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WITH Coupures AS (
SELECT
id
, date
, valeur
, CASE WHEN LAG(valeur) OVER(PARTITION BY id ORDER BY date) = valeur THEN 0 ELSE 1 END AS cpr
FROM LaTable
)
,
Groupement AS (
SELECT
A.id
, A.date
, A.valeur
, SUM(B.cpr) AS grp
FROM Coupures A
LEFT JOIN Coupures B
ON B.id = A.id
AND B.date <= A.date
GROUP BY
A.id
, A.date
, A.valeur
)
SELECT
id
, MIN(date) as Debut
, MAX(date) as Fin
, valeur
FROM Groupement
GROUP BY
id
, valeur
, grp
ORDER BY id, MIN(date) |
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