Обсуждение: Join Scalability

Hi

Was wondering how/if postgres degrades as the number of tables  joined increases.

I am looking at joining lots (from a few up to  100+) tables in a single query,
All tables will be joined on an indexed integer id, 

I am not concerned about amount of data just if that too many joins may cause the planner problems or each join has additional
overhead etc


Regards,
Darryl

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Darryl Pye <darrylpye@hotmail.com> writes:
> Was wondering how/if postgres degrades as the number of tables  joined increases.

> I am looking at joining lots (from a few up to  100+) tables in a single query,

Don't do it.  Rethink your schema design, instead.  Why do you think you
need to join so many tables in one query?

            regards, tom lane