From: | Andres Freund <andres(at)anarazel(dot)de> |
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To: | Tomas Vondra <tomas(dot)vondra(at)enterprisedb(dot)com> |
Cc: | Justin Pryzby <pryzby(at)telsasoft(dot)com>, pgsql-hackers(at)postgresql(dot)org |
Subject: | Re: using extended statistics to improve join estimates |
Date: | 2022-01-04 23:55:50 |
Message-ID: | 20220104235550.dgr4rz6zkjx2rykz@alap3.anarazel.de |
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On 2022-01-01 18:21:06 +0100, Tomas Vondra wrote:
> Here's an updated patch, rebased and fixing a couple typos reported by
> Justin Pryzby directly.
FWIW, cfbot reports a few compiler warnings:
https://cirrus-ci.com/task/6067262669979648?logs=gcc_warning#L505
[18:52:15.132] time make -s -j${BUILD_JOBS} world-bin
[18:52:22.697] mcv.c: In function ‘mcv_combine_simple’:
[18:52:22.697] mcv.c:2787:7: error: ‘reverse’ may be used uninitialized in this function [-Werror=maybe-uninitialized]
[18:52:22.697] 2787 | if (reverse)
[18:52:22.697] | ^
[18:52:22.697] mcv.c:2766:27: error: ‘index’ may be used uninitialized in this function [-Werror=maybe-uninitialized]
[18:52:22.697] 2766 | if (mcv->items[i].isnull[index])
[18:52:22.697] | ^
Greetings,
Andres Freund
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