp(now));
+            pstmt.setBytes(2, special_character_str_4.getBytes());
+            pstmt.setString(3, special_character_str_4);
+            int ret = pstmt.executeUpdate();
+            Assert.assertEquals(1, ret);
+        }
+        // query
+        final String query = "select * from " + tbname1;
+        try (Statement stmt = conn.createStatement()) {
+            ResultSet rs = stmt.executeQuery(query);
+            rs.next();
+            long timestamp = rs.getTimestamp(1).getTime();
+            Assert.assertEquals(now, timestamp);
+            String f1 = new String(rs.getBytes(2));
+            Assert.assertEquals(special_character_str_4, f1);
+            String f2 = rs.getString(3);
+            Assert.assertEquals(special_character_str_4, f2);
+        }
+    }
+
+    @Test(expected = SQLException.class)
+    public void testCase08() throws SQLException {
+        final long now = System.currentTimeMillis();
+        // insert
+        final String sql = "insert into t? using " + tbname2 + " tags(?) values(?, ?, ?) ? ";
+        try (PreparedStatement pstmt = conn.prepareStatement(sql)) {
+            pstmt.setInt(1, 1);
+            pstmt.setString(2, special_character_str_5);
+            pstmt.setTimestamp(3, new Timestamp(now));
+            pstmt.setBytes(4, special_character_str_5.getBytes());
+            int ret = pstmt.executeUpdate();
+            Assert.assertEquals(1, ret);
+        }
+    }
+
+    @Test
+    public void testCase09() throws SQLException {
+        final long now = System.currentTimeMillis();
+        // insert
+        final String sql = "insert into ?.t? using " + tbname2 + " tags(?) values(?, ?, ?) t? using weather tags(?) values(?,?,?) ";
+        try (PreparedStatement pstmt = conn.prepareStatement(sql)) {
+            // t1
+            pstmt.setString(1, dbName);
+            pstmt.setInt(2, 1);
+            pstmt.setString(3, special_character_str_5);
+            pstmt.setTimestamp(4, new Timestamp(now));
+            pstmt.setBytes(5, special_character_str_5.getBytes());
+            // t2
+            pstmt.setInt(7, 2);
+            pstmt.setString(8, special_character_str_5);
+            pstmt.setTimestamp(9, new Timestamp(now));
+            pstmt.setString(11, special_character_str_5);
+
+            int ret = pstmt.executeUpdate();
+            Assert.assertEquals(2, ret);
+        }
+        // query t1
+        String query = "select * from t?";
+        try (PreparedStatement pstmt = conn.prepareStatement(query)) {
+            pstmt.setInt(1, 1);
+
+            ResultSet rs = pstmt.executeQuery();
+            rs.next();
+            long timestamp = rs.getTimestamp(1).getTime();
+            Assert.assertEquals(now, timestamp);
+            String f1 = new String(rs.getBytes(2));
+            Assert.assertEquals(special_character_str_5, f1);
+            String f2 = rs.getString(3);
+            Assert.assertNull(f2);
+        }
+        // query t2
+        query = "select * from t2";
+        try (Statement stmt = conn.createStatement()) {
+            ResultSet rs = stmt.executeQuery(query);
+            rs.next();
+            long timestamp = rs.getTimestamp(1).getTime();
+            Assert.assertEquals(now, timestamp);
+            byte[] f1 = rs.getBytes(2);
+            Assert.assertNull(f1);
+            String f2 = new String(rs.getBytes(3));
+            Assert.assertEquals(special_character_str_5, f2);
+        }
+    }
+
+    @Test
+    public void testCase10() throws SQLException {
+        final long now = System.currentTimeMillis();
+
+        // insert
+        final String sql = "insert into t? using ? tags(?) values(?, ?, ?) t? using " + tbname2 + " tags(?) values(?,?,?) ";
+        try (PreparedStatement pstmt = conn.prepareStatement(sql)) {
+            // t1
+            pstmt.setInt(1, 1);
+            pstmt.setString(2, tbname2);
+            pstmt.setString(3, special_character_str_5);
+            pstmt.setTimestamp(4, new Timestamp(now));
+            pstmt.setBytes(5, special_character_str_5.getBytes());
+            // t2
+            pstmt.setInt(7, 2);
+            pstmt.setString(8, special_character_str_5);
+            pstmt.setTimestamp(9, new Timestamp(now));
+            pstmt.setString(11, special_character_str_5);
+
+            int ret = pstmt.executeUpdate();
+            Assert.assertEquals(2, ret);
+        }
+        //query t1
+        String query = "select * from ?.t? where ts < ? and ts >= ? and ? is not null";
+        try (PreparedStatement pstmt = conn.prepareStatement(query)) {
+            pstmt.setString(1, dbName);
+            pstmt.setInt(2, 1);
+            pstmt.setTimestamp(3, new Timestamp(System.currentTimeMillis()));
+            pstmt.setTimestamp(4, new Timestamp(0));
+            pstmt.setString(5, "f1");
+
+            ResultSet rs = pstmt.executeQuery();
+            rs.next();
+            long timestamp = rs.getTimestamp(1).getTime();
+            Assert.assertEquals(now, timestamp);
+            String f1 = new String(rs.getBytes(2));
+            Assert.assertEquals(special_character_str_5, f1);
+            byte[] f2 = rs.getBytes(3);
+            Assert.assertNull(f2);
+        }
+        // query t2
+        query = "select * from t? where ts < ? and ts >= ? and ? is not null";
+        try (PreparedStatement pstmt = conn.prepareStatement(query)) {
+            pstmt.setInt(1, 2);
+            pstmt.setTimestamp(2, new Timestamp(System.currentTimeMillis()));
+            pstmt.setTimestamp(3, new Timestamp(0));
+            pstmt.setString(4, "f2");
+
+            ResultSet rs = pstmt.executeQuery();
+            rs.next();
+            long timestamp = rs.getTimestamp(1).getTime();
+            Assert.assertEquals(now, timestamp);
+            byte[] f1 = rs.getBytes(2);
+            Assert.assertNull(f1);
+            String f2 = new String(rs.getBytes(3));
+            Assert.assertEquals(special_character_str_5, f2);
+        }
+    }
+
+    @Test(expected = SQLException.class)
+    public void testCase11() throws SQLException {
+        final String speicalCharacterStr = "?#sd@$f(((s[P)){]}f?s[]{}%vs^a&d*jhg)(j))(f@~!?$";
+        final long now = System.currentTimeMillis();
+
+        final String sql = "insert into t? using " + tbname2 + " values(?, ?, 'abc?abc') ";
+        try (PreparedStatement pstmt = conn.prepareStatement(sql)) {
+            pstmt.setInt(1, 1);
+            pstmt.setTimestamp(2, new Timestamp(now));
+            pstmt.setBytes(3, speicalCharacterStr.getBytes());
+
+            int ret = pstmt.executeUpdate();
+            Assert.assertEquals(1, ret);
+        }
+    }
+
+    @Before
+    public void before() throws SQLException {
+        try (Statement stmt = conn.createStatement()) {
+            stmt.execute("drop table if exists " + tbname1 + "");
+            stmt.execute("create table " + tbname1 + "(ts timestamp,f1 binary(64),f2 nchar(64))");
+            stmt.execute("drop table if exists " + tbname2);
+            stmt.execute("create table " + tbname2 + "(ts timestamp, f1 binary(64), f2 nchar(64)) tags(loc nchar(64))");
+        }
+    }
+
+    @BeforeClass
+    public static void beforeClass() throws SQLException {
+        String url = "jdbc:TAOS://" + host + ":6030/?user=root&password=taosdata";
+        conn = DriverManager.getConnection(url);
+        try (Statement stmt = conn.createStatement()) {
+            stmt.execute("drop database if exists " + dbName);
+            stmt.execute("create database if not exists " + dbName);
+            stmt.execute("use " + dbName);
+        }
+    }
+
+    @AfterClass
+    public static void afterClass() throws SQLException {
+        if (conn != null)
+            conn.close();
+    }
+
+}

