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garyharan/height_difference.md

Created December 19, 2022 17:01
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ActiveRecord order by SQL generated value
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height_difference.md

If you want to create an extra attribute based on SQL query with ActiveRecord you can use the following:

@games = Game.select("*, ABS(#{@profile.level} - level) AS level_difference")

Then in your Ruby code you can refer to things this way:

@games.first.level_difference # => 16
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