请高手帮忙看看这个sql语句，多谢。

[xieyunchao]

有如下sql语句：

select zonecode as zonecode,
       sum(t.counts) as counts,
       sum(case
             when t.flwcount = 1 then
              1
             else
              0
           end) as sumflw1, --完成一次w
       sum(case
             when t.flwcount = 2 then
              1
             else
              0
           end) as sumflw2, --完成两次w
       sum(case
             when t.flwcount = 2 then
              1
             else
              0
           end) as sumflw3, --完成三次w
       sum(case
             when t.flwcount = 2 then
              1
             else
              0
           end) as sumflw4, --完成四次w
       sum(case
             when t.cd4count = 1 then
              1
             else
              0
           end) as cd41, --完成一次a检测
       sum(case
             when t.cd4count = 2 then
              1
             else
              0
           end) as cd42, --完成两次a检测
       sum(case
             when t.virunlncount = 1 then
              1
             else
              0
           end) as viruln1, --完成一次c检测
       sum(t.virunlnno) as noviruln ,--c被抑制 
       sum(t.initvirunlncount) as avirulnsum
  from (select /*+ index(a PK_AIDSZH_SGRA_ADULT_INFO) */ a.card_id as card_id,
               a.zonecode as zonecode,
               sum(case
                     when a.DT_ANTIVIRUS <= to_date('2008-12-31', 'yyyy-mm-dd') and
                          a.tm_create <= to_date('2006-06-30', 'yyyy-mm-dd') then
                      1
                     else
                      0
                   end) as counts,
               0 as flwcount, -- 当年完成w次数
               sum(case
                     when a.cd4 is not null and
                          a.DT_ANTIVIRUS <= to_date('2008-12-31', 'yyyy-mm-dd') and
                          a.tm_create <= to_date('2006-06-30', 'yyyy-mm-dd') then
                      1
                     else
                      0
                   end) as cd4count, --当年完成a检测数
               sum(case
                     when a.viruln is not null and
                          a.DT_ANTIVIRUS <= to_date('2008-12-31', 'yyyy-mm-dd') and
                          a.tm_create <= to_date('2006-06-30', 'yyyy-mm-dd') then
                      1
                     else
                      0
                   end) as virunlncount, --当年完成c次数
               0 as virunlnno,
                sum(case
                     when a.viruln is not null and
                          a.DT_ANTIVIRUS >= to_date('2009-01-01', 'yyyy-mm-dd') and
                          a.tm_create <= to_date('2006-06-30', 'yyyy-mm-dd') then
                      1
                     else
                      0
                   end) as initvirunlncount
          from aidszh_sgra_adult_info a
         where not exists (select ''
                  from aidszh_sgra_adult_flw m
                 where a.card_id = m.card_id) 
                 and a.zonecode like '11%'  
         group by a.card_id, a.zonecode
        union all
        select /*+ index(b PK_AIDISZH_SGRA_CHILD) index(c IDX_SGRA_adult_FLW) index(d IDX_SGRA_NEW_adult_IDCARD) */ b.card_id,
               b.zonecode as zonecode,
              /* sum(case
                     when b.DT_ANTIVIRUS <= to_date('2008-12-31', 'yyyy-mm-dd') and
                          c.tm_create <= to_date('2006-06-30', 'yyyy-mm-dd') and
                          c.is_flw = '1' and c.clinic_treatment != '3' and ( d.end_cause <>'1' and d.end_cause <>'2' or d.end_cause is null ) then
                      1
                     else
                      0
                   end) as counts, --总人数，但是产生了笛卡尔积 */
                   count(distinct(b.card_id)) --总人数，但是缺少限制条件
               sum(case
                     when c.card_id is not null and
                          b.DT_ANTIVIRUS <= to_date('2008-12-31', 'yyyy-mm-dd') and
                          c.tm_create <= to_date('2006-06-30', 'yyyy-mm-dd') and
                          c.is_flw = '1' and c.clinic_treatment != '3' and ( d.end_cause <>'1' and d.end_cause <>'2' or d.end_cause is null ) then
                      1
                     else
                      0
                   end) as flwcount, --当年完成w次数
               sum(case
                     when c.cd4 is not null and
                          b.DT_ANTIVIRUS <= to_date('2008-12-31', 'yyyy-mm-dd') and
                          c.tm_create <= to_date('2006-06-30', 'yyyy-mm-dd') and
                          c.is_flw = '1' and c.clinic_treatment != '3' and ( d.end_cause <>'1' and d.end_cause <>'2' or d.end_cause is null ) then
                      1
                     else
                      0
                   end) as cd4count, --完成a检测数
               sum(case
                     when c.viruln is not null and
                          b.DT_ANTIVIRUS <= to_date('2008-12-31', 'yyyy-mm-dd') and
                          c.tm_create <= to_date('2006-06-30', 'yyyy-mm-dd') and
                          c.is_flw = '1' and c.clinic_treatment != '3' and ( d.end_cause <>'1' and d.end_cause <>'2' or d.end_cause is null ) then
                      1
                     else
                      0
                   end) as virunlncount,
               sum(case
                     when b.viruln is not null and b.viruln <> '0' and
                          c.tm_create <= to_date('2006-06-30', 'yyyy-mm-dd') and
                          b.DT_ANTIVIRUS > to_date('2009-01-01', 'yyyy-mm-dd') and
                          c.viruln = '0' and
                          (c.dt_flworinterp - b.DT_ANTIVIRUS >= 180) and
                          (c.dt_flworinterp - b.DT_ANTIVIRUS <= 360) 
                           and
                          c.is_flw = '1' and c.clinic_treatment != '3' and ( d.end_cause <>'1' and d.end_cause <>'2' or d.end_cause is null ) then
                      1
                     else
                      0
                   end) as virunlnno, --c被抑制
                   sum(case
                     when b.viruln is not null and
                          b.DT_ANTIVIRUS >= to_date('2009-01-01', 'yyyy-mm-dd') and
                          c.tm_create <= to_date('2006-06-30', 'yyyy-mm-dd') and
                          c.is_flw = '1' and c.clinic_treatment != '3' and ( d.end_cause <>'1' and d.end_cause <>'2' or d.end_cause is null ) then
                      1
                     else
                      0
                   end) as initvirunlncount
          from aidszh_sgra_adult_info b, aidszh_sgra_adult_flw c,aidszh_sgra_adult_newstatus d
         where b.card_id = c.card_id and d.card_id=b.card_id 
         and b.zonecode like '11%'
         group by b.card_id, b.zonecode) t
 group by zonecode