src/connector/jdbc/src/test/java/com/taosdata/jdbc/cases/InsertSpecialCharacterRestfulTest.java

+package com.taosdata.jdbc.cases;
+
+import org.junit.*;
+
+import java.sql.*;
+
+public class InsertSpecialCharacterRestfulTest {
+
+    private static final String host = "127.0.0.1";
+    //    private static final String host = "master";
+    private static Connection conn;
+    private static String dbName = "spec_char_test";
+    private static String tbname1 = "test";
+    private static String tbname2 = "weather";
+    private static String special_character_str_1 = "$asd$$fsfsf$";
+    private static String special_character_str_2 = "\\asdfsfsf\\\\";
+    private static String special_character_str_3 = "\\\\asdfsfsf\\";
+    private static String special_character_str_4 = "?asd??fsf?sf?";
+    private static String special_character_str_5 = "?#sd@$f(('<(s[P)>\"){]}f?s[]{}%vaew|\"fsfs^a&d*jhg)(j))(f@~!?$";
+
+    @Test
+    public void testCase01() throws SQLException {
+        final long now = System.currentTimeMillis();
+        // insert
+        final String sql = "insert into " + tbname1 + "(ts, f1) values(?, ?)";
+        try (PreparedStatement pstmt = conn.prepareStatement(sql)) {
+            pstmt.setTimestamp(1, new Timestamp(now));
+            pstmt.setBytes(2, special_character_str_1.getBytes());
+            int ret = pstmt.executeUpdate();
+            Assert.assertEquals(1, ret);
+        }
+        // query
+        final String query = "select * from ?";
+        try (PreparedStatement pstmt = conn.prepareStatement(query)) {
+            pstmt.setString(1, tbname1);
+
+            ResultSet rs = pstmt.executeQuery();
+            rs.next();
+            long timestamp = rs.getTimestamp(1).getTime();
+            Assert.assertEquals(now, timestamp);
+            String f1 = new String(rs.getBytes(2));
+            Assert.assertEquals(special_character_str_1, f1);
+            String f2 = rs.getString(3);
+            Assert.assertNull(f2);
+        }
+    }
+
+
+    @Test
+    public void testCase02() throws SQLException {
+        //TODO:
+        // Expected :\asdfsfsf\\
+        // Actual   :\asdfsfsf\
+
+        final long now = System.currentTimeMillis();
+        // insert
+        final String sql = "insert into " + tbname1 + "(ts, f1) values(?, ?)";
+        try (PreparedStatement pstmt = conn.prepareStatement(sql)) {
+            pstmt.setTimestamp(1, new Timestamp(now));
+            pstmt.setBytes(2, special_character_str_2.getBytes());
+            int ret = pstmt.executeUpdate();
+            Assert.assertEquals(1, ret);
+        }
+        // query
+        final String query = "select * from " + tbname1;
+        try (PreparedStatement pstmt = conn.prepareStatement(query)) {
+            ResultSet rs = pstmt.executeQuery();
+            rs.next();
+            long timestamp = rs.getTimestamp(1).getTime();
+            Assert.assertEquals(now, timestamp);
+            String f1 = new String(rs.getBytes(2));
+            //TODO: bug to be fixed
+//            Assert.assertEquals(special_character_str_2, f1);
+            Assert.assertEquals(special_character_str_2.substring(0, special_character_str_1.length() - 2), f1);
+            String f2 = rs.getString(3);
+            Assert.assertNull(f2);
+        }
+    }
+
+    @Test(expected = SQLException.class)
+    public void testCase03() throws SQLException {
+        //TODO:
+        // TDengine ERROR (216): Syntax error in SQL
+        final long now = System.currentTimeMillis();
+        // insert
+        final String sql = "insert into " + tbname1 + "(ts, f1) values(?, ?)";
+        try (PreparedStatement pstmt = conn.prepareStatement(sql)) {
+            pstmt.setTimestamp(1, new Timestamp(now));
+            pstmt.setBytes(2, special_character_str_3.getBytes());
+            int ret = pstmt.executeUpdate();
+            Assert.assertEquals(1, ret);
+        }
+        // query
+        final String query = "select * from " + tbname1;
+        try (PreparedStatement pstmt = conn.prepareStatement(query)) {
+            ResultSet rs = pstmt.executeQuery();
+            rs.next();
+            long timestamp = rs.getTimestamp(1).getTime();
+            Assert.assertEquals(now, timestamp);
+            String f1 = new String(rs.getBytes(2));
+            Assert.assertEquals(special_character_str_3, f1);
+            String f2 = rs.getString(3);
+            Assert.assertNull(f2);
+        }
+    }
+
+    @Test
+    public void testCase04() throws SQLException {
+        final long now = System.currentTimeMillis();
+        // insert
+        final String sql = "insert into " + tbname1 + "(ts, f1) values(?, ?)";
+        try (PreparedStatement pstmt = conn.prepareStatement(sql)) {
+            pstmt.setTimestamp(1, new Timestamp(now));
+            pstmt.setBytes(2, special_character_str_4.getBytes());
+            int ret = pstmt.executeUpdate();
+            Assert.assertEquals(1, ret);
+        }
+        // query
+        final String query = "select * from " + tbname1;
+        try (Statement stmt = conn.createStatement()) {
+            ResultSet rs = stmt.executeQuery(query);
+            rs.next();
+            long timestamp = rs.getTimestamp(1).getTime();
