diff --git a/commons/common-util/src/main/java/com/schbrain/common/util/StreamUtils.java b/commons/common-util/src/main/java/com/schbrain/common/util/StreamUtils.java
index 533f0389ad71bd5b5162ddedda0a0da947f062cb..d645e475ef9e67a4402e2ff791e749e901f4220d 100644
--- a/commons/common-util/src/main/java/com/schbrain/common/util/StreamUtils.java
+++ b/commons/common-util/src/main/java/com/schbrain/common/util/StreamUtils.java
@@ -29,28 +29,20 @@ public class StreamUtils {
         return filterToList(data, predicate, Function.identity());
     }
 
-    public static <T, V> List<V> filterToList(Iterable<T> data, Function<T, V> mapper, Predicate<V> predicate) {
-        return filter(data, mapper, predicate, Function.identity(), Collectors.toList());
-    }
-
     public static <T, V> List<V> filterToList(Iterable<T> data, Predicate<T> predicate, Function<T, V> mapper) {
-        return filter(data, Function.identity(), predicate, mapper, Collectors.toList());
+        return filter(data, predicate, mapper, Collectors.toList());
     }
 
     public static <T> Set<T> filterToSet(Iterable<T> data, Predicate<T> predicate) {
         return filterToSet(data, predicate, Function.identity());
     }
 
-    public static <T, V> Set<V> filterToSet(Iterable<T> data, Function<T, V> mapper, Predicate<V> predicate) {
-        return filter(data, mapper, predicate, Function.identity(), Collectors.toSet());
-    }
-
     public static <T, V> Set<V> filterToSet(Iterable<T> data, Predicate<T> predicate, Function<T, V> mapper) {
-        return filter(data, Function.identity(), predicate, mapper, Collectors.toSet());
+        return filter(data, predicate, mapper, Collectors.toSet());
     }
 
-    public static <T, E, V, R> R filter(Iterable<T> data, Function<T, E> keyMapper, Predicate<E> predicate, Function<E, V> valueMapper, Collector<V, ?, R> collector) {
-        return from(data).map(keyMapper).filter(predicate).map(valueMapper).collect(collector);
+    public static <T, E, V, R> R filter(Iterable<T> data, Predicate<T> predicate, Function<T, V> valueMapper, Collector<V, ?, R> collector) {
+        return from(data).filter(predicate).map(valueMapper).collect(collector);
     }
 
     public static <T, E> List<E> toList(Iterable<T> data, Function<T, E> keyMapper) {
diff --git a/starters/mybatis-spring-boot-starter/src/main/java/com/schbrain/framework/autoconfigure/mybatis/util/LambdaUtils.java b/starters/mybatis-spring-boot-starter/src/main/java/com/schbrain/framework/autoconfigure/mybatis/util/LambdaUtils.java
index bc325c5408837197980c0c3b31ce1ae40f041740..5b66c88bbb655ee0390012f2f8818c83c88c4f14 100644
--- a/starters/mybatis-spring-boot-starter/src/main/java/com/schbrain/framework/autoconfigure/mybatis/util/LambdaUtils.java
+++ b/starters/mybatis-spring-boot-starter/src/main/java/com/schbrain/framework/autoconfigure/mybatis/util/LambdaUtils.java
@@ -10,8 +10,7 @@ import com.baomidou.mybatisplus.core.toolkit.support.SFunction;
 public class LambdaUtils {
 
     public static <T> String getColumnName(SFunction<T, ?> column) {
-        LambdaQueryWrapperExt<T> query = new LambdaQueryWrapperExt<>();
-        return query.columnToString(column);
+        return new LambdaQueryWrapperExt<T>().columnToString(column);
     }
 
     /**