diff --git a/mybatis-flex-core/src/main/java/com/mybatisflex/core/activerecord/query/JoinBuilder.java b/mybatis-flex-core/src/main/java/com/mybatisflex/core/activerecord/query/JoinBuilder.java
index 862c2795..ee23d8ca 100644
--- a/mybatis-flex-core/src/main/java/com/mybatisflex/core/activerecord/query/JoinBuilder.java
+++ b/mybatis-flex-core/src/main/java/com/mybatisflex/core/activerecord/query/JoinBuilder.java
@@ -19,7 +19,7 @@ package com.mybatisflex.core.activerecord.query;
 import com.mybatisflex.core.query.CPI;
 import com.mybatisflex.core.query.Join;
 import com.mybatisflex.core.query.QueryCondition;
-import com.mybatisflex.core.query.RawFragment;
+import com.mybatisflex.core.query.RawQueryCondition;
 
 /**
  * Lambda joins 构建器。
@@ -43,7 +43,7 @@ public class JoinBuilder<R extends QueryModel<R>> {
     }
 
     public R on(String on) {
-        join.on(new RawFragment(on));
+        join.on(new RawQueryCondition(on));
         return queryModel;
     }
 
diff --git a/mybatis-flex-core/src/main/java/com/mybatisflex/core/query/Joiner.java b/mybatis-flex-core/src/main/java/com/mybatisflex/core/query/Joiner.java
index 80340026..420c1c83 100644
--- a/mybatis-flex-core/src/main/java/com/mybatisflex/core/query/Joiner.java
+++ b/mybatis-flex-core/src/main/java/com/mybatisflex/core/query/Joiner.java
@@ -37,7 +37,7 @@ public class Joiner<M> {
     }
 
     public M on(String on) {
-        join.on(new RawFragment(on));
+        join.on(new RawQueryCondition(on));
         return queryWrapper;
     }
 
diff --git a/mybatis-flex-core/src/main/java/com/mybatisflex/core/query/QueryCondition.java b/mybatis-flex-core/src/main/java/com/mybatisflex/core/query/QueryCondition.java
index 95015777..702f5d46 100644
--- a/mybatis-flex-core/src/main/java/com/mybatisflex/core/query/QueryCondition.java
+++ b/mybatis-flex-core/src/main/java/com/mybatisflex/core/query/QueryCondition.java
@@ -149,11 +149,11 @@ public class QueryCondition implements CloneSupport<QueryCondition> {
 
 
     public QueryCondition and(String sql) {
-        return and(new RawFragment(sql));
+        return and(new RawQueryCondition(sql));
     }
 
     public QueryCondition and(String sql, Object... params) {
-        return and(new RawFragment(sql, params));
+        return and(new RawQueryCondition(sql, params));
     }
 
     public QueryCondition and(QueryCondition nextCondition) {
@@ -161,11 +161,11 @@ public class QueryCondition implements CloneSupport<QueryCondition> {
     }
 
     public QueryCondition or(String sql) {
-        return or(new RawFragment(sql));
+        return or(new RawQueryCondition(sql));
     }
 
     public QueryCondition or(String sql, Object... params) {
-        return or(new RawFragment(sql, params));
+        return or(new RawQueryCondition(sql, params));
     }
 
     public QueryCondition or(QueryCondition nextCondition) {
@@ -208,8 +208,8 @@ public class QueryCondition implements CloneSupport<QueryCondition> {
                     .append(SqlConsts.BRACKET_RIGHT);
             }
             //原生sql
-            else if (value instanceof RawFragment) {
-                sql.append(((RawFragment) value).getContent());
+            else if (value instanceof RawQueryCondition) {
+                sql.append(((RawQueryCondition) value).getContent());
             }
             //正常查询，构建问号
             else {
@@ -251,7 +251,7 @@ public class QueryCondition implements CloneSupport<QueryCondition> {
             || SqlConsts.IS_NOT_NULL.equals(logic)
             || value instanceof QueryColumn
             || value instanceof QueryWrapper
-            || value instanceof RawFragment) {
+            || value instanceof RawQueryCondition) {
             //do nothing
         }
 