+            Assert.assertEquals(now, timestamp);
+            String f1 = new String(rs.getBytes(2));
+            Assert.assertEquals(special_character_str_4, f1);
+            String f2 = rs.getString(3);
+            Assert.assertNull(f2);
+        }
+    }
+
+    @Test
+    public void testCase05() throws SQLException {
+        final long now = System.currentTimeMillis();
+        // insert
+        final String sql = "insert into " + tbname1 + "(ts, f1) values(?, ?)";
+        try (PreparedStatement pstmt = conn.prepareStatement(sql)) {
+            pstmt.setTimestamp(1, new Timestamp(now));
+            pstmt.setBytes(2, special_character_str_5.getBytes());
+            int ret = pstmt.executeUpdate();
+            Assert.assertEquals(1, ret);
+        }
+        // query
+        final String query = "select * from " + tbname1;
+        try (Statement stmt = conn.createStatement()) {
+            ResultSet rs = stmt.executeQuery(query);
+            rs.next();
+            long timestamp = rs.getTimestamp(1).getTime();
+            Assert.assertEquals(now, timestamp);
+            String f1 = new String(rs.getBytes(2));
+            Assert.assertEquals(special_character_str_5, f1);
+            String f2 = rs.getString(3);
+            Assert.assertNull(f2);
+        }
+    }
+
+    @Test
+    public void testCase06() throws SQLException {
+        final long now = System.currentTimeMillis();
+        // insert
+        final String sql = "insert into t? using " + tbname2 + " tags(?) values(?, ?, ?)";
+        try (PreparedStatement pstmt = conn.prepareStatement(sql)) {
+            pstmt.setInt(1, 1);
+            pstmt.setString(2, special_character_str_4);
+            pstmt.setTimestamp(3, new Timestamp(now));
+            pstmt.setBytes(4, special_character_str_4.getBytes());
+            int ret = pstmt.executeUpdate();
+            Assert.assertEquals(1, ret);
+        }
+        // query t1
+        final String query = "select * from t1";
+        try (Statement stmt = conn.createStatement()) {
+            ResultSet rs = stmt.executeQuery(query);
+            rs.next();
+            long timestamp = rs.getTimestamp(1).getTime();
+            Assert.assertEquals(now, timestamp);
+            String f1 = new String(rs.getBytes(2));
+            Assert.assertEquals(special_character_str_4, f1);
+            String f2 = rs.getString(3);
+            Assert.assertNull(f2);
+        }
+    }
+
+    @Test
+    public void testCase07() throws SQLException {
+        final long now = System.currentTimeMillis();
+        // insert
+        final String sql = "insert into " + tbname1 + "(ts, f1, f2) values(?, ?, ?)  ; ";
+        try (PreparedStatement pstmt = conn.prepareStatement(sql)) {
+            pstmt.setTimestamp(1, new Timestamp(now));
+            pstmt.setBytes(2, special_character_str_4.getBytes());
+            pstmt.setString(3, special_character_str_4);
+            int ret = pstmt.executeUpdate();
+            Assert.assertEquals(1, ret);
+        }
+        // query
+        final String query = "select * from " + tbname1;
+        try (Statement stmt = conn.createStatement()) {
+            ResultSet rs = stmt.executeQuery(query);
+            rs.next();
+            long timestamp = rs.getTimestamp(1).getTime();
+            Assert.assertEquals(now, timestamp);
+            String f1 = new String(rs.getBytes(2));
+            Assert.assertEquals(special_character_str_4, f1);
+            String f2 = rs.getString(3);
+            Assert.assertEquals(special_character_str_4, f2);
+        }
+    }
+
+    @Test(expected = SQLException.class)
+    public void testCase08() throws SQLException {
+        final long now = System.currentTimeMillis();
+        // insert
+        final String sql = "insert into t? using " + tbname2 + " tags(?) values(?, ?, ?) ? ";
+        try (PreparedStatement pstmt = conn.prepareStatement(sql)) {
+            pstmt.setInt(1, 1);
+            pstmt.setString(2, special_character_str_5);
+            pstmt.setTimestamp(3, new Timestamp(now));
+            pstmt.setBytes(4, special_character_str_5.getBytes());
+            int ret = pstmt.executeUpdate();
+            Assert.assertEquals(1, ret);
+        }
+    }
+
+    @Test
+    public void testCase09() throws SQLException {
+        final long now = System.currentTimeMillis();
+        // insert
+        final String sql = "insert into ?.t? using " + tbname2 + " tags(?) values(?, ?, ?) t? using weather tags(?) values(?,?,?) ";
+        try (PreparedStatement pstmt = conn.prepareStatement(sql)) {
+            // t1
+            pstmt.setString(1, dbName);
+            pstmt.setInt(2, 1);
+            pstmt.setString(3, special_character_str_5);
+            pstmt.setTimestamp(4, new Timestamp(now));
+            pstmt.setBytes(5, special_character_str_5.getBytes());
+            // t2
+            pstmt.setInt(7, 2);
+            pstmt.setString(8, special_character_str_5);
+            pstmt.setTimestamp(9, new Timestamp(now));
+            pstmt.setString(11, special_character_str_5);
+
+            int ret = pstmt.executeUpdate();
+            Assert.assertEquals(2, ret);
+        }
+        // query t1
+        String query = "select * from t?";
+        try (PreparedStatement pstmt = conn.prepareStatement(query)) {
