Mit LEAD- und LAG-Funktionen in ORACLE können Sie diese Abfragen erstellen:
1.Anzahl der Abschaltungen:
WITH IntTable AS
( SELECT * FROM
(
SELECT dt b_date,value,LEAD(dt) OVER (ORDER BY dt) e_date FROM
(
select "Date" dt,"Value" value,
LAG("Value") OVER (ORDER BY "Date") pvalue,
LEAD("Value") OVER (ORDER BY "Date") nvalue
from T
) T1
WHERE pvalue is NULL or value<>pvalue or nvalue is NULL
)
WHERE E_DATE is NOT NULL
)
SELECT COUNT(*) FROM IntTable where value = 0
SQLFiddle-Demo
2.Zeitraum zwischen jedem Herunterfahren
WITH IntTable AS
( SELECT * FROM
(
SELECT dt b_date,value,LEAD(dt) OVER (ORDER BY dt) e_date FROM
(
select "Date" dt,"Value" value,
LAG("Value") OVER (ORDER BY "Date") pvalue,
LEAD("Value") OVER (ORDER BY "Date") nvalue
from T
) T1
WHERE pvalue is NULL or value<>pvalue or nvalue is NULL
)
WHERE E_DATE is NOT NULL
)
SELECT b_date,e_date, (e_date-b_date) * 60 * 24 FROM IntTable where value = 1
SQLFiddle-Demo
