diff --git a/src/main/java/com/seeyon/utils/form/EnumMapUtils.java b/src/main/java/com/seeyon/utils/form/EnumMapUtils.java
index ee76691..88ab52c 100644
--- a/src/main/java/com/seeyon/utils/form/EnumMapUtils.java
+++ b/src/main/java/com/seeyon/utils/form/EnumMapUtils.java
@@ -249,7 +249,7 @@ public class EnumMapUtils {
         if(enumItemId == null) {
             return null;
         }
-        String str = enumItemId instanceof Long ? String.valueOf(enumItemId) : (enumItemId instanceof String ? (String)enumItemId : null);
+        String str = enumItemId instanceof Long ? String.valueOf(enumItemId) : enumItemId + "";
         if(str == null) {
             return null;
         }
diff --git a/src/main/java/com/seeyon/utils/form/SqlGenerator.java b/src/main/java/com/seeyon/utils/form/SqlGenerator.java
index bda2180..73873d1 100644
--- a/src/main/java/com/seeyon/utils/form/SqlGenerator.java
+++ b/src/main/java/com/seeyon/utils/form/SqlGenerator.java
@@ -327,11 +327,14 @@ public class SqlGenerator {
         }
         switch (factor) {
             case EQ: return "=";
+            case NEQ: return "<>";
             case GT: return ">";
             case GE: return ">=";
             case LT: return "<";
             case LE: return "<=";
             case LIKE: return "LIKE";
+            case IN: return "IN";
+            case NOT_IN: return "NOT IN";
             case FIND_IN_SET: return "FIND_IN_SET";
             case REGEXP: return "REGEXP";
             case BETWEEN: return "BETWEEN";