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Editorial Team
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Asked: 2026-06-17T21:04:03+00:00

How do I compare only time values using Rails and ActiveRecord? For instance, looking

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How do I compare only time values using Rails and ActiveRecord? For instance, looking for all rows that were created after 3:00PM?

I tried using Time.parse, however they seem to be expecting a full DateTime value, not Time (11:00 PM etc).

I’m basically looking for all rows that exist between two dates, and then between two times. For example, all rows created between “21/01/2012” and “23/02/2012” that were created after “3:00PM”. The date part seems to work fine, however I don’t seem to be able to get the time part working without plain SQL.

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1 Answer

  1. Editorial Team

    From what I understand you’re applying a function to extract time from a datetime attribute in your SQL. Something like select HOUR(created_at)…

    ActiveRecord can’t do that, however the gem squeel does it in Ruby.

    Person.select{coalesce(name, '<no name given>')}

    But there’s nothing fundamentely different than doing it in plain SQL.

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