mysql分组统计，按照时间排序

select  t.* from 
  (select * from 
　　myt_market_class_draw_img 
       where uid = #{uid} and clz_id = #{clzId} and clz_type = #{clzType}
      　　　　and delete_flag = 1 order by insertTime desc 
　　) t

 GROUP BY play_id ORDER BY insertTime DESC

　条件写在内部