diff --git a/fe/fe-core/src/main/java/org/apache/doris/datasource/jdbc/client/JdbcMySQLClient.java b/fe/fe-core/src/main/java/org/apache/doris/datasource/jdbc/client/JdbcMySQLClient.java
index 7004309d2d..a58ac1a350 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/datasource/jdbc/client/JdbcMySQLClient.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/datasource/jdbc/client/JdbcMySQLClient.java
@@ -400,7 +400,8 @@ public class JdbcMySQLClient extends JdbcClient {
                 return ScalarType.createDateV2Type();
             case "DATETIME":
             case "DATETIMEV2": {
-                int scale = Integer.parseInt(upperType.substring(openParen + 1, upperType.length() - 1));
+                int scale = (openParen == -1) ? 6
+                        : Integer.parseInt(upperType.substring(openParen + 1, upperType.length() - 1));
                 if (scale > 6) {
                     scale = 6;
                 }