上述sql中，我本想通过

sum(case
                     when b.DT_ANTIVIRUS <= to_date('2008-12-31', 'yyyy-mm-dd') and
                          c.tm_create <= to_date('2006-06-30', 'yyyy-mm-dd') and
                          c.is_flw = '1' and c.clinic_treatment != '3' and ( d.end_cause <>'1' and d.end_cause <>'2' or d.end_cause is null ) then
                      1
                     else
                      0
                   end) as counts

求出符合某个条件的b表的人数，不料b表和c表是一对多的关系，产生了笛卡尔积，统计的人数远远大于实际的人数。
后来我用count(distinct(b.card_id))求出b表中的人数，但是无法添加b表和c表的限制条件，只能求出全部的。事实上我想求出b表和c表tm_carete字段符合某个条件的b表的人数。
请大家指教！
对了，b表和c表是一对多的关系。b表和d表是一对一的关系。


如果上述sql不好改，那么请帮忙重写一个，要求如下：

我要求出符合某些条件的所有人数、完成1次w的人数、完成2次w的人数、完成1次c的人数、完成2次c的人数。

多谢。

[ACMAIN_CHM]

太长了，建议改变一下你的提问方式。

建议你列出你的表结构，并提供测试数据以及基于这些测试数据的所对应正确结果。
参考一下这个贴子的提问方式http://topic.csdn.net/u/20091130/20/8343ee6a-417c-4c2d-9415-fa46604a00cf.html

1. 你的 create table xxx .. 语句
2. 你的 insert into xxx ... 语句
3. 结果是什么样，（并给以简单的算法描述）
4. 你用的数据库名称和版本(经常有人在MS SQL server版问 MySQL)

这样想帮你的人可以直接搭建和你相同的环境，并在给出方案前进行测试，避免文字描述理解上的误差。

[xieyunchao]

