Simple Answer: You will never use a index this way. Lets look at the following examples: EXPLAIN SELECT * FROM `wp_posts`; +—-+————-+———...
ORM Package for Node.js. Works with MySQL, PostgreSQL and SQLite. var orm = require('orm'); orm.connect("mysql://username:password@host/database", function (err, db) { if (err) throw err; var Person = db.define('person', { name : String, surname :...
The SELECT statement is used to select or fetch data from a your MySQL Database. It’s the most common type of query issued to a database. There are many ways to query a database, but were going to focus on the SELECT statement...
If you have deleted a large part of your table or updated many variable length rows, you should consider running the optimize command. If you want to quickly generate the optimize commands for every table in you database, executing the...
This list is the PHP version »SQL to Mongo correspondence table (there is a more general version in the official MongoDB manual). SQL queryMongo query statementCREATE TABLE USERS (a Number, b Number)Implicit creation...
Put it in a daily cronjob if you like, or extend it to copy the backup to another machine:
InnoDB by default stores all data in one large file, typically referred to as the InnoDB tablespace. Without customisation, A file named ibdata1 at the root of your MySQL data directory will contain all your data and indexes. One problem that has...
When looking at MySQL output, it is sometimes more convenient to split up the number of records returned into separate pages and include hyperlinks to further pages in the result set, a layout often referred to as pagination. The following is an...
Sometimes simplicity is also convenient, and in the case of authentication on the most popular web server, Apache, .htpasswd fits the bill You may opt for a PHP/MySQL login which in itself is simple enough, but requires the availability of MySQL. If...
Here is a SQL stored procedure (sp_Now) that determines what processes are currently executing and consuming resources on a database server. It’s helpful in troubleshooting sporadic performance problems, especially in an environment where...