MySQL with Node js

Question

I ve just started getting into Node js  I come from a PHP background  so I m fairly used to using MySQL for all my database needs   How can I use MySQL with Node js

User · Answer

connect the mysql database by installing a library. here, picked the stable and easy to use node-mysql module.

npm install [email protected]

var http = require('http'),
   mysql = require('mysql');

var sqlInfo = {
   host: 'localhost',
   user: 'root',
   password: 'urpass',
   database: 'dbname'
}
client = mysql.createConnection(sqlInfo);

client.connect();

For NodeJS mysql connecting and querying example

User · Answer

KnexJs can be used as an SQL query builder in both Node JS and the browser  I find it easy to use  Let try it - Knex js    npm install knex --save   Then add one of the following  adding a --save  flag    npm install pg   npm install sqlite3   npm install mysql   npm install mysql2   npm install mariasql   npm install strong-oracle   npm install oracle   npm install mssql   var knex   require  knex       client   mysql     connection        host    127 0 0 1       user    your database user       password    your database password       database    myapp test            You can use it like this  knex select      from  users     or  knex  users   where     first name   Test     last name    User     select  id

User · Answer

Since this is an old thread just adding an update   To install the MySQL node js driver   If you run just npm install mysql  you need to be in the same directory that your run your server  I would advise to do it as in one of the following examples   For global installation   npm install -g mysql   For local installation   1- Add it to your package json in the dependencies    dependencies          mysql     2 3 2              2- run npm install    Note that for connections to happen you will also need to be running the mysql server  which is node independent   To install MySQL server   There are a bunch of tutorials out there that explain this  and it is a bit dependent on operative system  Just go to google and search for how to install mysql server  Ubuntu MacOSX Windows   But in a sentence  you have to go to http   www mysql com downloads  and install it

User · Answer

node-mysql is probably one of the best modules out there used for working with MySQL database which is actively maintained and well documented

User · Answer

You can skip the ORM  builders  etc  and simplify your DB SQL management using sqler and sqler-mdb   -- create this file at  db mdb setup create database sql CREATE DATABASE IF NOT EXISTS sqlermysql   const conf        univ          db            mdb              host    localhost            username   admin            password    mysqlpassword                        db          dialects            mdb    sqler-mdb              connections                      id    mdb            name    mdb            dir    db mdb            service    MySQL            dialect    mdb            pool                driverOptions                connection                  multipleStatements   true                                                create initialize manager const manager   new Manager conf   await manager init         sql file path is path to db function const result   await manager db mdb setup create database     console log  Result    result       after we re done using the manager we should close it process on  SIGINT   async function sigintDB       await manager close      console log  Manager has been closed

User · Answer

Here is production code which may help you   Package json       name    node-mysql      version    0 0 1      dependencies          express     4 10 6        mysql     2 5 4          Here is Server file   var express        require  express    var mysql          require  mysql    var app            express     var pool           mysql createPool       connectionLimit   100    important     host        localhost       user        root       password           database    address book       debug       false      function handle database req res         pool getConnection function err connection           if  err              connection release              res json   code    100   status     Error in connection database               return                        console log  connected as id     connection threadId            connection query  select   from user  function err rows               connection release                if  err                    res json rows                                                 connection on  error   function err                        res json   code    100   status     Error in connection database                   return                            app get     function req res  -         handle database req res        app listen 3000     Reference   https   codeforgeek com 2015 01 nodejs-mysql-tutorial

User · Answer

You can also try out a newer effort known as Node js DB that aims to provide a common framework for several database engines  It is built with C   so performance is guaranteed   Specifically you could use its db-mysql driver for Node js MySQL support

User · Answer

Check out the node js module list   node-mysql     A node js module implementing the MySQL protocol node-mysql2     Yet another pure JS async driver  Pipelining  prepared statements  node-mysql-libmysqlclient     MySQL asynchronous bindings based on libmysqlclient   node-mysql looks simple enough   var mysql        require  mysql    var connection   mysql createConnection     host        example org     user        bob     password    secret        connection connect function err         connected   unless  err  is set        Queries   var post     id  1  title   Hello MySQL    var query   connection query  INSERT INTO posts SET     post  function err  result         Neat      console log query sql      INSERT INTO posts SET  id    1   title     Hello MySQL

User · Answer

Imo  you should try MySQL Connector Node js which is the official Node js driver for MySQL  See ref-1 and ref-2 for detailed explanation  I have tried mysqljs mysql which is available here  but I don t find detailed documentation on classes  methods  properties of this library   So I switched to the standard MySQL Connector Node js with X DevAPI  since it is an asynchronous Promise-based client library and provides good documentation  Take a look at the following code snippet    const mysqlx   require   mysql xdevapi    const rows        mysqlx getSession  mysqlx   localhost 33060    then session   gt        const table   session getSchema  testSchema   getTable  testTable            The criteria is defined through the expression      return table update   where  name    bar    set  age   50           execute            then      gt                return table select   orderBy  name ASC                    execute row   gt  rows push row                    then      gt        console log rows

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