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Results tagged with gaps-and-islands
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user 220148
Gaps and islands problems involve finding a range of missing values (gaps) or a range of consecutive values (islands) in a sequence of numbers or dates.
1
vote
Find out students max no of times not enrolled consecutively in a subject
Here is a way to get the desired result without window functions:
select sq.student, max(sq.gap) as gap
from (
select t1.student,
min((t2.year + ((cast(substring(t2.term,2,1) as decimal(6,2))- …
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