[TD-3142]<fix>: fix JDBC-RESTful back ResultSet with null Type

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

@@ -308,7 +308,7 @@ public class DatabaseMetaDataResultSet implements ResultSet {
                 return colMetaData.getColIndex() + 1;
             }
         }
-        throw new SQLException(TSDBConstants.INVALID_VARIABLES);
+        throw TSDBError.createSQLException(TSDBErrorNumbers.ERROR_INVALID_VARIABLE);
     }
 
     @Override

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

@@ -14,16 +14,13 @@
  *****************************************************************************/
 package com.taosdata.jdbc;
 
+import java.sql.SQLException;
+import java.sql.Types;
 import java.util.HashMap;
 import java.util.Map;
 
 public abstract class TSDBConstants {
 
-    public static final String STATEMENT_CLOSED = "statement is closed";
-    public static final String UNSUPPORTED_METHOD_EXCEPTION_MSG = "this operation is NOT supported currently!";
-    public static final String INVALID_VARIABLES = "invalid variables";
-    public static final String RESULT_SET_IS_CLOSED = "resultSet is closed";
-
     public static final String DEFAULT_PORT = "6200";
     public static Map<Integer, String> DATATYPE_MAP = null;
 
@@ -77,8 +74,65 @@ public abstract class TSDBConstants {
         return WrapErrMsg("unkown error!");
     }
 
+    public static int taosType2JdbcType(int taosType) throws SQLException {
+        switch (taosType) {
+            case TSDBConstants.TSDB_DATA_TYPE_NULL:
+                return Types.NULL;
+            case TSDBConstants.TSDB_DATA_TYPE_BOOL:
+                return Types.BOOLEAN;
+            case TSDBConstants.TSDB_DATA_TYPE_TINYINT:
+                return Types.TINYINT;
+            case TSDBConstants.TSDB_DATA_TYPE_SMALLINT:
+                return Types.SMALLINT;
+            case TSDBConstants.TSDB_DATA_TYPE_INT:
+                return Types.INTEGER;
+            case TSDBConstants.TSDB_DATA_TYPE_BIGINT:
+                return Types.BIGINT;
+            case TSDBConstants.TSDB_DATA_TYPE_FLOAT:
+                return Types.FLOAT;
+            case TSDBConstants.TSDB_DATA_TYPE_DOUBLE:
+                return Types.DOUBLE;
+            case TSDBConstants.TSDB_DATA_TYPE_BINARY:
+                return Types.BINARY;
+            case TSDBConstants.TSDB_DATA_TYPE_TIMESTAMP:
+                return Types.TIMESTAMP;
+            case TSDBConstants.TSDB_DATA_TYPE_NCHAR:
+                return Types.NCHAR;
+        }
+        throw TSDBError.createSQLException(TSDBErrorNumbers.ERROR_UNKNOWN_SQL_TYPE_IN_TDENGINE);
+    }
+
+    public static int jdbcType2TaosType(int jdbcType) throws SQLException {
+        switch (jdbcType){
+            case Types.NULL:
+                return TSDBConstants.TSDB_DATA_TYPE_NULL;
+            case Types.BOOLEAN:
+                return TSDBConstants.TSDB_DATA_TYPE_BOOL;
+            case Types.TINYINT:
+                return TSDBConstants.TSDB_DATA_TYPE_TINYINT;
+            case Types.SMALLINT:
+                return TSDBConstants.TSDB_DATA_TYPE_SMALLINT;
+            case Types.INTEGER:
+                return TSDBConstants.TSDB_DATA_TYPE_INT;
+            case Types.BIGINT:
+                return TSDBConstants.TSDB_DATA_TYPE_BIGINT;
+            case Types.FLOAT:
+                return TSDBConstants.TSDB_DATA_TYPE_FLOAT;
+            case Types.DOUBLE:
+                return TSDBConstants.TSDB_DATA_TYPE_DOUBLE;
+            case Types.BINARY:
+                return TSDBConstants.TSDB_DATA_TYPE_BINARY;
+            case Types.TIMESTAMP:
+                return TSDBConstants.TSDB_DATA_TYPE_TIMESTAMP;
+            case Types.NCHAR:
+                return TSDBConstants.TSDB_DATA_TYPE_NCHAR;
+        }
+        throw TSDBError.createSQLException(TSDBErrorNumbers.ERROR_UNKNOWN_SQL_TYPE_IN_TDENGINE);
+    }
+
     static {
         DATATYPE_MAP = new HashMap<>();
+        DATATYPE_MAP.put(0, "NULL");
         DATATYPE_MAP.put(1, "BOOL");
         DATATYPE_MAP.put(2, "TINYINT");
         DATATYPE_MAP.put(3, "SMALLINT");
@@ -90,4 +144,8 @@ public abstract class TSDBConstants {
         DATATYPE_MAP.put(9, "TIMESTAMP");
         DATATYPE_MAP.put(10, "NCHAR");
     }
+
+    public static String jdbcType2TaosTypeName(int type) throws SQLException {
+        return DATATYPE_MAP.get(jdbcType2TaosType(type));
+    }
 }

