module.exports.up = (knex) => knex.schema.createTable('card_label', (table) => {
  /* Columns */

  table
    .bigInteger('id')
    .primary()
    .defaultTo(knex.raw('next_id()'));

  table.bigInteger('card_id').notNullable();
  table.bigInteger('label_id').notNullable();

  table.timestamp('created_at', true);
  table.timestamp('updated_at', true);

  /* Indexes */

  table.unique(['card_id', 'label_id']);
  table.index('label_id');
});

module.exports.down = (knex) => knex.schema.dropTable('card_label');