Едно решение на този вид заявка включва две части:генериране на категория, последвано от агрегиране в генерираните категории.
За данните, които сте предоставили, първата стъпка в този вид решение е групирането на данните по час (тъй като предоставените от вас данни нямат събития в 02:00 часа или 04:00 часа, за да се покажат тези часове в крайния резултат те могат да бъдат генерирани вместо).
Втората част е да се агрегира в кофите за час чрез pivot , както е споменато от Хорхе Кампос в коментарите.
По-долу е даден пример.
Първо създайте тестова таблица:
CREATE TABLE INSERT_TIME_STATUS(
INSERT_TIME TIMESTAMP,
STATUS VARCHAR2(128)
);
И добавете тестовите данни:
INSERT INTO INSERT_TIME_STATUS VALUES (TIMESTAMP '2017-01-01 00:00:00', 'AVAILABLE');
INSERT INTO INSERT_TIME_STATUS VALUES (TIMESTAMP '2017-01-01 00:15:00', 'BUSY');
INSERT INTO INSERT_TIME_STATUS VALUES (TIMESTAMP '2017-01-01 00:30:00', 'NOT AVAILABLE');
INSERT INTO INSERT_TIME_STATUS VALUES (TIMESTAMP '2017-01-01 01:30:00', 'AVAILABLE');
INSERT INTO INSERT_TIME_STATUS VALUES (TIMESTAMP '2017-01-01 03:10:00', 'BUSY');
INSERT INTO INSERT_TIME_STATUS VALUES (TIMESTAMP '2017-01-01 05:00:00', 'NOT AVAILABLE');
След това създайте заявката. Това ще използва факторинг на подзаявки, за да очертае двуетапната природа на този процес.
CALENDAR подфакторът тук ще генерира всеки час от деня, независимо дали през този час са се появили записи.
HOUR_CALENDAR подфакторът ще присвои всеки предоставен статус-запис на конкретен час и ще нареже статусите, които преминават в друг час, на парчета, така че всички записи да се поберат в рамките на един час.
DURATION_IN_STATUS подфакторът ще отчита колко минути е било активно всяко състояние през всеки час.
Последната заявка ще PIVOT за обобщаване (SUM ) времето за всяко STATUS беше активен през всеки час.
WITH HOUR_OF_DAY AS (SELECT LEVEL - 1 AS THE_HOUR
FROM DUAL
CONNECT BY LEVEL < 25),
CALENDAR AS (SELECT DAY_START
FROM (
SELECT (TIMESTAMP '2017-01-01 00:00:00' + NUMTODSINTERVAL(DATE_INCREMENT.OFFSET, 'DAY')) AS DAY_START
FROM (SELECT LEVEL - 1 AS OFFSET
FROM DUAL
CONNECT BY LEVEL < 9999) DATE_INCREMENT)
WHERE DAY_START BETWEEN (SELECT MIN(TRUNC(INSERT_TIME_STATUS.INSERT_TIME))
FROM INSERT_TIME_STATUS)
AND (SELECT MAX(TRUNC(INSERT_TIME_STATUS.INSERT_TIME))
FROM INSERT_TIME_STATUS)),
HOUR_CALENDAR AS (
SELECT
TO_CHAR(CALENDAR.DAY_START, 'MM/DD/YYYY') AS THE_DAY,
HOUR_OF_DAY.THE_HOUR,
CALENDAR.DAY_START + NUMTODSINTERVAL(HOUR_OF_DAY.THE_HOUR, 'HOUR') AS HOUR_START,
