Re: [PATCH] Add extra statistics to explain for Nested Loop

Le ven. 16 oct. 2020 à 16:12, Pavel Stehule <pavel.stehule@gmail.com> a
écrit :

>
>
> pá 16. 10. 2020 v 9:43 odesílatel <e.sokolova@postgrespro.ru> napsal:
>
>> Hi, hackers.
>> For some distributions of data in tables, different loops in nested loop
>> joins can take different time and process different amounts of entries.
>> It makes average statistics returned by explain analyze not very useful
>> for DBA.
>> To fix it, here is the patch that add printing of min and max statistics
>> for time and rows across all loops in Nested Loop to EXPLAIN ANALYSE.
>> Please don't hesitate to share any thoughts on this topic!
>>
>
> +1
>
> This is great feature - sometimes it can be pretty messy current limited
> format
>

+1, this can be very handy!

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