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class AddIndexesToSurveyItemResponses < ActiveRecord::Migration[5.0]
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def change
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add_index :survey_item_responses, :school_id
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add_index :survey_item_responses, :survey_item_id
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add_index :survey_item_responses, :response_id
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add_index :survey_item_responses, :academic_year_id
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end
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end
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