+            pstmt.setInt(1, 1);
+
+            ResultSet rs = pstmt.executeQuery();
+            rs.next();
+            long timestamp = rs.getTimestamp(1).getTime();
+            Assert.assertEquals(now, timestamp);
+            String f1 = new String(rs.getBytes(2));
+            Assert.assertEquals(special_character_str_5, f1);
+            String f2 = rs.getString(3);
+            Assert.assertNull(f2);
+        }
+        // query t2
+        query = "select * from t2";
+        try (Statement stmt = conn.createStatement()) {
+            ResultSet rs = stmt.executeQuery(query);
+            rs.next();
+            long timestamp = rs.getTimestamp(1).getTime();
+            Assert.assertEquals(now, timestamp);
+            byte[] f1 = rs.getBytes(2);
+            Assert.assertNull(f1);
+            String f2 = new String(rs.getBytes(3));
+            Assert.assertEquals(special_character_str_5, f2);
+        }
+    }
+
+    @Test
+    public void testCase10() throws SQLException {
+        final long now = System.currentTimeMillis();
+
+        // insert
+        final String sql = "insert into t? using ? tags(?) values(?, ?, ?) t? using " + tbname2 + " tags(?) values(?,?,?) ";
+        try (PreparedStatement pstmt = conn.prepareStatement(sql)) {
+            // t1
+            pstmt.setInt(1, 1);
+            pstmt.setString(2, tbname2);
+            pstmt.setString(3, special_character_str_5);
+            pstmt.setTimestamp(4, new Timestamp(now));
+            pstmt.setBytes(5, special_character_str_5.getBytes());
+            // t2
+            pstmt.setInt(7, 2);
+            pstmt.setString(8, special_character_str_5);
+            pstmt.setTimestamp(9, new Timestamp(now));
+            pstmt.setString(11, special_character_str_5);
+
+            int ret = pstmt.executeUpdate();
+            Assert.assertEquals(2, ret);
+        }
+        //query t1
+        String query = "select * from ?.t? where ts < ? and ts >= ? and ? is not null";
+        try (PreparedStatement pstmt = conn.prepareStatement(query)) {
+            pstmt.setString(1, dbName);
+            pstmt.setInt(2, 1);
+            pstmt.setTimestamp(3, new Timestamp(System.currentTimeMillis()));
+            pstmt.setTimestamp(4, new Timestamp(0));
+            pstmt.setString(5, "f1");
+
+            ResultSet rs = pstmt.executeQuery();
+            rs.next();
+            long timestamp = rs.getTimestamp(1).getTime();
+            Assert.assertEquals(now, timestamp);
+            String f1 = new String(rs.getBytes(2));
+            Assert.assertEquals(special_character_str_5, f1);
+            byte[] f2 = rs.getBytes(3);
+            Assert.assertNull(f2);
+        }
+        // query t2
+        query = "select * from t? where ts < ? and ts >= ? and ? is not null";
+        try (PreparedStatement pstmt = conn.prepareStatement(query)) {
+            pstmt.setInt(1, 2);
+            pstmt.setTimestamp(2, new Timestamp(System.currentTimeMillis()));
+            pstmt.setTimestamp(3, new Timestamp(0));
+            pstmt.setString(4, "f2");
+
+            ResultSet rs = pstmt.executeQuery();
+            rs.next();
+            long timestamp = rs.getTimestamp(1).getTime();
+            Assert.assertEquals(now, timestamp);
+            byte[] f1 = rs.getBytes(2);
+            Assert.assertNull(f1);
+            String f2 = new String(rs.getBytes(3));
+            Assert.assertEquals(special_character_str_5, f2);
+        }
+    }
+
+    @Test(expected = SQLException.class)
+    public void testCase11() throws SQLException {
+        final String speicalCharacterStr = "?#sd@$f(((s[P)){]}f?s[]{}%vs^a&d*jhg)(j))(f@~!?$";
+        final long now = System.currentTimeMillis();
+
+        final String sql = "insert into t? using " + tbname2 + " values(?, ?, 'abc?abc') ";
+        try (PreparedStatement pstmt = conn.prepareStatement(sql)) {
+            pstmt.setInt(1, 1);
+            pstmt.setTimestamp(2, new Timestamp(now));
+            pstmt.setBytes(3, speicalCharacterStr.getBytes());
+
+            int ret = pstmt.executeUpdate();
+            Assert.assertEquals(1, ret);
+        }
+    }
+
+    @Before
+    public void before() throws SQLException {
+        try (Statement stmt = conn.createStatement()) {
+            stmt.execute("drop table if exists " + tbname1 + "");
+            stmt.execute("create table " + tbname1 + "(ts timestamp,f1 binary(64),f2 nchar(64))");
+            stmt.execute("drop table if exists " + tbname2);
+            stmt.execute("create table " + tbname2 + "(ts timestamp, f1 binary(64), f2 nchar(64)) tags(loc nchar(64))");
+        }
+    }
+
+    @BeforeClass
+    public static void beforeClass() throws SQLException {
+        String url = "jdbc:TAOS-RS://" + host + ":6041/?user=root&password=taosdata";
+        conn = DriverManager.getConnection(url);
+        try (Statement stmt = conn.createStatement()) {
+            stmt.execute("drop database if exists " + dbName);
+            stmt.execute("create database if not exists " + dbName);
+            stmt.execute("use " + dbName);
+        }
+    }
+
+    @AfterClass
+    public static void afterClass() throws SQLException {
+        if (conn != null)
+            conn.close();
+    }
+
+}

