exports.up = async (knex) => {
	await knex.raw(`
		/* allow scenes without dates to be mixed inbetween scenes with dates */
		ALTER TABLE series
		ADD COLUMN effective_date timestamptz
		GENERATED ALWAYS AS (COALESCE(date, created_at)) STORED;
	`);
};

exports.down = async (knex) => {
	await knex.schema.alterTable('series', (table) => {
		table.dropColumn('effective_date');
	});
};