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From Walter Cai
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Msg-id CAGCAsriOqeytNOJP6wywLPHQaTZ38j+UqxW1gi_r+zyNagQwqg@mail.gmail.com
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Hi,

I (a graduate student) am currently trying to modify a postgres instance slightly to incorporate my modified cardinality estimates. In order to run these experiments I'm hoping to access the raw values for selections predicates from within the calc_joinrel_size_estimate method (in costsize.c). For example, if the restriction

WHERE name_attr = "example_str"

appears in the query, I'd like to get the "name_attr" and "example_str" values. If possible, I would very much appreciate the help.

Best, Walter

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