For many years Sequel has supported this:
>
> where(Sequel.extract(:month, :date)=>d.month, Sequel.extract(:year,
> :date)=>d.year)
>
This seems to generate the same SQL as what I posted above.
Just for convenience, here's the generated SQL:
WHERE ((extract(month FROM "date") = 3) AND (extract(year FROM "date") =
2016))"
> However, in your example you are probably better off doing:
>
> start = Date.new(d.year, d.month)
> finish = start >> 1
> where(:date=>start...finish)
>
> as that is more likely to use an index.
>
As far as I can tell, this would work as well. Here's the generated SQL:
WHERE (("date" >= '2016-03-01') AND ("date" < '2016-04-01'))"
Why does the first option not use an index, assuming one is present on the
column?
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