diff --git a/src/main/java/org/teasoft/bee/osql/BeeSql.java b/src/main/java/org/teasoft/bee/osql/BeeSql.java
index a6d89c80199f57c7ff3136bb48255a8d3267cc77..b7a83d6b7b735fb5b16072883694351ca6484fb8 100644
--- a/src/main/java/org/teasoft/bee/osql/BeeSql.java
+++ b/src/main/java/org/teasoft/bee/osql/BeeSql.java
@@ -17,6 +17,7 @@
 
 package org.teasoft.bee.osql;
 
+import java.sql.ResultSet;
 import java.util.List;
 import java.util.Map;
 
@@ -116,4 +117,12 @@ public interface BeeSql {
 	 * @since 1.9
 	 */
 	public List<Map<String,Object>> selectMapList(String sql);
+	
+	/**
+	 * 
+	 * 使用完返回的ResultSet结果后,要调用HoneyContext.clearConnForSelectRs()关闭连接.
+	 * @param sql
+	 * @return
+	 */
+	public ResultSet selectRs(String sql);
 }
diff --git a/src/main/java/org/teasoft/bee/sharding/ShardingSortStruct.java b/src/main/java/org/teasoft/bee/sharding/ShardingSortStruct.java
index 2793947f05062e7fb9520d7ef970586e18e49586..6b7f7d8b2b65fa789c4882d74250fbef50c62736 100644
--- a/src/main/java/org/teasoft/bee/sharding/ShardingSortStruct.java
+++ b/src/main/java/org/teasoft/bee/sharding/ShardingSortStruct.java
@@ -33,15 +33,15 @@ import org.teasoft.bee.osql.OrderType;
  */
 public class ShardingSortStruct {
 
-	private String orderSql;
+	private String orderSql;  //改写成union all时用.
 	private String orderFields[];
 	private OrderType orderTypes[];
 
 //	以下5个属性用于处理:
 //	public List<String[]> select(String sql)
 
-	// 排序顺序与orderFields[]对应.
-	private String type[];
+	// 排列顺序与orderFields[]对应.
+	private String type[]; //Number,String...
 	private boolean nullFirst[];
 	private boolean caseSensitive[];
 	// the field value in the select column index