My goal is to retrieve the contents of a specific table using this code snippet:
let tableName = req.body.login
connection.query('SELECT * FROM ?', tableName, (err, rows) => {
if (err) throw err
res.send(rows)
})
However, as tableName is a string, it ends up being inserted into the query with quotes, leading to an error. If this approach isn't feasible, what database structure would allow me to add users and additional data to any chosen table?
To include the table name in a raw SQL query, you simply need to reference it before calling the query method. Here's an example:
let tablename = req.body.login;
let rawQuery = 'SELECT * FROM ' + tablename;
connection.query(rawQuery, (err, rows) => {
if (err) throw err
res.send(rows)
})
I hope this explanation proves useful.
One easy solution is to utilize the power of template literals.
By using backticks `
let tablename = req.body.login
connection.query(`SELECT * FROM ${tablename}`, (err, rows) => {
if (err) throw err
res.send(rows)
})
Alternatively, you can simplify the code even further:
connection.query(`SELECT * FROM ${req.body.login}`, (err, rows) => {
if (err) throw err
res.send(rows)
})
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