Executing different batch inserting into one transaction in Nodejs - mysql

Question

I need to execute two different inserts for two different collections, one depends on the other one, so I need to execute the first one and then being able to execute the second one. My problem is I need to be able to roll back all operations if some error happens so I need to roll back both inserts if an error occurs.
I'm trying to do something like this with my two batch calls inside of the transactions but it doesn't work.
conn.beginTransaction()
.then(() => {
conn.query("INSERT INTO testTransaction values ('test')");
return conn.query("INSERT INTO testTransaction values ('test2')");
//instead of this two query I have my batch inserts
})
.then(() => {
conn.commit();
})
.catch((err) => {
conn.rollback();
})
Any example of how to do it?

Answer 1

Just if someone has the same situation and what to know how I figure this out, here is a working code:
return connectionMaria.beginTransaction()
.then(() => {
return conn.batch(insert1, values1)
.then(() => {
return conn.batch(insert2, values2)
})
.then(() => {
connectionMaria.commit();
})
.catch((error) => {
connectionMaria.rollback();
throw error;
});

Answer 2

If you have lots of promises you need to wait on, you can use Promise.all:
conn.beginTransaction()
.then(() => {
return Promise.all([
conn.query("INSERT INTO testTransaction values ('test')"),
conn.query("INSERT INTO testTransaction values ('test2')")
])
})
.then(() => {
conn.commit();
})
.catch((err) => {
conn.rollback();
})