On Mon, Feb 1, 2021 at 7:19 PM Guillaume Lelarge <guilla...@lelarge.info>
wrote:

>
>
> You're doing a left join, so I guess there's no row where
> call_records.timestamp::date = 2020-08-30. That would result with a NULL id.
>
>
Thanks for the excellent analysis everyone. I appreciate it!

Here is the documentation (for anyone reading the mailing list in the
future...)

count(*)   bigint number of input rows
count(expression) any bigint number of input rows for which the value of
expression is not null

Have a great night (or equivalent for your TZ).

-m

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