Re: How to make a IN without a table... ?
От | David Pradier |
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Тема | Re: How to make a IN without a table... ? |
Дата | |
Msg-id | 20030612122446.GE680@apartia.fr обсуждение исходный текст |
Ответ на | Re: How to make a IN without a table... ? (Christoph Haller <ch@rodos.fzk.de>) |
Список | pgsql-sql |
On Thu, Jun 12, 2003 at 02:10:06PM +0200, Christoph Haller wrote: > > > > These values are not taken in a table, but put in directly. > > > > I guess i wasn't clear enough. > > "my_function" here is a function which calculate some results about > some > > datas from the database. > > Example : a function which would calculate the sum of the money (which > > > would be stored in the database by movement, ie amount + date + cause > + > > account) spent by user my_var1 during period my_var2. > > > I am not sure I'm getting it right. > The first statement suggests the data is coming from outside the > database. > The second suggests it is derived from the database though. > And now it sounds like you could use table functions. > Can you confirm that? > > Regards, Christoph The arguments of the functions come from outside the database, but the function itself uses the datas in the database. Like "Tell me how much i spent between the 4th and the 7th og this month ?" uses 4 and 7 as arguments, but need to fetch the datas in the database. Clear enough ? :-) What do you mean by table function ? Regards, David -- dpradier@apartia.fr 01.46.47.21.33
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