const knexDb = knex({ client: 'pg', connection: {
    host : '127.0.0.1',
    user : process.env.DB_USER,
    password : process.env.DB_PASSWORD,
    database : process.env.DB_DATABASE,
    port: process.env.DB_PORT
  }});

arrayWith5ThousandObj.map(data => {
    knexDb('users').where({
      user: data.user,
    })
    .update({
      product: data.product
    })
    .catch(err => console.error('update user products', err))
})