diff --git a/docs/.vitepress/theme/MyLayout.vue b/docs/.vitepress/theme/MyLayout.vue
index 5979486e..74fc549d 100644
--- a/docs/.vitepress/theme/MyLayout.vue
+++ b/docs/.vitepress/theme/MyLayout.vue
@@ -134,7 +134,8 @@ const {Layout} = DefaultTheme
                     </div>
                 </div>
                 <div class="banner-bottom">
-                    虚位以待
+                    <a href="https://www.diboot.com/?from=mf" target="_blank"><img
+                        src="https://www.diboot.com/diboot_mf.png" data-expired="20250116"></a>
                 </div>
             </div>
         </template>
diff --git a/mybatis-flex-core/src/main/java/com/mybatisflex/core/dialect/DialectFactory.java b/mybatis-flex-core/src/main/java/com/mybatisflex/core/dialect/DialectFactory.java
index b5751390..3409b7ec 100644
--- a/mybatis-flex-core/src/main/java/com/mybatisflex/core/dialect/DialectFactory.java
+++ b/mybatis-flex-core/src/main/java/com/mybatisflex/core/dialect/DialectFactory.java
@@ -18,6 +18,8 @@ package com.mybatisflex.core.dialect;
 
 import java.util.EnumMap;
 import java.util.Map;
+
+import com.mybatisflex.core.exception.MybatisFlexException;
 import org.apache.ibatis.util.MapUtil;
 import com.mybatisflex.core.FlexGlobalConfig;
 import com.mybatisflex.core.dialect.impl.CommonsDialectImpl;
@@ -45,6 +47,7 @@ public class DialectFactory {
      * 通过设置当前线程的数据库类型，以达到在代码执行时随时切换方言的功能
      */
     private static final ThreadLocal<DbType> dbTypeThreadLocal = new ThreadLocal<>();
+    private static  DbType dbTypeGlobal  = null ;
 
 
     /**
@@ -75,6 +78,19 @@ public class DialectFactory {
         return dbTypeThreadLocal.get();
     }
 
+    public static DbType getGlobalDbType() {
+        return dbTypeGlobal;
+    }
+
+    public static void setGlobalDbType(DbType dbType) {
+        if(dbTypeGlobal == null&&dbType!=null){
+            dbTypeGlobal = dbType ;
+        }else if(dbTypeGlobal != null){
+            throw new MybatisFlexException("dbTypeGlobal is only set once");
+        }else if(dbType==null){
+            throw new MybatisFlexException("dbType can not be null");
+        }
+    }
 
     /**
      * 清除当前线程的 dbType
diff --git a/mybatis-flex-core/src/main/java/com/mybatisflex/core/mybatis/MapperInvocationHandler.java b/mybatis-flex-core/src/main/java/com/mybatisflex/core/mybatis/MapperInvocationHandler.java
index b61464c8..cad1f7f7 100644
--- a/mybatis-flex-core/src/main/java/com/mybatisflex/core/mybatis/MapperInvocationHandler.java
+++ b/mybatis-flex-core/src/main/java/com/mybatisflex/core/mybatis/MapperInvocationHandler.java
@@ -76,6 +76,11 @@ public class MapperInvocationHandler implements InvocationHandler {
 
             //优先获取用户自己配置的 dbType
             DbType dbType = DialectFactory.getHintDbType();
+            DbType dbTypeGlobal = DialectFactory.getGlobalDbType();
+            //当前线程没有设置dbType,但是全局设置了dbTypeGlobal，那么就使用全局的dbTypeGlobal
+            if(dbTypeGlobal!=null&&dbType==null){
+                dbType = dbTypeGlobal ;
+            }
             if (dbType == null) {
                 if (dataSourceKey != null && dataSource != null) {
                     dbType = dataSource.getDbType(dataSourceKey);
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 190b74e7..cc1d922f 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
@@ -2609,24 +2609,24 @@ public class QueryMethods {
     }
 
     /**
-     * SELECT 1 FROM table
+     * SELECT 1 as temp_one FROM table
      */
     public static QueryWrapper selectOne() {
-        return select(column("1"));
+        return select(column("1").as("temp_one"));
     }
 
