diff --git a/src/main/java/com/chaozhanggui/system/cashierservice/dao/TbShopOpenIdMapper.java b/src/main/java/com/chaozhanggui/system/cashierservice/dao/TbShopOpenIdMapper.java
index 20f32d9..b1a1f9b 100644
--- a/src/main/java/com/chaozhanggui/system/cashierservice/dao/TbShopOpenIdMapper.java
+++ b/src/main/java/com/chaozhanggui/system/cashierservice/dao/TbShopOpenIdMapper.java
@@ -26,7 +26,7 @@ public interface TbShopOpenIdMapper {
 
     int updateByPrimaryKey(TbShopOpenId record);
 
-    @Select("select * from tb_shop_open_id where open_id=#{openId} and shop_id=#{shopId}")
+    @Select("select * from tb_shop_open_id where open_id=#{openId} and shop_id=#{shopId} limit 1")
     TbShopOpenId countByOpenId(@Param("openId") String openId, @Param("shopId") Integer shopId);
 
     @Select("select * from tb_shop_open_id where shop_id=#{shopId} and status=1")