diff --git a/Hadoop/ZKLT.Hadoop.Model/HDP_WhereType.cs b/Hadoop/ZKLT.Hadoop.Model/HDP_WhereType.cs
index 96f23aa..481eca6 100644
--- a/Hadoop/ZKLT.Hadoop.Model/HDP_WhereType.cs
+++ b/Hadoop/ZKLT.Hadoop.Model/HDP_WhereType.cs
@@ -21,5 +21,7 @@ namespace ZKLT.Hadoop.Model
         public const string MORETHEN = ">=";
 
         public const string LESSTHEN = "<=";
+
+        public const string IN = "IN";
     }
 }