如果记录与当前记录中的某些条件匹配，我需要执行单个oracle SQL查询，该查询将从不同记录返回字段的值。此数据通过ODBC连接从Oracle SQL DB提取到Excel中以生成报告。目前，我从表中提取所有数据并在excel中对其进行操作，但记录数量已增加到不再可行的程度。 （大约1/4百万）
SOURCE TABLE
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|major |minor |step |currentUser |NextUser |comment |stage |action |timestamp |
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|475 |13 |1 |jim |bob |request created |QA |submit |12-19-2005|
|475 |13 |2 |bob |james |request approved |RA |accept |12-20-2005|
|475 |13 |3 |james |bob |data submitted |QA |submit |12-21-2005|
|475 |13 |4 | |james |rejected: thisISwhy|RA |accept |12-22-2005|
|475 |13 |5 |James |bob |data submitted |QA |submit |12-23-2005|
|475 |13 |6 | |jim |data approved |SC |complete|12-24-2005|
|475 |13 |6 | | |request closed |SC |closed |12-24-2005|
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基本上，jim向james发送请求，但bob批准或拒绝了整个过程中的每一步。这里有3个提交，所以我只需要3条记录，但有些数据来自不同记录的字段中的数据。目前jim获得1次提交和0次拒绝，james获得2次提交和1次拒绝。在这里：如果bob拒绝james提交，请求可以重新分配给sally，并且持有此数据的系统追溯性地将sally称为第4步中的nextUser，这将使得它获得拒绝，但它詹姆斯是错误提交的。在这种情况下，吉姆，詹姆斯和莎莉都得到1提交，但詹姆斯有1拒绝。这就是我需要它输出的内容（最后2个filds＆＃34; 1＆＃39; s＆＃34;是报告数量的提交和拒绝的反制标志）
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|major |minor |step |submiter |QA_rep|comment |timestamp |submit |reject |
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|475 |13 |1 |jim |bob |thing created |12-19-2005 |1 | |
|475 |13 |3 |james |bob |rejected: thisISwhy|12-22-2005 |1 |1 |
|475 |13 |5 |james |bob |data approved |12-22-2005 |1 | |
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答案 0 :(得分：0)
我已经猜测了一些逻辑（拒绝的行总是会以＆＃34开头的评论;拒绝：＆＃34;？此外，拒绝行的操作是否真的是＆ ＃34;已接受＆＃34;？我还做了一些假设，对于提交的行，＆＃34; nextuser＆＃34;是qa用户;如果不是＆n，您可能需要添加一些其他的case语句总是如此。我已经猜测了你的案件被拒绝并被分配给其他人。
如果我的任何假设不正确，希望您能够修改我的查询以满足您的目的。
with source_table as (select 475 major, 13 minor, 1 step, 'jim' currentuser, 'bob' nextuser, 'request created' request_comment, 'QA' stage, 'submit' action, to_date('19/12/2005', 'dd/mm/yyyy') dt from dual union all
select 475 major, 13 minor, 2 step, 'bob' currentuser, 'james' nextuser, 'request approved' request_comment, 'RA' stage, 'accept' action, to_date('20/12/2005', 'dd/mm/yyyy') dt from dual union all
select 475 major, 13 minor, 3 step, 'james' currentuser, 'bob' nextuser, 'data submitted' request_comment, 'QA' stage, 'submit' action, to_date('21/12/2005', 'dd/mm/yyyy') dt from dual union all
select 475 major, 13 minor, 4 step, null currentuser, 'james' nextuser, 'rejected: thisISwhy' request_comment, 'RA' stage, 'accept' action, to_date('22/12/2005', 'dd/mm/yyyy') dt from dual union all
select 475 major, 13 minor, 5 step, 'james' currentuser, 'bob' nextuser, 'data submitted' request_comment, 'QA' stage, 'submit' action, to_date('23/12/2005', 'dd/mm/yyyy') dt from dual union all
select 475 major, 13 minor, 6 step, null currentuser, 'jim' nextuser, 'data approved' request_comment, 'SC' stage, 'complete' action, to_date('24/12/2005', 'dd/mm/yyyy') dt from dual union all
select 475 major, 13 minor, 6 step, null currentuser, null nextuser, 'request closed' request_comment, 'SC' stage, 'closed' action, to_date('24/12/2005', 'dd/mm/yyyy') dt from dual union all
select 475 major, 14 minor, 1 step, 'jim' currentuser, 'bob' nextuser, 'request created' request_comment, 'QA' stage, 'submit' action, to_date('19/12/2005', 'dd/mm/yyyy') dt from dual union all
select 475 major, 14 minor, 2 step, 'bob' currentuser, 'james' nextuser, 'request approved' request_comment, 'RA' stage, 'accept' action, to_date('20/12/2005', 'dd/mm/yyyy') dt from dual union all
select 475 major, 14 minor, 3 step, 'james' currentuser, 'bob' nextuser, 'data submitted' request_comment, 'QA' stage, 'submit' action, to_date('21/12/2005', 'dd/mm/yyyy') dt from dual union all
select 475 major, 14 minor, 4 step, null currentuser, 'sally' nextuser, 'rejected: thisISwhy' request_comment, 'RA' stage, 'accept' action, to_date('22/12/2005', 'dd/mm/yyyy') dt from dual union all
select 475 major, 14 minor, 5 step, 'sally' currentuser, 'bob' nextuser, 'data submitted' request_comment, 'QA' stage, 'submit' action, to_date('23/12/2005', 'dd/mm/yyyy') dt from dual union all
select 475 major, 14 minor, 6 step, null currentuser, 'jim' nextuser, 'data approved' request_comment, 'SC' stage, 'complete' action, to_date('24/12/2005', 'dd/mm/yyyy') dt from dual union all
select 475 major, 14 minor, 6 step, null currentuser, null nextuser, 'request closed' request_comment, 'SC' stage, 'closed' action, to_date('24/12/2005', 'dd/mm/yyyy') dt from dual),
res as (select major,
minor,
step,
currentuser,
nextuser,
request_comment,
dt,
stage,
action,
lead(request_comment) over (partition by major, minor order by step) next_comment,
case when lead(request_comment) over (partition by major, minor order by step) like 'rejected:%' then 1 end rejected
from source_table)
select major,
minor,
step,
currentuser submitter,
nextuser qa_rep,
next_comment request_comment,
dt,
1 submit,
rejected
from res
where action = 'submit';
MAJOR MINOR STEP SUBMITTER QA_REP REQUEST_COMMENT DT SUBMIT REJECTED
---------- ---------- ---------- --------- ------ ------------------- ---------- ---------- ----------
475 13 1 jim bob request approved 19/12/2005 1
475 13 3 james bob rejected: thisISwhy 21/12/2005 1 1
475 13 5 james bob data approved 23/12/2005 1
475 14 1 jim bob request approved 19/12/2005 1
475 14 3 james bob rejected: thisISwhy 21/12/2005 1 1
475 14 5 sally bob data approved 23/12/2005 1