在一位热心朋友的帮助下，sql做了一点小的更改，就查出了正确的结果：加了一个decode函数，多加了一列couont1.
sql如下：

select zonecode as zonecode,
       sum(t.count1)+sum(decode(t.counts,0,0,1)) as counts,
       sum(case
             when t.flwcount = 1 then
              1
             else
              0
           end) as sumflw1, --完成一次w
       sum(case
             when t.flwcount = 2 then
              1
             else
              0
           end) as sumflw2, --完成两次w
       sum(case
             when t.flwcount = 2 then
              1
             else
              0
           end) as sumflw3, --完成三次w
       sum(case
             when t.flwcount = 2 then
              1
             else
              0
           end) as sumflw4, --完成四次w
       sum(case
             when t.cd4count = 1 then
              1
             else
              0
           end) as cd41, --完成一次a检测
       sum(case
             when t.cd4count = 2 then
              1
             else
              0
           end) as cd42, --完成两次a检测
       sum(case
             when t.virunlncount = 1 then
              1
             else
              0
           end) as viruln1, --完成一次c检测
       sum(t.virunlnno) as noviruln ,--c被抑制 
       sum(t.initvirunlncount) as avirulnsum
  from (select /*+ index(a PK_AIDSZH_SGRA_ADULT_INFO) */ a.card_id as card_id,
               a.zonecode as zonecode,
               0 as counts,
               sum(case
                     when a.DT_ANTIVIRUS <= to_date('2008-12-31', 'yyyy-mm-dd') and
                          a.tm_create <= to_date('2006-06-30', 'yyyy-mm-dd') then
                      1
                     else
                      0
                   end) as count1,
               0 as flwcount, -- 当年完成w次数
               sum(case
                     when a.cd4 is not null and
                          a.DT_ANTIVIRUS <= to_date('2008-12-31', 'yyyy-mm-dd') and
                          a.tm_create <= to_date('2006-06-30', 'yyyy-mm-dd') then
                      1
                     else
                      0
                   end) as cd4count, --当年完成a检测数
               sum(case
                     when a.viruln is not null and
                          a.DT_ANTIVIRUS <= to_date('2008-12-31', 'yyyy-mm-dd') and
                          a.tm_create <= to_date('2006-06-30', 'yyyy-mm-dd') then
                      1
                     else
                      0
                   end) as virunlncount, --当年完成c次数
               0 as virunlnno,
                sum(case
                     when a.viruln is not null and
                          a.DT_ANTIVIRUS >= to_date('2009-01-01', 'yyyy-mm-dd') and
                          a.tm_create <= to_date('2006-06-30', 'yyyy-mm-dd') then
                      1
                     else
                      0
                   end) as initvirunlncount
          from aidszh_sgra_adult_info a
         where not exists (select ''
                  from aidszh_sgra_adult_flw m
                 where a.card_id = m.card_id) 
                 and a.zonecode like '11%'  
         group by a.card_id, a.zonecode
        union all
        select /*+ index(b PK_AIDISZH_SGRA_CHILD) index(c IDX_SGRA_adult_FLW) index(d IDX_SGRA_NEW_adult_IDCARD) */ b.card_id,
               b.zonecode as zonecode,
              sum(case
                     when b.DT_ANTIVIRUS <= to_date('2008-12-31', 'yyyy-mm-dd') and
                          c.tm_create <= to_date('2006-06-30', 'yyyy-mm-dd') and
                          c.is_flw = '1' and c.clinic_treatment != '3' and ( d.end_cause <>'1' and d.end_cause <>'2' or d.end_cause is null ) then
                      1
                     else
                      0
                   end) as counts, 
                   0 as count1,
               sum(case
                     when c.card_id is not null and
                          b.DT_ANTIVIRUS <= to_date('2008-12-31', 'yyyy-mm-dd') and
                          c.tm_create <= to_date('2006-06-30', 'yyyy-mm-dd') and
                          c.is_flw = '1' and c.clinic_treatment != '3' and ( d.end_cause <>'1' and d.end_cause <>'2' or d.end_cause is null ) then
                      1
                     else
                      0
                   end) as flwcount, --当年完成w次数
               sum(case
                     when c.cd4 is not null and
                          b.DT_ANTIVIRUS <= to_date('2008-12-31', 'yyyy-mm-dd') and
                          c.tm_create <= to_date('2006-06-30', 'yyyy-mm-dd') and
                          c.is_flw = '1' and c.clinic_treatment != '3' and ( d.end_cause <>'1' and d.end_cause <>'2' or d.end_cause is null ) then
                      1
                     else
                      0
                   end) as cd4count, --完成a检测数
               sum(case
                     when c.viruln is not null and
                          b.DT_ANTIVIRUS <= to_date('2008-12-31', 'yyyy-mm-dd') and
                          c.tm_create <= to_date('2006-06-30', 'yyyy-mm-dd') and
                          c.is_flw = '1' and c.clinic_treatment != '3' and ( d.end_cause <>'1' and d.end_cause <>'2' or d.end_cause is null ) then
                      1
                     else
                      0
                   end) as virunlncount,
               sum(case
                     when b.viruln is not null and b.viruln <> '0' and
                          c.tm_create <= to_date('2006-06-30', 'yyyy-mm-dd') and
                          b.DT_ANTIVIRUS > to_date('2009-01-01', 'yyyy-mm-dd') and
                          c.viruln = '0' and
                          (c.dt_flworinterp - b.DT_ANTIVIRUS >= 180) and
                          (c.dt_flworinterp - b.DT_ANTIVIRUS <= 360) 
                           and
                          c.is_flw = '1' and c.clinic_treatment != '3' and ( d.end_cause <>'1' and d.end_cause <>'2' or d.end_cause is null ) then
                      1
                     else
                      0
                   end) as virunlnno, --c被抑制
                   sum(case
                     when b.viruln is not null and
                          b.DT_ANTIVIRUS >= to_date('2009-01-01', 'yyyy-mm-dd') and
                          c.tm_create <= to_date('2006-06-30', 'yyyy-mm-dd') and
                          c.is_flw = '1' and c.clinic_treatment != '3' and ( d.end_cause <>'1' and d.end_cause <>'2' or d.end_cause is null ) then
                      1
                     else
                      0
                   end) as initvirunlncount
          from aidszh_sgra_adult_info b, aidszh_sgra_adult_flw c,aidszh_sgra_adult_newstatus d
         where b.card_id = c.card_id and d.card_id=b.card_id 
         and b.zonecode like '11%'
         group by b.card_id, b.zonecode) t
 group by zonecode

