Prøv dette
WITH cte
AS
(
SELECT *,COUNT(1) OVER(PARTITION BY cnt) pt FROM
(
SELECT tt.*
,(SELECT COUNT(id) FROM t WHERE data <= 10 AND ID < tt.ID) AS cnt
FROM t tt
WHERE data > 10
) t1
)
SELECT id, [when], data FROM cte WHERE pt >= 3
SQL FIDDLE DEMO
OUTPUT
id when data
2 2013-08-02 00:00:00.000 121
3 2013-08-03 00:00:00.000 132
4 2013-08-04 00:00:00.000 15
6 2013-08-06 00:00:00.000 1435
7 2013-08-07 00:00:00.000 143
8 2013-08-08 00:00:00.000 18
9 2013-08-09 00:00:00.000 19
19 REDIGER
Først tæller den indre forespørgsel antallet af poster, hvor data <=10
SELECT tt.*
,(SELECT COUNT(id) FROM t WHERE data <= 10 AND ID < tt.ID) AS cnt
FROM t tt
output
id when data cnt
1 2013-08-01 00:00:00.000 1 1
2 2013-08-02 00:00:00.000 121 1
3 2013-08-03 00:00:00.000 132 1
4 2013-08-04 00:00:00.000 15 1
5 2013-08-05 00:00:00.000 9 2
6 2013-08-06 00:00:00.000 1435 2
7 2013-08-07 00:00:00.000 143 2
8 2013-08-08 00:00:00.000 18 2
9 2013-08-09 00:00:00.000 19 2
10 2013-08-10 00:00:00.000 1 3
11 2013-08-11 00:00:00.000 1234 3
12 2013-08-12 00:00:00.000 124 3
13 2013-08-13 00:00:00.000 6 4
Derefter filtrerer vi posterne med data> 10
WHERE data > 10
Nu tæller vi posterne ved at partitonere cnt-kolonnen
SELECT *,COUNT(1) OVER(PARTITION BY cnt) pt FROM
(
SELECT tt.*
,(SELECT COUNT(id) FROM t WHERE data <= 10 AND ID < tt.ID) AS cnt
FROM t tt
WHERE data > 10
) t1
Output
id when data cnt pt
2 2013-08-02 00:00:00.000 121 1 3
3 2013-08-03 00:00:00.000 132 1 3
4 2013-08-04 00:00:00.000 15 1 3
6 2013-08-06 00:00:00.000 1435 2 4
7 2013-08-07 00:00:00.000 143 2 4
8 2013-08-08 00:00:00.000 18 2 4
9 2013-08-09 00:00:00.000 19 2 4
11 2013-08-11 00:00:00.000 1234 3 2
12 2013-08-12 00:00:00.000 124 3 2
Ovenstående forespørgsel er sat i cte ligesom temp table
Vælg nu de poster, der har det fortløbende antal>=3
SELECT id, [when], data FROM cte WHERE pt >= 3
EN ANDEN LØSNING
;WITH partitioned AS (
SELECT *, id - ROW_NUMBER() OVER (ORDER BY id) AS grp
FROM t
WHERE data > 10
),
counted AS (
SELECT *, COUNT(*) OVER (PARTITION BY grp) AS cnt
FROM partitioned
)
SELECT id, [when], data
FROM counted
WHERE cnt >= 3
Referencewebadresse
SQL FIDDLE DEMO