Praveen Kumar N <[EMAIL PROTECTED]> writes:

> hai...
>         I have installed postgresql from sourcecode.I would like to know
> how pages are replaced in the bufferpool when we join two relations.I tried to
> trace it by editing files
> pgsql/src/backend/storage/buffer/(bufmgr.c,freelist.c).But i feel still I
> am missing some information after observing extracted information abt buffer
> replacement.


explain select ...

The output may be enlightening.

  Gregory Stark

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