Обсуждение: what's the relation between pathkey and path in optimize phase?

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what's the relation between pathkey and path in optimize phase?

От
sunpeng
Дата:
what's the relation between pathkey and path in optimize phase?
thanks
peng

Re: what's the relation between pathkey and path in optimize phase?

От
Tom Lane
Дата:
sunpeng <bluevaley@gmail.com> writes:
> what's the relation between pathkey and path in optimize phase?

pathkey is a data structure representing the ordering of a path.
Have you read src/backend/optimizer/README ?

            regards, tom lane