Re: looking for documentation about the optimizer

"Alice Lottini" <alice_lottini@yahoo.it> writes:
> Does anybody know where I can find some documentation about the PostgreSQL =
> optimizer?

Aside from the general info in the Developer's Guide, there are README
files in the source tree that you should look at:
    src/backend/optimizer/README
    src/backend/optimizer/plan/README
After that, start reading the code ...

            regards, tom lane