diff --git a/README.md b/README.md
index dd259b3..2e22384 100644
--- a/README.md
+++ b/README.md
@@ -44,9 +44,9 @@
 * service继承MyBaseService (可选)
 * serviceImpl继承MyBaseServiceImpl (可选)
 
-## MyQueryWrapper用法
+## MyQuery用法
 
-简单的3表查询
+### 简单的3表查询
 ```java
 class test {
     @Resource
@@ -99,7 +99,7 @@ WHERE (
 * lambda() string查询转lambda查询
 * sql组装由mp完成,正常使用没有sql注入风险
 
-分页查询
+### 分页查询
   
 ```java
 class test {
@@ -136,7 +136,7 @@ RIGHT JOIN area a on addr.area_id = a.id
 LIMIT ?,?
 ```
 
-还可以怎么操作,但不建议
+### 还可以这么操作,但不建议
 
 ```java
 class test {
@@ -187,11 +187,11 @@ WHERE (
 ORDER BY addr.id DESC
 ```
 
-# MyLambdaQueryWrapper用法
+## MyLambdaQueryWrapper用法
 
 ### MyLambdaQueryWrapper更符合面向对象(OOP),没有难以理解的常量(魔术值),全部基于lambda,但好像不那么好理解
 
-简单的3表查询
+#### 简单的3表查询
 
 ```java
 class test {
@@ -199,13 +199,12 @@ class test {
     private UserMapper userMapper;
 
     void testJoin() {
-        List<UserDTO> list = userMapper.selectJoinList(new MyLambdaQueryWrapper<UserEntity>()
+        List<UserDTO> list = userMapper.selectJoinList(UserDTO.class, new MyLambdaQueryWrapper<UserEntity>()
                         .selectAll(UserEntity.class)
                         .leftJoin(UserEntity::getId, UserAddressEntity::getUserId,
                                 r1 -> r1.select(UserAddressEntity::getAddress)
                                         .leftJoin(UserAddressEntity::getAreaId, AreaEntity::getId,
-                                                r2 -> r2.select(AreaEntity::getProvince)))
-                , UserDTO.class);
+                                                r2 -> r2.select(AreaEntity::getProvince))));
     }
 }
 ```
@@ -229,48 +228,18 @@ sql -> 伪代码
 ```java
 class test {
     void testJoin() {
-        List<UserDTO> list = userMapper.selectJoinList(new MyLambdaQueryWrapper<user表>()
+        List<UserDTO> list = userMapper.selectJoinList(UserDTO.class, new MyLambdaQueryWrapper<user表>()
                         .selectAll(user表实体类.class)//查询user表全部字段
                         .leftJoin(user表on字段, user_address表on字段,
                                 user_address表对象 -> user_address表对象
                                         .select(user_address表address字段)
                                         .leftJoin(user_address表表的on字段, area表的on字段,
-                                                area表对象 -> area表对象.select(area表的province字段)))
-                , UserDTO.class);//返回对象class
+                                                area表对象 -> area表对象.select(area表的province字段))));
     }
 }
 ```
 
-查询user全部字段和user_address表中的address,tel
-
-```java
-class test {
-    @Resource
-    private UserMapper userMapper;
-
-    void testJoin() {
-        List<UserDTO> list = userMapper.selectJoinList(UserDTO.class, new MyLambdaQueryWrapper<UserEntity>()
-                        .selectAll(UserEntity.class)
-                        .leftJoin(UserEntity::getId, UserAddressEntity::getUserId,
-                                right -> right.select(UserAddressEntity::getAddress, UserAddressEntity::getTel)));
-    }
-}
-```
-
-对应sql
-
-```sql
-SELECT t0.name,
-       t0.sex,
-       t0.head_img,
-       t0.id,
-       t1.address,
-       t1.tel
-FROM user t0
-         LEFT JOIN user_address t1 ON t0.id = t1.user_id
-```
-
-查询字段别名 head_img as userHeadImg
+#### 字段别名,查询字段别名 head_img as userHeadImg
 
 ```java
 class test {
@@ -302,7 +271,7 @@ FROM user t0
 user left join user_address on user.id = User_address.user_id  
 第三个参数是右表wrapper对象,可以继续使用,以上方法.
 