     /**
-     * SELECT COUNT(*) FROM table
+     * SELECT COUNT(*) as temp_count FROM table
      */
     public static QueryWrapper selectCount() {
-        return select(count());
+        return select(count().as("temp_count"));
     }
 
     /**
-     * SELECT COUNT(1) FROM table
+     * SELECT COUNT(1) as temp_count_one FROM table
      */
     public static QueryWrapper selectCountOne() {
-        return select(count("1"));
+        return select(count(new RawQueryColumn("1")).as("temp_count_one"));
     }
 
     /**
diff --git a/mybatis-flex-core/src/test/java/com/mybatisflex/coretest/AccountSqlTester.java b/mybatis-flex-core/src/test/java/com/mybatisflex/coretest/AccountSqlTester.java
index ab356574..fecafb57 100644
--- a/mybatis-flex-core/src/test/java/com/mybatisflex/coretest/AccountSqlTester.java
+++ b/mybatis-flex-core/src/test/java/com/mybatisflex/coretest/AccountSqlTester.java
@@ -42,7 +42,7 @@ public class AccountSqlTester {
             .select()
             .from(ACCOUNT);
 
-        Assert.assertEquals("SELECT * FROM `tb_account`",query.toSQL());
+        Assert.assertEquals("SELECT * FROM `tb_account`", query.toSQL());
     }
 
     @Test
@@ -51,7 +51,7 @@ public class AccountSqlTester {
             .select()
             .from(ACCOUNT01);
 
-        Assert.assertEquals("SELECT * FROM `flex`.`tb_a01`",query.toSQL());
+        Assert.assertEquals("SELECT * FROM `flex`.`tb_a01`", query.toSQL());
     }
 
     @Test
@@ -68,7 +68,7 @@ public class AccountSqlTester {
         Assert.assertEquals("SELECT * FROM `flex`.`tb_a01_01` " +
                 "LEFT JOIN `tb_account_01` ON `flex`.`tb_a01_01`.`id` = `tb_account_01`.`id` " +
                 "WHERE `flex`.`tb_a01_01`.`id` >= 100 AND `tb_account_01`.`sex` = 1"
-        ,query.toSQL());
+            , query.toSQL());
 
         System.out.println(query.toSQL());
         // 重置dynamicTableProcessor，防止影响其他的测试用例
@@ -89,7 +89,7 @@ public class AccountSqlTester {
         Assert.assertEquals("SELECT * FROM `flex`.`tb_a01_01` AS `a1` " +
                 "LEFT JOIN `tb_account_01` ON `a1`.`id` = `tb_account_01`.`id` " +
                 "WHERE `a1`.`id` >= 100 AND `tb_account_01`.`sex` = 1"
-            ,query.toSQL());
+            , query.toSQL());
 
         System.out.println(query.toSQL());
         // 重置dynamicTableProcessor，防止影响其他的测试用例
@@ -104,7 +104,7 @@ public class AccountSqlTester {
             .from(ACCOUNT);
 
         Assert.assertEquals("SELECT `id`, `user_name` FROM `tb_account`"
-            ,query.toSQL());
+            , query.toSQL());
 
         System.out.println(query.toSQL());
     }
@@ -122,7 +122,7 @@ public class AccountSqlTester {
                 "MAX(`a`.`age`) AS `ageMax` " +
                 "FROM `tb_account` AS `a`, `tb_article` AS `b` " +
                 "WHERE `a`.`id` = `b`.`account_id`"
-            ,query.toSQL());
+            , query.toSQL());
 
         System.out.println(query.toSQL());
     }
@@ -137,7 +137,7 @@ public class AccountSqlTester {
                 "MAX(`birthday`) AS `Max_BirthDay`, " +
                 "AVG(`sex`) AS `sex_avg` " +
                 "FROM `tb_account` AS `tableAlias`"
-            ,query.toSQL());
+            , query.toSQL());
 
