(この Database SQL Fiddleを考えると)
以下のクエリの where between 句のすぐ外側にある前の VALUE を選択するにはどうすればよいですか?
これが可能であれば、VBA Excel ADODB マクロでこの値を見つけるために必要な他のクエリが不要になります。私は現在、「WHERE BETWEEN TIMESTAMP and TIMESTAMP」検索を拡大しながらループしているため、タイムスタンプの前の値が見つかるまで指数関数的に検索します。
最後の選択ステートメントの時間加重平均 (TWA) は、最初の間隔の開始時に実際の値がない場合、正確ではありません (その間の他のすべての間隔は問題なく、クエリは正常に実行されます)。Oracle 11GR1 インスタンスにプッシュされるデータはランダムであり、大きなギャップが存在する可能性があるため、これはまったくわかりません。したがって、値は、時間、日、月、場合によっては年には存在しません。
-- Lets Begin the Query
WITH INPUTS AS (
SELECT RECNM,
TO_TIMESTAMP_TZ ( '15-01-01 00:10:00 AMERICA/LOS_ANGELES','RR-MM-DD HH24:MI:SS TZR' ) AS START_TIME,
TO_TIMESTAMP_TZ ( '15-01-01 00:30:59 AMERICA/LOS_ANGELES','RR-MM-DD HH24:MI:SS TZR' ) AS END_TIME
FROM POINTS
WHERE ACRONYM = 'WELL32-PSI'
) ,
ALL_INTERVALS AS (
SELECT RECNM,
START_TIME + NUMTODSINTERVAL ( ( LEVEL-1 ) , 'MINUTE' ) AS TIME
FROM INPUTS
CONNECT BY
LEVEL-1 <=
EXTRACT ( DAY FROM END_TIME - START_TIME ) * 24 * 60 +
EXTRACT ( HOUR FROM END_TIME - START_TIME ) * 60 +
EXTRACT ( MINUTE FROM END_TIME - START_TIME )
) ,
ALL_TIMES AS (
SELECT
TIME,
VALUE,
1 AS HAS_VALUE
FROM HST H
INNER JOIN INPUTS I
ON ( H.RECNM = I.RECNM
AND H.TIME BETWEEN CAST ( I.START_TIME AS TIMESTAMP )
AND CAST ( I.END_TIME AS TIMESTAMP ) )
UNION ALL
SELECT
TIME,
NULL,
0
FROM ALL_INTERVALS
ORDER BY TIME,1, 2 NULLS FIRST
) ,
LEAD_LAG_TIMES AS (
SELECT
TIME,
LAST_VALUE ( VALUE IGNORE NULLS ) OVER ( ORDER BY TIME ASC, VALUE ASC ) AS VALUE,
24 * 60 * 60 * EXTRACT ( DAY FROM LEAD ( TIME ) OVER ( ORDER BY TIME ASC,VALUE ASC ) -TIME ) +
60 * 60 * EXTRACT ( HOUR FROM LEAD ( TIME ) OVER ( ORDER BY TIME ASC,VALUE ASC ) -TIME ) +
60 * EXTRACT ( MINUTE FROM LEAD ( TIME ) OVER ( ORDER BY TIME ASC,VALUE ASC ) -TIME ) +
EXTRACT ( SECOND FROM LEAD ( TIME ) OVER ( ORDER BY TIME ASC,VALUE ASC ) -TIME ) AS DURATION
FROM ALL_TIMES
)
SELECT CAST ( TRUNC ( TIME,'MI' ) AS TIMESTAMP WITH TIME ZONE ) AS TIME,
SUM ( VALUE * DURATION ) / SUM ( DURATION ) AS TWA,
SUM ( DURATION ) AS TOTAL_DURATION
FROM LEAD_LAG_TIMES
GROUP BY CAST ( TRUNC ( TIME,'MI' ) AS TIMESTAMP WITH TIME ZONE )
ORDER BY TIME ASC
例
2015-01-01 00:00:00 AMERICA/LOS_ANGELES 63.3
2015-01-01 00:00:08 AMERICA/LOS_ANGELES 63.7
2015-01-01 00:00:17 AMERICA/LOS_ANGELES 64.6
2015-01-01 00:00:28 AMERICA/LOS_ANGELES 66.3
2015-01-01 00:00:45 AMERICA/LOS_ANGELES 66.8
2015-01-01 00:00:55 AMERICA/LOS_ANGELES 67.5
2015-01-01 00:01:11 AMERICA/LOS_ANGELES 67.0
2015-01-01 00:01:30 AMERICA/LOS_ANGELES 67.4
2015-01-01 00:01:40 AMERICA/LOS_ANGELES 67.9
2015-01-01 00:01:50 AMERICA/LOS_ANGELES 68.7
2015-01-01 00:02:01 AMERICA/LOS_ANGELES 68.2
2015-01-01 00:02:11 AMERICA/LOS_ANGELES 67.1
2015-01-01 00:02:21 AMERICA/LOS_ANGELES 66.5
2015-01-01 00:02:31 AMERICA/LOS_ANGELES 65.5
2015-01-01 00:02:46 AMERICA/LOS_ANGELES 65.0
2015-01-01 00:02:59 AMERICA/LOS_ANGELES 64.6