-连表条件查询
+#### 条件查询
 
 ```java
 class test {
diff --git a/src/main/java/com/github/mybatisplus/interceptor/MyResultInterceptor.java b/src/main/java/com/github/mybatisplus/interceptor/MyResultInterceptor.java
index 7b12356..b910368 100644
--- a/src/main/java/com/github/mybatisplus/interceptor/MyResultInterceptor.java
+++ b/src/main/java/com/github/mybatisplus/interceptor/MyResultInterceptor.java
@@ -3,6 +3,7 @@ package com.github.mybatisplus.interceptor;
 import com.baomidou.mybatisplus.core.MybatisParameterHandler;
 import com.baomidou.mybatisplus.core.toolkit.ClassUtils;
 import com.baomidou.mybatisplus.core.toolkit.StringUtils;
+import com.github.mybatisplus.toolkit.Constant;
 import org.apache.ibatis.executor.resultset.DefaultResultSetHandler;
 import org.apache.ibatis.executor.resultset.ResultSetHandler;
 import org.apache.ibatis.plugin.*;
@@ -74,7 +75,7 @@ public class MyResultInterceptor implements Interceptor {
                     Object object = mybatisParameterHandler.getParameterObject();
                     if (object instanceof Map) {
                         Map<?, ?> args = (Map<?, ?>) object;
-                        return (Class<?>) args.get("clazz");
+                        return (Class<?>) args.get(Constant.CLAZZ);
                     }
                 } catch (Exception e) {
                     return null;
diff --git a/src/main/java/com/github/mybatisplus/method/SqlMethod.java b/src/main/java/com/github/mybatisplus/method/SqlMethod.java
index 53d183d..6230af7 100644
--- a/src/main/java/com/github/mybatisplus/method/SqlMethod.java
+++ b/src/main/java/com/github/mybatisplus/method/SqlMethod.java
@@ -1,5 +1,9 @@
 package com.github.mybatisplus.method;
 
+import java.util.Arrays;
+import java.util.List;
+import java.util.stream.Collectors;
+
 /**
  * @author yulichang
  * @see com.baomidou.mybatisplus.core.enums.SqlMethod
@@ -50,4 +54,6 @@ public enum SqlMethod {
         return sql;
     }
 
+
+    public static final List<String> collect = Arrays.stream(SqlMethod.values()).map(SqlMethod::getMethod).collect(Collectors.toList());
 }
diff --git a/src/main/java/com/github/mybatisplus/query/MyLambdaQuery.java b/src/main/java/com/github/mybatisplus/query/MyLambdaQuery.java
index 5efb207..5df0872 100644
--- a/src/main/java/com/github/mybatisplus/query/MyLambdaQuery.java
+++ b/src/main/java/com/github/mybatisplus/query/MyLambdaQuery.java
@@ -156,8 +156,8 @@ public class MyLambdaQuery<T> extends MyAbstractLambda<T, MyLambdaQuery<T>>
     /**
      * 返回一个支持 lambda 函数写法的 wrapper
      */
-    public MyQueryWrapper<T> stringQuery() {
-        return new MyQueryWrapper<>(getEntity(), getEntityClass(), paramNameSeq, paramNameValuePairs,
+    public MyQuery<T> stringQuery() {
+        return new MyQuery<>(getEntity(), getEntityClass(), paramNameSeq, paramNameValuePairs,
                 expression, sqlSelect, from, lastSql, sqlComment, sqlFirst);
     }
 
diff --git a/src/main/java/com/github/mybatisplus/query/MyQueryWrapper.java b/src/main/java/com/github/mybatisplus/query/MyQuery.java
similarity index 74%
rename from src/main/java/com/github/mybatisplus/query/MyQueryWrapper.java
rename to src/main/java/com/github/mybatisplus/query/MyQuery.java
index 17147e6..971cf6f 100644
--- a/src/main/java/com/github/mybatisplus/query/MyQueryWrapper.java
