| From: | atorikoshi <torikoshi_atsushi_z2(at)lab(dot)ntt(dot)co(dot)jp> |
|---|---|
| To: | pgsql-hackers(at)postgresql(dot)org |
| Subject: | Fix a typo in README.dependencies |
| Date: | 2017-06-05 02:52:29 |
| Message-ID: | 45b71fc0-50a1-68b4-7e13-a78493f38090@lab.ntt.co.jp |
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| Lists: | pgsql-hackers |
Hi,
I found below formula to compute selectivities, but
I think the last Probability 'P(b=?)' should be 'P(c=?)'.
> P(a=?,b=?,c=?) = P(a=?,b=?) * (d + (1-d)*P(b=?))
Attached patch fixes it, and it also adds some spaces
following another formula which is on line 86 and
computes P(a=?, b=?).
Regards,
--
Atsushi Torikoshi
NIPPON TELEGRAPH AND TELEPHONE CORPORATION
NTT Open Source Software Center
| Attachment | Content-Type | Size |
|---|---|---|
| fix_typo_in_README.dependencies | text/plain | 620 bytes |
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