planka/server/db/migrations/20180721021044_create_archive_table.js

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

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

    table.text('from_model').notNullable();
    table.bigInteger('original_record_id').notNullable();
    table.json('original_record').notNullable();

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

    /* Indexes */

    table.unique(['from_model', 'original_record_id']);
  });

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