mybatis中if标签的用法中，请问下面的代码是否符合语法标准

• select case
  
  when PBD_STATION_NAME ='高中毕业' or PBD_STATION_NAME ='中专毕业' or PBD_STATION_NAME ='专业证书班' then '大专以下'
  
  
  when PBD_STATION_NAME ='党校大专毕业' or PBD_STATION_NAME ='专科毕业' then '大专'
  
  
  when PBD_STATION_NAME ='党校大学毕业' or PBD_STATION_NAME ='大学毕业'or PBD_STATION_NAME ='双学士' or PBD_STATION_NAME ='大学普通班' or PBD_STATION_NAME ='大学本科...' or PBD_STATION_NAME ='大学结业' then '本科'
  
  
  when PBD_STATION_NAME ='党校研究生毕业' or PBD_STATION_NAME ='研究生毕业' or PBD_STATION_NAME ='在职攻读专业硕士学位' or PBD_STATION_NAME ='同等学力申请硕士学位' or PBD_STATION_NAME ='研究生结业' then '本科以上' end as "name"
  
  ,count(*) as "value"
  from
  "PRISON"."V_POLICE_BASE_DTLS"
  where
  PBD_STATION_NAME !=''

              AND PBD_CUS_NUMBER = '1101'
  group by case
      <if test='station =="大专以下"'>
      when PBD_STATION_NAME ='高中毕业' or PBD_STATION_NAME ='中专毕业' or PBD_STATION_NAME ='专业证书班' then '大专以下'
      <if>
      <if test='station =="大专"'>
      when PBD_STATION_NAME ='党校大专毕业' or PBD_STATION_NAME ='专科毕业' then '大专'
      <if>
      <if test='station =="本科"'>
      when PBD_STATION_NAME ='党校大学毕业' or PBD_STATION_NAME ='大学毕业'or PBD_STATION_NAME ='双学士' or PBD_STATION_NAME ='大学普通班' or PBD_STATION_NAME ='大学本科...' or PBD_STATION_NAME ='大学结业' then '本科'
      <if>
      <if test='station =="本科"'>
      when PBD_STATION_NAME ='党校研究生毕业' or PBD_STATION_NAME ='研究生毕业' or PBD_STATION_NAME ='在职攻读专业硕士学位' or PBD_STATION_NAME ='同等学力申请硕士学位' or PBD_STATION_NAME ='研究生结业' then '本科以上' end as "name"
      <if>
       end
  order by "name" desc
  

https://www.cnblogs.com/junjie2019/p/10570215.html