*Edit
I have the below table:
Table W
No action_dt type status
1 5/6/2008 10:55:11 PM CREATE APPROVED
1 1/3/2013 9:52:01 AM UPDATE APPROVED
1 1/3/2013 9:57:26 AM UPDATE APPROVED
1 4/21/2015 2:19:04 PM UPDATE APPROVED
1 10/27/2016 10:40:19 AM UPDATE APPROVED
1 2/19/2018 4:18:18 PM UPDATE APPROVED
1 11/13/2018 4:13:38 PM UPDATE NEW
1 11/15/2018 9:44:55 AM UPDATE APPROVED
1 7/17/2019 2:21:52 PM UPDATE PENDING
1 7/17/2019 2:21:52 PM UPDATE NEW
1 7/17/2019 2:47:31 PM UPDATE APPROVED
Exprected Results:
No Action_dt type status start_dt End_dt
1 5/6/2008 10:55:11 PM CREATE APPROVED 5/6/2008 10:55:11 PM 5/6/2008 10:55:11 PM
1 1/3/2013 9:52:01 AM UPDATE APPROVED 1/3/2013 9:52:01 AM 1/3/2013 9:52:01 AM
1 1/3/2013 9:57:26 AM UPDATE APPROVED 1/3/2013 9:57:26 AM 1/3/2013 9:57:26 AM
1 4/21/2015 2:19:04 PM UPDATE APPROVED 4/21/2015 2:19:04 PM 4/21/2015 2:19:04 PM
1 10/27/2016 10:40:19 AM UPDATE APPROVED 10/27/2016 10:40:19 AM 10/27/2016 10:40:19 AM
1 2/19/2018 4:18:18 PM UPDATE APPROVED 2/19/2018 4:18:18 PM 2/19/2018 4:18:18 PM
1 11/13/2018 4:13:38 PM UPDATE NEW 11/13/2018 4:13:38 PM
1 11/15/2018 9:44:55 AM UPDATE APPROVED 11/15/2018 9:44:55 AM 11/15/2018 9:44:55 AM
1 7/17/2019 2:21:52 PM UPDATE PENDING
1 7/17/2019 2:21:52 PM UPDATE NEW 7/17/2019 2:21:52 PM
1 7/17/2019 2:47:31 PM UPDATE APPROVED 7/17/2019 2:47:31 PM 7/17/2019 2:47:31 PM
Now I need to fill in the missing start_dt and end_dt
row 9 Update Pending is NULL I need to take the first above row when request type = create or update and status = new
end_dt row 7,9,10
Take the below first date when request type = create or update and status code = approved.
How can one do this? Perhaps using Lead/Lag with Keep in the case expression?
For the missing data. Expected output would be (add this into the above expected results)
Start_dt End_dt
row 7 11/15/2018 9:44:55 AM
row 9 11/13/2018 4:13:38 PM 7/17/2019 2:47:31 PM
row 10 7/17/2019 2:47:31 PM
SQL:
select *
,CASE
--WHEN W.REQUEST_TYPE IN ('CREATE','UPDATE') AND W.STATUS_CD IN ('APPROVED','DENIED') THEN W.ACTION_DT
WHEN W.REQUEST_TYPE IN ('CREATE','UPDATE') AND W.STATUS_CD IN ('NEW','APPROVED') THEN W.ACTION_DT
--WHEN W.REQUEST_TYPE IN ('CREATE','UPDATE') AND W.STATUS_CD IN ('PENDING') THEN W.ACTION_DT
ELSE NULL
END REQUEST_START_DT
,CASE
WHEN W.REQUEST_TYPE IN ('CREATE','UPDATE') AND W.STATUS_CD IN ('APPROVED','DENIED') THEN W.ACTION_DT
--WHEN W.REQUEST_TYPE IN ('CREATE','UPDATE') AND W.STATUS_CD IN ('PENDING') THEN LEAD((W.ACTION_DT) KEEP (DENSE_RANK ORDER BY W.STATUS_CD) OVER (PARTITION BY ORG_NO) end)
ELSE NULL
END REQUEST_END_DT
FROM APEXIM.CRD_ORG_WORK W
WHERE 1=1
AND W.NO = 1
from W
Use LAG( CASE WHEN <your matches> THEN action_dt END ) (or LEAD) with the IGNORE NULLS option to skip the rows that do not match the CASE statement.
