class UpdateCommitLogUtf8 < ActiveRecord::Migration[5.2] def change execute("ALTER TABLE `commit_logs` MODIFY `name` varchar(255) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;") execute("ALTER TABLE `commit_logs` MODIFY `full_name` varchar(255) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;") end end