Hello guys I'm new in using mysql library in node js and I'm interested in possibility of inserting multiple rows at once in database. I've made a simple code which captures user registration id from database table and uses indexes of roles which that user has selected. And now I want to add user and role id into Role_User table which has user_id and role_id respectively.
Let's say I wanna do this 3 times without using loop:
Insert Into User_role VALUES (1,20);
Insert Into User_role VALUES (2,20);
Insert Into User_role VALUES (3,20);
, where numbers 1,2,3 of the first columns are role indexes.
Error I'm getting is RequestError: Incorrect syntax near '?'.
How can I make this query work?
if(req.body.roles){
var sqlQuery = `SELECT ID from Test_user Where email = @email`;
var indexiRola = findPositions(db.ROLES, req.body.roles);
request.input('role', db.sql.NChar, req.body.roles);
request.query(sqlQuery).then(
id => {
let ids = Array(req.body.roles.length).fill(id.recordset[0].ID);
console.log(ids); // [20, 20, 20]
let roleUsers = createSeperateLists(indexiRola, ids);
console.log(roleUsers); // [ [ 1, 20], [ 2, 20], [ 3, 20] ]
var insertQuery = `INSERT INTO Role_User ("role_ID", "user_id") VALUES ?`;
request.query(insertQuery, [roleUsers], function(err, result){
if(err) throw err;
console.log("Successfull insertion");
});
})
}
Check if it helps, please. I cannot check it running, of course.
It's not complete, on the contrary! request.query is async, and that code has to be revised.
At least, this code, as I hope, does not break into RequestError: Incorrect syntax near '?'.
Please:
if (req.body.roles) {
var sqlQuery = `SELECT ID from Test_user Where email = @email`;
var indexiRola = findPositions(db.ROLES, req.body.roles);
request.input('role', db.sql.NChar, req.body.roles);
request.query(sqlQuery).then(
id => {
let ids = Array(req.body.roles.length).fill(id.recordset[0].ID);
console.log(ids); // [20, 20, 20]
let roleUsers = createSeperateLists(indexiRola, ids);
console.log(roleUsers); // [ [ 1, 20], [ 2, 20], [ 3, 20] ]
// I removed the double quotes from the names and,
// VALUES (?, ?) - this is the right syntax for SQL
const insertQuery = 'INSERT INTO Role_User (role_ID, user_id) VALUES (?, ?)';
// Then, forEach roleUsers
// By the way, [roleUsers] yields an array of arrays of arrays, not cool
roleUsers.forEach(
roleUser => {
request.query(
insertQuery,
roleUser,
// Oh! Shoot!!! This is async.
// Man, you will have to deal with it.
// Please, share with us the final solution!
function(err, result) {
if (err) throw err;
console.log("Successfull insertion");
}
);
}
);
})
}