Error when using MariaDB pool

[Simon]

Hi!

Without a pool everything works fine.

If I try to use a pool:

const mariadb = require("mariadb");

const pool = mariadb.createPool({
  database: process.env.SQL_DB,
  host: process.env.SQL_HOST,
  user: process.env.SQL_USER,
  password: process.env.SQL_PASSWORD,
  connectionLimit: 10,
});

I get the following error:

text: 'Parameter at position 6 is not set',
  sql: "SELECT ?? AS data, ?? as expires FROM ?? WHERE ?? = ? - parameters:['data','expires','sessions','session_id','xD3hu_1EuRI6JOX1wMztKoLFkuK2QPse']",

Can someone help?

[ARR4NN]

I am having the same issue. Did you find a fix for this? Much appreciated

[Yasser]

Bump!

[Inanis]

Same issue, any solutions as of yet?

[Yasser]

Same issue, any solutions as of yet?

Hi the LordFarquhar,
I have not used this in a while, but eventually following code worked for us to query the database.

const mariadb = require("mariadb");

const pool = mariadb.createPool({
  host: process.env.DB_HOST,
  user: process.env.DB_USER,
  password: process.env.DB_PASSWORD,
  database: process.env.DB_NAME,
  connectionLimit: 5,
});
//Check for common errors
pool.getConnection((error, connection) => {
    if (error) {
        switch (error.code) {
            case "PROTOCOL_CONNECTION_LOST":
                console.error("DB CONNECTION LOST!");
                break;
            case "ER_CON_COUNT_ERROR":
                console.error("DB RECEIVED TOO MANY CONNECTIONS");
                break;
            case "ECONNREFUSED":
                console.error("DB HAS REFUSED CONNECTION");
                break;
            case "ER_GET_CONNECTION_TIMEOUT":
                console.error("NO CONNECTION TO DATABASE");
                console.error("MAKE SURE YOU HAVE A REACHABLE MARIADB DATABASE");
                console.error(
                    "CHECK YOUR .ENV FILE AND TEST YOUR CONNECTION WITH GIVEN CREDENTIALS"
                );
                break;
        }
    }
    if (connection) {
        connection.release();
    }
});
module.exports = pool;

Example of a class that uses queries:

const pool = require("../helpers/database");
class User {
  constructor() {
    this.pool = pool;
  }
  async getUserByEmail(email) {
    const query =
      "SELECT id,name,email,image_url FROM user_table WHERE email LIKE ?";
    return this.pool.query(query, email);
  }
}

[Charles Hill]

MariaDB is not explicitly supported by this module, but might work if your version of MariaDB is compatible with MySQL 5.7. Please try to use the latest version of this module (v3) - there were recent changes that might improve compatibility.

[Charles Hill]

I tested the latest version of this module with the latest MariaDB (10.7.8). All tests are passing - so it should be safe to use this module with MariaDB. But it's important to note that this module is not compatible with the mariadb nodejs module that was referenced above in this issue. You should follow the usage examples as shown in this module's readme here or here.