"Akshat Nair" <akshat.nair@gmail.com> writes:
> Can I get the grammar for the explain output?

There isn't one, it's just text and subject to change at a moment's
notice :-(. The past proposals that we format it a bit more rigidly
have so far foundered for lack of a workable definition of what the
structure should be. It's still an open problem to devise that
definition.

regards, tom lane

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