选择进入和退出记录表中的每个条目

Question

以下是从表中的示例中，我有

F_ID  R_ID  DATE Col_A Col_B Col_C 
12  158  20161008 01  99  99 
12  158  20161012 01  01  99 
12  158  20161019 01  02  10 
12  158  20161022 99  01  10 
12  160  20161006 01  99  01 
12  160  20161011 99  01  99 
12  160  20161017 99  01  10 
17  167  20161013 99  01  01 
17  167  20161016 99  02  99 
17  167  20161020 02  01  10 
17  174  20161010 99  01  01 
17  174  20161012 01  02  11 
17  174  20161017 99  99  10 

我想选择这样，我得到以下结果

F_ID R_ID DATE  Col_A Col_B Col_C 
12  158 20161008 01  01  99  - Entry record 
12  158 20161022 99  01  10  - Exit Record 
12  160 20161006 01  99  01  - Entry record 
12  160 20161017 99  01  10  - Exit Record 
17  167 20161013 99  01  01  - Entry record 
17  167 20161020 02  01  10  - Exit Record 
17  174 20161010 99  01  01  - Entry record 
17  174 20161017 99  99  10  - Exit Record 

For each F_ID, R_ID: 
When Col_A or Col_B = '01' and Col_C <>'10' - **It is an entry record** 
When Col_C = '10' - **It is an exit record** 

逻辑这里是

1. Select the earliest entry record 
    **and** 
2. Select the latest exit record for each F_ID, R_ID 

我想利用工会类似下面的...

Select * from tbl1 T 
where 
T.Col_C = '10' and 
T.DATE = (select max(T2.DATE) from tbl1 T2 
           where 
           T2.Col_C = '10' and 
           T2.R_ID = T.R_ID 
           T2.F_ID = T.F_ID 
     ) 

union 

Select * from tbl1 K 
where 
(K.Col_A = '01' or K.Col_B = '01') and 
K.Col_C <> '10' and 
K.DATE = (select min(K2.DATE) from tbl1 K2 where 
         (K2.Col_A = '01' or K2.Col_B = '01') and 
         K2.Col_C <> '10' and 
         K2.R_ID = K.R_ID 
         K2.F_ID = K.F_ID 
     ) 

但是像我这样在同一张桌子上用自联接做的联合正在给我返回一个垃圾数据。

Answer 1

如果我理解正确的，你需要这样的：

SELECT * FROM (
    SELECT T1.*, ROW_NUMBER() OVER(PARTITION BY F_ID , R_ID order by DATE) rn, 'Entry record' as rec FROM (
     SELECT * FROM your_table WHERE (Col_A = '01' or Col_B = '01') and Col_C <> '10' 
    ) T1 
    union all 
    SELECT T2.*, ROW_NUMBER() OVER(PARTITION BY F_ID , R_ID order by DATE DESC) rn , 'Exit record' as rec FROM (
     SELECT * FROM your_table WHERE Col_C = '10' 
    ) T2 
) t3 
where rn = 1 

编辑

更简化的版本（感谢@ThorstenKettner）

SELECT * FROM (
    SELECT your_table.*, ROW_NUMBER() OVER(PARTITION BY F_ID, R_ID order by DATE) as rn, 'Entry record' as rec FROM your_table WHERE (Col_A = '01' or Col_B = '01') and Col_C <> '10' 
    union all 
    SELECT your_table.*, ROW_NUMBER() OVER(PARTITION BY F_ID, R_ID order by DATE DESC) as rn, 'Exit record' as rec FROM your_table WHERE Col_C = '10' 
) t3 
where rn = 1 
ORDER BY F_ID, R_ID, DATE