On Tue, Feb 23, 2021 at 11:40 AM Lukasz <[email protected]> wrote:

> What about: Person.select(1).where(name: "Dennis").first.present?
>

!empty? is more efficient, at least if the record is large:

  DB[:persons].where(name: 'Dennis').empty?
  SELECT 1 AS one FROM persons WHERE (name = 'Dennis') LIMIT 1

Also, "present?" depends on ActiveSupport, and I would never recommend the
use of ActiveSupport unless it was necessary.  Sequel does have some
optional dependency on ActiveSupport (e.g. active_model plugin, pg_interval
extension), and it's been a source of problems over the years.  Choosing to
use ActiveSupport is in a general a poor Faustian bargain.

Thanks,
Jeremy

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