(SELECT MAX(INSERT_TIME_STATUS.STATUS)
KEEP (DENSE_RANK LAST
ORDER BY INSERT_TIME_STATUS.INSERT_TIME ASC)
FROM INSERT_TIME_STATUS
WHERE INSERT_TIME_STATUS.INSERT_TIME <= DAY_START + NUMTODSINTERVAL(THE_HOUR, 'HOUR')) AS HOUR_START_STATUS
FROM CALENDAR
CROSS JOIN HOUR_OF_DAY),
ALL_HOUR_STATUS AS (
SELECT
HOUR_CALENDAR.THE_DAY,
HOUR_CALENDAR.THE_HOUR,
HOUR_CALENDAR.HOUR_START AS THE_TIME,
HOUR_CALENDAR.HOUR_START_STATUS AS THE_STATUS
FROM HOUR_CALENDAR
UNION ALL
SELECT
HOUR_CALENDAR.THE_DAY,
HOUR_CALENDAR.THE_HOUR,
INSERT_TIME_STATUS.INSERT_TIME AS THE_TIME,
INSERT_TIME_STATUS.STATUS AS THE_STATUS
FROM HOUR_CALENDAR
INNER JOIN INSERT_TIME_STATUS
ON HOUR_CALENDAR.HOUR_START < INSERT_TIME_STATUS.INSERT_TIME
AND HOUR_CALENDAR.THE_HOUR = EXTRACT(HOUR FROM INSERT_TIME_STATUS.INSERT_TIME)),
DURATION_IN_STATUS AS (
SELECT
ALL_HOUR_STATUS.THE_DAY,
ALL_HOUR_STATUS.THE_HOUR,
ALL_HOUR_STATUS.THE_STATUS,
(EXTRACT(HOUR FROM
(COALESCE(LEAD(THE_TIME)
OVER (
PARTITION BY NULL
ORDER BY THE_TIME ASC ), TO_TIMESTAMP(THE_DAY, 'MM/DD/YYYY') + NUMTODSINTERVAL(THE_HOUR + 1, 'HOUR')) - THE_TIME)) * 60)
+
EXTRACT(MINUTE FROM
(COALESCE(LEAD(THE_TIME)
OVER (
PARTITION BY NULL
ORDER BY THE_TIME ASC ), TO_TIMESTAMP(THE_DAY, 'MM/DD/YYYY') + NUMTODSINTERVAL(THE_HOUR + 1, 'HOUR')) - THE_TIME))
AS DURATION_IN_STATUS
FROM ALL_HOUR_STATUS)
SELECT
THE_DAY,
THE_HOUR,
COALESCE(AVAILABLE, 0) AS AVAILABLE,
COALESCE(NOT_AVAILABLE, 0) AS NOT_AVAILABLE,
COALESCE(BUSY, 0) AS BUSY
FROM DURATION_IN_STATUS
PIVOT (SUM(DURATION_IN_STATUS)
FOR THE_STATUS
IN ('AVAILABLE' AS AVAILABLE, 'NOT AVAILABLE' AS NOT_AVAILABLE, 'BUSY' AS BUSY)
)
ORDER BY THE_DAY ASC, THE_HOUR ASC;
Резултат:
THE_DAY THE_HOUR AVAILABLE NOT_AVAILABLE BUSY
01/01/2017 0 15 30 15
01/01/2017 1 30 30 0
01/01/2017 2 60 0 0
01/01/2017 3 10 0 50
01/01/2017 4 0 0 60
01/01/2017 5 0 60 0
01/01/2017 6 0 60 0
01/01/2017 7 0 60 0
01/01/2017 8 0 60 0
01/01/2017 9 0 60 0
01/01/2017 10 0 60 0
01/01/2017 11 0 60 0
01/01/2017 12 0 60 0
01/01/2017 13 0 60 0
01/01/2017 14 0 60 0
01/01/2017 15 0 60 0
01/01/2017 16 0 60 0
01/01/2017 17 0 60 0
01/01/2017 18 0 60 0
01/01/2017 19 0 60 0
01/01/2017 20 0 60 0
01/01/2017 21 0 60 0
01/01/2017 22 0 60 0
01/01/2017 23 0 60 0
24 rows selected.
Тази примерна заявка генерира записи за целия ден. И така, последното състояние на NOT AVAILABLE пренася. Ако искате да спрете в момента на последното присвоено състояние, това поведение може да бъде коригирано според нуждите.
