node-mysql

问题 I am on server side Node.js and somehow caught up in the callbacks. I use the following function to insert Data in the Table with the mysql pkg: connection.query('INSERT INTO tableName SET ?', post, function(err, result) { if (err) { if (err.code === 'ER_DUP_ENTRY') { } else { throw err; } } }); I want to log how many duplicate entries are there without stoping the loop which calls this above function by an $.each. It says here that i have 3 possibilities: throw, callbacks and EventEmitter.

问题 I'm trying to sort out SQL statements in one query for an authentication sequence. user ╔════╦══════════════╦══════════╗ ║ id ║ emailAddress ║ password ║ ╠════╬══════════════╬══════════╣ ║ 1 ║ test1 ║ pass1 ║ ║ 2 ║ test2 ║ pass2 ║ ║ 3 ║ test3 ║ pass3 ║ ╚════╩══════════════╩══════════╝ user_token ╔═══════╦═════════╗ ║ token ║ user_id ║ ╠═══════╬═════════╣ ║ t1 ║ 1 ║ ║ t2 ║ 2 ║ ║ t3 ║ 3 ║ ╚═══════╩═════════╝ Check if record exists against and emailAddress and password If a match is found then

问题 I am attempting to use the node-mysql module which can be found here. I've used this before without any issue but on a recent project came into a strange issue of it never being able to connect to the database. I know my login credentials are correct as they work via normal MySQL command line. However, I will always receive errors when the node-mysql module attempts to connect. This is the code I have so far, with debugging enabled. var connection = mysql.createConnection({ host : 'localhost'

问题 I am getting below error every day if I left the software for more than 2 to 4 hours. { code: 'PROTOCOL_ENQUEUE_AFTER_FATAL_ERROR', fatal: false } { Error: Cannot enqueue Handshake after fatal error. at Protocol._validateEnqueue (/home/zubizi/retech_node_beta/node_modules/mysql/lib/protocol/Protocol.js:200:16) at Protocol._enqueue (/home/zubizi/retech_node_beta/node_modules/mysql/lib/protocol/Protocol.js:138:13) at Protocol.handshake (/home/zubizi/retech_node_beta/node_modules/mysql/lib

问题 How I can do this in ExpressJS? Storing the location of the images in the database using VARCHAR datatype instead of any BLOB or other binary datatype. then store that image in server harddisk in possible image space /public/images/ i am new to express . Any sample example to achieve this ? 回答1: What you can do is use the multipart middleware, which automatically streams the file uploads to the disk, and then provides a req.files object. app.use('/upload', express.multipart({ uploadDir: '

问题 I'm trying to use the node-mysql module to connect to my database. It was working fine, I updated my script (not even the connection script) and all in a sudden it can't locate the mysql module. Here's my connection script, db_connect: var mysql = require('mysql'); var connection = mysql.createConnection({ host : 'localhost', user : 'root', password : '', database : 'officeball' }); and for reference, here are the two scripts that I changed, login.js: console.log('login module initialized');

问题 I tried using sequelize and node-orm as well - but is there a way to reuse existing mysql schema? I Have a db schema defined with tables in mysql and wanted to use this with my node.js app (using express). So, I don't have to write all the define methods of defining tables again. Any help appreciated... I went through bunch of stackoverflow questions already such as: Which ORM should I use for Node.js and MySQL? Thanks, JP 回答1: Checkout bookshelf.js, it doesn't require that you define the

问题 I'm trying to setup a remote connection between my database server and a client node app using node-mysql. When I try to connect to the remote db, I get this error: node.js:201 throw e; // process.nextTick error, or 'error' event on first tick ^ Error: connect ECONNREFUSED at errnoException (net.js:646:11) at Object.afterConnect [as oncomplete] (net.js:637:18) Connecting to a local db works ok (with the socketPort parameter). I can connect to this remote db with PHP from my computer localhost

问题 I am able to open phpmyadmin with both localhost as well as my IP4 address: http://localhost/phpmyadmin http://192.168.3.72/phpmyadmin http://127.0.0.1/phpmyadmin/ All the above Works But when i try to apply IP4 address to this var mysql = require('mysql'); var connection = mysql.createConnection({ host : 'localhost', user : 'me', password : 'secret' }); Reference : https://github.com/felixge/node-mysql/#introduction I get error as : { [Error: connect ECONNREFUSED] code: 'ECONNREFUSED', errno

问题 I'm trying to put in multiple values into database using node-mysql in node. my source code engine.files.forEach(function(file) { torrentpath = file.path.replace(/&/g, "&").replace(/>/g, ">").replace(/</g, "<").replace(/"/g, """).replace(/'/g, "&apos;").replace(/\\/g, "/"); torrentFiles.push([ result.insertId, torrentpath, file.length ]); }); console.log(torrentFiles); app.mysql.query('INSERT INTO `files` (`torrentid`, `filename`, `filesize`) VALUES ?', torrentFiles, function(err, result) {