Re: Poor row estimates from planner, stat `most_common_elems` sometimes missing for a text[] column

On 6/5/25 23:52, Tom Lane wrote:
> The idea of treating lack of MCELEM differently from complete
> lack of stats still seems to have merit, though.


Couldn't we count / estimate the number of distinct two-by-two elements, 
and use that instead of the default selectivity estimate?