Tips and tricks of MySQL

Tips and tricks of MySQL

MySQL is probably the best known relational database management system. As the “M” of the LAMP web development platform, this open-source solution is very popular worldwide.

However, its popularity does not mean that everyone who uses it necessarily gets the most out of MySQL. In fact, it can be a complex and tricky beast with which even experienced users can try their best to keep things running smoothly.

There are various useful MySQL tips for beginners and advanced users of the system. But first, you should take the time to remind yourself what MySQL is and what it is for…

JUST ABOUT MANAGEMENT

MySQL uses structured query language (SQL) to access and manage any database. Model-based client-server, it works on many platforms. The MySQL server processes all database instructions or commands and plays a key role in the overall system operation. A wide range of potential applications includes management and access to data from huge commercial databases. This is also important for web development, as it appears together with Linux, Apache, and PHP in the LAMP stack used to build applications and websites.

MYSQL TIPS AND TRICKS

1. Do not use MySQL as a queue

Key MySQL tips include a caution to prevent queues (or queue-like templates) from entering your applications. For example, avoid setting the status of an element so that a certain process may require it before acting with it. A typical example is to mark an email as unsent, send it, and then mark it as sent.

2. Fast reception of unique data

Imagine a database called “workers” from which you want to see unique names in the “surnames” column. Your query will look like this:

SELECT DISTINCT

surnames

FROM

ORDER BY

surnames;

To get unique combinations from more than one column in the database, your query must not change much. The following instructions will return the unique city and state combinations from the customer database:

SELECT DISTINCT

state, city

FROM

WHERE

state IS NOT NULL

ORDER BY state, city;

3. Follow the basic rules of indexing

  • Indexes allow the server to find groups of adjacent rows.
  • They allow the server to read the rows in the desired order without the server constantly wasting time sorting the rows.
  • In addition, they allow the server to satisfy all requests from the index, which means that the server does not need to access the full table.

If you keep these objectives in mind, you can ensure that indexes and queries are properly designed. This makes query execution much faster and more efficient.

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