src/connector/jdbc/src/test/java/com/taosdata/jdbc/cases/NullValueInResultSetForJdbcJniTest.java

+package com.taosdata.jdbc.cases;
+
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+
+import java.sql.*;
+
+public class NullValueInResultSetForJdbcJniTest {
+
+    private static final String host = "127.0.0.1";
+    Connection conn;
+
+    @Test
+    public void test() {
+        try (Statement stmt = conn.createStatement()) {
+            ResultSet rs = stmt.executeQuery("select * from weather");
+            ResultSetMetaData meta = rs.getMetaData();
+            while (rs.next()) {
+                for (int i = 1; i <= meta.getColumnCount(); i++) {
+                    Object value = rs.getObject(i);
+                    System.out.print(meta.getColumnLabel(i) + ": " + value + "\t");
+                }
+                System.out.println();
+            }
+
+        } catch (SQLException e) {
+            e.printStackTrace();
+        }
+    }
+
+    @Before
+    public void before() throws SQLException {
+        final String url = "jdbc:TAOS://" + host + ":6030/?user=root&password=taosdata";
+        conn = DriverManager.getConnection(url);
+        try (Statement stmt = conn.createStatement()) {
+            stmt.execute("drop database if exists test_null");
+            stmt.execute("create database if not exists test_null");
+            stmt.execute("use test_null");
+            stmt.execute("create table weather(ts timestamp, f1 int, f2 bigint, f3 float, f4 double, f5 smallint, f6 tinyint, f7 bool, f8 binary(64), f9 nchar(64))");
+            stmt.executeUpdate("insert into weather(ts, f1) values(now+1s, 1)");
+            stmt.executeUpdate("insert into weather(ts, f2) values(now+2s, 2)");
+            stmt.executeUpdate("insert into weather(ts, f3) values(now+3s, 3.0)");
+            stmt.executeUpdate("insert into weather(ts, f4) values(now+4s, 4.0)");
+            stmt.executeUpdate("insert into weather(ts, f5) values(now+5s, 5)");
+            stmt.executeUpdate("insert into weather(ts, f6) values(now+6s, 6)");
+            stmt.executeUpdate("insert into weather(ts, f7) values(now+7s, true)");
+            stmt.executeUpdate("insert into weather(ts, f8) values(now+8s, 'hello')");
+            stmt.executeUpdate("insert into weather(ts, f9) values(now+9s, '涛思数据')");
+        } catch (SQLException e) {
+            e.printStackTrace();
+        }
+    }
+
+    @After
+    public void after() {
+        try {
+            if (conn != null)
+                conn.close();
+        } catch (SQLException e) {
+            e.printStackTrace();
+        }
+    }
+}

src/connector/jdbc/src/test/java/com/taosdata/jdbc/cases/TD3841Test.java

+package com.taosdata.jdbc.cases;
+
+import com.taosdata.jdbc.TSDBDriver;
+import com.taosdata.jdbc.utils.TimestampUtil;
+import org.junit.*;
+
+import java.sql.*;
+import java.util.Properties;
+
+public class TD3841Test {
+    private static final String host = "127.0.0.1";
+    private static Properties properties;
+    private static Connection conn_restful;
+    private static Connection conn_jni;
+
+    @Test
+    public void testRestful() throws SQLException {
+        String url = "jdbc:TAOS-RS://" + host + ":6041/?user=root&password=taosdata";
+        conn_restful = DriverManager.getConnection(url, properties);
+
+        try (Statement stmt = conn_restful.createStatement()) {
+            stmt.execute("drop database if exists test_null");
+            stmt.execute("create database if not exists test_null");
+            stmt.execute("use test_null");
+            stmt.execute("create table weather(ts timestamp, f1 timestamp, f2 int, f3 bigint, f4 float, f5 double, f6 smallint, f7 tinyint, f8 bool, f9 binary(64), f10 nchar(64))");
+            stmt.executeUpdate("insert into weather(ts, f1) values(now+1s, " + TimestampUtil.datetimeToLong("2021-04-21 12:00:00.000") + ")");
+            ResultSet rs = stmt.executeQuery("select * from weather");
+            rs.next();
+
+            Assert.assertEquals("2021-04-21 12:00:00.000", TimestampUtil.longToDatetime(rs.getTimestamp(2).getTime()));
+            Assert.assertEquals(true, rs.getInt(3) == 0 && rs.wasNull());
+            Assert.assertEquals(true, rs.getLong(4) == 0 && rs.wasNull());
+            Assert.assertEquals(true, rs.getFloat(5) == 0.0f && rs.wasNull());
+            Assert.assertEquals(true, rs.getDouble(6) == 0.0f && rs.wasNull());
+            Assert.assertEquals(true, rs.getByte(7) == 0 && rs.wasNull());
+            Assert.assertEquals(true, rs.getShort(8) == 0 && rs.wasNull());
+            Assert.assertEquals(null, rs.getBytes(9));
+            Assert.assertEquals(null, rs.getString(10));
+
+            rs.close();
+        } catch (SQLException e) {
+            e.printStackTrace();
+        }
+    }
+
+    @Test
+    public void testJNI() throws SQLException {
+        final String url = "jdbc:TAOS://" + host + ":6030/?user=root&password=taosdata";
+        conn_jni = DriverManager.getConnection(url, properties);
+
+        try (Statement stmt = conn_jni.createStatement()) {
+            stmt.execute("drop database if exists test_null");
+            stmt.execute("create database if not exists test_null");
+            stmt.execute("use test_null");
+            stmt.execute("create table weather(ts timestamp, f1 timestamp, f2 int, f3 bigint, f4 float, f5 double, f6 smallint, f7 tinyint, f8 bool, f9 binary(64), f10 nchar(64))");
+            stmt.executeUpdate("insert into weather(ts, f1) values(now+1s, " + TimestampUtil.datetimeToLong("2021-04-21 12:00:00.000") + ")");
+            ResultSet rs = stmt.executeQuery("select * from weather");
+            rs.next();
+
+            Assert.assertEquals("2021-04-21 12:00:00.000", TimestampUtil.longToDatetime(rs.getTimestamp(2).getTime()));
+            Assert.assertEquals(true, rs.getInt(3) == 0 && rs.wasNull());
+            Assert.assertEquals(true, rs.getLong(4) == 0 && rs.wasNull());
+            Assert.assertEquals(true, rs.getFloat(5) == 0.0f && rs.wasNull());
+            Assert.assertEquals(true, rs.getDouble(6) == 0.0f && rs.wasNull());
+            Assert.assertEquals(true, rs.getByte(7) == 0 && rs.wasNull());
+            Assert.assertEquals(true, rs.getShort(8) == 0 && rs.wasNull());
+            Assert.assertEquals(null, rs.getBytes(9));
+            Assert.assertEquals(null, rs.getString(10));
+
+            rs.close();
+        } catch (SQLException e) {
+            e.printStackTrace();
+        }
+    }
+
+    @BeforeClass
+    public static void beforeClass() {
+        properties = new Properties();
+        properties.setProperty(TSDBDriver.PROPERTY_KEY_CHARSET, "UTF-8");
+        properties.setProperty(TSDBDriver.PROPERTY_KEY_LOCALE, "en_US.UTF-8");
+        properties.setProperty(TSDBDriver.PROPERTY_KEY_TIME_ZONE, "UTC-8");
+    }
+
+    @AfterClass
+    public static void afterClass() throws SQLException {
+        if (conn_restful != null)
+            conn_restful.close();
+        if (conn_jni != null)
+            conn_jni.close();
+    }
+}

