Re: How to get list of days between two dates?

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От Tim Middleton
Тема Re: How to get list of days between two dates?
Дата
Msg-id 200606070106.29950.x@vex.net
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Ответ на How to get list of days between two dates?  (Christine Desmuke <cdesmuke@kshs.org>)
Ответы Re: How to get list of days between two dates?
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This is going to be ugly, and I can't even say for sure it's right (and if by 
chance it is right, I imagine it still might be more efficient broken up in a 
function), but intrigued by learning about generate_series() from Scott 
Marlows response I fiddled until I got the results specified like this...

SELECT dt, event_name 
FROM (   SELECT (mn.d + s.d) AS dt    FROM (       SELECT min(start_time) FROM test_events) AS mn(d),
generate_series(0,(                       SELECT (extract('epoch' from age(max(end_time),
min(start_time)))/86400)::integer                       FROM test_events))                        AS s(d))    AS x 
 
JOIN test_events AS y ON (dt BETWEEN start_time AND end_time) 
ORDER BY dt, event_name;
    dt     |  event_name
------------+--------------2006-05-01 | First Event2006-05-02 | First Event2006-05-02 | Second Event2006-05-03 | First
Event2006-05-04| First Event2006-05-04 | Third Event2006-05-05 | Third Event2006-05-07 | Fourth Event
 
(8 rows)

-- 
Tim Middleton | Vex.Net    | "Who is Ungit?" said he, still holding
x@veX.net     | VexTech.ca | my hands. --C.S.Lewis (TWHF)



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