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

@@ -18,6 +18,7 @@ public class TSDBErrorNumbers {
     public static final int ERROR_INVALID_FOR_EXECUTE = 0x230c;         //not a valid sql for execute: (SQL)
     public static final int ERROR_PARAMETER_INDEX_OUT_RANGE = 0x230d; // parameter index out of range
     public static final int ERROR_SQLCLIENT_EXCEPTION_ON_CONNECTION_CLOSED = 0x230e;    // connection already closed
+    public static final int ERROR_UNKNOWN_SQL_TYPE_IN_TDENGINE = 0x230f;        //unknown sql type in tdengine
 
     public static final int ERROR_UNKNOWN = 0x2350;    //unknown error
 
@@ -49,6 +50,7 @@ public class TSDBErrorNumbers {
         errorNumbers.add(ERROR_INVALID_FOR_EXECUTE);
         errorNumbers.add(ERROR_PARAMETER_INDEX_OUT_RANGE);
         errorNumbers.add(ERROR_SQLCLIENT_EXCEPTION_ON_CONNECTION_CLOSED);
+        errorNumbers.add(ERROR_UNKNOWN_SQL_TYPE_IN_TDENGINE);
 
         /*****************************************************/
         errorNumbers.add(ERROR_SUBSCRIBE_FAILED);

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

@@ -20,7 +20,7 @@ import java.sql.Timestamp;
 import java.sql.Types;
 import java.util.List;
 
-public class TSDBResultSetMetaData implements ResultSetMetaData {
+public class TSDBResultSetMetaData extends WrapperImpl implements ResultSetMetaData {
 
 	List<ColumnMetaData> colMetaDataList = null;
 
@@ -28,14 +28,6 @@ public class TSDBResultSetMetaData implements ResultSetMetaData {
 		this.colMetaDataList = metaDataList;
 	}
 
-	public <T> T unwrap(Class<T> iface) throws SQLException {
-		throw new SQLException(TSDBConstants.UNSUPPORTED_METHOD_EXCEPTION_MSG);
-	}
-
-	public boolean isWrapperFor(Class<?> iface) throws SQLException {
-		throw new SQLException(TSDBConstants.UNSUPPORTED_METHOD_EXCEPTION_MSG);
-	}
-
 	public int getColumnCount() throws SQLException {
 		return colMetaDataList.size();
 	}
@@ -94,7 +86,7 @@ public class TSDBResultSetMetaData implements ResultSetMetaData {
 	}
 
 	public String getSchemaName(int column) throws SQLException {
-		throw new SQLException(TSDBConstants.UNSUPPORTED_METHOD_EXCEPTION_MSG);
+		throw TSDBError.createSQLException(TSDBErrorNumbers.ERROR_UNSUPPORTED_METHOD);
 	}
 
 	public int getPrecision(int column) throws SQLException {
@@ -125,18 +117,18 @@ public class TSDBResultSetMetaData implements ResultSetMetaData {
 	}
 
 	public String getTableName(int column) throws SQLException {
-		throw new SQLException(TSDBConstants.UNSUPPORTED_METHOD_EXCEPTION_MSG);
+		throw TSDBError.createSQLException(TSDBErrorNumbers.ERROR_UNSUPPORTED_METHOD);
 	}
 
