diff --git a/springboot-web/src/main/java/com/tiesheng/core/pojos/DaoBase.java b/springboot-web/src/main/java/com/tiesheng/core/pojos/DaoBase.java
index 285242e..f4c3df9 100644
--- a/springboot-web/src/main/java/com/tiesheng/core/pojos/DaoBase.java
+++ b/springboot-web/src/main/java/com/tiesheng/core/pojos/DaoBase.java
@@ -9,6 +9,12 @@ import java.util.Date;
 
 public class DaoBase {
 
+    public static final String ID = "id";
+    public static final String CREATE_TIME = "create_time";
+    public static final String UPDATE_TIME = "updateTime";
+    public static final String IS_DELETED = "isDeleted";
+    public static final String LIMIT_1 = "limit 1";
+
     @TableId(value = "id", type = IdType.ASSIGN_ID)
     private String id;