diff --git a/mybatis-flex-core/src/main/java/com/mybatisflex/core/query/QueryMethods.java b/mybatis-flex-core/src/main/java/com/mybatisflex/core/query/QueryMethods.java
index 768c6f83..574dd58d 100644
--- a/mybatis-flex-core/src/main/java/com/mybatisflex/core/query/QueryMethods.java
+++ b/mybatis-flex-core/src/main/java/com/mybatisflex/core/query/QueryMethods.java
@@ -2628,14 +2628,14 @@ public class QueryMethods {
      * 构建原生查询条件。
      */
     public static QueryCondition raw(String raw) {
-        return new RawFragment(raw);
+        return new RawQueryCondition(raw);
     }
 
     /**
      * 构建原生查询条件，并附带参数。
      */
     public static QueryCondition raw(String raw, Object... params) {
-        return new RawFragment(raw, params);
+        return new RawQueryCondition(raw, params);
     }
 
 
diff --git a/mybatis-flex-core/src/main/java/com/mybatisflex/core/query/QueryWrapper.java b/mybatis-flex-core/src/main/java/com/mybatisflex/core/query/QueryWrapper.java
index 37833cf3..e6fe4648 100644
--- a/mybatis-flex-core/src/main/java/com/mybatisflex/core/query/QueryWrapper.java
+++ b/mybatis-flex-core/src/main/java/com/mybatisflex/core/query/QueryWrapper.java
@@ -23,9 +23,20 @@ import com.mybatisflex.core.dialect.DialectFactory;
 import com.mybatisflex.core.table.TableDef;
 import com.mybatisflex.core.table.TableInfo;
 import com.mybatisflex.core.table.TableInfoFactory;
-import com.mybatisflex.core.util.*;
+import com.mybatisflex.core.util.ArrayUtil;
+import com.mybatisflex.core.util.ClassUtil;
+import com.mybatisflex.core.util.CollectionUtil;
+import com.mybatisflex.core.util.LambdaGetter;
+import com.mybatisflex.core.util.LambdaUtil;
+import com.mybatisflex.core.util.SqlUtil;
+import com.mybatisflex.core.util.StringUtil;
 
-import java.util.*;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.List;
+import java.util.Map;
 import java.util.function.BooleanSupplier;
 import java.util.function.Consumer;
 import java.util.function.Predicate;
@@ -240,12 +251,12 @@ public class QueryWrapper extends BaseQueryWrapper<QueryWrapper> {
     }
 
     public QueryWrapper where(String sql) {
-        this.setWhereQueryCondition(new RawFragment(sql));
+        this.setWhereQueryCondition(new RawQueryCondition(sql));
         return this;
     }
 
     public QueryWrapper where(String sql, Object... params) {
-        this.setWhereQueryCondition(new RawFragment(sql, params));
+        this.setWhereQueryCondition(new RawQueryCondition(sql, params));
         return this;
     }
 
@@ -270,12 +281,12 @@ public class QueryWrapper extends BaseQueryWrapper<QueryWrapper> {
     }
 
     public QueryWrapper and(String sql) {
-        this.addWhereQueryCondition(new RawFragment(sql), SqlConnector.AND);
+        this.addWhereQueryCondition(new RawQueryCondition(sql), SqlConnector.AND);
         return this;
     }
 
     public QueryWrapper and(String sql, Object... params) {
-        this.addWhereQueryCondition(new RawFragment(sql, params), SqlConnector.AND);
+        this.addWhereQueryCondition(new RawQueryCondition(sql, params), SqlConnector.AND);
         return this;
     }
 
@@ -319,12 +330,12 @@ public class QueryWrapper extends BaseQueryWrapper<QueryWrapper> {
     }
 
     public QueryWrapper or(String sql) {
-        this.addWhereQueryCondition(new RawFragment(sql), SqlConnector.OR);
+        this.addWhereQueryCondition(new RawQueryCondition(sql), SqlConnector.OR);
         return this;
     }
 
     public QueryWrapper or(String sql, Object... params) {
-        this.addWhereQueryCondition(new RawFragment(sql, params), SqlConnector.OR);
+        this.addWhereQueryCondition(new RawQueryCondition(sql, params), SqlConnector.OR);
         return this;
     }
 