 	public String getCatalogName(int column) throws SQLException {
-		throw new SQLException(TSDBConstants.UNSUPPORTED_METHOD_EXCEPTION_MSG);
+		throw TSDBError.createSQLException(TSDBErrorNumbers.ERROR_UNSUPPORTED_METHOD);
 	}
 
 	public int getColumnType(int column) throws SQLException {
 		ColumnMetaData meta = this.colMetaDataList.get(column - 1);
 		switch (meta.getColType()) {
 		case TSDBConstants.TSDB_DATA_TYPE_BOOL:
-			return java.sql.Types.BIT;
+			return Types.BOOLEAN;
 		case TSDBConstants.TSDB_DATA_TYPE_TINYINT:
 			return java.sql.Types.TINYINT;
 		case TSDBConstants.TSDB_DATA_TYPE_SMALLINT:
@@ -150,13 +142,13 @@ public class TSDBResultSetMetaData implements ResultSetMetaData {
 		case TSDBConstants.TSDB_DATA_TYPE_DOUBLE:
 			return java.sql.Types.DOUBLE;
 		case TSDBConstants.TSDB_DATA_TYPE_BINARY:
-			return java.sql.Types.CHAR;
+			return Types.BINARY;
 		case TSDBConstants.TSDB_DATA_TYPE_TIMESTAMP:
-			return java.sql.Types.BIGINT;
+			return java.sql.Types.TIMESTAMP;
 		case TSDBConstants.TSDB_DATA_TYPE_NCHAR:
-			return java.sql.Types.CHAR;
+			return Types.NCHAR;
 		}
-		throw new SQLException(TSDBConstants.INVALID_VARIABLES);
+		throw TSDBError.createSQLException(TSDBErrorNumbers.ERROR_INVALID_VARIABLE);
 	}
 
 	public String getColumnTypeName(int column) throws SQLException {
@@ -173,7 +165,7 @@ public class TSDBResultSetMetaData implements ResultSetMetaData {
 	}
 
 	public boolean isDefinitelyWritable(int column) throws SQLException {
-		throw new SQLException(TSDBConstants.UNSUPPORTED_METHOD_EXCEPTION_MSG);
+		throw TSDBError.createSQLException(TSDBErrorNumbers.ERROR_UNSUPPORTED_METHOD);
 	}
 
 	public String getColumnClassName(int column) throws SQLException {

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

@@ -1153,11 +1153,11 @@ public class TSDBResultSetWrapper implements ResultSet {
     }
 
     public <T> T getObject(int columnIndex, Class<T> type) throws SQLException {
-        throw new SQLException(TSDBConstants.UNSUPPORTED_METHOD_EXCEPTION_MSG);
+        throw TSDBError.createSQLException(TSDBErrorNumbers.ERROR_UNSUPPORTED_METHOD);
     }
 
     public <T> T getObject(String columnLabel, Class<T> type) throws SQLException {
-        throw new SQLException(TSDBConstants.UNSUPPORTED_METHOD_EXCEPTION_MSG);
+        throw TSDBError.createSQLException(TSDBErrorNumbers.ERROR_UNSUPPORTED_METHOD);
     }
 
     @Override

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

@@ -18,10 +18,10 @@ public class RestfulResultSet extends AbstractResultSet implements ResultSet {
     private final String database;
     private final Statement statement;
     // data
-    private ArrayList<ArrayList<Object>> resultSet = new ArrayList<>();
+    private ArrayList<ArrayList<Object>> resultSet;
     // meta
-    private ArrayList<String> columnNames = new ArrayList<>();
-    private ArrayList<Field> columns = new ArrayList<>();
+    private ArrayList<String> columnNames;
+    private ArrayList<Field> columns;
     private RestfulResultSetMetaData metaData;
 