         System.out.println(query.toSQL());
     }
@@ -152,7 +152,7 @@ public class AccountSqlTester {
                 "MAX(`birthday`) AS `Max_BirthDay`, " +
                 "AVG(`sex`) AS `sex_avg` " +
                 "FROM `tb_account` AS `tableAlias`"
-            ,query.toSQL());
+            , query.toSQL());
 
         System.out.println(query.toSQL());
     }
@@ -162,13 +162,13 @@ public class AccountSqlTester {
         QueryWrapper query = new QueryWrapper()
             .select(
                 new DistinctQueryColumn(ACCOUNT.SEX).as("sexDis"))
-            .select(  ACCOUNT.USER_NAME.add(ACCOUNT.AGE).as("addAlias"))
+            .select(ACCOUNT.USER_NAME.add(ACCOUNT.AGE).as("addAlias"))
             .select(new RawQueryColumn("abc").as("aBc"))
             .from(ACCOUNT);
 
         Assert.assertEquals("SELECT DISTINCT `sex` AS `sexDis`, (`user_name` + `age`) AS `addAlias`, abc AS `aBc` " +
                 "FROM `tb_account`"
-            ,query.toSQL());
+            , query.toSQL());
 
         System.out.println("sql = " + query.toSQL());
 
@@ -182,7 +182,7 @@ public class AccountSqlTester {
             .from(ACCOUNT);
 
         Assert.assertEquals("SELECT * FROM `tb_account`"
-            ,query.toSQL());
+            , query.toSQL());
 
         System.out.println(query.toSQL());
     }
@@ -200,7 +200,7 @@ public class AccountSqlTester {
         Assert.assertEquals("(SELECT `id` FROM `tb_account` ORDER BY `id` DESC) " +
                 "UNION (SELECT `id` FROM `tb_article`) " +
                 "UNION ALL (SELECT `id` FROM `tb_article`)"
-            ,query.toSQL());
+            , query.toSQL());
 
         System.out.println(query.toSQL());
     }
@@ -216,7 +216,7 @@ public class AccountSqlTester {
 
         Assert.assertEquals("SELECT * FROM `tb_account` " +
                 "WHERE `id` >= 100 AND `user_name` LIKE '%michael%'"
-            ,query.toSQL());
+            , query.toSQL());
 
         System.out.println(query.toSQL());
     }
@@ -231,7 +231,7 @@ public class AccountSqlTester {
 
         Assert.assertEquals("SELECT A.*, b.x FROM `tb_account` " +
                 "WHERE `id` >= 100 AND aaa IN ('michael', 'aaa')"
-            ,query.toSQL());
+            , query.toSQL());
 
         System.out.println(query.toSQL());
     }
@@ -249,13 +249,11 @@ public class AccountSqlTester {
             .or(ACCOUNT.SEX.eq(1).and(ACCOUNT.BIRTHDAY.eq(2)));
 
         String sql = "SELECT * FROM `tb_account` WHERE `id` >= 100 OR (`birthday` = 1) OR (`sex` = 1 AND `birthday` = 2)";
-        Assert.assertEquals(sql,query.toSQL());
+        Assert.assertEquals(sql, query.toSQL());
         System.out.println(query.toSQL());
     }
 
 
-
-
     @Test
     public void testWhereCond1Sql() {
         boolean flag = false;
@@ -266,7 +264,7 @@ public class AccountSqlTester {
             .and(ACCOUNT.USER_NAME.like("michael"));
 
         Assert.assertEquals("SELECT * FROM `tb_account` WHERE `user_name` LIKE '%michael%'"
-            ,query.toSQL());
+            , query.toSQL());
 
         System.out.println(query.toSQL());
     }
@@ -281,7 +279,7 @@ public class AccountSqlTester {
             .and(ACCOUNT.USER_NAME.notLike("michael"));
 
         Assert.assertEquals("SELECT * FROM `tb_account` WHERE `id` >= 100 AND `user_name` NOT LIKE '%michael%'"
-            ,query.toSQL());
+            , query.toSQL());
 
         System.out.println(query.toSQL());
     }
@@ -297,7 +295,7 @@ public class AccountSqlTester {
             .and(ACCOUNT.USER_NAME.like("michael"));
 
