diff --git a/src/main/java/com/alibaba/druid/sql/visitor/SQLEvalVisitorUtils.java b/src/main/java/com/alibaba/druid/sql/visitor/SQLEvalVisitorUtils.java
index f7b6759cef..16e20f2458 100644
--- a/src/main/java/com/alibaba/druid/sql/visitor/SQLEvalVisitorUtils.java
+++ b/src/main/java/com/alibaba/druid/sql/visitor/SQLEvalVisitorUtils.java
@@ -350,11 +350,10 @@ public class SQLEvalVisitorUtils {
             }
 
             double doubleValue = castToDouble(paramValue);
-            int result = (int) Math.ceil(doubleValue);
-
-            if (Double.isNaN(result)) {
+            if (Double.isNaN(doubleValue)) {
                 x.putAttribute(EVAL_VALUE, null);
             } else {
+                int result = (int) Math.ceil(doubleValue);
                 x.putAttribute(EVAL_VALUE, result);
             }
         } else if ("cos".equals(methodName)) {