     /**
@@ -29,11 +29,36 @@ public class RestfulResultSet extends AbstractResultSet implements ResultSet {
      *
      * @param resultJson: 包含data信息的结果集，有sql返回的结果集
      ***/
-    public RestfulResultSet(String database, Statement statement, JSONObject resultJson) {
+    public RestfulResultSet(String database, Statement statement, JSONObject resultJson) throws SQLException {
         this.database = database;
         this.statement = statement;
+        // column metadata
+        JSONArray columnMeta = resultJson.getJSONArray("column_meta");
+        columnNames = new ArrayList<>();
+        columns = new ArrayList<>();
+        for (int colIndex = 0; colIndex < columnMeta.size(); colIndex++) {
+            JSONArray col = columnMeta.getJSONArray(colIndex);
+            String col_name = col.getString(0);
+            int col_type = TSDBConstants.taosType2JdbcType(col.getInteger(1));
+            int col_length = col.getInteger(2);
+            columnNames.add(col_name);
+            columns.add(new Field(col_name, col_type, col_length, ""));
+        }
+        this.metaData = new RestfulResultSetMetaData(this.database, columns, this);
+
         // row data
         JSONArray data = resultJson.getJSONArray("data");
+        resultSet = new ArrayList<>();
+        for (int rowIndex = 0; rowIndex < data.size(); rowIndex++) {
+            ArrayList row = new ArrayList();
+            JSONArray jsonRow = data.getJSONArray(rowIndex);
+            for (int colIndex = 0; colIndex < jsonRow.size(); colIndex++) {
+                row.add(parseColumnData(jsonRow, colIndex, columns.get(colIndex).type));
+            }
+            resultSet.add(row);
+        }
+
+        /*
         int columnIndex = 0;
         for (; columnIndex < data.size(); columnIndex++) {
             ArrayList oneRow = new ArrayList<>();
@@ -52,50 +77,77 @@ public class RestfulResultSet extends AbstractResultSet implements ResultSet {
             columns.add(new Field(name, "", 0, ""));
         }
         this.metaData = new RestfulResultSetMetaData(this.database, columns, this);
-    }
-
-    /**
-     * 由多个resultSet的JSON构造结果集
-     *
-     * @param resultJson: 包含data信息的结果集，有sql返回的结果集
-     * @param fieldJson:  包含多个（最多2个）meta信息的结果集，有describe xxx
-     **/
-    public RestfulResultSet(String database, Statement statement, JSONObject resultJson, List<JSONObject> fieldJson) {
-        this(database, statement, resultJson);
-        ArrayList<Field> newColumns = new ArrayList<>();
-
-        for (Field column : columns) {
-            Field field = findField(column.name, fieldJson);
-            if (field != null) {
-                newColumns.add(field);
-            } else {
-                newColumns.add(column);
-            }
-        }
-        this.columns = newColumns;
-        this.metaData = new RestfulResultSetMetaData(this.database, this.columns, this);
-    }
-
-    public Field findField(String columnName, List<JSONObject> fieldJsonList) {
-        for (JSONObject fieldJSON : fieldJsonList) {
-            JSONArray fieldDataJson = fieldJSON.getJSONArray("data");
-            for (int i = 0; i < fieldDataJson.size(); i++) {
-                JSONArray field = fieldDataJson.getJSONArray(i);
-                if (columnName.equalsIgnoreCase(field.getString(0))) {
-                    return new Field(field.getString(0), field.getString(1), field.getInteger(2), field.getString(3));
-                }
-            }
+         */
+    }
+
+    private Object parseColumnData(JSONArray row, int colIndex, int sqlType) {
+        switch (sqlType) {
+            case Types.NULL:
+                return null;
+            case Types.BOOLEAN:
+                return row.getBoolean(colIndex);
+            case Types.TINYINT:
+            case Types.SMALLINT:
+                return row.getShort(colIndex);
+            case Types.INTEGER:
+                return row.getInteger(colIndex);
+            case Types.BIGINT:
+                return row.getBigInteger(colIndex);
+            case Types.FLOAT:
+                return row.getFloat(colIndex);
+            case Types.DOUBLE:
+                return row.getDouble(colIndex);
+            case Types.TIMESTAMP:
+                return row.getTimestamp(colIndex);
+            case Types.BINARY:
+            case Types.NCHAR:
+            default:
+                return row.getString(colIndex);
         }
-        return null;
     }
 
