Re: Limitations of PostgreSQL
От | Scott Marlowe |
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Тема | Re: Limitations of PostgreSQL |
Дата | |
Msg-id | 1129222134.29961.204.camel@state.g2switchworks.com обсуждение исходный текст |
Ответ на | Re: Limitations of PostgreSQL ("Dean Gibson (DB Administrator)" <postgresql4@ultimeth.com>) |
Ответы |
Re: Limitations of PostgreSQL
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Список | pgsql-general |
I have to admit, my thoughts on it were to build a query with case statements in it and execute it. That sounds about like you're proposing, right? On Thu, 2005-10-13 at 11:30, Dean Gibson (DB Administrator) wrote: > What's the point of a binary search if the list is small enough to fit > on a line or two? And if a query can be substituted for N1-NN, you have > to read all the values anyway, and then the function is trivially > expressed as a normal query with no decrease in speed. > > -- Dean > > On Wed, 2005-10-12 at 20:08, Michael Fuhr wrote: > > > >> Here's an excerpt from the MySQL documentation: > >> INTERVAL(N,N1,N2,N3,...) > >> Returns 0 if N < N1, 1 if N < N2 and so on or -1 if N is > >> NULL. All arguments are treated as integers. It is required > >> that N1 < N2 < N3 < ... < Nn for this function to work > >> correctly. This is because a binary search is used (very fast). > >> > > > ---------------------------(end of broadcast)--------------------------- > TIP 1: if posting/reading through Usenet, please send an appropriate > subscribe-nomail command to majordomo@postgresql.org so that your > message can get through to the mailing list cleanly
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