diff --git a/chat2db-server/chat2db-plugins/chat2db-clickhouse/src/main/java/ai/chat2db/plugin/clickhouse/ClickHouseDBManage.java b/chat2db-server/chat2db-plugins/chat2db-clickhouse/src/main/java/ai/chat2db/plugin/clickhouse/ClickHouseDBManage.java
index d05b760b..1af8b639 100644
--- a/chat2db-server/chat2db-plugins/chat2db-clickhouse/src/main/java/ai/chat2db/plugin/clickhouse/ClickHouseDBManage.java
+++ b/chat2db-server/chat2db-plugins/chat2db-clickhouse/src/main/java/ai/chat2db/plugin/clickhouse/ClickHouseDBManage.java
@@ -96,4 +96,13 @@ public class ClickHouseDBManage extends DefaultDBManage implements DBManage {
     }
 
 
+    @Override
+    public void copyTable(Connection connection, String databaseName, String schemaName, String tableName, String newTableName,boolean copyData) throws SQLException {
+        String sql = "CREATE TABLE " + newTableName + " AS " + tableName + "";
+        SQLExecutor.getInstance().execute(connection, sql, resultSet -> null);
+        if(copyData){
+            sql = "INSERT INTO " + newTableName + " SELECT * FROM " + tableName;
+            SQLExecutor.getInstance().execute(connection, sql, resultSet -> null);
+        }
+    }
 }
diff --git a/chat2db-server/chat2db-plugins/chat2db-clickhouse/src/main/java/ai/chat2db/plugin/clickhouse/ClickHouseMetaData.java b/chat2db-server/chat2db-plugins/chat2db-clickhouse/src/main/java/ai/chat2db/plugin/clickhouse/ClickHouseMetaData.java
index b13ce6f9..6ebdd82b 100644
--- a/chat2db-server/chat2db-plugins/chat2db-clickhouse/src/main/java/ai/chat2db/plugin/clickhouse/ClickHouseMetaData.java
+++ b/chat2db-server/chat2db-plugins/chat2db-clickhouse/src/main/java/ai/chat2db/plugin/clickhouse/ClickHouseMetaData.java
@@ -81,7 +81,7 @@ public class ClickHouseMetaData extends DefaultMetaService implements MetaData {
     @Override
     public String tableDDL(Connection connection, @NotEmpty String databaseName, String schemaName,
                            @NotEmpty String tableName) {
-        String sql = "SHOW CREATE TABLE " + format(databaseName) + "."
+        String sql = "SHOW CREATE TABLE " + format(schemaName) + "."
                 + format(tableName);
         return SQLExecutor.getInstance().execute(connection, sql, resultSet -> {
             if (resultSet.next()) {
@@ -112,7 +112,7 @@ public class ClickHouseMetaData extends DefaultMetaService implements MetaData {
     @Override
     public List<Trigger> triggers(Connection connection, String databaseName, String schemaName) {
         List<Trigger> triggers = new ArrayList<>();
-        String sql = String.format(TRIGGER_SQL_LIST, databaseName);
+        String sql = String.format(TRIGGER_SQL_LIST, schemaName);
         return SQLExecutor.getInstance().execute(connection, sql, resultSet -> {
             while (resultSet.next()) {
                 Trigger trigger = new Trigger();
@@ -145,7 +145,7 @@ public class ClickHouseMetaData extends DefaultMetaService implements MetaData {
     @Override
     public Procedure procedure(Connection connection, @NotEmpty String databaseName, String schemaName,
                                String procedureName) {
-        String sql = String.format(ROUTINES_SQL, "PROCEDURE", databaseName, procedureName);
+        String sql = String.format(ROUTINES_SQL, "PROCEDURE", schemaName, procedureName);
         return SQLExecutor.getInstance().execute(connection, sql, resultSet -> {
             Procedure procedure = new Procedure();
             procedure.setDatabaseName(databaseName);
@@ -235,7 +235,7 @@ public class ClickHouseMetaData extends DefaultMetaService implements MetaData {
     @Override
     public List<TableIndex> indexes(Connection connection, String databaseName, String schemaName, String tableName) {
         StringBuilder queryBuf = new StringBuilder("SHOW INDEX FROM ");
-        queryBuf.append("`").append(tableName).append("`");
+        queryBuf.append("`").append(schemaName).append("`");
         queryBuf.append(" FROM ");
         queryBuf.append("`").append(databaseName).append("`");
         return SQLExecutor.getInstance().execute(connection, queryBuf.toString(), resultSet -> {
@@ -298,11 +298,8 @@ public class ClickHouseMetaData extends DefaultMetaService implements MetaData {
 
     @Override
     public String getMetaDataName(String... names) {
-        return Arrays.stream(names)
-                .skip(1) // 跳过第一个名称
-                .filter(StringUtils::isNotBlank)
-                .map(name -> "`" + name + "`")
-                .collect(Collectors.joining("."));
+        return Arrays.stream(names).filter(name -> StringUtils.isNotBlank(name)).map(name -> "`" + name + "`").collect(Collectors.joining("."));
+
     }
 
 
diff --git a/chat2db-server/chat2db-plugins/chat2db-db2/src/main/java/ai/chat2db/plugin/db2/DB2DBManage.java b/chat2db-server/chat2db-plugins/chat2db-db2/src/main/java/ai/chat2db/plugin/db2/DB2DBManage.java
index 39114b59..5f079170 100644
--- a/chat2db-server/chat2db-plugins/chat2db-db2/src/main/java/ai/chat2db/plugin/db2/DB2DBManage.java
+++ b/chat2db-server/chat2db-plugins/chat2db-db2/src/main/java/ai/chat2db/plugin/db2/DB2DBManage.java
@@ -111,4 +111,14 @@ public class DB2DBManage extends DefaultDBManage implements DBManage {
         String sql = "DROP TABLE " + tableName;
         SQLExecutor.getInstance().execute(connection, sql, resultSet -> null);
     }
+
+    @Override
+    public void copyTable(Connection connection, String databaseName, String schemaName, String tableName, String newTableName,boolean copyData) throws SQLException {
+        String sql = "CREATE TABLE " + newTableName + " LIKE " + tableName + " INCLUDING INDEXES";
+        SQLExecutor.getInstance().execute(connection, sql, resultSet -> null);
+        if(copyData){
+            sql = "INSERT INTO " + newTableName + " SELECT * FROM " + tableName;
+            SQLExecutor.getInstance().execute(connection, sql, resultSet -> null);
+        }
+    }
 }
diff --git a/chat2db-server/chat2db-plugins/chat2db-hive/src/main/java/ai/chat2db/plugin/hive/HiveDBManage.java b/chat2db-server/chat2db-plugins/chat2db-hive/src/main/java/ai/chat2db/plugin/hive/HiveDBManage.java
index cb3d7a3f..92e1bbb6 100644
--- a/chat2db-server/chat2db-plugins/chat2db-hive/src/main/java/ai/chat2db/plugin/hive/HiveDBManage.java
+++ b/chat2db-server/chat2db-plugins/chat2db-hive/src/main/java/ai/chat2db/plugin/hive/HiveDBManage.java
@@ -28,4 +28,14 @@ public class HiveDBManage extends DefaultDBManage implements DBManage {
         String sql = "drop table if exists " +tableName;
         SQLExecutor.getInstance().execute(connection,sql, resultSet -> null);
     }
+
+    @Override
+    public void copyTable(Connection connection, String databaseName, String schemaName, String tableName, String newTableName,boolean copyData) throws SQLException {
+        String sql = "CREATE TABLE " + newTableName + "LIKE " + tableName;
+        SQLExecutor.getInstance().execute(connection, sql, resultSet -> null);
+        if(copyData){
+            sql = "INSERT INTO " + newTableName + " SELECT * FROM " + tableName;
+            SQLExecutor.getInstance().execute(connection, sql, resultSet -> null);
+        }
+    }
 }
diff --git a/chat2db-server/chat2db-plugins/chat2db-kingbase/src/main/java/ai/chat2db/plugin/kingbase/KingBaseDBManage.java b/chat2db-server/chat2db-plugins/chat2db-kingbase/src/main/java/ai/chat2db/plugin/kingbase/KingBaseDBManage.java
index 076d7214..42db2114 100644
--- a/chat2db-server/chat2db-plugins/chat2db-kingbase/src/main/java/ai/chat2db/plugin/kingbase/KingBaseDBManage.java
+++ b/chat2db-server/chat2db-plugins/chat2db-kingbase/src/main/java/ai/chat2db/plugin/kingbase/KingBaseDBManage.java
@@ -1,6 +1,7 @@
 package ai.chat2db.plugin.kingbase;
 
 import java.sql.Connection;
+import java.sql.SQLException;
 