         Assert.assertEquals("SELECT * FROM `tb_account` WHERE `user_name` LIKE '%michael%'"
-            ,query.toSQL());
+            , query.toSQL());
 
         System.out.println(query.toSQL());
     }
@@ -318,11 +316,20 @@ public class AccountSqlTester {
         Assert.assertEquals("SELECT * FROM `tb_account` " +
                 "WHERE `id` >= 100 " +
                 "AND EXISTS (SELECT 1 FROM `tb_article` AS `a` WHERE `id` >= 100)"
-            ,query.toSQL());
+            , query.toSQL());
 
         System.out.println(query.toSQL());
     }
 
+    @Test
+    public void testSelectCountOne() {
+        QueryWrapper query = selectCountOne()
+            .from(ARTICLE);
+        Assert.assertEquals("SELECT COUNT(1) AS `temp_count_one` FROM `tb_article`"
+            , query.toSQL());
+
+        System.out.println(query.toSQL());
+    }
 
     @Test
     public void testWhereAndOrSql() {
@@ -337,7 +344,7 @@ public class AccountSqlTester {
                 "WHERE `id` >= 100 " +
                 "AND (`sex` = 1 OR `sex` = 2) " +
                 "OR (`age` IN (18, 19, 20) OR `user_name` LIKE '%michael%')"
-            ,query.toSQL());
+            , query.toSQL());
 
         System.out.println(query.toSQL());
     }
@@ -354,7 +361,7 @@ public class AccountSqlTester {
 
         Assert.assertEquals("SELECT * FROM `tb_account`" +
                 " WHERE `id` >= (SELECT `account_id` FROM `tb_article` WHERE `id` >= 100)"
-            ,query.toSQL());
+            , query.toSQL());
 
         System.out.println(query.toSQL());
     }
@@ -367,7 +374,7 @@ public class AccountSqlTester {
             .groupBy(ACCOUNT.USER_NAME);
 
         Assert.assertEquals("SELECT * FROM `tb_account` GROUP BY `user_name`"
-            ,query.toSQL());
+            , query.toSQL());
 
         System.out.println(query.toSQL());
     }
@@ -383,7 +390,7 @@ public class AccountSqlTester {
 
         Assert.assertEquals("SELECT * FROM `tb_account` AS `a`, `flex`.`tb_a01` AS `b` " +
                 "GROUP BY YEAR(`a`.`birthday`)"
-            ,query.toSQL());
+            , query.toSQL());
 
         System.out.println(query.toSQL());
     }
@@ -391,14 +398,14 @@ public class AccountSqlTester {
     //https://gitee.com/mybatis-flex/mybatis-flex/issues/I7EAY9
     @Test
     public void testGroup184() {
-        QueryWrapper query = QueryWrapper .create()
+        QueryWrapper query = QueryWrapper.create()
             .select(left(ACCOUNT.AGE, 6).as("regionCode"))
             .from(ACCOUNT)
             .groupBy("regionCode");
 
         Assert.assertEquals("SELECT LEFT(`age`, 6) AS `regionCode` FROM `tb_account` " +
                 "GROUP BY regionCode"
-            ,query.toSQL());
+            , query.toSQL());
 
         System.out.println(query.toSQL());
     }
@@ -414,7 +421,7 @@ public class AccountSqlTester {
         Assert.assertEquals("SELECT * FROM `tb_account` " +
                 "GROUP BY `user_name` " +
                 "HAVING `age` BETWEEN  18 AND 25 "
-            ,query.toSQL());
+            , query.toSQL());
 
         System.out.println(query.toSQL());
     }
@@ -431,7 +438,7 @@ public class AccountSqlTester {
                 "LEFT JOIN `tb_article` " +
                 "ON `tb_account`.`id` = `tb_article`.`account_id` " +
                 "WHERE `tb_account`.`age` >= 10"
-            ,query.toSQL());
+            , query.toSQL());
 
         System.out.println(query.toSQL());
     }
@@ -450,7 +457,7 @@ public class AccountSqlTester {
                 "LEFT JOIN `tb_article` " +
                 "ON `tb_account`.`id` = `tb_article`.`account_id` AND `tb_account`.`age` = 18 " +
                 "WHERE `tb_account`.`age` >= 10"
-            ,query.toSQL());
+            , query.toSQL());
 
