質問が明確でないため、4つの異なる解決策を考え出しました。ソリューションは異なります：
- クリスの答えに従って「カスケード」するかどうか
- クローズされた日付がある場合、そのグループの最も早い日付を使用するか、クローズされたレコードの開始日を使用するか。
これはMySQLではなくSQL Serverで行われることに注意してください。一部の非常に小さな構文の変更を除いて、同じように動作するはずです。
4つの方法すべてに共通の設定とサンプルデータ
CREATE TABLE #example
(
id int NOT NULL DEFAULT '0',
borrower_id int NOT NULL,
started datetime NULL DEFAULT NULL,
closed datetime NULL DEFAULT NULL,
dead datetime NULL DEFAULT '0000-00-00 00:00:00'
);
CREATE TABLE #result
(
borrower_id int NOT NULL DEFAULT '0',
started datetime NULL DEFAULT NULL,
ended datetime NULL DEFAULT NULL
);
INSERT INTO #example
(id, borrower_id, started, closed, dead)
VALUES
(7714,238846,'2015-01-27 15:14:50','2015-02-02 14:14:13',NULL),
(7882,238846,'2015-01-28 13:25:58',NULL,'2015-05-15 12:16:07'),
(13190,259140,'2015-03-17 10:11:44',NULL,'2015-03-18 07:31:57'),
(13192,259140,'2015-03-17 10:12:17',NULL,'2015-03-18 11:46:46'),
(13194,259140,'2015-03-17 10:12:53',NULL,'2015-03-18 11:46:36'),
(14020,259140,'2015-03-23 14:32:16','2015-03-24 15:57:32',NULL),
(17124,242650,'2015-04-16 16:19:08','2015-04-16 16:21:06',NULL),
(19690,238846,'2015-05-15 13:17:31',NULL,'2015-05-27 13:56:43'),
(20038,242650,'2015-05-19 15:38:17',NULL,NULL),
(20040,242650,'2015-05-19 15:39:58',NULL,'2015-05-21 12:01:02'),
(20302,242650,'2015-05-21 13:09:06',NULL,NULL),
(20304,242650,'2015-05-21 13:09:54',NULL,NULL),
(20306,242650,'2015-05-21 13:10:19',NULL,NULL),
(20308,242650,'2015-05-21 13:12:20',NULL,NULL),
(21202,238846,'2015-05-29 16:47:29',NULL,NULL),
(21204,238846,'2015-05-29 16:47:56',NULL,NULL),
(21208,238846,'2015-05-29 17:05:15',NULL,NULL),
(21210,238846,'2015-05-29 17:05:55',NULL,NULL),
(21918,242650,'2015-06-04 17:04:29',NULL,'2015-06-12 15:47:23');
1.カスケード-クローズドレコードソリューションの使用
これは、質問者が彼の結果を探して一致させると私が信じているソリューションです。
select *
into #temp1
from #example
while (select count(1) from #temp1)>0
begin
--Grab only one user's records and place into a temp table to work with
declare @curUser int
set @curUser=(select min(borrower_id) from #temp1)
select *
into #temp2
from #temp1 t1
where t1.borrower_id=@curUser
while(select count(1) from #temp2)>0
begin
--Grab earliest start date and use as basis for 15 day window (#2 rule)
--Use the record as basis for rules 3 and 4
declare @minTime datetime
set @minTime=(select min(started) from #temp2)
declare @maxTime datetime
set @maxTime=@minTime
declare @curId int
set @curId=(select min(id) from #temp2 where started=@minTime)
select *
into #temp3
from #temp2 t2
where t2.id=@curId
--Remove earliest record from pool of potential records to check rules against
delete
from #temp2
where id=@curId
--Insert all records within 15 days of start date, then remove record from pool
while (select count(1)
from #temp2 t2
where t2.started<=DATEADD(day,15,@maxTime)
or t2.closed<=DATEADD(day,15,@maxTime)
or t2.dead<=DATEADD(day,15,@maxTime) )>0
begin
insert into #temp3
select *
from #temp2 t2
where t2.started<=DATEADD(day,15,@maxTime) or t2.closed<=DATEADD(day,15,@maxTime) or t2.dead<=DATEADD(day,15,@maxTime)
delete
from #temp2
where started<=DATEADD(day,15,@maxTime) or closed<=DATEADD(day,15,@maxTime) or dead<=DATEADD(day,15,@maxTime)
--set new max time from any column
if (select max(started) from #temp3)>@maxTime
set @maxTime=(select max(started) from #temp3)
if (select max(closed) from #temp3)>@maxTime
set @maxTime=(select max(started) from #temp3)
if (select max(dead) from #temp3)>@maxTime
set @maxTime=(select max(started) from #temp3)
end
--Calculate end time according to rule #3
declare @end datetime
set @end = null
set @end=(select min(closed) from #temp3)
if @end is not null
begin
set @minTime=(select started from #temp3 where closed=@end)
end
if @end is null
begin
if(select count(1) from #temp3 where dead is null)=0
set @end= (select max(dead) from #temp3)
end
insert into #result (borrower_id,started,ended)
values (@curUser,@minTime,@end)
drop table #temp3
end
--Done with the one user, remove him from temp table and iterate thru to the next user
delete
from #temp1
where borrower_id=@curUser
drop table #temp2
end
drop table #temp1
drop table #example
select * from #result order by started
drop table #result
2.非カスケード-クローズドレコードソリューションの使用
利用可能な場合は最初の休業日、次に最も早い開始日から計算された開始。
select *
into #temp1
from #example
while (select count(1) from #temp1)>0
begin
--Grab only one user's records and place into a temp table to work with
declare @curUser int
set @curUser=(select min(borrower_id) from #temp1)
select *
into #temp2
from #temp1 t1
where t1.borrower_id=@curUser
while(select count(1) from #temp2)>0
begin
--Grab earliest start date and use as basis for 15 day window (#2 rule)
--Use the record as basis for rules 3 and 4
declare @minTime datetime
set @minTime=(select min(started) from #temp2)
declare @curId int
set @curId=(select min(id) from #temp2 where started=@minTime)
select *
into #temp3
from #temp2 t2
where t2.id=@curId
--Remove earliest record from pool of potential records to check rules against
delete
from #temp2
where id=@curId
--Insert all records within 15 days of start date, then remove record from pool
insert into #temp3
select *
from #temp2 t2
where t2.started<=DATEADD(day,15,@minTime)
delete
from #temp2
where started<=DATEADD(day,15,@minTime)
--Insert all records within 15 days of closed, then remove record from pool
insert into #temp3
select *
from #temp2 t2
where t2.closed<=DATEADD(day,15,@minTime)
delete
from #temp2
where closed<=DATEADD(day,15,@minTime)
--Insert all records within 15 days of dead, then remove record from pool
insert into #temp3
select *
from #temp2 t2
where t2.dead<=DATEADD(day,15,@minTime)
delete
from #temp2
where dead<=DATEADD(day,15,@minTime)
--Calculate end time according to rule #3
declare @end datetime
set @end = null
set @end=(select min(closed) from #temp3)
if @end is not null
begin
set @minTime=(select started from #temp3 where closed=@end)
end
if @end is null
begin
if(select count(1) from #temp3 where dead is null)=0
set @end= (select max(dead) from #temp3)
end
insert into #result (borrower_id,started,ended)
values (@curUser,@minTime,@end)
drop table #temp3
end
--Done with the one user, remove him from temp table and iterate thru to the next user
delete
from #temp1
where borrower_id=@curUser
drop table #temp2
end
drop table #temp1
drop table #example
select * from #result
drop table #result
3.非カスケード-最も古い日付のソリューションを使用
最も早い日付のみで計算を開始します。
select *
into #temp1
from #example
while (select count(1) from #temp1)>0
begin
--Grab only one user's records and place into a temp table to work with
declare @curUser int
set @curUser=(select min(borrower_id) from #temp1)
select *
into #temp2
from #temp1 t1
where t1.borrower_id=@curUser
while(select count(1) from #temp2)>0
begin
--Grab earliest start date and use as basis for 15 day window (#2 rule)
--Use the record as basis for rules 3 and 4
declare @minTime datetime
set @minTime=(select min(started) from #temp2)
declare @curId int
set @curId=(select min(id) from #temp2 where started=@minTime)