+//    /**
+//     * 由多个resultSet的JSON构造结果集
+//     *
+//     * @param resultJson: 包含data信息的结果集，有sql返回的结果集
+//     * @param fieldJson:  包含多个（最多2个）meta信息的结果集，有describe xxx
+//     **/
+//    public RestfulResultSet(String database, Statement statement, JSONObject resultJson, List<JSONObject> fieldJson) throws SQLException {
+//        this(database, statement, resultJson);
+//        ArrayList<Field> newColumns = new ArrayList<>();
+//
+//        for (Field column : columns) {
+//            Field field = findField(column.name, fieldJson);
+//            if (field != null) {
+//                newColumns.add(field);
+//            } else {
+//                newColumns.add(column);
+//            }
+//        }
+//        this.columns = newColumns;
+//        this.metaData = new RestfulResultSetMetaData(this.database, this.columns, this);
+//    }
+
+//    public Field findField(String columnName, List<JSONObject> fieldJsonList) {
+//        for (JSONObject fieldJSON : fieldJsonList) {
+//            JSONArray fieldDataJson = fieldJSON.getJSONArray("data");
+//            for (int i = 0; i < fieldDataJson.size(); i++) {
+//                JSONArray field = fieldDataJson.getJSONArray(i);
+//                if (columnName.equalsIgnoreCase(field.getString(0))) {
+//                    return new Field(field.getString(0), field.getString(1), field.getInteger(2), field.getString(3));
+//                }
+//            }
+//        }
+//        return null;
+//    }
+
     public class Field {
         String name;
-        String type;
+        int type;
         int length;
         String note;
 
-        public Field(String name, String type, int length, String note) {
+        public Field(String name, int type, int length, String note) {
             this.name = name;
             this.type = type;
             this.length = length;

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

@@ -5,6 +5,7 @@ import com.taosdata.jdbc.TSDBConstants;
 import java.sql.ResultSetMetaData;
 import java.sql.SQLException;
 import java.sql.Timestamp;
+import java.sql.Types;
 import java.util.ArrayList;
 
 public class RestfulResultSetMetaData implements ResultSetMetaData {
@@ -53,14 +54,14 @@ public class RestfulResultSetMetaData implements ResultSetMetaData {
 
     @Override
     public boolean isSigned(int column) throws SQLException {
-        String type = this.fields.get(column - 1).type.toUpperCase();
+        int type = this.fields.get(column - 1).type;
         switch (type) {
-            case "TINYINT":
-            case "SMALLINT":
-            case "INT":
-            case "BIGINT":
-            case "FLOAT":
-            case "DOUBLE":
+            case Types.TINYINT:
+            case Types.SMALLINT:
+            case Types.INTEGER:
+            case Types.BIGINT:
+            case Types.FLOAT:
+            case Types.DOUBLE:
                 return true;
             default:
                 return false;
@@ -89,14 +90,14 @@ public class RestfulResultSetMetaData implements ResultSetMetaData {
 
     @Override
     public int getPrecision(int column) throws SQLException {
-        String type = this.fields.get(column - 1).type.toUpperCase();
+        int type = this.fields.get(column - 1).type;
         switch (type) {
-            case "FLOAT":
+            case Types.FLOAT:
                 return 5;
-            case "DOUBLE":
+            case Types.DOUBLE:
                 return 9;
-            case "BINARY":
-            case "NCHAR":
+            case Types.BINARY:
+            case Types.NCHAR:
                 return this.fields.get(column - 1).length;
             default:
                 return 0;
@@ -105,11 +106,11 @@ public class RestfulResultSetMetaData implements ResultSetMetaData {
 
     @Override
     public int getScale(int column) throws SQLException {
-        String type = this.fields.get(column - 1).type.toUpperCase();
+        int type = this.fields.get(column - 1).type;
         switch (type) {
-            case "FLOAT":
+            case Types.FLOAT:
                 return 5;
-            case "DOUBLE":
+            case Types.DOUBLE:
                 return 9;
             default:
                 return 0;
@@ -128,36 +129,13 @@ public class RestfulResultSetMetaData implements ResultSetMetaData {
 
