Oracle SQL - 按特定顺序列出父表和子表中的记录

Question

我有两个表T1（Parent_Table）和T2（Child_Table）

T1：

ID | LANG | ASSURANCE | VAL |
 1 |  L1  |   ASSR1   |  0  |
 1 |  L2  |   ASSR2   |  1  |
 1 |  L3  |   ASSR3   |  5  |

Taq酶：

ID | LANG | File | ASSURANCE | VAL |
 1 |  L1  |  F1  |   ASSR1   |  0  |
 1 |  L1  |  F2  |   ASSR1   |  4  |
 1 |  L2  |  F3  |   ASSR2   |  8  |
 1 |  L2  |  F4  |   ASSR2   |  3  |
 1 |  L3  |  F5  |   ASSR3   |  7  |
 1 |  L3  |  F6  |   ASSR3   |  0  |

预期产量：

ID | File | ASSURANCE | VAL |
 1 |  L1  |   ASSR1   |  0  | - Matched row from T1 for id=1 and lang=l1 
 1 |  F1  |   ASSR1   |  0  | - Matched row from T2 for id=1 and lang=l1 
 1 |  F2  |   ASSR1   |  4  | - Matched row from T2 for id=1 and lang=l1 
 1 |  L2  |   ASSR2   |  1  | - Matched row from T1 for id=1 and lang=l2
 1 |  F3  |   ASSR2   |  8  | - Matched row from T2 for id=1 and lang=l2
 1 |  F4  |   ASSR2   |  3  | - Matched row from T2 for id=1 and lang=l2
 1 |  L3  |   ASSR3   |  5  | - Matched row from T1 for id=1 and lang=l3
 1 |  F5  |   ASSR3   |  7  | - Matched row from T2 for id=1 and lang=l3
 1 |  F6  |   ASSR3   |  0  | - Matched row from T2 for id=1 and lang=l3

需求：

我想通过T1遍历id = 1并且对于每个lang，我想首先输出该行（来自T1）然后在T2中遍历id和当前lang以及T2中的匹配记录列表（用于id和current） lang）然后继续T1中的下一个lang直到所有langs都在T1处理。

是否可以使用单个Oracle SQL查询来实现它？

谢谢。

Answer 1

试试这个：

with 
    T1 as (
            select 1 as id, 'L1' as LANG, 'ASSR1' as assurance, 0 as VAL from dual union
            select 1, 'L2', 'ASSR2',1 from dual union
            select 1, 'L3','ASSR3',5 from dual),
    T2 as (
            select 1 as id , 'L1' as lang, 'F1' as "FILE", 'ASSR1' as assurance, 0 as val from dual union
            select 1,'L1','F2','ASSR1',4 from dual union
            select 1,'L2','F3','ASSR2',8 from dual union
            select 1,'L2','F4','ASSR2',3 from dual union
            select 1,'L3','F5','ASSR3',7 from dual union
            select 1,'L3','F6','ASSR3',0 from dual),
    T3 as (select t2.id, t2.lang, t2."FILE", t2.assurance, t2.val, row_number() over (partition by t2.id, t2.lang order by t2."FILE") as pos
           from T2    
             inner join t1 on t1.id = t2.id and t1.lang = t2.lang)
select t1.id, t1.lang, t1.lang as "FILE", t1.assurance, t1.val, 0 as pos from T1
union
select t3.id, t3.lang, t3."FILE", t3.assurance, t3.val,  t3.pos
from t3
order by id,lang,pos

输出：

ID  LANG    FILE    ASSURANCE   VAL POS
1   L1  L1  ASSR1   0   0
1   L1  F1  ASSR1   0   1
1   L1  F2  ASSR1   4   2
1   L2  L2  ASSR2   1   0
1   L2  F3  ASSR2   8   1
1   L2  F4  ASSR2   3   2
1   L3  L3  ASSR3   5   0
1   L3  F5  ASSR3   7   1
1   L3  F6  ASSR3   0   2

Answer 2

使用union all粘贴表格，添加有关行源的信息。对于第一个表，还将列lang添加为file_。最后排序这个联盟。

select id, file_, assurance, val
  from (
    select id, lang, lang file_, assurance, val, 't1' source from t1 where id = 1
    union all
    select id, lang, file_, assurance, val, 't2' source from t2 where id = 1)
  order by lang, source, file_

dbfiddle demo

Answer 3

像这样的东西？

SQL> with t1 (id, lang, assurance, val) as
  2  (select 1, 'L1', 'assr1', 0 from dual union all
  3   select 1, 'L2', 'assr2', 1 from dual union all
  4   select 1, 'L3', 'assr3', 5 from dual
  5  ),
  6    t2 (id, lang, cfile, assurance, val) as
  7  (select 1, 'L1', 'F1', 'assr1', 0 from dual union all
  8   select 1, 'L1', 'F2', 'assr1', 4 from dual union all
  9   select 1, 'L2', 'F3', 'assr2', 8 from dual union all
 10   select 1, 'L2', 'F4', 'assr2', 3 from dual union all
 11   select 1, 'L3', 'F5', 'assr3', 7 from dual union all
 12   select 1, 'L3', 'F6', 'assr3', 0 from dual
 13  ),
 14    inter as
 15  (select t1.id, t1.lang, t1.lang cfile, t1.assurance, t1.val from t1
 16   union all
 17   select t2.id, t2.lang, t2.cfile, t2.assurance, t2.val from t2
 18  )
 19  select id, cfile, assurance, val
 20  from inter
 21  order by id, lang, cfile desc;

        ID CF ASSUR        VAL
---------- -- ----- ----------
         1 L1 assr1          0
         1 F2 assr1          4
         1 F1 assr1          0
         1 L2 assr2          1
         1 F4 assr2          3
         1 F3 assr2          8
         1 L3 assr3          5
         1 F6 assr3          0
         1 F5 assr3          7

9 rows selected.

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