連続時間間隔によるSQL結果のグループ化(Oracle SQL)
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06-07-2019 - |
質問
こんにちは、表には次のデータがあります:
ID ----- startDate ---- endDate
5549 2008-05-01 4712-12-31
5567 2008-04-17 2008-04-30 1
5567 2008-05-01 2008-07-31 1
5567 2008-09-01 4712-12-31 2
5569 2008-05-01 2008-08-31
5569 2008-09-01 4712-12-31
5589 2008-04-18 2008-04-30
5589 2008-05-01 4712-12-31
5667 2008-05-01 4712-12-31
5828 2008-06-03 4712-12-31
5867 2008-06-03 4712-12-31
6167 2008-11-01 4712-12-31
6207 2008-07-01 4712-12-31
6228 2008-07-01 4712-12-31
6267 2008-07-14 4712-12-31
返される各IDの連続時間間隔をグループ化する方法を探しています:
ID、 min(startDate)、 max(endDate)、
太字のID 5567の結果にこのようなものを含める
5567 2008-04-17 2008-07-31
5567 2008-09-01 4712-12-31
PL / SQLもオプションです:)
ありがとう、
解決
これはあなたが必要とすることを行うと思います: (範囲の重複によって混乱する可能性があることに注意してください。データセットで可能かどうかはわかりません)
select id, min(start_date) period_start, max(end_date) period_end
from
(
select
id, start_date, end_date,
max(contig) over (partition by id order by end_date) contiguous_group
from
(
select
id, start_date, end_date,
case
when lag(end_date) over (partition by id order by end_date) != start_date-1 or row_number() over (partition by id order by end_date)=1
then row_number() over (partition by id order by end_date) else null end contig
from t2
)
)
group by id, contiguous_group
order by id, period_start
/
使用したテストデータは次のとおりです-いくつかの追加エントリを使用したものに基づいています:
create table t2 (id number, start_date date, end_date date);
insert into t2(id, start_date, end_date)values(5549, to_date('2008-05-01', 'yyyy-mm-dd'), to_date('4712-12-31', 'yyyy-mm-dd'));
insert into t2(id, start_date, end_date)values(5567, to_date('2008-04-17', 'yyyy-mm-dd'), to_date('2008-04-30', 'yyyy-mm-dd'));
insert into t2(id, start_date, end_date)values(5567, to_date('2008-05-01', 'yyyy-mm-dd'), to_date('2008-07-31', 'yyyy-mm-dd'));
insert into t2(id, start_date, end_date)values(5567, to_date('2008-08-01', 'yyyy-mm-dd'), to_date('2008-08-14', 'yyyy-mm-dd'));
insert into t2(id, start_date, end_date)values(5567, to_date('2009-09-01', 'yyyy-mm-dd'), to_date('4712-12-31', 'yyyy-mm-dd'));
insert into t2(id, start_date, end_date)values(5567, to_date('2008-11-17', 'yyyy-mm-dd'), to_date('2008-12-13', 'yyyy-mm-dd'));
insert into t2(id, start_date, end_date)values(5567, to_date('2008-12-14', 'yyyy-mm-dd'), to_date('2008-12-24', 'yyyy-mm-dd'));
insert into t2(id, start_date, end_date)values(5569, to_date('2008-05-01', 'yyyy-mm-dd'), to_date('2008-08-31', 'yyyy-mm-dd'));
insert into t2(id, start_date, end_date)values(5569, to_date('2008-09-01', 'yyyy-mm-dd'), to_date('4712-12-31', 'yyyy-mm-dd'));
insert into t2(id, start_date, end_date)values(5589, to_date('2008-04-18', 'yyyy-mm-dd'), to_date('2008-04-30', 'yyyy-mm-dd'));
insert into t2(id, start_date, end_date)values(5589, to_date('2008-05-01', 'yyyy-mm-dd'), to_date('4712-12-31', 'yyyy-mm-dd'));
insert into t2(id, start_date, end_date)values(5667, to_date('2008-05-01', 'yyyy-mm-dd'), to_date('4712-12-31', 'yyyy-mm-dd'));
insert into t2(id, start_date, end_date)values(5828, to_date('2008-06-03', 'yyyy-mm-dd'), to_date('4712-12-31', 'yyyy-mm-dd'));
insert into t2(id, start_date, end_date)values(5867, to_date('2008-06-03', 'yyyy-mm-dd'), to_date('4712-12-31', 'yyyy-mm-dd'));
insert into t2(id, start_date, end_date)values(6167, to_date('2008-11-01', 'yyyy-mm-dd'), to_date('4712-12-31', 'yyyy-mm-dd'));
insert into t2(id, start_date, end_date)values(6207, to_date('2008-07-01', 'yyyy-mm-dd'), to_date('4712-12-31', 'yyyy-mm-dd'));
