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class AddOsFamilyToPtable < ActiveRecord::Migration[4.2]
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def up
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add_column :ptables, :os_family, :string, :limit => 255 unless column_exists? :ptables, :os_family
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remove_column :ptables, :operatingsystem_id if column_exists? :ptables, :operatingsystem_id
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end
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def down
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remove_column :ptables, :os_family if column_exists? :ptables, :os_family
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add_column :ptables, :operatingsystem_id, :integer unless column_exists? :ptables, :operatingsystem_id
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end
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end
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