Question

我有下表，在这里，我想得到值STAT_NEW ='发送到xxxx项目团队'的计数。在发生值stat_new ='Sent to VMO'之前，我们需要计数值。

SQL> Select * from sample_test;


ID  CONTRACT_ID                STAT_NEW                                 UPD_DT  
-----------------------------  -------------------------------------- ----------
0   CR 01 to MWO 1            Sent to xxxx Project Team               11-AUG-13
1   CR 01 to MWO 1            Sent to xxxx Project Team               11-AUG-13 
2   CR 01 to MWO 1            Sent to xxxx Project Team               11-AUG-13
3   CR 01 to MWO 1            Sent to VMO                             12-AUG-13 
4   CR 01 to MWO 1            Sent to xxxx Project Team               11-AUG-13 
5   CR 01 to MWO 1            Sent to xxxx Project Team               11-AUG-13
6   CR 01 to MWO 1            Sent to VMO                             12-AUG-13

7   CR 01 to MWO 2            Sent to xxxx Project Team               11-AUG-13 
8   CR 01 to MWO 2            Sent to xxxx Project Team               11-AUG-13 
9   CR 01 to MWO 2            Sent to xxxx Project Team               11-AUG-13 
10  CR 01 to MWO 2            Sent to VMO                             12-AUG-13
11  CR 01 to MWO 3            Sent to xxxx Project Team               12-AUG-13 
12  CR 01 to MWO 3            Sent to xxxx Project Team               12-AUG-13
13  CR 01 to MWO 3            Sent to VMO                             13-AUG-13

7 rows selected

我已尝试过下面的方案，如果给出了特定的合同ID，如果只有一个发送给VMO，则下面的方案正在运行。

select count(*) from sample_test where upd_dt <= (select UPD_DT from sample_test where stat_new='Sent to VMO' and contract_id='CR 01 to MWO 1') AND stat_new='Sent to xxxx Project Team';

我的预期输出如下......

CONTRACT_ID      count of STAT_NEW='Sent to xxxx Project Team'
--------------   ------------
CR 01 to MWO 1    3
CR 01 to MWO 1    2
CR 01 to MWO 2    3
CR 01 to MWO 3    2

Answer 1

这比看起来有点棘手。以下应该有效：

select contract_id, sum(case when stat = 'Sent to xxxx Project Team' then 1 else 0 end) 
from (select t.*,
             sum(case when stat = 'Sent to VMO' then 1 else 0 end) over
                 (partition by Contract_Id order by id desc) as SentVMOcount
      from sample_test t
     ) t
where sentVMOcount = 1
group by contract_id;

这里的关键是sentVMOcount。这使用累积和解析函数根据该行之后发生的'Sent to VMO'状态枚举行。因此，所有最终行的计数都为1.外部查询选择这些并进行适当的聚合。

Answer 2

试试这个

SELECT CONTRACT_ID,COUNT(STAT_NEW) STAT_NEW_COUNT FROM
(
    SELECT t.*
        ,(SELECT COUNT(id) FROM #MyTable WHERE STAT_NEW='Sent to VMO' AND ID < t.ID) AS cnt
    from #MyTable t
    WHERE STAT_NEW<>'Sent to VMO'
) tt
GROUP BY CONTRACT_ID,cnt

DEMO

<强>输出

CONTRACT_ID      STAT_NEW_COUNT
CR 01 to MWO 1     3
CR 01 to MWO 1     2
CR 01 to MWO 2     3
CR 01 to MWO 3     2

需要在同一个表中计数值

2 个答案: