Oracle SQL统计各单位及其子级单位用户总数

  select sum(t.ucount)
      from (select count(1) as ucount, uinfo.unit_code, uinfo.unit_name
              from t_user bs
             inner join (select unit_code, unit_name
                          from t_unit_info
                         start with unit_code = #{unitCode}
                        connect by prior unit_code = para_unit_code) uinfo
                on bs.unit_code = uinfo.unit_code
             group by uinfo.unit_code, uinfo.unit_name) t;

create or replace function FU_UNIT_USER_COUNT(unitCode in varchar2)
  RETURN NUMBER IS
  v_Value number(9,1);
BEGIN
    select sum(t.ucount) into v_Value
      from (select count(1) as ucount, uinfo.unit_code, uinfo.unit_name
              from t_user bs
             inner join (select unit_code, unit_name
                          from lzcity_approve_unit_info
                         start with unit_code = unitCode
                        connect by prior unit_code = para_unit_code) uinfo
                on bs.unit_code = uinfo.unit_code
             group by uinfo.unit_code, uinfo.unit_name) t;
  RETURN v_Value;
END;

select FH_UNIT_USER_COUNT('15803') from dual;

select FH_UNIT_USER_COUNT(uinfo.unit_code) as 用户总数,
       uinfo.unit_code as 单位编码,
       uinfo.unit_name as 厅单位名称
  from t_unit_info uinfo
 group by uinfo.unit_code, uinfo.unit_name
 order by 用户总数 desc nulls last