select *
into #temp3
from #temp2 t2
where t2.id=@curId
--Remove earliest record from pool of potential records to check rules against
delete
from #temp2
where id=@curId
--Insert all records within 15 days of start date, then remove record from pool
insert into #temp3
select *
from #temp2 t2
where t2.started<=DATEADD(day,15,@minTime) or t2.closed<=DATEADD(day,15,@minTime) or t2.dead<=DATEADD(day,15,@minTime)
delete
from #temp2
where started<=DATEADD(day,15,@minTime) or closed<=DATEADD(day,15,@minTime) or dead<=DATEADD(day,15,@minTime)
--Calculate end time according to rule #3
declare @end datetime
set @end = null
set @end=(select min(closed) from #temp3)
if @end is null
begin
if(select count(1) from #temp3 where dead is null)=0
set @end= (select max(dead) from #temp3)
end
insert into #result (borrower_id,started,ended)
values (@curUser,@minTime,@end)
drop table #temp3
end
--Done with the one user, remove him from temp table and itterate thru to the next user
delete
from #temp1
where borrower_id=@curUser
drop table #temp2
end
drop table #temp1
drop table #example
select * from #result
drop table #result
4.カスケード-最も古い日付ソリューションの使用
最も早い日付のみで計算を開始します。
select *
into #temp1
from #example
while (select count(1) from #temp1)>0
begin
--Grab only one user's records and place into a temp table to work with
declare @curUser int
set @curUser=(select min(borrower_id) from #temp1)
select *
into #temp2
from #temp1 t1
where t1.borrower_id=@curUser
while(select count(1) from #temp2)>0
begin
--Grab earliest start date and use as basis for 15 day window (#2 rule)
--Use the record as basis for rules 3 and 4
declare @minTime datetime
set @minTime=(select min(started) from #temp2)
declare @maxTime datetime
set @maxTime=@minTime
declare @curId int
set @curId=(select min(id) from #temp2 where started=@minTime)
select *
into #temp3
from #temp2 t2
where t2.id=@curId
--Remove earliest record from pool of potential records to check rules against
delete
from #temp2
where id=@curId
--Insert all records within 15 days of start date, then remove record from pool
while (select count(1)
from #temp2 t2
where t2.started<=DATEADD(day,15,@maxTime)
or t2.closed<=DATEADD(day,15,@maxTime)
or t2.dead<=DATEADD(day,15,@maxTime) )>0
begin
insert into #temp3
select *
from #temp2 t2
where t2.started<=DATEADD(day,15,@maxTime) or t2.closed<=DATEADD(day,15,@maxTime) or t2.dead<=DATEADD(day,15,@maxTime)
delete
from #temp2
where started<=DATEADD(day,15,@maxTime) or closed<=DATEADD(day,15,@maxTime) or dead<=DATEADD(day,15,@maxTime)
--set new max time from any column
if (select max(started) from #temp3)>@maxTime
set @maxTime=(select max(started) from #temp3)
if (select max(closed) from #temp3)>@maxTime
set @maxTime=(select max(started) from #temp3)
if (select max(dead) from #temp3)>@maxTime
set @maxTime=(select max(started) from #temp3)
end
--Calculate end time according to rule #3
declare @end datetime
set @end = null
set @end=(select min(closed) from #temp3)
if @end is null
begin
if(select count(1) from #temp3 where dead is null)=0
set @end= (select max(dead) from #temp3)
end
insert into #result (borrower_id,started,ended)
values (@curUser,@minTime,@end)
drop table #temp3
end
--Done with the one user, remove him from temp table and iterate thru to the next user
delete
from #temp1
where borrower_id=@curUser
drop table #temp2
end
drop table #temp1
drop table #example
select * from #result order by started
drop table #result