insert in for each with async await - mysql

Question

error on query execution
var records = [{name:'John',age:24},{name:'Sarah',age:28},{name:'Linda',age:23}];
connection.getSession().then(session => {
async function insertRecords() {
await Promise.all(records.map(async function (element) {
let util = {};
util['name'] = element['name'];
util['age'] = element['age'] || null;
let query = `INSERT INTO users SET
name =?,
age=?
ON DUPLICATE KEY UPDATE
name=VALUES(name),
age=VALUES(age)`;
session.sql(query).bind([util.name, util.age]).execute()
.then(() => {})
.catch((error) => {
console.error('cannot execute the query');
console.error('error', error);
});
}))
}
insertRecords()
.then(data => console.log('data', data))
.catch(err => console.log('err', err))
}).catch((err) => {
console.error(err);
session.close();
});
I am getting the following error on execution.
{ severity: 0,
code: 5015,
sqlState: 'HY000',
msg: 'Too many arguments' } }

Answer 1

In your Promise.all, you map on records but your resolver function doesn't return anything. You would need to return a promise. To do so, you should just replace your session.sql block with the following: return session.sql(query).bind([util.name, util.age]).execute().
That would return an array of Promises to Promise.all, and it would work. The error handling is already done when you call your insertRecords function so you don't need to worry about it in your resolver.