日付の使用:
SELECT smth... FROM some_tab
WHERE your_date IN
( -- remove unnecessary columns, leave only what you select in outer query
-- or select *
SELECT start_date
, TRUNC(start_date, 'iw') wk_starts
, TRUNC(start_date, 'iw') + 7 - 1/86400 wk_ends
, TO_NUMBER (TO_CHAR (start_date, 'IW')) ISO_wk#
FROM
(
SELECT (start_date-1) + LEVEL AS start_date
FROM
( -- replace this part with selecting your start and end dates from your table --
SELECT to_date('03/21/2013', 'MM/DD/YYYY') end_date
, to_date('03/19/2013', 'MM/DD/YYYY') start_date
FROM dual
)
CONNECT BY LEVEL <= (end_date - start_date)
)
) -- your outer query ends --
/
START_DATE WK_STARTS WK_ENDS ISO_WK#
----------------------------------------------------------
3/19/2013 3/18/2013 3/24/2013 11:59:59 PM 12
3/20/2013 3/18/2013 3/24/2013 11:59:59 PM 12
年次表と ISO 週数など... 開始日と終了日に任意の日付を使用します。接続日と接続日数は、その場でテーブルを生成するために使用されます。ハード構造を使用している場合は between 演算子を使用できます...:
SELECT start_date
, TRUNC(start_date, 'iw') wk_starts
, TRUNC(start_date, 'iw') + 7 - 1/86400 wk_ends
, TO_NUMBER (TO_CHAR (start_date, 'IW')) ISO_wk#
FROM
(-- This part simplifies above formatting and optional --
SELECT (start_date-1) + LEVEL AS start_date
FROM
(-- Replace start/end dated with any dates --
SELECT TRUNC(ADD_MONTHS (SYSDATE, 12), 'Y')-1 end_date
, TRUNC(SYSDATE, 'YEAR') start_date
FROM dual
)
CONNECT BY LEVEL <= (end_date - start_date) -- number of days between dates
)
/
START_DATE WK_STARTS WK_ENDS ISO_WK#
-----------------------------------------------------------
1/1/2013 12/31/2012 1/6/2013 11:59:59 PM 1
1/2/2013 12/31/2012 1/6/2013 11:59:59 PM 1
1/3/2013 12/31/2012 1/6/2013 11:59:59 PM 1
...
12/28/2013 12/23/2013 12/29/2013 11:59:59 PM 52
12/29/2013 12/23/2013 12/29/2013 11:59:59 PM 52
12/30/2013 12/30/2013 1/5/2014 11:59:59 PM 1