Question

Erwin，我对正确的例子和数据不好。请根据需要在下面找到包含所有数据的更新查询。我们有主表，其中包含资产ID之间的所有关系，如下所示。资产层次是S1，其具有F11，F12，F13，并且内部F11具有D111，D112，D113，类似地，F12具有D121，D122，D123等。

MASTER TABLE AND INSERT SCRIPTS

请参阅链接sqlfiddle

CREATE TABLE tbl2 (c_id text ,d_id text, f_id text, s_id text); INSERT INTO tbl2 values('100000019403','D111','F11','S1'); INSERT INTO tbl2 values('100000019404','D112','F11','S1'); INSERT INTO tbl2 values('100000019405','D113','F11','S1'); INSERT INTO tbl2 values('100000019406','D111','F11','S1'); INSERT INTO tbl2 values('100000019407','D112','F11','S1'); INSERT INTO tbl2 values('100000019408','D121','F12','S1'); INSERT INTO tbl2 values('100000019409','D122','F12','S1'); INSERT INTO tbl2 values('100000019410','D123','F12','S1'); INSERT INTO tbl2 values('100000019411','D123','F12','S1'); INSERT INTO tbl2 values('100000019412','D141','F14','S1'); INSERT INTO tbl2 values('100000019413','D131','F13','S1'); INSERT INTO tbl2 values('100000019414','D142','F14','S1'); INSERT INTO tbl2 values('100000019415','D132','F13','S1'); INSERT INTO tbl2 values('100000019416','D143','F14','S1'); INSERT INTO tbl2 values('100000019417','D133','F13','S1'); INSERT INTO tbl2 values('100000019418','D144','F14','S1'); INSERT INTO tbl2 values('100000019419','D211','F21','S2'); INSERT INTO tbl2 values('100000019420','D212','F21','S2'); INSERT INTO tbl2 values('100000019421','D213','F21','S2'); INSERT INTO tbl2 values('100000019422','D211','F21','S2'); INSERT INTO tbl2 values('100000019423','D212','F21','S2'); INSERT INTO tbl2 values('100000019424','D221','F22','S2'); INSERT INTO tbl2 values('100000019425','D222','F22','S2'); INSERT INTO tbl2 values('100000019426','D223','F22','S2'); INSERT INTO tbl2 values('100000019427','D223','F22','S2'); INSERT INTO tbl2 values('100000019428','D241','F24','S2'); INSERT INTO tbl2 values('100000019429','D231','F23','S2'); INSERT INTO tbl2 values('100000019430','D242','F24','S2'); INSERT INTO tbl2 values('100000019431','D232','F23','S2'); INSERT INTO tbl2 values('100000019432','D243','F24','S2'); INSERT INTO tbl2 values('100000019433','D233','F23','S2'); INSERT INTO tbl2 values('100000019434','D244','F24','S2'); INSERT INTO tbl2 values('100000019435','D311','F31','S3'); INSERT INTO tbl2 values('100000019436','D312','F31','S3'); INSERT INTO tbl2 values('100000019437','D313','F31','S3'); INSERT INTO tbl2 values('100000019438','D311','F31','S3'); INSERT INTO tbl2 values('100000019439','D312','F31','S3'); INSERT INTO tbl2 values('100000019440','D321','F32','S3'); INSERT INTO tbl2 values('100000019441','D322','F32','S3'); INSERT INTO tbl2 values('100000019442','D323','F32','S3'); INSERT INTO tbl2 values('100000019443','D323','F32','S3'); INSERT INTO tbl2 values('100000019444','D341','F34','S3'); INSERT INTO tbl2 values('100000019445','D331','F33','S3'); INSERT INTO tbl2 values('100000019446','D342','F34','S3'); INSERT INTO tbl2 values('100000019447','D332','F33','S3'); INSERT INTO tbl2 values('100000019448','D343','F34','S3'); INSERT INTO tbl2 values('100000019449','D333','F33','S3'); INSERT INTO tbl2 values('100000019450','D344','F34','S3'); INSERT INTO tbl2 values('100000019451','D111','F11','S1'); INSERT INTO tbl2 values('100000019452','D112','F11','S1'); INSERT INTO tbl2 values('100000019453','D113','F11','S1'); INSERT INTO tbl2 values('100000019454','D111','F11','S1'); INSERT INTO tbl2 values('100000019455','D112','F11','S1'); INSERT INTO tbl2 values('100000019456','D121','F12','S1'); INSERT INTO tbl2 values('100000019457','D122','F12','S1'); INSERT INTO tbl2 values('100000019458','D123','F12','S1'); INSERT INTO tbl2 values('100000019459','D123','F12','S1'); INSERT INTO tbl2 values('100000019460','D141','F14','S1'); INSERT INTO tbl2 values('100000019461','D131','F13','S1'); INSERT INTO tbl2 values('100000019462','D142','F14','S1'); INSERT INTO tbl2 values('100000019463','D132','F13','S1'); INSERT INTO tbl2 values('100000019464','D143','F14','S1'); INSERT INTO tbl2 values('100000019465','D133','F13','S1'); INSERT INTO tbl2 values('100000019466','D144','F14','S1');

