diff --git a/src/com/wentch/redkale/source/DataJDBCSource.java b/src/com/wentch/redkale/source/DataJDBCSource.java
index e51a35322..bb9cbd635 100644
--- a/src/com/wentch/redkale/source/DataJDBCSource.java
+++ b/src/com/wentch/redkale/source/DataJDBCSource.java
@@ -1017,17 +1017,17 @@ public final class DataJDBCSource implements DataSource {
 
     //-----------------------list set----------------------------
     @Override
-    public <T, V> Set<V> queryColumnSet(String selectedColumn, Class<T> clazz, String column, Serializable key) {
+    public <T, V> HashSet<V> queryColumnSet(String selectedColumn, Class<T> clazz, String column, Serializable key) {
         return queryColumnSet(selectedColumn, clazz, FilterNode.create(column, key));
     }
 
     @Override
-    public <T, V> Set<V> queryColumnSet(String selectedColumn, Class<T> clazz, FilterBean bean) {
+    public <T, V> HashSet<V> queryColumnSet(String selectedColumn, Class<T> clazz, FilterBean bean) {
         return new LinkedHashSet<>(queryColumnList(selectedColumn, clazz, bean));
     }
 
     @Override
-    public <T, V> Set<V> queryColumnSet(String selectedColumn, Class<T> clazz, FilterNode node) {
+    public <T, V> HashSet<V> queryColumnSet(String selectedColumn, Class<T> clazz, FilterNode node) {
         return new LinkedHashSet<>(queryColumnList(selectedColumn, clazz, node));
     }
 
diff --git a/src/com/wentch/redkale/source/DataSource.java b/src/com/wentch/redkale/source/DataSource.java
index 2bebbcae6..189571012 100644
--- a/src/com/wentch/redkale/source/DataSource.java
+++ b/src/com/wentch/redkale/source/DataSource.java
@@ -151,11 +151,11 @@ public interface DataSource {
      * @param key
      * @return
      */
-    public <T, V> Set<V> queryColumnSet(String selectedColumn, Class<T> clazz, String column, Serializable key);
+    public <T, V> HashSet<V> queryColumnSet(String selectedColumn, Class<T> clazz, String column, Serializable key);
 
-    public <T, V> Set<V> queryColumnSet(String selectedColumn, Class<T> clazz, FilterNode node);
+    public <T, V> HashSet<V> queryColumnSet(String selectedColumn, Class<T> clazz, FilterNode node);
 
-    public <T, V> Set<V> queryColumnSet(String selectedColumn, Class<T> clazz, FilterBean bean);
+    public <T, V> HashSet<V> queryColumnSet(String selectedColumn, Class<T> clazz, FilterBean bean);
 
     public <T, V> List<V> queryColumnList(String selectedColumn, Class<T> clazz, String column, Serializable key);