РЕДАКТИРАНЕ, в отговор на вашата актуализация, за да оцените тези времена за channel_id и user_id , ето още един пример:
Първо създайте тестовата таблица:
CREATE TABLE INSERT_TIME_STATUS(
USER_ID NUMBER,
CHANNEL_ID NUMBER,
INSERT_TIME TIMESTAMP,
STATUS VARCHAR2(128)
);
И го заредете (тук user_id=1 е на канали 3 и 4, а user_id=2 е само на канал 3):
INSERT INTO INSERT_TIME_STATUS VALUES (1111,3,TO_TIMESTAMP('1/1/2017 0:00','MM/DD/YYYY HH24:MI'),'AVAILABLE');
INSERT INTO INSERT_TIME_STATUS VALUES (1111,3,TO_TIMESTAMP('1/1/2017 0:15','MM/DD/YYYY HH24:MI'),'BUSY');
INSERT INTO INSERT_TIME_STATUS VALUES (1111,3,TO_TIMESTAMP('1/1/2017 0:30','MM/DD/YYYY HH24:MI'),'NOT AVAILABLE');
INSERT INTO INSERT_TIME_STATUS VALUES (1111,3,TO_TIMESTAMP('1/1/2017 1:30','MM/DD/YYYY HH24:MI'),'AVAILABLE');
INSERT INTO INSERT_TIME_STATUS VALUES (1111,3,TO_TIMESTAMP('1/1/2017 3:10','MM/DD/YYYY HH24:MI'),'BUSY');
INSERT INTO INSERT_TIME_STATUS VALUES (1111,3,TO_TIMESTAMP('1/1/2017 5:00','MM/DD/YYYY HH24:MI'),'NOT AVAILABLE');
INSERT INTO INSERT_TIME_STATUS VALUES (1111,4,TO_TIMESTAMP('1/1/2017 0:00','MM/DD/YYYY HH24:MI'),'AVAILABLE');
INSERT INTO INSERT_TIME_STATUS VALUES (1111,4,TO_TIMESTAMP('1/1/2017 0:15','MM/DD/YYYY HH24:MI'),'BUSY');
INSERT INTO INSERT_TIME_STATUS VALUES (1111,4,TO_TIMESTAMP('1/1/2017 0:30','MM/DD/YYYY HH24:MI'),'NOT AVAILABLE');
INSERT INTO INSERT_TIME_STATUS VALUES (1111,4,TO_TIMESTAMP('1/1/2017 1:30','MM/DD/YYYY HH24:MI'),'AVAILABLE');
INSERT INTO INSERT_TIME_STATUS VALUES (1111,4,TO_TIMESTAMP('1/1/2017 3:10','MM/DD/YYYY HH24:MI'),'BUSY');
INSERT INTO INSERT_TIME_STATUS VALUES (1111,4,TO_TIMESTAMP('1/1/2017 5:00','MM/DD/YYYY HH24:MI'),'NOT AVAILABLE');
INSERT INTO INSERT_TIME_STATUS VALUES (2222,3,TO_TIMESTAMP('1/1/2017 0:00','MM/DD/YYYY HH24:MI'),'AVAILABLE');
INSERT INTO INSERT_TIME_STATUS VALUES (2222,3,TO_TIMESTAMP('1/1/2017 0:15','MM/DD/YYYY HH24:MI'),'BUSY');
INSERT INTO INSERT_TIME_STATUS VALUES (2222,3,TO_TIMESTAMP('1/1/2017 0:30','MM/DD/YYYY HH24:MI'),'NOT AVAILABLE');
INSERT INTO INSERT_TIME_STATUS VALUES (2222,3,TO_TIMESTAMP('1/1/2017 1:30','MM/DD/YYYY HH24:MI'),'AVAILABLE');
INSERT INTO INSERT_TIME_STATUS VALUES (2222,3,TO_TIMESTAMP('1/1/2017 3:10','MM/DD/YYYY HH24:MI'),'BUSY');
INSERT INTO INSERT_TIME_STATUS VALUES (2222,3,TO_TIMESTAMP('1/1/2017 5:00','MM/DD/YYYY HH24:MI'),'NOT AVAILABLE');
INSERT INTO INSERT_TIME_STATUS VALUES (2222,3,TO_TIMESTAMP('1/1/2017 5:00','MM/DD/YYYY HH24:MI'),'NOT AVAILABLE');
След това актуализирайте заявката, за да генерира данни за user_id per-channel_id . В този пример данните са включени за всички времена, за всички канали, с които участва всеки потребител. потребител 1 ще има бройки за всеки час от деня за канали 3 и 4 докато потребител-2 ще има бройки за всеки час от деня само за канал 3 (ако има записи на друг канал, този канал също ще бъде включен).
