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');