Pattern: Missing use of pluck(:column_name)
Issue: -
Checks for uses of select(:column_name) with map(&:column_name). These can be replaced with pluck(:column_name).
There also should be some performance improvement since it skips instantiating the model class for matches.
# bad
Model.select(:column_name).map(&:column_name)
# good
Model.pluck(:column_name)