WITH HOUR_OF_DAY AS (SELECT LEVEL - 1 AS THE_HOUR
FROM DUAL
CONNECT BY LEVEL < 25),
CALENDAR AS (SELECT DAY_START
FROM (
SELECT ((SELECT MIN(TRUNC(INSERT_TIME_STATUS.INSERT_TIME))
FROM INSERT_TIME_STATUS) + NUMTODSINTERVAL(DATE_INCREMENT.OFFSET, 'DAY')) AS DAY_START
FROM (SELECT LEVEL - 1 AS OFFSET
FROM DUAL
CONNECT BY LEVEL < 9999) DATE_INCREMENT)
WHERE DAY_START BETWEEN (SELECT MIN(TRUNC(INSERT_TIME_STATUS.INSERT_TIME))
FROM INSERT_TIME_STATUS)
AND (SELECT MAX(TRUNC(INSERT_TIME_STATUS.INSERT_TIME))
FROM INSERT_TIME_STATUS)),
USER_CHANNEL_HOUR_CALENDAR AS (
SELECT
USER_ID,
CHANNEL_ID,
CALENDAR.DAY_START,
TO_CHAR(CALENDAR.DAY_START, 'MM/DD/YYYY') AS THE_DAY,
HOUR_OF_DAY.THE_HOUR,
CALENDAR.DAY_START + NUMTODSINTERVAL(HOUR_OF_DAY.THE_HOUR, 'HOUR') AS HOUR_START
FROM CALENDAR
CROSS JOIN HOUR_OF_DAY
--
CROSS JOIN (SELECT UNIQUE USER_ID, CHANNEL_ID FROM INSERT_TIME_STATUS)
),
HOUR_CALENDAR AS (
SELECT USER_ID,
CHANNEL_ID,
THE_DAY,
THE_HOUR,
DAY_START,
HOUR_START,
(SELECT MAX(INSERT_TIME_STATUS.STATUS)
KEEP (DENSE_RANK LAST
ORDER BY INSERT_TIME_STATUS.INSERT_TIME ASC)
FROM INSERT_TIME_STATUS
WHERE INSERT_TIME_STATUS.INSERT_TIME <= DAY_START + NUMTODSINTERVAL(THE_HOUR, 'HOUR')
AND INSERT_TIME_STATUS.USER_ID = USER_ID
AND INSERT_TIME_STATUS.CHANNEL_ID = CHANNEL_ID) AS HOUR_START_STATUS
FROM USER_CHANNEL_HOUR_CALENDAR),
ALL_HOUR_STATUS AS (
SELECT
HOUR_CALENDAR.USER_ID,
HOUR_CALENDAR.CHANNEL_ID,
HOUR_CALENDAR.THE_DAY,
HOUR_CALENDAR.THE_HOUR,
HOUR_CALENDAR.HOUR_START AS THE_TIME,
HOUR_CALENDAR.HOUR_START_STATUS AS THE_STATUS
FROM HOUR_CALENDAR
UNION ALL
SELECT
INSERT_TIME_STATUS.USER_ID,
INSERT_TIME_STATUS.CHANNEL_ID,
HOUR_CALENDAR.THE_DAY,
HOUR_CALENDAR.THE_HOUR,
INSERT_TIME_STATUS.INSERT_TIME AS THE_TIME,
INSERT_TIME_STATUS.STATUS AS THE_STATUS
FROM HOUR_CALENDAR
INNER JOIN INSERT_TIME_STATUS
ON HOUR_CALENDAR.HOUR_START < INSERT_TIME_STATUS.INSERT_TIME
AND HOUR_CALENDAR.THE_HOUR = EXTRACT(HOUR FROM INSERT_TIME_STATUS.INSERT_TIME)