@@ -766,7 +777,7 @@ public class QueryWrapper extends BaseQueryWrapper<QueryWrapper> {
         }
         for (String queryOrderBy : orderBys) {
             if (StringUtil.isNotBlank(queryOrderBy)) {
-                addOrderBy(new StringQueryOrderBy(queryOrderBy));
+                addOrderBy(new RawQueryOrderBy(queryOrderBy));
             }
         }
         return this;
diff --git a/mybatis-flex-core/src/main/java/com/mybatisflex/core/query/RawQueryColumn.java b/mybatis-flex-core/src/main/java/com/mybatisflex/core/query/RawQueryColumn.java
index 3a48cba6..482765df 100644
--- a/mybatis-flex-core/src/main/java/com/mybatisflex/core/query/RawQueryColumn.java
+++ b/mybatis-flex-core/src/main/java/com/mybatisflex/core/query/RawQueryColumn.java
@@ -22,14 +22,16 @@ import java.util.Arrays;
 import java.util.List;
 
 /**
- * 自定义字符串列，用于扩展
+ * 原生列。
+ *
+ * @author michael
+ * @author 王帅
  */
 public class RawQueryColumn extends QueryColumn implements HasParamsColumn {
 
     protected String content;
     protected Object[] params;
 
-
     public RawQueryColumn(Object content, Object... params) {
         this.content = String.valueOf(content);
         this.params = params;
@@ -53,6 +55,14 @@ public class RawQueryColumn extends QueryColumn implements HasParamsColumn {
             '}';
     }
 
+    public String getContent() {
+        return content;
+    }
+
+    public Object[] getParams() {
+        return params;
+    }
+
     @Override
     public RawQueryColumn clone() {
         return (RawQueryColumn) super.clone();
diff --git a/mybatis-flex-core/src/main/java/com/mybatisflex/core/query/RawFragment.java b/mybatis-flex-core/src/main/java/com/mybatisflex/core/query/RawQueryCondition.java
similarity index 82%
rename from mybatis-flex-core/src/main/java/com/mybatisflex/core/query/RawFragment.java
rename to mybatis-flex-core/src/main/java/com/mybatisflex/core/query/RawQueryCondition.java
index f13c53b6..bd524266 100644
--- a/mybatis-flex-core/src/main/java/com/mybatisflex/core/query/RawFragment.java
+++ b/mybatis-flex-core/src/main/java/com/mybatisflex/core/query/RawQueryCondition.java
@@ -22,19 +22,20 @@ import com.mybatisflex.core.util.StringUtil;
 import java.util.List;
 
 /**
- * SQL 原生片段
+ * 原生条件。
+ *
+ * @author michael
+ * @author 王帅
  */
-public class RawFragment extends QueryCondition {
-
+public class RawQueryCondition extends QueryCondition {
 
     protected String content;
 
-
-    public RawFragment(String content) {
+    public RawQueryCondition(String content) {
         this.content = content;
     }
 
-    public RawFragment(String content, Object... paras) {
+    public RawQueryCondition(String content, Object... paras) {
         this.content = content;
         this.setValue(paras);
     }
@@ -72,13 +73,19 @@ public class RawFragment extends QueryCondition {
     }
 
     @Override
-    public RawFragment clone() {
-        return (RawFragment) super.clone();
+    public String toString() {
+        return "RawQueryCondition{" +
+            "content='" + content + '\'' +
+            '}';
     }
 
-
     public String getContent() {
         return content;
     }
 
+    @Override
+    public RawQueryCondition clone() {
+        return (RawQueryCondition) super.clone();
+    }
+
 }
diff --git a/mybatis-flex-core/src/main/java/com/mybatisflex/core/query/StringQueryOrderBy.java b/mybatis-flex-core/src/main/java/com/mybatisflex/core/query/RawQueryOrderBy.java
similarity index 55%
rename from mybatis-flex-core/src/main/java/com/mybatisflex/core/query/StringQueryOrderBy.java
rename to mybatis-flex-core/src/main/java/com/mybatisflex/core/query/RawQueryOrderBy.java
index 0e197c69..2f9ebe28 100644
--- a/mybatis-flex-core/src/main/java/com/mybatisflex/core/query/StringQueryOrderBy.java
+++ b/mybatis-flex-core/src/main/java/com/mybatisflex/core/query/RawQueryOrderBy.java
@@ -22,25 +22,45 @@ import com.mybatisflex.core.util.SqlUtil;
 import java.util.List;
 