     @Override
     public int getColumnType(int column) throws SQLException {
-        String type = this.fields.get(column - 1).type.toUpperCase();
-        switch (type) {
-            case "BOOL":
-                return java.sql.Types.BOOLEAN;
-            case "TINYINT":
-                return java.sql.Types.TINYINT;
-            case "SMALLINT":
-                return java.sql.Types.SMALLINT;
-            case "INT":
-                return java.sql.Types.INTEGER;
-            case "BIGINT":
-                return java.sql.Types.BIGINT;
-            case "FLOAT":
-                return java.sql.Types.FLOAT;
-            case "DOUBLE":
-                return java.sql.Types.DOUBLE;
-            case "BINARY":
-                return java.sql.Types.BINARY;
-            case "TIMESTAMP":
-                return java.sql.Types.TIMESTAMP;
-            case "NCHAR":
-                return java.sql.Types.NCHAR;
-        }
-        throw new SQLException(TSDBConstants.INVALID_VARIABLES);
+        return this.fields.get(column - 1).type;
     }
 
     @Override
     public String getColumnTypeName(int column) throws SQLException {
-        String type = fields.get(column - 1).type;
-        return type.toUpperCase();
+        int type = fields.get(column - 1).type;
+        return TSDBConstants.jdbcType2TaosTypeName(type);
     }
 
     @Override
@@ -177,26 +155,26 @@ public class RestfulResultSetMetaData implements ResultSetMetaData {
 
     @Override
     public String getColumnClassName(int column) throws SQLException {
-        String type = this.fields.get(column - 1).type;
+        int type = this.fields.get(column - 1).type;
         String columnClassName = "";
         switch (type) {
-            case "BOOL":
+            case Types.BOOLEAN:
                 return Boolean.class.getName();
-            case "TINYINT":
-            case "SMALLINT":
+            case Types.TINYINT:
+            case Types.SMALLINT:
                 return Short.class.getName();
-            case "INT":
+            case Types.INTEGER:
                 return Integer.class.getName();
-            case "BIGINT":
+            case Types.BIGINT:
                 return Long.class.getName();
-            case "FLOAT":
+            case Types.FLOAT:
                 return Float.class.getName();
-            case "DOUBLE":
+            case Types.DOUBLE:
                 return Double.class.getName();
-            case "TIMESTAMP":
+            case Types.TIMESTAMP:
                 return Timestamp.class.getName();
-            case "BINARY":
-            case "NCHAR":
+            case Types.BINARY:
+            case Types.NCHAR:
                 return String.class.getName();
         }
         return columnClassName;

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

@@ -151,22 +151,21 @@ public class RestfulStatement extends AbstractStatement {
             throw new SQLException(TSDBConstants.WrapErrMsg("SQL execution error: " + resultJson.getString("desc") + "\n" + "error code: " + resultJson.getString("code")));
         }
         // parse table name from sql
-        String[] tableIdentifiers = parseTableIdentifier(sql);
-        if (tableIdentifiers != null) {
-            List<JSONObject> fieldJsonList = new ArrayList<>();
-            for (String tableIdentifier : tableIdentifiers) {
-                // field meta
-                String fields = HttpClientPoolUtil.execute(url, "DESCRIBE " + tableIdentifier);
-                JSONObject fieldJson = JSON.parseObject(fields);
-                if (fieldJson.getString("status").equals("error")) {
-                    throw new SQLException(TSDBConstants.WrapErrMsg("SQL execution error: " + fieldJson.getString("desc") + "\n" + "error code: " + fieldJson.getString("code")));
-                }
-                fieldJsonList.add(fieldJson);
-            }
-            this.resultSet = new RestfulResultSet(database, this, resultJson, fieldJsonList);
-        } else {
-            this.resultSet = new RestfulResultSet(database, this, resultJson);
-        }
+//        String[] tableIdentifiers = parseTableIdentifier(sql);
+//        if (tableIdentifiers != null) {
+//            List<JSONObject> fieldJsonList = new ArrayList<>();
+//            for (String tableIdentifier : tableIdentifiers) {
+//                String fields = HttpClientPoolUtil.execute(url, "DESCRIBE " + tableIdentifier);
+//                JSONObject fieldJson = JSON.parseObject(fields);
+//                if (fieldJson.getString("status").equals("error")) {
+//                    throw new SQLException(TSDBConstants.WrapErrMsg("SQL execution error: " + fieldJson.getString("desc") + "\n" + "error code: " + fieldJson.getString("code")));
+//                }
+//                fieldJsonList.add(fieldJson);
+//            }
+//            this.resultSet = new RestfulResultSet(database, this, resultJson, fieldJsonList);
+//        } else {
+        this.resultSet = new RestfulResultSet(database, this, resultJson);
+//        }
         this.affectedRows = 0;
         return resultSet;
     }
@@ -201,7 +200,7 @@ public class RestfulStatement extends AbstractStatement {
     @Override
     public ResultSet getResultSet() throws SQLException {
         if (isClosed())
-            throw new SQLException(TSDBConstants.STATEMENT_CLOSED);
+            throw TSDBError.createSQLException(TSDBErrorNumbers.ERROR_STATEMENT_CLOSED);
         return resultSet;
     }
 

