Welcome back to the MySQL optimization series! In case you haven’t been following this series, in the past couple of articles we have discussed the basics of query optimization, and told you how to optimize SELECT queries for performance as well. In this blog, we’re further learning ways to optimize INSERT operations and look at … Read more
Database and development teams often load data from plain text files into their MySQL databases. The files might be used to add lookup data, support test and development environments, populate new MySQL instances, load data from regular feeds, or in other ways support their operations. To help with the import process, MySQL provides the LOAD … Read more
In the first part of this series, we spoke about MySQL Replication, the different types, replication formats, benefits, and downsides, as well as a brief introduction to the requirements needed for setting up MySQL Replication. To ensure we stay on track with our intended topic, it’s important to have certain prerequisites in place before we … Read more
In the previous article in this series, I introduced you to how to access MySQL data from within a Python script. The article described how to use the MySQL Connector to establish a connection with a database and then retrieve data through that connection. In this article, I continue the discussion by demonstrating how to … Read more
MySQL Replication is a process where data from one MySQL database known as the source (formerly called “master”) is copied over to one or more other databases called replicas (formerly called “slaves”). Think of this like having a backup buddy that is always in sync and up to date, giving you peace of mind. It’s … Read more
Applications of all types commonly access MySQL to retrieve, add, update, or delete data. The applications might be written in Python, Java, C#, or another programming language. Most languages support multiple methods for working with a MySQL database and manipulating its data. The approach you take when accessing MySQL will depend on the programming language … Read more
Optimizing read operations is one of the most prominent problems concerning any database administrator. No matter what kind of database management system is in use – MySQL, its flavors like Percona Server or MariaDB, MongoDB, TimescaleDB, SQL Server, or others, read queries are a concern. The primary read query example is SELECT queries, but a lot of this pertains to UPDATE and DELETE as well since they too have to fetch rows to be operated on.… Read more
As with many relational database management systems, MySQL provides a variety of methods for combining data in a data manipulation language (DML) statement. You can join multiple tables in a single query or add subqueries that pull data in from other tables. You can also access views and temporary tables from within a statement, often … Read more
A subquery is a type of query that is embedded—or nested—into a data manipulation language (DML) statement. The data returned by the subquery is passed into the DML statement and incorporated into its overall logic. The subquery itself is typically a SELECT statement, although you can also use a TABLE statement or VALUES statement. Even so, the SELECT statement continues to be the most common choice for subqueries, and that’s the one I focus on in this article.… Read more
In the last few articles in this series, you learned about three important data manipulation language (DML) statements: SELECT, INSERT, and UPDATE. The statements make it possible to retrieve, add, and modify data in a MySQL database. Another DML statement that is just as important is DELETE, which lets you remove one or more rows from a table, including temporary tables. In this article, I focus exclusively on the DELETE statement to help round out our discussion on the core DML statements in MySQL. Overall, the DELETE statement is fairly basic, but one that’s no less necessary to have in your arsenal of DML tools.
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In the previous two articles in this series, you learned about SELECT and INSERT, two important data manipulation language (DML) statements in MySQL. In this article, I focus on the UPDATE statement, another valuable DML statement in MySQL.… Read more
mysqldump is one of the most popular database backup tools in the MySQL world. The tool is prevalent partly because it’s very basic and quite powerful – mysqldump database backup tool is command line-based, very simple and very straightforward to use. As far as MySQL or its flavors (MariaDB and Percona Server) are concerned, this … Read more
In the previous article in this series, I introduced you to the SELECT statement, one of several SQL statements that fall into the category of data manipulation language (DML), a subset of statements used to query and modify data. Another DML statement is the INSERT statement, which lets you add data to MySQL tables, both … Read more
There’s more to security in MySQL than user account privileges. In this article, Lukas Vileikis explains the other components of MySQL security.… Read more
There are several tools available to keep a MySQL database secure. In this article Lukas Vileikis discuses access control and user privileges.… Read more
Stored functions in MySQL return a scalar value and can be used in a SQL statement. In this article, Robert Sheldon explains how to create and use a MySQL stored function.… Read more