src/connector/jdbc/src/test/java/com/taosdata/jdbc/cases/TwoTypeTimestampPercisionInJniTest.java

+package com.taosdata.jdbc.cases;
+
+
+import com.taosdata.jdbc.TSDBDriver;
+import org.junit.AfterClass;
+import org.junit.Assert;
+import org.junit.BeforeClass;
+import org.junit.Test;
+
+import java.sql.*;
+import java.util.Properties;
+
+public class TwoTypeTimestampPercisionInJniTest {
+
+    private static final String host = "127.0.0.1";
+    private static final String ms_timestamp_db = "ms_precision_test";
+    private static final String us_timestamp_db = "us_precision_test";
+    private static final long timestamp1 = System.currentTimeMillis();
+    private static final long timestamp2 = timestamp1 * 1000 + 123;
+
+    private static Connection conn;
+
+    @Test
+    public void testCase1() {
+        try (Statement stmt = conn.createStatement()) {
+            ResultSet rs = stmt.executeQuery("select last_row(ts) from " + ms_timestamp_db + ".weather");
+            rs.next();
+            long ts = rs.getTimestamp(1).getTime();
+            Assert.assertEquals(timestamp1, ts);
+            ts = rs.getLong(1);
+            Assert.assertEquals(timestamp1, ts);
+        } catch (SQLException e) {
+            e.printStackTrace();
+        }
+    }
+
+    @Test
+    public void testCase2() {
+        try (Statement stmt = conn.createStatement()) {
+            ResultSet rs = stmt.executeQuery("select last_row(ts) from " + us_timestamp_db + ".weather");
+            rs.next();
+
+            Timestamp timestamp = rs.getTimestamp(1);
+            System.out.println(timestamp);
+            long ts = timestamp.getTime();
+            Assert.assertEquals(timestamp1, ts);
+            int nanos = timestamp.getNanos();
+            Assert.assertEquals(timestamp2 % 1000_000l * 1000, nanos);
+
+            ts = rs.getLong(1);
+            Assert.assertEquals(timestamp1, ts);
+        } catch (SQLException e) {
+            e.printStackTrace();
+        }
+    }
+
+    @BeforeClass
+    public static void beforeClass() throws SQLException {
+        Properties properties = new Properties();
+        properties.setProperty(TSDBDriver.PROPERTY_KEY_CHARSET, "UTF-8");
+        properties.setProperty(TSDBDriver.PROPERTY_KEY_LOCALE, "en_US.UTF-8");
+        properties.setProperty(TSDBDriver.PROPERTY_KEY_TIME_ZONE, "UTC-8");
+
+        String url = "jdbc:TAOS://" + host + ":6030/?user=root&password=taosdata";
+        conn = DriverManager.getConnection(url, properties);
+
+        Statement stmt = conn.createStatement();
+        stmt.execute("drop database if exists " + ms_timestamp_db);
+        stmt.execute("create database if not exists " + ms_timestamp_db + " precision 'ms'");
+        stmt.execute("create table " + ms_timestamp_db + ".weather(ts timestamp, f1 int)");
+        stmt.executeUpdate("insert into " + ms_timestamp_db + ".weather(ts,f1) values(" + timestamp1 + ", 127)");
+
+        stmt.execute("drop database if exists " + us_timestamp_db);
+        stmt.execute("create database if not exists " + us_timestamp_db + " precision 'us'");
+        stmt.execute("create table " + us_timestamp_db + ".weather(ts timestamp, f1 int)");
+        stmt.executeUpdate("insert into " + us_timestamp_db + ".weather(ts,f1) values(" + timestamp2 + ", 127)");
+        stmt.close();
+    }
+
+    @AfterClass
+    public static void afterClass() {
+        try {
+            if (conn != null)
+                conn.close();
+        } catch (SQLException e) {
+            e.printStackTrace();
+        }
+    }
+}

src/connector/jdbc/src/test/java/com/taosdata/jdbc/cases/TwoTypeTimestampPercisionInRestfulTest.java

