digitalm/file0.txt

Last active April 6, 2018 01:47

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ActiveRecord::Migration で string のカラムをデータごと integer に変換する ref: https://qiita.com/digitalm/items/919908bdb152c3a068e9

Raw

	def up
	change_column :reports, :file_size, 'integer USING CAST(file_size AS integer)'
	end

	def down
	change_column :reports, :file_size, :string
	end

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