How to find the difference between two dates in time except Sunday
Hi allI have a table, as shown below.
SQL> select * from test;
TR_ID CREATE_TIME CODE
-------------------------------------------------- --------------------------------------------------------------------------- ----------
S12341 05-JUN-12 12.20.52.403000 AM 1003
S12342 11-JUN-12 11.15.33.182000 AM 1003
S12342 07-JUN-12 12.00.36.573000 PM 1002
S12343 20-JUN-12 12.34.37.102000 AM 1003
S12343 15-JUN-12 11.34.27.141000 PM 1002
S12344 01-JUL-12 10.01.06.657000 PM 1002
S12344 06-JUL-12 12.01.04.188000 AM 1003
S12341 31-MAY-12 11.20.38.529000 PM 1002
I would like to know the difference between same tr_ids create_time, which should give out in hours except Sunday.For example:
TR_ID: S12344
1002_Create_time: July 1, 12 PM 10.01.06.657000 (i.e. Sunday)
1003_Create_time: 12.01.04.188000 AM 6 July 12
1002 create time is 22:00 Sunday.
If the query must exclude only the hours of Sunday which is 10 p.m. to Monday 00 h which is 2 Hrs.
I tried the sub query after doing a search on this forum but I am not getting the desired output.
SELECT count(*) FROM (SELECT ROWNUM RNUM,tr_id,create_time CT_1002 FROM test c WHERE c.tr_id='S12344' and
ROWNUM <= (select (cast(a.create_time as date)-cast((select create_time from test b where a.tr_id=b.tr_id and code=1002) as date))
from test a where a.code=1003 and a.tr_id=c.tr_id) + 1) d
WHERE to_char(cast((select create_time from test e where e.tr_id=d.tr_id and code=1002) as date) + RNUM - 1, 'DY') NOT IN('SUN');
Need help to get the desired o/p
Hello
If I unederstand the problem correctly, that's what you want:
WITH got_extrema AS
(
SELECT tr_id
, CAST (MIN (create_time) AS DATE) AS start_date
, CAST (MAX (create_time) AS DATE) AS end_date
FROM test
GROUP BY tr_id
)
SELECT tr_id
, start_date, end_date -- If wanted
, 24 * ( ( ( TRUNC (end_date, 'IW') -- Count -1 day for every full week
- TRUNC (start_date, 'IW')
)
/ -7
)
+ LEAST ( end_date -- If end_date is a Sunday
, TRUNC (end_date, 'IW') + 6 -- consider it 00:00:00 on Sunday
)
- CASE
WHEN start_date >= TRUNC (start_date, 'IW') + 6 -- If start_date is a Sunday
THEN TRUNC (start_date, 'IW') + 6 -- consider it 00:00:00 Sunday
ELSE start_date
END
) AS total_hours
FROM got_extrema
;
I guess that you don't need to worry about fractions of a second. As you did in the code you have posted, I am to convert the TIMESTAMP to date values, because of DATE arithmetic and functions are so much better than what is available for timestamps.
Basically, it's just to find the number of days between start_date and end_date and multiplying by 24, with these twists:
(a) 1 day is deducted for each week between start_date and end_date
(b) if End_date is a Sunday, none of the end_date himself hours are counted
(c) If start_date is a Sunday, then all the start_date himself hours are counted. Why these hours should be counted? Because 1 day is already being deducted for the week which includes start_date, which contains only this Sunday.
TRUNC (dt, 'IW') is the beginning of the ISO week containing dt; in other words, 00:00:00 the or before the dt last Monday. This is not the NLS parameters.
Of course, I can't test without some sample data and the exact results you want from these data. You may need a little something more If start_date and end_date are both on the same Sunday.
Whenever you have a problem, please post a small example of data (CREATE TABLE and only relevant columns, INSERT statements) of all of the tables involved.
Also post the results you want from this data, as well as an explanation of how you get these results from these data, with specific examples.
Always tell what version of Oracle you are using.
See the FAQ forum {message identifier: = 9360002}
Tags: Database
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