oracle解决多表关联分组查询问题

做了一个功能需要分组查询，同时查询A表分组查询的ID需要关联B表的数据，本来想两个表关联查询，但是报group by 语法不正确。所以做了以下修改。

select count(*), cindexid,(select vindexcode from comindex where pk_index =cindexid) as vindexcode ,iquesttype from rqt_examquest where pk_examquest in(

select cexamquestid from rqt_examquest_b2 where cjobtypeid = '1000LSZY123456100001' or cjobtypeid='1001LSZYp3U34Bxgv7V4'

) group by cindexid , iquesttype having iquesttype = 1 or iquesttype = 2 or iquesttype = 3 order by cindexid