On Tue, May 31, 2022 at 4:04 PM Tim Kelly <gtke...@dialectronics.com> wrote:
>
> c_db=>select count(id) from metadata where author like '%Kelly%';
>
>   count
> -------
>    3558
> (1 row)
>

It would be interesting to see the explain of this.  We know how many rows
it found, but not how many it thinks it will find.


> I do not see evidence that the nested loop is trying to reduce overhead
> by using the smaller set.  It seems to want to scan on data first either
> way.
>

The planner probably doesn't know which one is smaller.



> I have run vacuum analyze, in the hopes that the optimizer is
> miscalculating, to no avail.


What version are you using?

Cheers,

Jeff

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