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

@@ -11,8 +11,8 @@ import java.sql.*;
 
 @FixMethodOrder(MethodSorters.NAME_ASCENDING)
 public class SQLTest {
-    private static final String host = "127.0.0.1";
-    //    private static final String host = "master";
+//    private static final String host = "127.0.0.1";
+        private static final String host = "master";
     private static Connection connection;
 
     @Test
@@ -323,6 +323,18 @@ public class SQLTest {
         SQLExecutor.executeQuery(connection, sql);
     }
 
+    @Test
+    public void testCase052() {
+        String sql = "select server_status()";
+        SQLExecutor.executeQuery(connection, sql);
+    }
+
+    @Test
+    public void testCase053() {
+        String sql = "select avg(cpu_taosd), avg(cpu_system), max(cpu_cores), avg(mem_taosd), avg(mem_system), max(mem_total), avg(disk_used), max(disk_total), avg(band_speed), avg(io_read), avg(io_write), sum(req_http), sum(req_select), sum(req_insert) from log.dn1 where ts> now - 60m and ts<= now interval(1m) fill(value, 0)";
+        SQLExecutor.executeQuery(connection, sql);
+    }
+
     @BeforeClass
     public static void before() throws ClassNotFoundException, SQLException {
         Class.forName("com.taosdata.jdbc.rs.RestfulDriver");

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

@@ -3,17 +3,15 @@ package com.taosdata.taosdemo;
 import com.taosdata.taosdemo.components.DataSourceFactory;
 import com.taosdata.taosdemo.components.JdbcTaosdemoConfig;
 import com.taosdata.taosdemo.domain.SuperTableMeta;
-import com.taosdata.taosdemo.service.*;
+import com.taosdata.taosdemo.service.DatabaseService;
+import com.taosdata.taosdemo.service.SqlExecuteTask;
+import com.taosdata.taosdemo.service.SubTableService;
+import com.taosdata.taosdemo.service.SuperTableService;
 import com.taosdata.taosdemo.service.data.SuperTableMetaGenerator;
-import com.taosdata.taosdemo.utils.Printer;
 import org.apache.log4j.Logger;
 
 import javax.sql.DataSource;
 import java.io.IOException;
-import java.sql.Connection;
-import java.sql.ResultSet;
-import java.sql.SQLException;
-import java.sql.Statement;
 import java.time.Duration;
 import java.time.Instant;
 import java.util.Arrays;
@@ -35,7 +33,7 @@ public class TaosDemoApplication {
         // 初始化
         final DataSource dataSource = DataSourceFactory.getInstance(config.host, config.port, config.user, config.password);
         if (config.executeSql != null && !config.executeSql.isEmpty() && !config.executeSql.replaceAll("\\s", "").isEmpty()) {
-            Thread task = new Thread(new SqlExecuteor(dataSource, config.executeSql));
+            Thread task = new Thread(new SqlExecuteTask(dataSource, config.executeSql));
             task.start();
             try {
                 task.join();

tests/examples/JDBC/taosdemo/src/main/java/com/taosdata/taosdemo/service/SqlExecuteor.java → tests/examples/JDBC/taosdemo/src/main/java/com/taosdata/taosdemo/service/SqlExecuteTask.java

@@ -8,11 +8,11 @@ import java.sql.ResultSet;
 import java.sql.SQLException;
 import java.sql.Statement;
 
-public class SqlExecuteor implements Runnable {
+public class SqlExecuteTask implements Runnable {
     private final DataSource dataSource;
     private final String sql;
 
-    public SqlExecuteor(DataSource dataSource, String sql) {
+    public SqlExecuteTask(DataSource dataSource, String sql) {
         this.dataSource = dataSource;
         this.sql = sql;
     }