ER_NO_DB_ERROR: No database selected

Hello.

I’m using sequelize in my Express.js application and I’ve faced with strange issue/bug. I get an exception exactly after starting of application. All database credentials are correct. It seems like sync() method is called before db connection is completely initialized or something like that. The sequelize.authenticate() method works properly.

ER_NO_DB_ERROR: No database selected
Unhandled rejection SequelizeDatabaseError: ER_NO_DB_ERROR: No database selected
    at Query.formatError (/vagrant/node_modules/sequelize/lib/dialects/mysql/query.js:175:14)
    at Query._callback (/vagrant/node_modules/sequelize/lib/dialects/mysql/query.js:49:21)
    at Query.Sequence.end (/vagrant/node_modules/mysql/lib/protocol/sequences/Sequence.js:86:24)
    at Query.ErrorPacket (/vagrant/node_modules/mysql/lib/protocol/sequences/Query.js:88:8)
    at Protocol._parsePacket (/vagrant/node_modules/mysql/lib/protocol/Protocol.js:280:23)
    at Parser.write (/vagrant/node_modules/mysql/lib/protocol/Parser.js:75:12)
    at Protocol.write (/vagrant/node_modules/mysql/lib/protocol/Protocol.js:39:16)
    at Socket.<anonymous> (/vagrant/node_modules/mysql/lib/Connection.js:103:28)
    at emitOne (events.js:96:13)
    at Socket.emit (events.js:188:7)
    at readableAddChunk (_stream_readable.js:176:18)
    at Socket.Readable.push (_stream_readable.js:134:10)
    at TCP.onread (net.js:548:20)

The problem happens in these lines of code, but it may be more deeper:

models.sequelize.sync().then(function () {
    var server = http.createServer(app);
    server.listen(configs.APP_PORT);
    server.on('error', onError);
    server.on('listening', function () {
        console.log('Listening on port ' + configs.APP_PORT);
    });
}).catch(function (error) {
    onError(error);
});

Also I get the same error when I’m trying to run migrations (sequelize db:migrate). Here is my /models/index.js

var fs = require('fs');
var path = require('path');
var Sequelize = require('sequelize');
var configs = require('../../configs');
var basename = path.basename(module.filename);
var database = {};

/**
 * Inialize models connection
 */
var sequelize = new Sequelize(configs.DATABASE_NAME, configs.DATABASE_USER, configs.DATABASE_PASSWORD, {
  host: configs.DATABASE_HOST,
  port: configs.DATABASE_PORT,
  dialect: configs.DATABASE_DIALECT,
  logging: configs.APP_DEBUG
});

fs
  .readdirSync(__dirname)
  .filter(function(filename) {
    return (filename.indexOf('.') !== 0) && (filename !== basename) && (filename.slice(-3) === '.js');
  })
  .forEach(function(filename) {
    var model = sequelize['import'](path.join(__dirname, filename));
    database[model.name] = model;
  });

Object.keys(database).forEach(function(modelName) {
  if (database[modelName].associate) {
    database[modelName].associate(database);
  }
});

database.sequelize = sequelize;
database.Sequelize = Sequelize;

module.exports = database;

Dialect: MariaDB Database version: 10.0.29 Sequelize version: [Node: 6.10.0, CLI: 2.7.0, ORM: 3.30.4]

[AlpacaGoesCrazy]

I am experiencing exact same issue right now, is there any solution for this?

[mmarovich]

Update on this. It seems like my colleague needed to use the dotenv-cli, and then migrate with dotenv sequelize db:migrate etc