Mybatis 使用distinct问题

使用插件自动生成sql，具体如下

 <resultMap id="versioncodeResult" type="java.lang.String" >
    <result column="code" property="code" jdbcType="VARCHAR" />
  resultMap>
  
<select id="selectVersionCodeByParam" parameterType="com.entity.OdpsrequesttoidbtableParam" resultMap="versioncodeResult">
    
    select
    <if test="distinct">
      distinct
    if>
    versioncode as code
    <include refid="Base_Column_List" />
    from odpsrequesttoidbtable
    <if test="_parameter != null">
      <include refid="Param_Where_Clause" />
    if>
    <if test="orderByClause != null">
      order by ${orderByClause}
    if>
    <if test="page">
      limit #{pageIndex},#{pageSize}
    if>
  select>

始终查询不到我想要的结果

序号	code
1	266
2	267

查看具体生成的sql发现，少去掉了一行

###
 SQL: select             distinct           versioncode as code    
 id, gmt_create, gmt_modified, apiname, pkey, versioncode, appkey      
 from odpsrequesttoidbtable                         WHERE (  appkey = ? )

修复后的sql如下,去掉"Base_Column_List" ：

<select id="selectVersionCodeByParam" parameterType="com.entity.OdpsrequesttoidbtableParam" resultMap="versioncodeResult">
    
    select
    <if test="distinct">
      distinct
    if>
    versioncode as code
    from odpsrequesttoidbtable
    <if test="_parameter != null">
      <include refid="Param_Where_Clause" />
    if>
    <if test="orderByClause != null">
      order by ${orderByClause}
    if>
    <if test="page">
      limit #{pageIndex},#{pageSize}
    if>
  select>