On Mon, Sep 03, 2018 at 06:59:10PM -0700, Noah Misch wrote: > If you're going to keep this highly-simplified estimate, please expand the > comment to say why it doesn't matter or what makes it hard to do better. The > non-planunionor.c path for the same query computes its own estimate of the > same underlying quantity. Though it may be too difficult in today's system, > one could copy the competing path's row count estimate here. Perhaps it > doesn't matter because higher-level processing already assumes equal row count > among competitors?
As there has been no replies to Noah's review for one month, I am marking this patch as returned with feedback for now. -- Michael
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