AND HOUR_CALENDAR.USER_ID = INSERT_TIME_STATUS.USER_ID
AND HOUR_CALENDAR.CHANNEL_ID = INSERT_TIME_STATUS.CHANNEL_ID),
DURATION_IN_STATUS AS (
SELECT
ALL_HOUR_STATUS.USER_ID,
ALL_HOUR_STATUS.CHANNEL_ID,
ALL_HOUR_STATUS.THE_DAY,
ALL_HOUR_STATUS.THE_HOUR,
ALL_HOUR_STATUS.THE_STATUS,
(EXTRACT(HOUR FROM
(COALESCE(LEAD(THE_TIME)
OVER (
PARTITION BY USER_ID, CHANNEL_ID
ORDER BY THE_TIME ASC ), TO_TIMESTAMP(THE_DAY, 'MM/DD/YYYY') + NUMTODSINTERVAL(THE_HOUR + 1, 'HOUR')) - THE_TIME)) * 60)
+
EXTRACT(MINUTE FROM
(COALESCE(LEAD(THE_TIME)
OVER (
PARTITION BY USER_ID, CHANNEL_ID
ORDER BY THE_TIME ASC ), TO_TIMESTAMP(THE_DAY, 'MM/DD/YYYY') + NUMTODSINTERVAL(THE_HOUR + 1, 'HOUR')) - THE_TIME))
AS DURATION_IN_STATUS
FROM ALL_HOUR_STATUS)
SELECT
USER_ID,
CHANNEL_ID,
THE_DAY,
THE_HOUR,
COALESCE(AVAILABLE, 0) AS AVAILABLE,
COALESCE(NOT_AVAILABLE, 0) AS NOT_AVAILABLE,
COALESCE(BUSY, 0) AS BUSY
FROM DURATION_IN_STATUS
PIVOT (SUM(DURATION_IN_STATUS)
FOR THE_STATUS
IN ('AVAILABLE' AS AVAILABLE, 'NOT AVAILABLE' AS NOT_AVAILABLE, 'BUSY' AS BUSY)
)
-- You can additionally filter the result
-- WHERE CHANNEL_ID IN (3,4)
-- WHERE USER_ID = 12345
-- WHERE THE_DAY > TO_CHAR(DATE '2017-01-01')
-- etc.
ORDER BY USER_ID ASC, CHANNEL_ID ASC, THE_DAY ASC, THE_HOUR ASC;
След това го тествайте:
USER_ID CHANNEL_ID THE_DAY THE_HOUR AVAILABLE NOT_AVAILABLE BUSY
1111 3 01/01/2017 0 15 30 15
1111 3 01/01/2017 1 30 30 0
1111 3 01/01/2017 2 60 0 0
1111 3 01/01/2017 3 10 0 50
1111 3 01/01/2017 4 0 0 60
1111 3 01/01/2017 5 0 60 0
1111 3 01/01/2017 6 0 60 0
...
1111 3 01/01/2017 23 0 60 0
1111 4 01/01/2017 0 15 30 15
1111 4 01/01/2017 1 30 30 0
1111 4 01/01/2017 2 60 0 0
1111 4 01/01/2017 3 10 0 50
1111 4 01/01/2017 4 0 0 60
1111 4 01/01/2017 5 0 60 0
1111 4 01/01/2017 6 0 60 0
...
1111 4 01/01/2017 23 0 60 0
2222 3 01/01/2017 0 15 30 15
2222 3 01/01/2017 1 30 30 0
2222 3 01/01/2017 2 60 0 0
2222 3 01/01/2017 3 10 0 50
2222 3 01/01/2017 4 0 0 60
2222 3 01/01/2017 5 0 60 0
2222 3 01/01/2017 6 0 60 0
