select
to_char(SD, 'yyyymmdd') as SD,
to_char(ED, 'yyyymmdd') as ED
from
( -- prepare gaps in each A after removing all B
select
BED + 1 as SD,
lead(BSD, 1, AED + 1) over (partition by ASD,AED order by BSD) - 1 as ED
from
( -- prepare all intersections between A and B
select AA.sd as ASD, AA.ed as AED, BB.sd as BSD, BB.ed as BED
from AA join BB on least(AA.ed, BB.ed) >= greatest(AA.sd, BB.sd)
union all
select AA.sd, AA.ed, to_date('1000','yyyy'), AA.sd - 1
from AA
)
)
where SD <= ED -- exclude empty gaps
order by 1
Find Gaps in Date Ranges using sql in Oracle
-
24-03-2022 - |
문제
I need to find Gaps between DateRanges of base and test ranges using sql.here is my example SD and ED are start and End Dates. all rows for both A and B are in same table.
A's Date
ID SD ED
A 20130101 20130531
A 20130601 20131031
B's Date
ID SD ED
B 20130120 20130420
B 20130601 20130830
B 20130910 20131130
Output should be: the Dates that are in A but are not in B with no dates overlaps
Missing Gap Ranges
SD ED
20130101 20130119
20130421 20130531
20130831 20130909
i looked at some example in here http://asktom.oracle.com/pls/apex/f?p=100:11:0::::P11_QUESTION_ID:529176000346581356 but they did not scenario like mine.
해결책
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