I would like to build a data table that provides features like searching, filtering, free text search and so on (if anyone has more idea please share to create modern data table). My backend has to be in NodeJS and Front end could be simple html, css. If I need to create any middleware to make the data load faster, how will that be? Any suggestion regarding this will be very much apppreciated.
P.S: I have a mysql database.
Building a dynamic data table with a Node.js backend for a MySQL database can be a challenge, but there are a few libraries that can help you get the job done.
One library that can be used is the mysqljs/mysql library. This library provides a Node.js interface for MySQL databases. It can be used to create a connection to a MySQL database, run queries, and close the connection when finished.
Another library that can be used is the node-mysql2/promise library. This library provides a Node.js interface for MySQL databases with promise support. It can be used to create a connection to a MySQL database, run queries, and close the connection when finished.
Finally, the sequelize library can be used. This library provides an easy-to-use interface for interacting with MySQL databases. It can be used to create a connection to a MySQL database, define models, and run queries.
All of these libraries can be used to build a dynamic data table with a Node.js backend for a MySQL database.
Related
I have been working on a project lately and using node as my back-end but instead of Mongodb I am using MySQL as my DBMS as I will need it in my project but I am having trouble organizing MySQL queries and can't find a good solution that helps me structure my code and files right. And another issue is that I don't know when to close my connection or if leaving it is a good practice or not.
NOTE: I already use express generator for generating my file architecture my only problem is where to place the MySQL related code and what are the best practices for a clean code.
You can create a model folder and add all your 'tables'.js there.
You can also create a DB.js file, so you can use Mysql from Nodejs and also manipulate it from the prompt:
Model Exemple
I.e of DB connection:
DB Connection
You can create tables on the way below. ID's, creating date and updated date are created automatically by Nodejs, so you don't need to worry about.
how to create a table
You also will need to download mySQL (npm install MySQL --save) and to interact with MySQL (selects, deletes,...)
Another way is create a repository.js and add SQL queries there, but is not really useful since you are using nodejs and it provides you these queries.
I'm currently building a react native application that involves sharing data between multiple clients. I already have a Web-app with a MySQL database near completion. I need to know how to use RealM with react native in order to provide offline local storage while including functionality to update the MySQL database when online.
Does anyone have any useful tips or resources on how to accomplish this?
Thank you
You essentially have two options, and you aren't going to like either one of them:
Throw away the application you've written and start over.
Don't use Realm.
Realm isn't a component which can integrate with an existing application an its database. Instead, it's a replacement for a traditional SQL database -- the expectation is that you use Realm as the primary storage for all your data. Its synchronization features depend on it having full control over how objects are stored in the database.
I am going to create a SaaS application in PHP. In that application the user can create and manage multiple tables to extend functionality. After user finish with the application he can download php code and database.
We will also provide sql import functionality so the user can create schema from (.sql) file.
I search on google but not found any proper solution. You can consider sqlfiddle functionality here.
I have 2 options in my mind but need better solution:
1) For creating multiple database and its tables, use table prefix as a solution
2) Convert mysql to sqlite. At the time of download create export as mysql (.sql) file.
It can have aprox. 10,000 users/databases. Please suggest a solution to provide each user a seperate database if any.
If shared server will not work I will purchase VPS. The main requirement is to provide each user their own database.
I am going to choose sqlite as a choice for db. After doing some benchmark sqlite seems good option for DDL and DML operation.
I will use mysql to sqlite .sql converter: https://github.com/sutara79/convert-mysql-to-sqlite
To improve the speed I follow following stackoverflow post:
Improve INSERT-per-second performance of SQLite?
I'm playing around with expressjs for a while and now the time has come to connect to a mysql database. Now i'm searching for a way to write and retrieve data from it. Normally i'm creating the database tables with MySQL Workbench. I'm using MySQL because of the ability of using ForeignKeys. Couldn't figure out yet how to do it in other database types...
Currently i'm more used to medoo for PHP. It only connected to a database and gave me the ability to access it in an object oriented way.
Is there a similar module for nodejs out there?
Try knex for a sql-builder library, it's pretty solid and looks sort of similar to medoo (but it uses Promises and is asynchronous).
Is there a way within Rails/AR to create a new mysql database at runtime?
What i recommend is to prepare standalone script readable only by specified user and execute it from rails with system command with db name as parammeter
The quick and dirty answer is:
Make sure the MySQL user your app is connecting as is allowed to create databases.
Create the database using a SQL statement:
ActiveRecord::Base.connection.execute('CREATE DATABASE IF NOT EXISTS new_database');
For simplicity's sake I'd suggest not even using ActiveRecord for this. AR is really designed to work with preconfigured databases, and even though you can create databases where you'll really run into problems is in trying to connect to and use those DBs on the fly.
You might be better off using Brian Lopez's mysql2 gem (in addition to AR for your app's main DB):
https://github.com/brianmario/mysql2
In addition to being pretty fast and modern, its API is a lot easier to work with than the raw mysql library (which is what AR uses under the hood, including connection.execute).