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help / color / mirror / Atom feedFrom: Paul M. Aoki <aoki@cs.berkeley.edu>
To: Robert.Patrick@cs.cmu.edu
Cc: postgres@postgres.Berkeley.EDU
Subject: Re: More on: Limit to where clause length?
Date: Tue, 04 Oct 94 23:02:28 -0700
Message-ID: <199410050602.XAA20567@faerie.CS.Berkeley.EDU> (raw)
In-Reply-To: <ciYUg4K00hMdAUgLxC@cs.cmu.edu>
Robert.Patrick@cs.cmu.edu writes:
> It appears that I can execute any combination of and's and or's in a
> where clause as long as I don't access more than 3 tables. The minute I
> try to access 4 tables, even in a simpler query, Postgres simply returns
> an empty table, even if there are tuples which match the query.
src/examples/chapter15 contains several four-way joins.
there is no hardwired limit on the number of tables that you can
reference in a query, though (as recently mentioned) there are some
8kb buffers awaiting the unwary.
--
Paul M. Aoki | University of California at Berkeley
aoki@CS.Berkeley.EDU | Dept. of EECS, Computer Science Division (#1776)
| Berkeley, CA 94720-1776
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To: postgres@postgres.berkeley.edu
Cc: aoki@cs.berkeley.edu, Robert.Patrick@cs.cmu.edu
Subject: Re: More on: Limit to where clause length?
In-Reply-To: <199410050602.XAA20567@faerie.CS.Berkeley.EDU>
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