Nested query in node js using mysql

Question

I am trying following code at node js using mysql but getting error \"Cannot enqueue Query after invoking quit.

var mysql = require(\'mysql\');

var connection          


        

Answer 1

The problem is connection.end() triggered before your query is not finished yet. Try to put connection.end() to end of outer loop.

connection.query(queryString, function(err, rows, fields) {
    if (err) throw err;
    for (var i in rows) {
        console.log('Product Name: ', rows[i].product_name);
        var emp_query = 'SELECT * FROM tbl_employer';
        connection.query(queryString, function(emp_err, emp_rows, emp_fields) {
            if (emp_err) throw emp_err;
            for (var e in emp_rows) {
                console.log('Employer Name: ', emp_rows[e].company_name);
            }
        }); 
    }
    connection.end();
});

Hope it will be useful for you.