New Query Optimizer Features in MySQL 5.6
One of MySQL 5.6's many optimizations apply to the processing of queries that contain subqueries. These involve transforming a subquery into a semi-join operation, and then treating it like just...
View ArticleMySQL General Security Tips
Ease of use and speedy performance are just two of the many features that make MySQL one of the most popular databases in use today. Unfortunately, a high adoption rate makes MySQL a target for many...
View ArticleMySQL Cursors and Loops
A loop is a programming construct that executes a block of code repeatedly based on a condition. Cursors, on the other hand, are utilized to process each row returned by a SELECT statement. Read on to...
View ArticlePerform Row Operations Using MySQL Cursors
Robert Gravelle explores the use of cursors and their role in stored procedure programming.
View ArticleUsing the InnoDB Memcached Plugin with MySQL 5.6
The MySQL 5.6 memcached plugin for InnoDB uses a daemon that automatically stores and retrieves data from InnoDB tables, without the overhead of SQL. Rob Gravelle goes over some of its uses and benefits.
View ArticleThree Handy MySQL Numerical Functions
One of the tenets of Third Normal Form (3NF) database normalization is that calculations should not be stored in a table. In MySQL, calculations are made easier by a number of built-in functions. In...
View ArticleDIY Number Rounding For MySQL
Although MySQL does provide its own Round() function, for those times that it doesn't provide the results that you're looking for, you'll be happy to know that implementing your own rounding function...
View ArticleLocating Instances of a Word or Expression within a MySQL Database
Most of us have to take care of a database that we don't know like the back of our hand at some point or another. Should you have to look up a value it helps tremendously to have the capability to...
View ArticleRounding Down, Bankers Rounding, and Random Rounding in MySQL
Over time, applying the same rounding algorithm to many numbers can lead to a condition known as rounding bias. Rob Gravelle presents some rounding implementations in MySQL that attempt to eliminate...
View ArticleConverting Between Data Types in MySQL
There are a lot of occasions for converting one data type to another in MySQL. All of these can be achieved using MySQL's native CONVERT() and CAST() functions. Read on to learn how to use both.
View ArticleAssigning Roles to MySQL Users
Ever since Oracle became the owner of MySQL when it acquired Sun Microsystems in 2010, improvements to the software haven’t been as forthcoming as one might hope. There still doesn’t seem to be...
View ArticleImporting XML Data into MySQL Tables Using a Stored Procedure
In theory, it would seem that a stored procedure would be the perfect vehicle for importing XML data from a file, and yet, the LOAD XML INFILE statement cannot be run within a Stored Procedure....
View ArticleEnhance Your MySQL XML Import Procedures using Prepared Statements
In the Importing XML Data into MySQL Tables Using a Stored Procedure article, Rob Gravelle outlined some ways to work around MySQL's restrictions on stored procedures to import XML data into your MySQL...
View ArticleImporting XML, CSV, Text, and MS Excel Files into MySQL
For MySQL administrators who would rather not write and maintain their own import code, there are tools that can markedly simplify the importing of data from various sources. Rob Gravelle demonstrates...
View ArticleImporting Into MySQL from Other Databases
Importing into MySQL from databases of different types is challenging because vendors have their own proprietary tools and SQL extensions. Rob Gravelle presents some software products that can abstract...
View ArticleMySQL Numeric Overflow Gotcha
Rob Gravelle highlights a gotcha related to MySQL's overflow handling of numeric values that are outside the permissible range of the column data type.
View ArticleMySQL Goes Mobile: A Roundup of Popular MySQL Mobile Apps for iOS
Being one of the most popular databases on the planet, MySQL administration has been made a whole lot easier thanks to a number of new mobile apps. Rob Gravelle picks out some of the more promising new...
View ArticleManage your MySQL Data on the Go with Navicat Cloud and iOS
Gone are the days that a Database Administrator (DBA) spends his or her time between a desktop workstation and database server(s). Today, DBAs require tools that will allow them to perform...
View ArticleAn Overview of the MySQL Performance Schema
MySQL's Performance Schema provides a way to troubleshoot a lot of common performance issues without having to rely on specialized third-party solutions. The fact that it uses regular SQL is also a...
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