+package com.taosdata.jdbc.cases;
+
+
+import com.taosdata.jdbc.TSDBDriver;
+import org.junit.AfterClass;
+import org.junit.Assert;
+import org.junit.BeforeClass;
+import org.junit.Test;
+
+import java.sql.*;
+import java.util.Properties;
+
+public class TwoTypeTimestampPercisionInRestfulTest {
+
+    private static final String host = "127.0.0.1";
+    private static final String ms_timestamp_db = "ms_precision_test";
+    private static final String us_timestamp_db = "us_precision_test";
+    private static final long timestamp1 = System.currentTimeMillis();
+    private static final long timestamp2 = timestamp1 * 1000 + 123;
+
+    private static Connection conn1;
+    private static Connection conn2;
+    private static Connection conn3;
+
+    @Test
+    public void testCase1() {
+        try (Statement stmt = conn1.createStatement()) {
+            ResultSet rs = stmt.executeQuery("select last_row(ts) from " + ms_timestamp_db + ".weather");
+            rs.next();
+            long ts = rs.getTimestamp(1).getTime();
+            Assert.assertEquals(timestamp1, ts);
+            ts = rs.getLong(1);
+            Assert.assertEquals(timestamp1, ts);
+        } catch (SQLException e) {
+            e.printStackTrace();
+        }
+    }
+
+    @Test
+    public void testCase2() {
+        try (Statement stmt = conn1.createStatement()) {
+            ResultSet rs = stmt.executeQuery("select last_row(ts) from " + us_timestamp_db + ".weather");
+            rs.next();
+
+            Timestamp timestamp = rs.getTimestamp(1);
+            long ts = timestamp.getTime();
+            Assert.assertEquals(timestamp1, ts);
+            int nanos = timestamp.getNanos();
+            Assert.assertEquals(timestamp2 % 1000_000l * 1000, nanos);
+
+            ts = rs.getLong(1);
+            Assert.assertEquals(timestamp1, ts);
+        } catch (SQLException e) {
+            e.printStackTrace();
+        }
+    }
+
+    @Test
+    public void testCase3() {
+        try (Statement stmt = conn2.createStatement()) {
+            ResultSet rs = stmt.executeQuery("select last_row(ts) from " + ms_timestamp_db + ".weather");
+            rs.next();
+            Timestamp rsTimestamp = rs.getTimestamp(1);
+            long ts = rsTimestamp.getTime();
+            Assert.assertEquals(timestamp1, ts);
+            ts = rs.getLong(1);
+            Assert.assertEquals(timestamp1, ts);
+        } catch (SQLException e) {
+            e.printStackTrace();
+        }
+    }
+
+    @Test
+    public void testCase4() {
+        try (Statement stmt = conn2.createStatement()) {
+            ResultSet rs = stmt.executeQuery("select last_row(ts) from " + us_timestamp_db + ".weather");
+            rs.next();
+
+            Timestamp timestamp = rs.getTimestamp(1);
+            long ts = timestamp.getTime();
+            Assert.assertEquals(timestamp1, ts);
+            int nanos = timestamp.getNanos();
+            Assert.assertEquals(timestamp2 % 1000_000l * 1000, nanos);
+
+            ts = rs.getLong(1);
+            Assert.assertEquals(timestamp1, ts);
+        } catch (SQLException e) {
+            e.printStackTrace();
+        }
+    }
+
+    @Test
+    public void testCase5() {
+        try (Statement stmt = conn3.createStatement()) {
+            ResultSet rs = stmt.executeQuery("select last_row(ts) from " + ms_timestamp_db + ".weather");
+            rs.next();
+            long ts = rs.getTimestamp(1).getTime();
+            Assert.assertEquals(timestamp1, ts);
+            ts = rs.getLong(1);
+            Assert.assertEquals(timestamp1, ts);
+        } catch (SQLException e) {
+            e.printStackTrace();
+        }
+    }
+
+    @Test
+    public void testCase6() {
+        try (Statement stmt = conn3.createStatement()) {
+            ResultSet rs = stmt.executeQuery("select last_row(ts) from " + us_timestamp_db + ".weather");
+            rs.next();
+
+            Timestamp timestamp = rs.getTimestamp(1);
+            long ts = timestamp.getTime();
+            Assert.assertEquals(timestamp1, ts);
+            int nanos = timestamp.getNanos();
+            Assert.assertEquals(timestamp2 % 1000_000l * 1000, nanos);
+
+            ts = rs.getLong(1);
+            Assert.assertEquals(timestamp1, ts);
+        } catch (SQLException e) {
+            e.printStackTrace();
+        }
+    }
+
+    @BeforeClass
+    public static void beforeClass() throws SQLException {
+        Properties properties = new Properties();
+        properties.setProperty(TSDBDriver.PROPERTY_KEY_CHARSET, "UTF-8");
+        properties.setProperty(TSDBDriver.PROPERTY_KEY_LOCALE, "en_US.UTF-8");
+        properties.setProperty(TSDBDriver.PROPERTY_KEY_TIME_ZONE, "UTC-8");
+//        properties.setProperty(TSDBDriver.PROPERTY_KEY_TIMESTAMP_FORMAT, "TIMESTAMP");
+
+        String url = "jdbc:TAOS-RS://" + host + ":6041/?user=root&password=taosdata";
+        conn1 = DriverManager.getConnection(url, properties);
+
+        url = "jdbc:TAOS-RS://" + host + ":6041/?user=root&password=taosdata&timestampFormat=timestamp";
+        conn2 = DriverManager.getConnection(url, properties);
+
+        url = "jdbc:TAOS-RS://" + host + ":6041/?user=root&password=taosdata&timestampFormat=utc";
+        conn3 = DriverManager.getConnection(url, properties);
+
+        Statement stmt = conn1.createStatement();
+        stmt.execute("drop database if exists " + ms_timestamp_db);
+        stmt.execute("create database if not exists " + ms_timestamp_db + " precision 'ms'");
+        stmt.execute("create table " + ms_timestamp_db + ".weather(ts timestamp, f1 int)");
+        stmt.executeUpdate("insert into " + ms_timestamp_db + ".weather(ts,f1) values(" + timestamp1 + ", 127)");
+
+        stmt.execute("drop database if exists " + us_timestamp_db);
+        stmt.execute("create database if not exists " + us_timestamp_db + " precision 'us'");
+        stmt.execute("create table " + us_timestamp_db + ".weather(ts timestamp, f1 int)");
+        stmt.executeUpdate("insert into " + us_timestamp_db + ".weather(ts,f1) values(" + timestamp2 + ", 127)");
+        stmt.close();
+    }
+
+    @AfterClass
+    public static void afterClass() {
+        try {
+            if (conn1 != null)
+                conn1.close();
+            if (conn2 != null)
+                conn2.close();
+            if (conn3 != null)
+                conn3.close();
+        } catch (SQLException e) {
+            e.printStackTrace();
+        }
+    }
+}

