Re: Novice PL/pgSQL question and example
От | Tim Landscheidt |
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Тема | Re: Novice PL/pgSQL question and example |
Дата | |
Msg-id | m3r5ov8m19.fsf@passepartout.tim-landscheidt.de обсуждение исходный текст |
Ответ на | Re: Novice PL/pgSQL question and example (James Long <pgsql-novice@museum.rain.com>) |
Ответы |
Re: Novice PL/pgSQL question and example
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Список | pgsql-novice |
James Long <pgsql-novice@museum.rain.com> wrote: > [...] > Is that as good as this can get, or is there a simpler way, more > along the lines of the first version? I'm not certain that I get the gist of your share_costs () function, but why not just something functional along the lines of: | tim=# SELECT G.A, TRUNC(90.0 / 7, 2) + | tim-# CASE | tim-# WHEN ROW_NUMBER() OVER (ORDER BY G.A) <= 100 * (90 - 7 * TRUNC(90.0 / 7, 2)) THEN | tim-# 0.01 | tim-# ELSE | tim-# 0.00 | tim-# END | tim-# FROM generate_series(1, 7) AS G(A); | a | ?column? | ---+---------- | 1 | 12.86 | 2 | 12.86 | 3 | 12.86 | 4 | 12.86 | 5 | 12.86 | 6 | 12.85 | 7 | 12.85 | (7 Zeilen) | tim=# Tim
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