insert into t2(id, start_date, end_date)values(6228, to_date('2008-07-01', 'yyyy-mm-dd'), to_date('4712-12-31', 'yyyy-mm-dd'));
insert into t2(id, start_date, end_date)values(6267, to_date('2008-07-14', 'yyyy-mm-dd'), to_date('4712-12-31', 'yyyy-mm-dd'));
commit;
他のヒント
次のような分析関数を使用してこれを行うことができます。
with d as
( select id, start_date, end_date
, case when start_date = prev_end+1
then 'cont' else 'new' end start_status
, case when end_date = next_start-1
then 'cont' else 'new' end end_stat
from
(
select id, start_date, end_date
, lag(end_date) over (partition by id order by start_date) prev_end
, lead(start_date) over (partition by id order by start_date) next_start
from t1
order by id, start_date
)
)
select starts.id, starts.start_date, ends.end_date
from
( select id, start_date, row_number() over (order by id, start_date) rn
from d
where start_status='new'
) starts,
( select id, end_date, row_number() over (order by id, start_date) rn
from d
where end_status='new'
) ends
where starts.rn = ends.rn
データでこの結果を取得します:
ID START_DATE END_DATE
---------- ---------- ----------
5549 2008-05-01 4712-12-31
5567 2008-04-17 2008-07-31
5567 2008-09-01 4712-12-31
5569 2008-05-01 4712-12-31
5589 2008-04-18 4712-12-31
5667 2008-05-01 4712-12-31
5828 2008-06-03 4712-12-31
5867 2008-06-03 4712-12-31
6167 2008-11-01 4712-12-31
6207 2008-07-01 4712-12-31
6228 2008-07-01 4712-12-31
6267 2008-07-14 4712-12-31
12 rows selected.
仕組み:
- WITH句は、各行に「開始ステータス」が割り当てられたデータのビューDを生成します。および「終了ステータス」。それぞれ「前」または「次」の行と連続しているかどうかを示す「新規」または「継続」です。
- インラインビュー" starts"および「終了」 " new"がある行のみを引き出します。開始ステータスと終了ステータスをそれぞれ、それらを結合する行番号で。
- 「メインクエリ」次に、これら2つのビューから選択し、行番号列で結合します。
次のようにPL / SQLブロックのサンプルロジックを記述する必要があります。
Create or Replace someproc
Declare
Cursore someCur AS
Select * from someTable
Order by ID,StartDate
IDVar as Varchar(10)
MinDate as DATE
MaxDate as DATE
Begin
Open someCur
Fetch ID,StartDate,EndDate into IDVar,MinDate,MaxDate
While SomeCur%NOTFOUND
LOOP
Fetch ID,StartDate,EndDate into TempID,TempStartDate,TempEndDate
if IDVar <> TempID then
-- output into your required structure values: IDVar,MinDate,MaxDate
IDVar = TempID
MinDate = TempStartDate
MaxDate = TempEndDate
Exit Loop
ELSE IF
MaxDate+1 >= TempStartDate THEN
MaxDate = TempEndDate
END IF
End LOOP
テストするインスタンスの近くにいませんが、試しましたか
SELECT
ID,
startDate,
endDate
FROM
myTable
WHERE
(ID, startDate) in
(SELECT
ID,
min(startDate)
FROM
myTable
GROUP BY
ID
)
or
(ID, endDate) in
(SELECT
ID,
max(endDate)
FROM
myTable
GROUP BY
ID
)
これにより、各IDの最も早い startDate
と、最新の endDate
がすべて表示されます。連続かどうか。
WITH
laik_test AS -- sample data
(select 1001 id, date'2012-01-03' start_date, date'2012-06-29' end_date from dual union
select 1001 id, date'2012-03-03' start_date, date'2012-08-29' end_date from dual union
select 1002 id, date'2012-06-03' start_date, date'2012-11-29' end_date from dual union
select 1001 id, date'2012-09-03' start_date, date'2013-02-20' end_date from dual union
select 1001 id, date'2013-02-08' start_date, date'2013-04-29' end_date from dual union
select 1002 id, date'2012-11-03' start_date, date'2012-12-29' end_date from dual union
select 1002 id, date'2012-12-23' start_date, date'2013-09-29' end_date from dual union
select 1002 id, date'2013-08-03' start_date, date'2015-06-29' end_date from dual union
select 1001 id, date'2013-04-13' start_date, date'2013-09-29' end_date from dual union
select 1001 id, date'2013-07-03' start_date, date'2014-06-29' end_date from dual union
select 1003 id, date'2012-12-23' start_date, date'2013-09-29' end_date from dual union
select 1001 id, date'2013-07-03' start_date, date'2014-06-29' end_date from dual union
select 1003 id, date'2012-12-23' start_date, date'2013-09-29' end_date from dual union
select 1003 id, date'2013-09-30' start_date, date'2014-06-29' end_date from dual union
select 1003 id, date'2013-12-30' start_date, date'2014-03-11' end_date from dual union
select 1003 id, date'2014-06-29' start_date, date'2015-09-29' end_date from dual )
, matrica AS
( select id, start_date, end_date
, lead(start_date) over (partition by id order by start_date, end_date) start_date_next
, lag(end_date) over (partition by id order by start_date, end_date) end_date_prev
from laik_test m
where not exists (select *
from laik_test n
where m.id = n.id
and m.start_date > n.start_date and m.end_date < n.end_date))
, matrica2 AS
(select id, end_date
from matrica m
where start_date_next is null OR start_date_next > end_date + 1)
, matrica3 AS
(select id, start_date
from matrica m
where end_date_prev is null OR end_date_prev < start_date - 1)
, matrica4 AS
(select m2.id, m3.start_date, m2.end_date
from matrica2 m2, matrica3 m3
where m2.id=m3.id and m3.start_date < m2.end_date)
select id, start_date, end_date
from matrica4 m
where not exists (select * from matrica4 n
where m.id = n.id
and ( (n.start_date = m.start_date and m.end_date > n.end_date)
OR (n.end_date = m.end_date and m.start_date < n.start_date)
));
結果は次のとおりです。
ID | start_date | end_date
1001 | 2012-01-03 | 2012-08-29
1001 | 2012-09-03 | 2014-06-29
1002 | 2012-06-03 | 2015-06-29
1003 | 2012-12-23 | 2015-09-29
範囲を重複させようとしましたが、いくつかの困難が生じました これらのデータで:
INSERT INTO zzz_scrap_dates (id,effdate,termdate)
SELECT id,effdate,termdate from (
SELECT '1'id ,To_Date('2000-01-01','YYYY-MM-DD')effdate,To_Date('2020-01-31','YYYY-MM-DD')termdate FROM dual
UNION
SELECT '1'id ,To_Date('2000-01-01','YYYY-MM-DD')effdate,To_Date('2010-01-31','YYYY-MM-DD')termdate FROM dual
UNION
SELECT '1'id ,To_Date('2005-01-01','YYYY-MM-DD')effdate,To_Date('2020-01-31','YYYY-MM-DD')termdate FROM dual
UNION
SELECT '1'id ,To_Date('2000-01-01','YYYY-MM-DD')effdate,To_Date('2020-01-31','YYYY-MM-DD')termdate FROM dual
UNION
SELECT '1'id ,To_Date('1999-01-01','YYYY-MM-DD')effdate,To_Date('2020-01-31','YYYY-MM-DD')termdate FROM dual
union
SELECT '2'id ,To_Date('2000-01-01','YYYY-MM-DD')effdate,To_Date('2020-01-31','YYYY-MM-DD')termdate FROM dual
UNION
SELECT '2'id ,To_Date('2000-01-01','YYYY-MM-DD')effdate,To_Date('2010-01-31','YYYY-MM-DD')termdate FROM dual
UNION
SELECT '2'id ,To_Date('2005-01-01','YYYY-MM-DD')effdate,To_Date('2020-01-31','YYYY-MM-DD')termdate FROM dual
UNION
SELECT '2'id ,To_Date('2000-01-01','YYYY-MM-DD')effdate,To_Date('2020-01-31','YYYY-MM-DD')termdate FROM dual
UNION
SELECT '2'id ,To_Date('1999-01-01','YYYY-MM-DD')effdate,To_Date('2020-01-31','YYYY-MM-DD')termdate FROM dual
union
SELECT '3'id ,To_Date('2000-01-01','YYYY-MM-DD')effdate,To_Date('2020-01-31','YYYY-MM-DD')termdate FROM dual
UNION
SELECT '3'id ,To_Date('1998-01-01','YYYY-MM-DD')effdate,To_Date('1999-01-31','YYYY-MM-DD')termdate FROM dual
UNION
SELECT '3'id ,To_Date('1005-01-01','YYYY-MM-DD')effdate,To_Date('1197-01-31','YYYY-MM-DD')termdate FROM dual
UNION
SELECT '3'id ,To_Date('2000-01-01','YYYY-MM-DD')effdate,To_Date('2020-01-31','YYYY-MM-DD')termdate FROM dual
UNION
SELECT '3'id ,To_Date('1197-01-01','YYYY-MM-DD')effdate,To_Date('2020-01-31','YYYY-MM-DD')termdate FROM dual