造成错误的原因是*Mapper.xml 配置文件，insert 语句写入重复字段

错误配置文件展示：

<insert id="insertSelective" parameterType="com.***.domain.SysSetting">
    insert into sys_setting
    <trim prefix="(" suffix=")" suffixOverrides=",">
      <if test="sid != null">
        sid,
      </if>
      <if test="sid != null">
        sid,
      </if>
      <if test="settingType != null">
        setting_type,
      </if>
      <if test="settingContent != null">
        setting_content,
      </if>
      <if test="settingFileSid != null">
        setting_file_sid,
      </if>
      <if test="settingNo != null">
        setting_no,
      </if>
      <if test="createDt != null">
        create_dt,
      </if>
      <if test="createBy != null">
        create_by,
      </if>
      
      <if test="updateBy != null">
        update_by,
      </if>
   
      <if test="dataType != null">
        data_type,
      </if>
    </trim>
    <trim prefix="values (" suffix=")" suffixOverrides=",">
      <if test="sid != null">
        #{sid,jdbcType=VARCHAR},
      </if>
      <if test="settingType != null">
        #{settingType,jdbcType=VARCHAR},
      </if>
      <if test="settingContent != null">
        #{settingContent,jdbcType=VARCHAR},
      </if>
      <if test="settingFileSid != null">
        #{settingFileSid,jdbcType=VARCHAR},
      </if>
      <if test="settingNo != null">
        #{settingNo,jdbcType=VARCHAR},
      </if>
      <if test="createDt != null">
        #{createDt,jdbcType=TIMESTAMP},
      </if>
      <if test="createBy != null">
        #{createBy,jdbcType=VARCHAR},
      </if>
      <if test="updateDt != null">
        #{updateDt,jdbcType=TIMESTAMP},
      </if>
      <if test="updateBy != null">
        #{updateBy,jdbcType=VARCHAR},
      </if>
      <if test="dataType != null">
        #{dataType,jdbcType=VARCHAR},
      </if>
    </trim>
  </insert>

这份动态xml 配置文件包含两个sid 是导致: Column ‘sid‘ specified twice 错误原因