Re: [HACKERS] path toward faster partition pruning

On 21 February 2018 at 23:44, Amit Langote
<Langote_Amit_f8@lab.ntt.co.jp> wrote:
> Please find attached updated patches.

Thanks for updating the code.

The question I have now is around NULL handling in
partkey_datum_from_expr(). I've not managed to find a way to get a
NULL Const in there as it seems all the clauses I try get removed
somewhere earlier in planning. Do you know for a fact that a NULL
Const is impossible to get there?

I'm having to add some NULL handling there for the run-time pruning
patch but wondered if it was also required for your patch.


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 David Rowley                   http://www.2ndQuadrant.com/
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