我们有一个带有资产ID的交易表，它只提供有关失败资产的信息。假设如果更高级别的资产ID失败，则也会填充子级数据，但在获取记录时我们需要忽略子级记录并获得最高级别。

交易数据可用3天，讨论三种不同的情况。 2013-10-10中关于S1资产的情景1失败了，这也给出了需要忽略的儿童记录。

2013-10-11的情景2讨论了F21，F22，F23失败及其子记录。我们需要忽视孩子们。注意资产ID S1没有失败，因此不会出现在方案2的交易表中

2013-10-12的情景3讨论了F33失败及其子女D331，D332，D333。我们只需考虑F33并忽略儿童。考虑D311，D312，D313，D321，D322和D323。

我们总是需要按照startdatetime字段进行分组，因为父记录和子记录对于给定的条目总是具有相同的列值。

请参阅上面的链接，其中还包含事务表和数据

CREATE TABLE tbl1 (startdatetime text, enddatetime text, assetid text); INSERT INTO tbl1 values('2013-10-10 22:10:11', '2013-10-10 22:10:11', 'S1'); INSERT INTO tbl1 values('2013-10-10 22:10:11', '2013-10-10 22:10:11', 'F11'); INSERT INTO tbl1 values('2013-10-10 22:10:11', '2013-10-10 22:10:11', 'F12'); INSERT INTO tbl1 values('2013-10-10 22:10:11', '2013-10-10 22:10:11', 'F13'); INSERT INTO tbl1 values('2013-10-10 22:10:11', '2013-10-10 22:10:11', 'D111'); INSERT INTO tbl1 values('2013-10-10 22:10:11', '2013-10-10 22:10:11', 'D112'); INSERT INTO tbl1 values('2013-10-10 22:10:11', '2013-10-10 22:10:11', 'D113'); INSERT INTO tbl1 values('2013-10-10 22:10:11', '2013-10-10 22:10:11', 'D121'); INSERT INTO tbl1 values('2013-10-10 22:10:11', '2013-10-10 22:10:11', 'D122'); INSERT INTO tbl1 values('2013-10-10 22:10:11', '2013-10-10 22:10:11', 'D123'); INSERT INTO tbl1 values('2013-10-10 22:10:11', '2013-10-10 22:10:11', 'D131'); INSERT INTO tbl1 values('2013-10-10 22:10:11', '2013-10-10 22:10:11', 'D132'); INSERT INTO tbl1 values('2013-10-10 22:10:11', '2013-10-10 22:10:11', 'D133'); INSERT INTO tbl1 values('2013-10-11 22:10:11', '2013-10-11 22:12:11', 'F21'); INSERT INTO tbl1 values('2013-10-11 22:10:11', '2013-10-11 22:12:11', 'F22'); INSERT INTO tbl1 values('2013-10-11 22:10:11', '2013-10-11 22:12:11', 'F23'); INSERT INTO tbl1 values('2013-10-11 22:10:11', '2013-10-11 22:12:11', 'D211'); INSERT INTO tbl1 values('2013-10-11 22:10:11', '2013-10-11 22:12:11', 'D212'); INSERT INTO tbl1 values('2013-10-11 22:10:11', '2013-10-11 22:12:11', 'D213'); INSERT INTO tbl1 values('2013-10-11 22:10:11', '2013-10-11 