diff --git a/fe/fe-core/src/main/java/org/apache/doris/nereids/rules/expression/rules/OneRangePartitionEvaluator.java b/fe/fe-core/src/main/java/org/apache/doris/nereids/rules/expression/rules/OneRangePartitionEvaluator.java
index e605b71d22fb498..eb9fd6e149160ba 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/nereids/rules/expression/rules/OneRangePartitionEvaluator.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/nereids/rules/expression/rules/OneRangePartitionEvaluator.java
@@ -801,9 +801,6 @@ private EvaluateRangeResult computeMonotonicFunctionRange(EvaluateRangeResult re
             return new EvaluateRangeResult((Expression) func, ImmutableMap.of((Expression) func,
                     context.rangeMap.get(func)), result.childrenResult);
         }
-        if (!func.isMonotonic()) {
-            return result;
-        }
         int childIndex = func.getMonotonicFunctionChildIndex();
         Expression funcChild = func.child(childIndex);
         boolean isNullable = partitionSlotContainsNull.getOrDefault(funcChild, true);
diff --git a/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/functions/scalar/DateFormat.java b/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/functions/scalar/DateFormat.java
index 4c409d431c9ccc8..972c0c8aec709f7 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/functions/scalar/DateFormat.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/functions/scalar/DateFormat.java
@@ -23,6 +23,7 @@
 import org.apache.doris.nereids.trees.expressions.functions.ExplicitlyCastableSignature;
 import org.apache.doris.nereids.trees.expressions.functions.Monotonic;
 import org.apache.doris.nereids.trees.expressions.functions.PropagateNullLiteral;
+import org.apache.doris.nereids.trees.expressions.literal.Literal;
 import org.apache.doris.nereids.trees.expressions.literal.VarcharLiteral;
 import org.apache.doris.nereids.trees.expressions.shape.BinaryExpression;
 import org.apache.doris.nereids.trees.expressions.visitor.ExpressionVisitor;
@@ -84,7 +85,7 @@ public <R, C> R accept(ExpressionVisitor<R, C> visitor, C context) {
     }
 
     @Override
-    public boolean isMonotonic() {
+    public boolean isMonotonic(Literal lower, Literal upper) {
         Expression format = child(1);
         if (!(format instanceof VarcharLiteral)) {
             return false;