diff --git a/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/functions/executable/ExecutableFunctions.java b/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/functions/executable/ExecutableFunctions.java
index 8c8e7951ff2630..d54ea4681c514f 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/functions/executable/ExecutableFunctions.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/functions/executable/ExecutableFunctions.java
@@ -105,6 +105,9 @@ public static Expression acos(DoubleLiteral literal) {
         }
     }
 
+    /**
+     * append_trailing_char_if_absent function
+    */
     @ExecFunction(name = "append_trailing_char_if_absent", argTypes = {"VARCHAR", "VARCHAR"}, returnType = "VARCHAR")
     public static Expression appendTrailingIfCharAbsent(StringLikeLiteral literal, StringLikeLiteral chr) {
         if (chr.getValue().length() != 1) {
@@ -113,7 +116,7 @@ public static Expression appendTrailingIfCharAbsent(StringLikeLiteral literal, S
         if (literal.getValue().endsWith(chr.getValue())) {
             return literal;
         } else {
-            return new VarcharLiteral( literal.getValue() + chr.getValue());
+            return new VarcharLiteral(literal.getValue() + chr.getValue());
         }
     }