Re: How to get list of days between two dates?
От | Tim Middleton |
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Тема | Re: How to get list of days between two dates? |
Дата | |
Msg-id | 200606070106.29950.x@vex.net обсуждение исходный текст |
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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Список | pgsql-sql |
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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