 import ai.chat2db.spi.DBManage;
 import ai.chat2db.spi.jdbc.DefaultDBManage;
@@ -64,4 +65,15 @@ public class KingBaseDBManage extends DefaultDBManage implements DBManage {
         String sql = "drop table if exists " +tableName;
         SQLExecutor.getInstance().execute(connection,sql, resultSet -> null);
     }
+
+    @Override
+    public void copyTable(Connection connection, String databaseName, String schemaName, String tableName, String newTableName,boolean copyData) throws SQLException {
+        String sql = "";
+        if(copyData){
+            sql = "CREATE TABLE " + newTableName + " AS TABLE " + tableName + " WITH DATA";
+        }else {
+            sql = "CREATE TABLE " + newTableName + " AS TABLE " + tableName + " WITH NO DATA";
+        }
+        SQLExecutor.getInstance().execute(connection, sql, resultSet -> null);
+    }
 }
diff --git a/chat2db-server/chat2db-plugins/chat2db-oracle/src/main/java/ai/chat2db/plugin/oracle/OracleDBManage.java b/chat2db-server/chat2db-plugins/chat2db-oracle/src/main/java/ai/chat2db/plugin/oracle/OracleDBManage.java
index 3554eb7a..c2d9af99 100644
--- a/chat2db-server/chat2db-plugins/chat2db-oracle/src/main/java/ai/chat2db/plugin/oracle/OracleDBManage.java
+++ b/chat2db-server/chat2db-plugins/chat2db-oracle/src/main/java/ai/chat2db/plugin/oracle/OracleDBManage.java
@@ -184,4 +184,15 @@ public class OracleDBManage extends DefaultDBManage implements DBManage {
         }
     }
 
+    @Override
+    public void copyTable(Connection connection, String databaseName, String schemaName, String tableName, String newTableName,boolean copyData) throws SQLException {
+        String sql = "";
+        if(copyData){
+            sql = "CREATE TABLE " + newTableName + " AS SELECT * FROM " + tableName;
+        }else {
+            sql = "CREATE TABLE " + newTableName + " AS SELECT * FROM " + tableName + " WHERE 1=0";
+        }
+        SQLExecutor.getInstance().execute(connection, sql, resultSet -> null);
+    }
+
 }
diff --git a/chat2db-server/chat2db-plugins/chat2db-postgresql/src/main/java/ai/chat2db/plugin/postgresql/PostgreSQLDBManage.java b/chat2db-server/chat2db-plugins/chat2db-postgresql/src/main/java/ai/chat2db/plugin/postgresql/PostgreSQLDBManage.java
index d09c5c03..d8411b91 100644
--- a/chat2db-server/chat2db-plugins/chat2db-postgresql/src/main/java/ai/chat2db/plugin/postgresql/PostgreSQLDBManage.java
+++ b/chat2db-server/chat2db-plugins/chat2db-postgresql/src/main/java/ai/chat2db/plugin/postgresql/PostgreSQLDBManage.java
@@ -159,4 +159,15 @@ public class PostgreSQLDBManage extends DefaultDBManage implements DBManage {
         SQLExecutor.getInstance().execute(connection, sql, resultSet -> null);
     }
 
+    @Override
+    public void copyTable(Connection connection, String databaseName, String schemaName, String tableName, String newTableName,boolean copyData) throws SQLException {
+        String sql = "";
+        if(copyData){
+            sql = "CREATE TABLE " + newTableName + " AS TABLE " + tableName + " WITH DATA";
+        }else {
+            sql = "CREATE TABLE " + newTableName + " AS TABLE " + tableName + " WITH NO DATA";
+        }
+        SQLExecutor.getInstance().execute(connection, sql, resultSet -> null);
+    }
+
 }
diff --git a/chat2db-server/chat2db-plugins/chat2db-sqlserver/src/main/java/ai/chat2db/plugin/sqlserver/SqlServerDBManage.java b/chat2db-server/chat2db-plugins/chat2db-sqlserver/src/main/java/ai/chat2db/plugin/sqlserver/SqlServerDBManage.java
index 5b3901ee..36331e70 100644
--- a/chat2db-server/chat2db-plugins/chat2db-sqlserver/src/main/java/ai/chat2db/plugin/sqlserver/SqlServerDBManage.java
+++ b/chat2db-server/chat2db-plugins/chat2db-sqlserver/src/main/java/ai/chat2db/plugin/sqlserver/SqlServerDBManage.java
@@ -203,4 +203,15 @@ public class SqlServerDBManage extends DefaultDBManage implements DBManage {
             throw new RuntimeException(e);
         }
     }
+
+    @Override
+    public void copyTable(Connection connection, String databaseName, String schemaName, String tableName, String newTableName,boolean copyData) throws SQLException {
+        String sql = "";
+        if(copyData){
+            sql = "SELECT * INTO " + newTableName + " FROM " + tableName;
+        }else {
+            sql = "SELECT * INTO " + newTableName + " FROM " + tableName + " WHERE 1=0";
+        }
+        SQLExecutor.getInstance().execute(connection, sql, resultSet -> null);
+    }
 }
diff --git a/chat2db-server/chat2db-spi/src/main/java/ai/chat2db/spi/DBManage.java b/chat2db-server/chat2db-spi/src/main/java/ai/chat2db/spi/DBManage.java
index 343e4b52..e2410c46 100644
--- a/chat2db-server/chat2db-spi/src/main/java/ai/chat2db/spi/DBManage.java
+++ b/chat2db-server/chat2db-spi/src/main/java/ai/chat2db/spi/DBManage.java
@@ -140,4 +140,27 @@ public interface DBManage {
      * @return
      */
     void exportTable(Connection connection, String databaseName, String schemaName,String tableName,AsyncContext asyncContext) throws SQLException;
+
+
+    /**
+     * truncate table
+     * @param connection
+     * @param databaseName
+     * @param schemaName
+     * @param tableName
+     * @throws SQLException
+     */
+    void truncateTable(Connection connection, String databaseName, String schemaName, String tableName)throws SQLException;
+
+
+    /**
+     * copy table
+     *
+     * @param databaseName
+     * @param schemaName
+     * @param tableName
+     * @param newTableName
+     * @return
+     */
+    void copyTable(Connection connection, String databaseName, String schemaName, String tableName, String newTableName,boolean copyData) throws SQLException;
 }
\ No newline at end of file
diff --git a/chat2db-server/chat2db-spi/src/main/java/ai/chat2db/spi/jdbc/DefaultDBManage.java b/chat2db-server/chat2db-spi/src/main/java/ai/chat2db/spi/jdbc/DefaultDBManage.java
index 3c41ee03..da2bd198 100644
--- a/chat2db-server/chat2db-spi/src/main/java/ai/chat2db/spi/jdbc/DefaultDBManage.java
+++ b/chat2db-server/chat2db-spi/src/main/java/ai/chat2db/spi/jdbc/DefaultDBManage.java
@@ -38,15 +38,15 @@ public class DefaultDBManage implements DBManage {
 