Oracle Setup:
CREATE TABLE w ( no, action_dt, request_type, status ) AS
SELECT 1, DATE '2008-05-06' + INTERVAL '22:55:11' HOUR TO SECOND, 'CREATE', 'APPROVED' FROM DUAL UNION ALL
SELECT 1, DATE '2013-01-03' + INTERVAL '09:52:01' HOUR TO SECOND, 'UPDATE', 'APPROVED' FROM DUAL UNION ALL
SELECT 1, DATE '2013-01-03' + INTERVAL '09:57:26' HOUR TO SECOND, 'UPDATE', 'APPROVED' FROM DUAL UNION ALL
SELECT 1, DATE '2015-04-21' + INTERVAL '14:19:04' HOUR TO SECOND, 'UPDATE', 'APPROVED' FROM DUAL UNION ALL
SELECT 1, DATE '2016-10-27' + INTERVAL '10:40:19' HOUR TO SECOND, 'UPDATE', 'APPROVED' FROM DUAL UNION ALL
SELECT 1, DATE '2018-02-19' + INTERVAL '16:18:18' HOUR TO SECOND, 'UPDATE', 'APPROVED' FROM DUAL UNION ALL
SELECT 1, DATE '2018-11-13' + INTERVAL '16:13:38' HOUR TO SECOND, 'UPDATE', 'NEW' FROM DUAL UNION ALL
SELECT 1, DATE '2018-11-15' + INTERVAL '09:44:55' HOUR TO SECOND, 'UPDATE', 'APPROVED' FROM DUAL UNION ALL
SELECT 1, DATE '2019-07-17' + INTERVAL '14:21:52' HOUR TO SECOND, 'UPDATE', 'PENDING' FROM DUAL UNION ALL
SELECT 1, DATE '2019-07-17' + INTERVAL '14:21:52' HOUR TO SECOND, 'UPDATE', 'NEW' FROM DUAL UNION ALL
SELECT 1, DATE '2019-07-17' + INTERVAL '14:47:31' HOUR TO SECOND, 'UPDATE', 'APPROVED' FROM DUAL
Query:
SELECT w.*,
CASE
WHEN request_type IN ( 'CREATE', 'UPDATE' ) AND status IN ( 'NEW', 'APPROVED' )
THEN action_dt
WHEN request_type IN ( 'CREATE', 'UPDATE' ) AND status = 'PENDING'
THEN LAG( CASE WHEN request_type IN ( 'CREATE', 'UPDATE' ) AND status = 'NEW' THEN action_dt END )
IGNORE NULLS OVER ( PARTITION BY no ORDER BY action_dt )
ELSE NULL
END AS start_dt,
CASE
WHEN request_type IN ( 'CREATE', 'UPDATE' ) AND status IN ( 'NEW', 'APPROVED' )
THEN action_dt
WHEN request_type IN ( 'CREATE', 'UPDATE' ) AND status = 'PENDING'
THEN LEAD( CASE WHEN request_type IN ( 'CREATE', 'UPDATE' ) AND status = 'APPROVED' THEN action_dt END )
IGNORE NULLS OVER ( PARTITION BY no ORDER BY action_dt )
ELSE NULL
END AS end_dt
FROM w
Output:
NO | ACTION_DT | REQUEST_TYPE | STATUS | START_DT | END_DT -: | :------------------ | :----------- | :------- | :------------------ | :------------------ 1 | 2008-05-06 22:55:11 | CREATE | APPROVED | 2008-05-06 22:55:11 | 2008-05-06 22:55:11 1 | 2013-01-03 09:52:01 | UPDATE | APPROVED | 2013-01-03 09:52:01 | 2013-01-03 09:52:01 1 | 2013-01-03 09:57:26 | UPDATE | APPROVED | 2013-01-03 09:57:26 | 2013-01-03 09:57:26 1 | 2015-04-21 14:19:04 | UPDATE | APPROVED | 2015-04-21 14:19:04 | 2015-04-21 14:19:04 1 | 2016-10-27 10:40:19 | UPDATE | APPROVED | 2016-10-27 10:40:19 | 2016-10-27 10:40:19 1 | 2018-02-19 16:18:18 | UPDATE | APPROVED | 2018-02-19 16:18:18 | 2018-02-19 16:18:18 1 | 2018-11-13 16:13:38 | UPDATE | NEW | 2018-11-13 16:13:38 | 2018-11-13 16:13:38 1 | 2018-11-15 09:44:55 | UPDATE | APPROVED | 2018-11-15 09:44:55 | 2018-11-15 09:44:55 1 | 2019-07-17 14:21:52 | UPDATE | PENDING | 2018-11-13 16:13:38 | 2019-07-17 14:47:31 1 | 2019-07-17 14:21:52 | UPDATE | NEW | 2019-07-17 14:21:52 | 2019-07-17 14:21:52 1 | 2019-07-17 14:47:31 | UPDATE | APPROVED | 2019-07-17 14:47:31 | 2019-07-17 14:47:31
db<>fiddle here