22:12:11', 'D221'); INSERT INTO tbl1 values('2013-10-11 22:10:11', '2013-10-11 22:12:11', 'D222'); INSERT INTO tbl1 values('2013-10-11 22:10:11', '2013-10-11 22:12:11', 'D223'); INSERT INTO tbl1 values('2013-10-11 22:10:11', '2013-10-11 22:12:11', 'D231'); INSERT INTO tbl1 values('2013-10-11 22:10:11', '2013-10-11 22:12:11', 'D232'); INSERT INTO tbl1 values('2013-10-11 22:10:11', '2013-10-11 22:12:11', 'D233'); INSERT INTO tbl1 values('2013-10-12 22:10:11', '2013-10-12 22:16:11', 'F33'); INSERT INTO tbl1 values('2013-10-12 22:10:11', '2013-10-12 22:16:11', 'D311'); INSERT INTO tbl1 values('2013-10-12 22:10:11', '2013-10-12 22:16:11', 'D312'); INSERT INTO tbl1 values('2013-10-12 22:10:11', '2013-10-12 22:16:11', 'D313'); INSERT INTO tbl1 values('2013-10-12 22:10:11', '2013-10-12 22:16:11', 'D321'); INSERT INTO tbl1 values('2013-10-12 22:10:11', '2013-10-12 22:16:11', 'D322'); INSERT INTO tbl1 values('2013-10-12 22:10:11', '2013-10-12 22:16:11', 'D323'); INSERT INTO tbl1 values('2013-10-12 22:10:11', '2013-10-12 22:16:11', 'D331'); INSERT INTO tbl1 values('2013-10-12 22:10:11', '2013-10-12 22:16:11', 'D332'); INSERT INTO tbl1 values('2013-10-12 22:10:11', '2013-10-12 22:16:11', 'D333');

预期输出：

根据交易数据表对受影响的消费者进行计数。

请帮我查看上述情况的c_id记录详情，我会得到点数。

Answer 1

case1 ：存在s_id然后忽略子（f_id）和子（d_id）行

使用CTEs，解决方案可能如下所示：

WITH x AS (
   SELECT d_id, f_id
   FROM   tbl2 t2
   JOIN   tbl1 t1 ON t1.assetid = t2.s_id
   )
SELECT t.*
FROM   tbl1 t
LEFT   JOIN d ON d.d_id = t.assetid
LEFT   JOIN f ON f.f_id = t.assetid
WHERE  d.d_id IS NULL
AND    f.f_id IS NULL

解释

CTE x标识d_id和f_id将被忽略。
主要的SELECT左边连接到此排除表x两次，以消除d_id或f_id上匹配的行。

case2 ：f_id存在然后忽略父（s_id）和更低（d_id）

WITH x AS (
   SELECT d_id, s_id
   FROM   tbl2 f
   JOIN   tbl1 t ON t.assetid = f.f_id
   )
SELECT t.*
FROM   tbl1 t
LEFT   JOIN x d ON d.d_id = t.assetid
LEFT   JOIN x s ON s.s_id = t.assetid
WHERE  d.d_id IS NULL
AND    s.s_id IS NULL;

-> SQLfiddle demo

case3 ：d_id存在然后忽略父s_id，f_id

你明白了，不是吗？

sql过滤基于条件父到子层次结构的行

1 个答案:

解释