// {app_root}/config/plugin.js
exports.knex = {
  enable: true,
  package: 'egg-knex-promise',
};

// {app_root}/config/config.default.js
exports.knex = {
      client: 'sqlite3',
      connection: {
        filename: './test.db3',
      },
};

// {app_root}/controller/home.js
class HomeController extends Controller {
    async index() {
        const data = await this.app.knex('user').select('*');
        this.ctx.body = data;
    }
}