2015-01-01 00:03:15 AMERICA/LOS_ANGELES 64.1
2015-01-01 00:03:25 AMERICA/LOS_ANGELES 63.2
2015-01-01 00:03:35 AMERICA/LOS_ANGELES 62.7
2015-01-01 00:04:05 AMERICA/LOS_ANGELES 62.2
2015-01-01 00:04:32 AMERICA/LOS_ANGELES 61.8
2015-01-01 00:05:40 AMERICA/LOS_ANGELES 61.3
2015-01-01 00:05:55 AMERICA/LOS_ANGELES 60.8-----Not Included in where between but this value is needed
2015-01-01 00:10:20 AMERICA/LOS_ANGELES 60.3--------- Included in where between
2015-01-01 00:10:38 AMERICA/LOS_ANGELES 60.9
2015-01-01 00:10:48 AMERICA/LOS_ANGELES 61.3
2015-01-01 00:10:58 AMERICA/LOS_ANGELES 61.8
2015-01-01 00:11:27 AMERICA/LOS_ANGELES 62.3
2015-01-01 00:13:54 AMERICA/LOS_ANGELES 61.8
2015-01-01 00:14:10 AMERICA/LOS_ANGELES 61.4
2015-01-01 00:14:41 AMERICA/LOS_ANGELES 60.9
2015-01-01 00:15:18 AMERICA/LOS_ANGELES 61.4
2015-01-01 00:15:51 AMERICA/LOS_ANGELES 60.9
2015-01-01 00:16:19 AMERICA/LOS_ANGELES 60.4
2015-01-01 00:16:32 AMERICA/LOS_ANGELES 59.9
2015-01-01 00:17:04 AMERICA/LOS_ANGELES 59.4
2015-01-01 00:17:27 AMERICA/LOS_ANGELES 59.9
2015-01-01 00:17:37 AMERICA/LOS_ANGELES 59.4
2015-01-01 00:17:58 AMERICA/LOS_ANGELES 59.0
2015-01-01 00:18:22 AMERICA/LOS_ANGELES 59.4
2015-01-01 00:18:50 AMERICA/LOS_ANGELES 59.9
2015-01-01 00:19:00 AMERICA/LOS_ANGELES 60.3
2015-01-01 00:19:25 AMERICA/LOS_ANGELES 60.8
2015-01-01 00:19:34 AMERICA/LOS_ANGELES 61.4
2015-01-01 00:19:45 AMERICA/LOS_ANGELES 62.1
2015-01-01 00:19:55 AMERICA/LOS_ANGELES 62.5
2015-01-01 00:20:30 AMERICA/LOS_ANGELES 63.0
2015-01-01 00:20:51 AMERICA/LOS_ANGELES 63.5
2015-01-01 00:21:03 AMERICA/LOS_ANGELES 63.9
2015-01-01 00:22:04 AMERICA/LOS_ANGELES 64.4
2015-01-01 00:22:28 AMERICA/LOS_ANGELES 64.8
2015-01-01 00:23:17 AMERICA/LOS_ANGELES 64.4
2015-01-01 00:23:27 AMERICA/LOS_ANGELES 63.9
2015-01-01 00:24:31 AMERICA/LOS_ANGELES 63.4
2015-01-01 00:26:06 AMERICA/LOS_ANGELES 63.0
2015-01-01 00:27:20 AMERICA/LOS_ANGELES 62.5
2015-01-01 00:27:30 AMERICA/LOS_ANGELES 61.9
2015-01-01 00:28:08 AMERICA/LOS_ANGELES 62.4
2015-01-01 00:28:37 AMERICA/LOS_ANGELES 62.0
2015-01-01 00:29:21 AMERICA/LOS_ANGELES 62.5
2015-01-01 00:29:38 AMERICA/LOS_ANGELES 62.9
2015-01-01 00:31:27 AMERICA/LOS_ANGELES 62.5
2015-01-01 00:32:01 AMERICA/LOS_ANGELES 62.0
2015-01-01 00:32:25 AMERICA/LOS_ANGELES 62.5
2015-01-01 00:35:07 AMERICA/LOS_ANGELES 62.9
2015-01-01 00:35:56 AMERICA/LOS_ANGELES 62.5
2015-01-01 00:36:06 AMERICA/LOS_ANGELES 62.0
2015-01-01 00:36:59 AMERICA/LOS_ANGELES 61.5
2015-01-01 00:39:31 AMERICA/LOS_ANGELES 62.0
2015-01-01 00:40:12 AMERICA/LOS_ANGELES 61.5
2015-01-01 00:40:22 AMERICA/LOS_ANGELES 60.9
2015-01-01 00:40:35 AMERICA/LOS_ANGELES 60.5
2015-01-01 00:40:55 AMERICA/LOS_ANGELES 60.0
2015-01-01 00:41:22 AMERICA/LOS_ANGELES 60.5
2015-01-01 00:41:46 AMERICA/LOS_ANGELES 60.1
2015-01-01 00:42:31 AMERICA/LOS_ANGELES 60.6