关于select *,count(distinct *) from...的问题！！求救！！

小妹把原SQL和执行结果附上，求帮助。1.SELECT COUNT(distinct b.person_id) FROM PS_BO_ROLE a ,PS_RD_PERSON b ,PS_TZ_JZY_INF_T c ,PS_TZ_PERS_EXT_TBL d WHERE a.bo_id = b.bo_id AND b.person_id = c.person_id AND b.person_id = d.person_id AND c.TZ_EMPL_STATUS=✀A✀ AND d.TZ_RYZT=✀Y✀ AND a.ROLE_TYPE_ID IN(✀400081✀,✀400076✀,✀400024✀,✀400065✀,✀400022✀,✀400064✀,✀400023✀);2.SELECT a.ROLE_TYPE_ID,COUNT(distinct b.person_id) FROM PS_BO_ROLE a ,PS_RD_PERSON b ,PS_TZ_JZY_INF_T c ,PS_TZ_PERS_EXT_TBL d WHERE a.bo_id = b.bo_id AND b.person_id = c.person_id AND b.person_id = d.person_id AND c.TZ_EMPL_STATUS=✀A✀ AND d.TZ_RYZT=✀Y✀ AND a.ROLE_TYPE_ID IN(✀400081✀,✀400076✀,✀400024✀,✀400065✀,✀400022✀,✀400064✀,✀400023✀) group by a.ROLE_TYPE_ID;这是两句SQL，基本相同，2在1的基础上多查询了一个字段罢了，可是结果却。。。1,2结果按顺序如下明显看到，查不重复全部是39条，可是多显示一个字段就变成47条了，，，求帮助，想得到的结果是总数39并且查询显示a.ROLE_TYPE_ID字段。。。急！！！！！！！！！两个SQL从“from”开始后面的都一样！！