+++ b/src/main/java/com/github/mybatisplus/query/MyQuery.java
@@ -16,24 +16,24 @@ import java.util.function.Predicate;
  * copy {@link com.baomidou.mybatisplus.core.conditions.query.QueryWrapper}
  */
 @SuppressWarnings("serial")
-public class MyQueryWrapper<T> extends MyAbstractWrapper<T, String, MyQueryWrapper<T>>
-        implements Query<MyQueryWrapper<T>, T, String> {
+public class MyQuery<T> extends MyAbstractWrapper<T, String, MyQuery<T>>
+        implements Query<MyQuery<T>, T, String> {
 
     /**
      * 查询字段
      */
     private SharedString sqlSelect = new SharedString();
 
-    public MyQueryWrapper() {
+    public MyQuery() {
         this(null);
     }
 
-    public MyQueryWrapper(T entity) {
+    public MyQuery(T entity) {
         super.setEntity(entity);
         super.initNeed();
     }
 
-    public MyQueryWrapper(T entity, String... columns) {
+    public MyQuery(T entity, String... columns) {
         super.setEntity(entity);
         super.initNeed();
         this.select(columns);
@@ -44,9 +44,9 @@ public class MyQueryWrapper<T> extends MyAbstractWrapper<T, String, MyQueryWrapp
      *
      * @param entityClass 本不应该需要的
      */
-    public MyQueryWrapper(T entity, Class<T> entityClass, AtomicInteger paramNameSeq,
-                          Map<String, Object> paramNameValuePairs, MergeSegments mergeSegments,
-                          SharedString sqlSelect, SharedString from, SharedString lastSql, SharedString sqlComment, SharedString sqlFirst) {
+    public MyQuery(T entity, Class<T> entityClass, AtomicInteger paramNameSeq,
+                   Map<String, Object> paramNameValuePairs, MergeSegments mergeSegments,
+                   SharedString sqlSelect, SharedString from, SharedString lastSql, SharedString sqlComment, SharedString sqlFirst) {
         super.setEntity(entity);
         super.setEntityClass(entityClass);
         this.paramNameSeq = paramNameSeq;
@@ -60,7 +60,7 @@ public class MyQueryWrapper<T> extends MyAbstractWrapper<T, String, MyQueryWrapp
     }
 
     @Override
-    public MyQueryWrapper<T> select(String... columns) {
+    public MyQuery<T> select(String... columns) {
         if (ArrayUtils.isNotEmpty(columns)) {
             this.sqlSelect.setStringValue(String.join(StringPool.COMMA, columns));
         }
@@ -68,7 +68,7 @@ public class MyQueryWrapper<T> extends MyAbstractWrapper<T, String, MyQueryWrapp
     }
 
     @Override
-    public MyQueryWrapper<T> select(Class<T> entityClass, Predicate<TableFieldInfo> predicate) {
+    public MyQuery<T> select(Class<T> entityClass, Predicate<TableFieldInfo> predicate) {
         super.setEntityClass(entityClass);
         this.sqlSelect.setStringValue(TableInfoHelper.getTableInfo(getEntityClass()).chooseSelect(predicate));
         return typedThis;
@@ -99,8 +99,8 @@ public class MyQueryWrapper<T> extends MyAbstractWrapper<T, String, MyQueryWrapp
      * </p>
      */
     @Override
-    protected MyQueryWrapper<T> instance() {
-        return new MyQueryWrapper<>(getEntity(), getEntityClass(), paramNameSeq, paramNameValuePairs, new MergeSegments(),
+    protected MyQuery<T> instance() {
+        return new MyQuery<>(getEntity(), getEntityClass(), paramNameSeq, paramNameValuePairs, new MergeSegments(),
                 null, null, SharedString.emptyString(), SharedString.emptyString(), SharedString.emptyString());
     }