diff --git a/src/connector/jdbc/pom.xml b/src/connector/jdbc/pom.xml
index 99409fe27722fb43f9d9fa50a0c0f17b5c1f76be..3b62f66d2ec88002d2f749166fb00bff670617ee 100755
--- a/src/connector/jdbc/pom.xml
+++ b/src/connector/jdbc/pom.xml
@@ -3,7 +3,7 @@
     <modelVersion>4.0.0</modelVersion>
     <groupId>com.taosdata.jdbc</groupId>
     <artifactId>taos-jdbcdriver</artifactId>
-    <version>2.0.0</version>
+    <version>2.0.8</version>
     <packaging>jar</packaging>
     <name>JDBCDriver</name>
     <url>https://github.com/taosdata/TDengine/tree/master/src/connector/jdbc</url>
diff --git a/src/connector/jdbc/src/main/java/com/taosdata/jdbc/TSDBDatabaseMetaData.java b/src/connector/jdbc/src/main/java/com/taosdata/jdbc/TSDBDatabaseMetaData.java
index e5515c24b7a298f0d82f5ad5f880fc1a166f9a3f..c1d9d2af8e5a5c24dcfed6039e3ce06530b95276 100644
--- a/src/connector/jdbc/src/main/java/com/taosdata/jdbc/TSDBDatabaseMetaData.java
+++ b/src/connector/jdbc/src/main/java/com/taosdata/jdbc/TSDBDatabaseMetaData.java
@@ -587,7 +587,6 @@ public class TSDBDatabaseMetaData implements java.sql.DatabaseMetaData {
     public ResultSet getColumns(String catalog, String schemaPattern, String tableNamePattern, String columnNamePattern)
             throws SQLException {
 
-
         /** add by zyyang **********/
         Statement stmt = null;
         if (null != conn && !conn.isClosed()) {
diff --git a/tests/examples/JDBC/JDBCDemo/src/main/java/com/taosdata/example/jdbcTaosdemo/utils/SqlSpeller.java b/tests/examples/JDBC/JDBCDemo/src/main/java/com/taosdata/example/jdbcTaosdemo/utils/SqlSpeller.java
index c20e12c04864ee2c3ce05b0aaf4211f5b182f4b9..b4a79e9eba47cc947d822b645d0ae1f9952f08f0 100644
--- a/tests/examples/JDBC/JDBCDemo/src/main/java/com/taosdata/example/jdbcTaosdemo/utils/SqlSpeller.java
+++ b/tests/examples/JDBC/JDBCDemo/src/main/java/com/taosdata/example/jdbcTaosdemo/utils/SqlSpeller.java
@@ -113,7 +113,7 @@ public class SqlSpeller {
     }
 
     public static String selectLastOneMonth(String dbName, String stbName) {
-        return "select * from " + dbName + "." + stbName + " where ts >= now - 1M";
+        return "select * from " + dbName + "." + stbName + " where ts >= now - 1n";
     }
 
     public static String selectLastOneYear(String dbName, String stbName) {