         System.out.println(query.toSQL());
     }
@@ -471,7 +478,7 @@ public class AccountSqlTester {
                 "LEFT JOIN (SELECT * FROM `tb_article` WHERE `id` >= 100) AS `a` " +
                 "ON `tb_account`.`id` = a.id " +
                 "WHERE `tb_account`.`age` >= 10"
-            ,query.toSQL());
+            , query.toSQL());
 
         System.out.println(query.toSQL());
     }
@@ -496,7 +503,7 @@ public class AccountSqlTester {
                 "LEFT JOIN `base_admin_user_info` AS `burmc` " +
                 "ON  burmc.user_id = burm.created_by  " +
                 "WHERE  bui.is_valid = 3 "
-            ,query.toSQL());
+            , query.toSQL());
 
         System.out.println(query.toSQL());
     }
@@ -540,7 +547,7 @@ public class AccountSqlTester {
 
         Assert.assertEquals("SELECT * FROM `tb_account` " +
                 "ORDER BY `age` ASC, `user_name` DESC NULLS LAST"
-            ,query.toSQL());
+            , query.toSQL());
 
         System.out.println(query.toSQL());
     }
@@ -552,7 +559,7 @@ public class AccountSqlTester {
         String sql = dialect.forDeleteEntityById(tableInfo);
 
         Assert.assertEquals("UPDATE `tb_account` SET `is_delete` = 1 WHERE `id` = ?  AND `is_delete` = 0"
-            ,sql);
+            , sql);
 
         System.out.println(sql);
     }
@@ -564,14 +571,14 @@ public class AccountSqlTester {
     @Test
     public void testDeleteWithJoin() {
         QueryWrapper qw = QueryWrapper.create()
-                .from(ACCOUNT).leftJoin(ARTICLE).on(ACCOUNT.ID.eq(ARTICLE.ACCOUNT_ID))
-                .where(ACCOUNT.USER_NAME.eq("x"));
+            .from(ACCOUNT).leftJoin(ARTICLE).on(ACCOUNT.ID.eq(ARTICLE.ACCOUNT_ID))
+            .where(ACCOUNT.USER_NAME.eq("x"));
         IDialect dialect = new CommonsDialectImpl();
         String sql = dialect.forDeleteByQuery(qw);
         Assert.assertEquals("DELETE `tb_account` FROM `tb_account` " +
                 "LEFT JOIN `tb_article` ON `tb_account`.`id` = `tb_article`.`account_id` " +
                 "WHERE `tb_account`.`user_name` = ?"
-            ,sql);
+            , sql);
         System.out.println(sql);
     }
 
@@ -588,7 +595,7 @@ public class AccountSqlTester {
         String sql = dialect.forSelectByQuery(queryWrapper);
 
         Assert.assertEquals("SELECT * FROM `tb_account` WHERE `user_name` LIKE ? FOR UPDATE"
-            ,sql);
+            , sql);
 
         System.out.println(sql);
     }
@@ -611,7 +618,7 @@ public class AccountSqlTester {
                 "FROM `tb_account` " +
                 "WHERE `user_name` LIKE ? " +
                 "AND CONVERT(NVARCHAR(30), GETDATE(), 126) IN (SELECT `id` FROM `tb_account` WHERE `id` >= ?)"
-            ,sql);
+            , sql);
 
         System.out.println(sql);
     }
@@ -791,7 +798,7 @@ public class AccountSqlTester {
                 "AND `sex` = 0 " +
                 "AND `age` = 18 " +
                 "AND `is_normal` = false"
-            ,qw.toSQL());
+            , qw.toSQL());
 
         System.out.println(qw.toSQL());
     }
@@ -814,7 +821,7 @@ public class AccountSqlTester {
                 "ND `sex` = 0 " +
                 "AND `age` >= 18 " +
                 "AND `is_normal` = false"
-            ,qw.toSQL());
+            , qw.toSQL());
         System.out.println(qw.toSQL());
     }
 }