[crazylaa]

学习

[snowfox326]

select zonecode as zonecode,
sum(t.counts) as counts,
sum(case
when t.flwcount = 1 then
1
else
0
end) as sumflw1, --完成一次w
sum(case
when t.flwcount = 2 then
1
else
0
end) as sumflw2, --完成两次w
sum(case
when t.flwcount = 2 then
1
else
0
end) as sumflw3, --完成三次w
sum(case
when t.flwcount = 2 then
1
else
0
end) as sumflw4, --完成四次w
sum(case
when t.cd4count = 1 then
1
else
0
end) as cd41, --完成一次a检测
sum(case
when t.cd4count = 2 then
1
else
0
end) as cd42, --完成两次a检测
sum(case
when t.virunlncount = 1 then
1
else
0
end) as viruln1, --完成一次c检测
sum(t.virunlnno) as noviruln, --c被抑制
sum(t.initvirunlncount) as avirulnsum
from (select /*+ index(a PK_AIDSZH_SGRA_ADULT_INFO) */
a.card_id as card_id,
a.zonecode as zonecode,
sum(case
when a.DT_ANTIVIRUS <= to_date('2008-12-31', 'yyyy-mm-dd') and
a.tm_create <= to_date('2006-06-30', 'yyyy-mm-dd') then
1
else
0
end) as counts,
0 as flwcount, -- 当年完成w次数
sum(case
when a.cd4 is not null and
a.DT_ANTIVIRUS <= to_date('2008-12-31', 'yyyy-mm-dd') and
a.tm_create <= to_date('2006-06-30', 'yyyy-mm-dd') then
1
else
0
end) as cd4count, --当年完成a检测数
sum(case
when a.viruln is not null and
a.DT_ANTIVIRUS <= to_date('2008-12-31', 'yyyy-mm-dd') and
a.tm_create <= to_date('2006-06-30', 'yyyy-mm-dd') then
1
else
0
end) as virunlncount, --当年完成c次数
0 as virunlnno,
sum(case
when a.viruln is not null and
a.DT_ANTIVIRUS >= to_date('2009-01-01', 'yyyy-mm-dd') and
a.tm_create <= to_date('2006-06-30', 'yyyy-mm-dd') then
1
else
0
end) as initvirunlncount
from aidszh_sgra_adult_info a
where not exists (select ''
from aidszh_sgra_adult_flw m
where a.card_id = m.card_id)
and a.zonecode like '11%'
group by a.card_id, a.zonecode
union all
select /*+ index(b PK_AIDISZH_SGRA_CHILD) index(c IDX_SGRA_adult_FLW) index(d IDX_SGRA_NEW_adult_IDCARD) */
b.card_id,
b.zonecode as zonecode,
/* sum(case
when b.DT_ANTIVIRUS <= to_date('2008-12-31', 'yyyy-mm-dd') and
c.tm_create <= to_date('2006-06-30', 'yyyy-mm-dd') and
c.is_flw = '1' and c.clinic_treatment != '3' and ( d.end_cause <>'1' and d.end_cause <>'2' or d.end_cause is null ) then
1
else
0
end) as counts, --总人数，但是产生了笛卡尔积 */
count(distinct(b.card_id)) --总人数，但是缺少限制条件
sum(case
when c.card_id is not null and
b.DT_ANTIVIRUS <= to_date('2008-12-31', 'yyyy-mm-dd') and
c.tm_create <= to_date('2006-06-30', 'yyyy-mm-dd') and
c.is_flw = '1' and c.clinic_treatment != '3' and
(d.end_cause <> '1' and d.end_cause <> '2' or
d.end_cause is null) then
1
else
0
end) as flwcount, --当年完成w次数
sum(case
when c.cd4 is not null and
b.DT_ANTIVIRUS <= to_date('2008-12-31', 'yyyy-mm-dd') and
c.tm_create <= to_date('2006-06-30', 'yyyy-mm-dd') and
c.is_flw = '1' and c.clinic_treatment != '3' and
(d.end_cause <> '1' and d.end_cause <> '2' or
d.end_cause is null) then
1
else
0
end) as cd4count, --完成a检测数
sum(case
when c.viruln is not null and
b.DT_ANTIVIRUS <= to_date('2008-12-31', 'yyyy-mm-dd') and
c.tm_create <= to_date('2006-06-30', 'yyyy-mm-dd') and
c.is_flw = '1' and c.clinic_treatment != '3' and
(d.end_cause <> '1' and d.end_cause <> '2' or
d.end_cause is null) then
1
else
0
end) as virunlncount,
sum(case
when b.viruln is not null and b.viruln <> '0' and
c.tm_create <= to_date('2006-06-30', 'yyyy-mm-dd') and
b.DT_ANTIVIRUS > to_date('2009-01-01', 'yyyy-mm-dd') and
c.viruln = '0' and (c.dt_flworinterp - b.DT_ANTIVIRUS >= 180) and
(c.dt_flworinterp - b.DT_ANTIVIRUS <= 360) and c.is_flw = '1' and
c.clinic_treatment != '3' and
(d.end_cause <> '1' and d.end_cause <> '2' or
d.end_cause is null) then
1
else
0
end) as virunlnno, --c被抑制
sum(case
when b.viruln is not null and
b.DT_ANTIVIRUS >= to_date('2009-01-01', 'yyyy-mm-dd') and
c.tm_create <= to_date('2006-06-30', 'yyyy-mm-dd') and
c.is_flw = '1' and c.clinic_treatment != '3' and
(d.end_cause <> '1' and d.end_cause <> '2' or
d.end_cause is null) then
1
else
0
end) as initvirunlncount
from aidszh_sgra_adult_info b,
(select card_id,
tm_create,
viruln,
dt_flworinterp,
is_flw,
clinic_treatment
from aidszh_sgra_adult_flw
group by card_id,
tm_create,
viruln,
dt_flworinterp,
is_flw,
clinic_treatment) c,
(select card_id, end_cause
from aidszh_sgra_adult_newstatus
group by card_id, end_cause) d
where b.card_id = c.card_id
and d.card_id = b.card_id
and b.zonecode like '11%'
group by b.card_id, b.zonecode) t
group by zonecode


这里你得注意一点,由于我没有你的数据表不能确定
(select card_id,
tm_create,
viruln,
dt_flworinterp,
is_flw,
clinic_treatment
from aidszh_sgra_adult_flw
group by card_id,
tm_create,
viruln,
dt_flworinterp,
is_flw,
clinic_treatment) c
(select card_id, end_cause
from aidszh_sgra_adult_newstatus
group by card_id, end_cause) d
这两个表按这些条件group by 后是不是每个card_id只有一条记录

[narsh]

太长了，建议把无用的语句去掉，那样能更快的得到你想要的回复。

[snowfox326]

看你的这SQL语法有问题
sum(case
when b.DT_ANTIVIRUS <= to_date('2008-12-31', 'yyyy-mm-dd') and
c.tm_create <= to_date('2006-06-30', 'yyyy-mm-dd') and
c.is_flw = '1' and c.clinic_treatment != '3' and ( d.end_cause <>'1' and d.end_cause <>'2' or d.end_cause is null ) then
1
else
0
end) as counts
不知道你要的是什么结果
（d.end_cause <>'1' and （d.end_cause <>'2' or d.end_cause is null））

（（d.end_cause <>'1' and d.end_cause <>'2'） or d.end_cause is null）

[huangyunzeng2008]

太长了，没有办法帮助你啊！或者是提出你的需求看看大家还有没有更好的方法！

[dreamingbus]

有点长。。没耐心看了。。。抱歉