node-mysql multiple statements in one query, execute conditionally on response from each

问题

I want to execute multiple queries in one API call, but I only want to execute them conditionally based on the response of the previous one. How can I go about implementing this?

I've seen that I can do something like below to execute multiple queries.

connection.query('SELECT * ...; SELECT * ...', [1, 2], function(err, results) {
   if (err) throw err;
});

But how do I await the response of the first before conditionally executing the second?

来源：https://stackoverflow.com/questions/60230245/node-mysql-multiple-statements-in-one-query-execute-conditionally-on-response-f