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# frozen_string_literal: true
class DropUnusedFieldsFromMergeRequestReviewers < Gitlab::Database::Migration[2.0]
disable_ddl_transaction!
def up
with_lock_retries do
if column_exists?(:merge_request_reviewers, :updated_state_by_user_id)
remove_column :merge_request_reviewers, :updated_state_by_user_id
end
end
end
def down
with_lock_retries do
unless column_exists?(:merge_request_reviewers, :updated_state_by_user_id)
add_column :merge_request_reviewers, :updated_state_by_user_id, :bigint
end
end
add_concurrent_index :merge_request_reviewers, :updated_state_by_user_id,
name: 'index_on_merge_request_reviewers_updated_state_by_user_id'
add_concurrent_foreign_key :merge_request_reviewers, :users, column: :updated_state_by_user_id, on_delete: :nullify
end
end
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