     protected static final String TABLE_TITLE = DIVIDING_LINE + NEW_LINE + "-- Table structure for table %s" + NEW_LINE + DIVIDING_LINE;
 
-    protected static final String VIEW_TITLE =  DIVIDING_LINE + NEW_LINE +"-- View structure for view %s"+ NEW_LINE + DIVIDING_LINE;
+    protected static final String VIEW_TITLE = DIVIDING_LINE + NEW_LINE + "-- View structure for view %s" + NEW_LINE + DIVIDING_LINE;
 
-    protected static final String FUNCTION_TITLE =  DIVIDING_LINE + NEW_LINE +"-- Function structure for function %s"+ NEW_LINE + DIVIDING_LINE;
+    protected static final String FUNCTION_TITLE = DIVIDING_LINE + NEW_LINE + "-- Function structure for function %s" + NEW_LINE + DIVIDING_LINE;
 
-    protected static final String TRIGGER_TITLE = DIVIDING_LINE + NEW_LINE + "-- Trigger structure for trigger %s"+ NEW_LINE + DIVIDING_LINE;
+    protected static final String TRIGGER_TITLE = DIVIDING_LINE + NEW_LINE + "-- Trigger structure for trigger %s" + NEW_LINE + DIVIDING_LINE;
 
-    protected static final String PROCEDURE_TITLE = DIVIDING_LINE + NEW_LINE + "-- Procedure structure for procedure %s"+ NEW_LINE + DIVIDING_LINE;
+    protected static final String PROCEDURE_TITLE = DIVIDING_LINE + NEW_LINE + "-- Procedure structure for procedure %s" + NEW_LINE + DIVIDING_LINE;
 
-    private static final String RECORD_TITLE =  DIVIDING_LINE + NEW_LINE +"-- Records of %s"+ NEW_LINE + DIVIDING_LINE;
+    private static final String RECORD_TITLE = DIVIDING_LINE + NEW_LINE + "-- Records of %s" + NEW_LINE + DIVIDING_LINE;
 
 
     @Override
@@ -179,6 +179,23 @@ public class DefaultDBManage implements DBManage {
 
     }
 
+    @Override
+    public void truncateTable(Connection connection, String databaseName, String schemaName, String tableName) throws SQLException {
+        String sql = "TRUNCATE TABLE " + tableName ;
+        SQLExecutor.getInstance().execute(connection, sql, resultSet -> null);
+    }
+
+    @Override
+    public void copyTable(Connection connection, String databaseName, String schemaName, String tableName, String newTableName,boolean copyData) throws SQLException {
+        String sql = "";
+        if(copyData){
+             sql = "CREATE TABLE " + newTableName + " AS SELECT * FROM " + tableName;
+        }else {
+            sql = "CREATE TABLE " + newTableName + " AS SELECT * FROM " + tableName + " WHERE 1=0";
+        }
+        SQLExecutor.getInstance().execute(connection, sql, resultSet -> null);
+    }
+
 //    public void exportDatabaseData(Connection connection, String databaseName, String schemaName, String tableName, AsyncContext asyncContext) throws SQLException {
 //        exportTableData(connection, databaseName, schemaName, tableName, asyncContext);
 //    }