 /**
- * 排序字段
+ * 原生排序字段。
+ *
+ * @author michael
+ * @author 王帅
  */
-public class StringQueryOrderBy extends QueryOrderBy {
+public class RawQueryOrderBy extends QueryOrderBy {
 
-    private final String orderBy;
+    protected String content;
 
-    public StringQueryOrderBy(String orderBy) {
-        SqlUtil.keepOrderBySqlSafely(orderBy);
-        this.orderBy = orderBy;
+    public RawQueryOrderBy(String content) {
+        this(content, true);
+    }
+
+    public RawQueryOrderBy(String content, boolean checkAvailable) {
+        if (checkAvailable) {
+            SqlUtil.keepOrderBySqlSafely(content);
+        }
+        this.content = content;
     }
 
     @Override
     public String toSql(List<QueryTable> queryTables, IDialect dialect) {
-        return orderBy;
+        return content;
     }
 
     @Override
-    public StringQueryOrderBy clone() {
-        return (StringQueryOrderBy) super.clone();
+    public String toString() {
+        return "RawQueryOrderBy{" +
+            "content='" + content + '\'' +
+            '}';
+    }
+
+    public String getContent() {
+        return content;
+    }
+
+    @Override
+    public RawQueryOrderBy clone() {
+        return (RawQueryOrderBy) super.clone();
     }
 
 }
diff --git a/mybatis-flex-core/src/main/java/com/mybatisflex/core/query/RawQueryTable.java b/mybatis-flex-core/src/main/java/com/mybatisflex/core/query/RawQueryTable.java
index 819fa983..3cf95cb7 100644
--- a/mybatis-flex-core/src/main/java/com/mybatisflex/core/query/RawQueryTable.java
+++ b/mybatis-flex-core/src/main/java/com/mybatisflex/core/query/RawQueryTable.java
@@ -29,7 +29,7 @@ import java.util.Objects;
  */
 public class RawQueryTable extends QueryTable {
 
-    private final String content;
+    protected String content;
 
     public RawQueryTable(String content) {
         this.content = content;
@@ -60,6 +60,10 @@ public class RawQueryTable extends QueryTable {
             '}';
     }
 
+    public String getContent() {
+        return content;
+    }
+
     @Override
     public RawQueryTable clone() {
         return (RawQueryTable) super.clone();
diff --git a/mybatis-flex-core/src/main/java/com/mybatisflex/core/query/WrapperUtil.java b/mybatis-flex-core/src/main/java/com/mybatisflex/core/query/WrapperUtil.java
index 039b8f78..2ab6dad3 100644
--- a/mybatis-flex-core/src/main/java/com/mybatisflex/core/query/WrapperUtil.java
+++ b/mybatis-flex-core/src/main/java/com/mybatisflex/core/query/WrapperUtil.java
@@ -98,7 +98,7 @@ class WrapperUtil {
         Object value = condition.getValue();
         if (value == null
             || value instanceof QueryColumn
-            || value instanceof RawFragment) {
+            || value instanceof RawQueryCondition) {
             getValues(condition.next, params);
             return;
         }
@@ -133,8 +133,8 @@ class WrapperUtil {
     static String buildValue(Object value) {
         if (value instanceof Number || value instanceof Boolean) {
             return String.valueOf(value);
-        } else if (value instanceof RawFragment) {
-            return ((RawFragment) value).getContent();
+        } else if (value instanceof RawQueryCondition) {
+            return ((RawQueryCondition) value).getContent();
         } else if (value instanceof QueryColumn) {
             return ((QueryColumn) value).toConditionSql(null, DialectFactory.getDialect());
         } else {