Promise in nodejs

select.js

const selectDate = (connection, id) => {
    return new Promise ((resolve, reject) => {
        connection.query('select * from cliente where codcliente = '+id, (err, result) => {
            if(err){
                reject(err)
            }else{
                resolve(result)
            }
        })
    }) 
}

const myfunction =  async() => {
  console.log('before')
  const data = await selectDate(connection, id)
  console.log('after date= '+data)
}