Re: Recurring and non recurring events.
| От | Pavel Stehule |
|---|---|
| Тема | Re: Recurring and non recurring events. |
| Дата | |
| Msg-id | CAFj8pRDHm3DKKtxQ0N3rT=cft2nMPZbjE2=TszLZmQLxwG0zPQ@mail.gmail.com обсуждение исходный текст |
| Ответ на | Recurring and non recurring events. (Kevin Waterson <kevin.waterson@gmail.com>) |
| Ответы |
Re: Recurring and non recurring events.
|
| Список | pgsql-general |
Hi
2015-12-26 8:28 GMT+01:00 Kevin Waterson <kevin.waterson@gmail.com>:
I wish to set up a table of recurring, and non-recurring events.I have been looking at http://justatheory.com/computers/databases/postgresql/recurring_events.htmlwhich looks nice (complex but nice) and wonder if there was a better option for this in more recent pgsql versions.All pointers gratefully received.
use generate_series
postgres=# select v::date from generate_series(current_date, current_date + 100, interval '7days') g(v);
┌────────────┐
│ v │
╞════════════╡
│ 2015-12-26 │
│ 2016-01-02 │
│ 2016-01-09 │
│ 2016-01-16 │
│ 2016-01-23 │
│ 2016-01-30 │
│ 2016-02-06 │
│ 2016-02-13 │
│ 2016-02-20 │
│ 2016-02-27 │
│ 2016-03-05 │
│ 2016-03-12 │
│ 2016-03-19 │
│ 2016-03-26 │
│ 2016-04-02 │
└────────────┘
(15 rows)
postgres=# select v::date from generate_series(current_date, current_date + 100, interval '7days') g(v);
┌────────────┐
│ v │
╞════════════╡
│ 2015-12-26 │
│ 2016-01-02 │
│ 2016-01-09 │
│ 2016-01-16 │
│ 2016-01-23 │
│ 2016-01-30 │
│ 2016-02-06 │
│ 2016-02-13 │
│ 2016-02-20 │
│ 2016-02-27 │
│ 2016-03-05 │
│ 2016-03-12 │
│ 2016-03-19 │
│ 2016-03-26 │
│ 2016-04-02 │
└────────────┘
(15 rows)
Kev
В списке pgsql-general по дате отправления: