query datediff btw different rows in the same table

Hello,

I have a table history like this

task    date                     id
start    Oct 1, 2003         abc
end     Oct 3, 2003         abc

I would like find out any id which datediff(day, end, start) >=2,

how can I do this?

Thanks in advance,

Aventis

aventisAsked:
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PontisCommented:


 select distinct id from (select id, date - lag(date)   over (partition by id order by task desc)  diff from table) where diff>=2
/

Analytical functions rule! :)
 
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