In MySQL 5.6, they introduced a different way for logging slow queries compared to previous versions. This article will show you how to quickly, and correctly enable the slow query log which is extremely useful for debugging application performance issues. Enable Slow Query Log in MySQL 5.6 Login to your MySQL host Open the my.cnf… Read more
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Useful tips for PHP developers using MySQL
MySQL is a very common database used while developing web application. When developers are using PHP as their main programming language, they prefer MySQL as database. We are going to discuss some of uncommon but useful queries and precautions every developer should follow and will be taken care of. 1. Why not to use… Read more
Solution to SQL ERROR -532 THE RELATIONSHIP CONSTRAINT-NAME RESTRICTS THE DELETION OF ROW WITH RID X’RID-NUMBER’
This article will explain the cause and solution to DB2 SQL Error-532, which is also similar to MySQL : ERROR 1216: Cannot add or update a child row and SQL Server error: foreign key constraint failed Foreign Key Constraint Error Possible Manifestation The DELETE statement cannot be executed. The contents of the object table are… Read more
Create a compressed MySQL database dump/backup (Linux)
This may go without saying, but backing up your database regularly is important. Hard disks can fail at anytime causing you to lose all your data (We recommend using a RAID configuration when possible for data redundancy!) Often times, we may overlook the database and simply make backups of our /www or /public_html folder that… Read more
Solved! Installing mysql gem – extconf.rb failed error
Are you attempting to install the mysql gem and you are receiving this error? Fetching: mysql-2.8.1.gem (100%) Building native extensions. This could take a while... ERROR: Error installing mysql: ERROR: Failed to build gem native extension. /usr/bin/ruby1.8 extconf.rb checking for mysql_query() in -lmysqlclient... no checking for main() in -lm... yes checking for mysql_query() in -lmysqlclient… Read more
