Database Operations

There is no need to mention that speed is one of the most sought-after attributes in any database system. Optimizing MySQL for high speed is essential to ensure responsive applications and efficient data processing. There are basically two best ways to speed up UNION in MySQL – using UNION ALL and using push-down conditions. In…

When we delete or change a record from the parent table, we encounter a deadlock. It causes locks to be placed on the child’s table to prevent orphan records. As a result, we must first alter data in the child table. When the SQL Server executes a query in parallel mode, multiple threads are created….

You may already know that when the mysqldump client utility performs logical backups, it produces a set of SQL statements that you can execute to reproduce the original database object definitions and table data. Although it dumps one or more MySQL databases for backup or transfer to another SQL server, there are 5 things that…

Paging or pagination is a common requirement for almost all web applications where all the documents are divided into discrete pages. This is the easiest way to select only what you need from the database. However, optimizing paging operations is crucial to ensure efficient and fast retrieval of data in MySQL. So how do you…

Setting up replication in MySQL is something we need to do quite often. Slaves die, replication fails, or tables and data get out of sync. Whenever we build a slave, we must start with a snapshot of all the data from the master database. MySQLdump is the tried-and-true method of doing this, however it requires…