src/connector/jdbc/src/test/java/com/taosdata/jdbc/rs/RestfulPreparedStatementTest.java

@@ -6,11 +6,11 @@ import org.junit.BeforeClass;
 import org.junit.Test;
 
 import java.io.IOException;
-import java.io.Serializable;
 import java.sql.*;
 
 public class RestfulPreparedStatementTest {
     private static final String host = "127.0.0.1";
+    //    private static final String host = "master";
     private static Connection conn;
     private static final String sql_insert = "insert into t1 values(?, ?, ?, ?, ?, ?, ?, ?, ?, ?)";
     private static PreparedStatement pstmt_insert;
@@ -50,6 +50,51 @@ public class RestfulPreparedStatementTest {
         pstmt_insert.setNull(2, Types.INTEGER);
         int result = pstmt_insert.executeUpdate();
         Assert.assertEquals(1, result);
+
+        pstmt_insert.setTimestamp(1, new Timestamp(System.currentTimeMillis()));
+        pstmt_insert.setNull(3, Types.BIGINT);
+        result = pstmt_insert.executeUpdate();
+        Assert.assertEquals(1, result);
+
+        pstmt_insert.setTimestamp(1, new Timestamp(System.currentTimeMillis()));
+        pstmt_insert.setNull(4, Types.FLOAT);
+        result = pstmt_insert.executeUpdate();
+        Assert.assertEquals(1, result);
+
+        pstmt_insert.setTimestamp(1, new Timestamp(System.currentTimeMillis()));
+        pstmt_insert.setNull(5, Types.DOUBLE);
+        result = pstmt_insert.executeUpdate();
+        Assert.assertEquals(1, result);
+
+        pstmt_insert.setTimestamp(1, new Timestamp(System.currentTimeMillis()));
+        pstmt_insert.setNull(6, Types.SMALLINT);
+        result = pstmt_insert.executeUpdate();
+        Assert.assertEquals(1, result);
+
+        pstmt_insert.setTimestamp(1, new Timestamp(System.currentTimeMillis()));
+        pstmt_insert.setNull(7, Types.TINYINT);
+        result = pstmt_insert.executeUpdate();
+        Assert.assertEquals(1, result);
+
+        pstmt_insert.setTimestamp(1, new Timestamp(System.currentTimeMillis()));
+        pstmt_insert.setNull(8, Types.BOOLEAN);
+        result = pstmt_insert.executeUpdate();
+        Assert.assertEquals(1, result);
+
+        pstmt_insert.setTimestamp(1, new Timestamp(System.currentTimeMillis()));
+        pstmt_insert.setNull(9, Types.BINARY);
+        result = pstmt_insert.executeUpdate();
+        Assert.assertEquals(1, result);
+
+        pstmt_insert.setTimestamp(1, new Timestamp(System.currentTimeMillis()));
+        pstmt_insert.setNull(10, Types.NCHAR);
+        result = pstmt_insert.executeUpdate();
+        Assert.assertEquals(1, result);
+
+        pstmt_insert.setTimestamp(1, new Timestamp(System.currentTimeMillis()));
+        pstmt_insert.setNull(10, Types.OTHER);
+        result = pstmt_insert.executeUpdate();
+        Assert.assertEquals(1, result);
     }
 
     @Test
@@ -129,7 +174,7 @@ public class RestfulPreparedStatementTest {
         Assert.assertFalse(pstmt_insert.execute());
     }
 
-    class Person implements Serializable {
+    private class Person {
         String name;
         int age;
         boolean sex;

src/connector/jdbc/src/test/java/com/taosdata/jdbc/rs/RestfulResultSetTest.java

@@ -160,6 +160,7 @@ public class RestfulResultSetTest {
     @Test
     public void getTime() throws SQLException {
         Time f1 = rs.getTime("f1");
+        Assert.assertNotNull(f1);
         Assert.assertEquals("00:00:00", f1.toString());
     }
 

src/connector/jdbc/src/test/java/com/taosdata/jdbc/utils/UtilsTest.java

+package com.taosdata.jdbc.utils;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+import static org.junit.Assert.*;
+
+public class UtilsTest {
+
+    @Test
+    public void escapeSingleQuota() {
+        String s = "'''''a\\'";
+        String news = Utils.escapeSingleQuota(s);
+        Assert.assertEquals("\\'\\'\\'\\'\\'a\\'", news);
+
+        s = "\'''''a\\'";
+        news = Utils.escapeSingleQuota(s);
+        Assert.assertEquals("\\'\\'\\'\\'\\'a\\'", news);
+
+        s = "\'\'\'\''a\\'";
+        news = Utils.escapeSingleQuota(s);
+        Assert.assertEquals("\\'\\'\\'\\'\\'a\\'", news);
+    }
+}
\ No newline at end of file