diff --git a/data-providers/data-provider-base/src/main/java/datart/data/provider/jdbc/DataTypeUtils.java b/data-providers/data-provider-base/src/main/java/datart/data/provider/jdbc/DataTypeUtils.java
index 60d5aec70..1953b74aa 100644
--- a/data-providers/data-provider-base/src/main/java/datart/data/provider/jdbc/DataTypeUtils.java
+++ b/data-providers/data-provider-base/src/main/java/datart/data/provider/jdbc/DataTypeUtils.java
@@ -58,6 +58,9 @@ public static ValueType jdbcType2DataType(int jdbcType) {
         } else {
             family = sqlTypeName.getFamily();
         }
+        if(family == null) {
+            return ValueType.STRING;
+        }
         switch (family) {
             case NUMERIC:
                 return ValueType.NUMERIC;