PostgreSQL vs MySQL: Which is Best in 2025?

When it comes to choosing the right database for your project, PostgreSQL and MySQL are two of the most popular database technologies (used by 45.55% vs. 41.09% of respondents) that offer different capabilities and features. Understanding the differences between these relational database management systems can help you make an informed decision based on your specific needs and requirements.

PostgreSQL is an object-relational database that is well-suited for managing read-write operations, handling large datasets, and executing complex queries. It offers ACID compliance and is ideal for concurrent transactions. On the other hand, MySQL is preferred for managing read-only commands, making it lighter and faster for processing read-only queries.

In this article, we will delve deeper into the similarities and differences between PostgreSQL and MySQL, helping you determine which database is the best fit for your project.

What Do PostgreSQL and MySQL Share in Common?

Despite their differences, PostgreSQL and MySQL share several common features and characteristics. Let’s explore the shared qualities in detail:

Relational Database Management

PostgreSQL and MySQL are both powerful Relational Database Management Systems (RDBMS) platforms that allow users to store, organize, and manage data efficiently. They provide a structured approach to data storage and retrieval, enabling seamless handling of complex relationships between different data tables.

SQL Support

As SQL (Structured Query Language) is the standard language for interacting with relational databases, both PostgreSQL and MySQL offer robust SQL support. This enables web developers to create, modify, and retrieve data using a familiar and consistent syntax across both platforms.

SQL Standard Compliance

Both PostgreSQL and MySQL adhere to the SQL standard to a great extent. This ensures that database operations and queries are compatible and can be easily migrated between different RDBMS platforms.

Wide Community Support

Both PostgreSQL and MySQL have large and active user communities that provide valuable support, resources, and assistance to users. These communities contribute to the continuous improvement and development of the databases, offering forums, mailing lists, and online resources.

In summary, PostgreSQL and MySQL may have their unique strengths and features, but they also share several key similarities. Both databases provide reliable relational database management, support SQL queries, adhere to SQL standards, have strong user communities, and have experienced significant developments over the years. 

When to Choose MySQL Over PostgreSQL and Vice Versa?

The choice between MySQL and PostgreSQL depends on your specific project requirements. MySQL is a good choice for applications that require speed, such as read-heavy workloads. It has a reputation for being faster but may lack some advanced features supported by PostgreSQL.

If you need functional indexes or prefer a purely relational database, MySQL is a suitable option. On the other hand, if you require advanced features like object-relational database capabilities, support for a wide range of data types, or strong ACID compliance, choose PostgreSQL.

PostgreSQL User Support vs. MySQL User Support

When it comes to user support, both PostgreSQL and MySQL have thriving communities that provide assistance and resources to their users.

PostgreSQL Community

The PostgreSQL community is known for its strong and dedicated user base that actively contributes to the development and improvement of the database. Users and developers can connect through various channels, such as forums, mailing lists, and online resources. The community actively engages in discussions, shares knowledge, troubleshoots issues and offers guidance to both new and experienced users.

MySQL Community

Similarly, MySQL has a large and active user community that provides support and resources. Users can find support through forums, documentation, and community-driven websites. After Oracle bought MySQL, it began to offer paid support services and additional resources for enterprise customers seeking professional assistance.

PostgreSQL User Support	MySQL User Support
Dedicated community of users and developers	Large and active user community
Support through forums, mailing lists, and online resources	Support through forums, documentation, and community-driven websites
Engagement in discussions, knowledge sharing, and troubleshooting	Oracle’s paid support services for enterprise customers

Considering the user support available for each database is crucial when deciding which option best suits your needs. Both PostgreSQL and MySQL have strong user communities and offer valuable assistance to users.

PostgreSQL Speed vs. MySQL Speed: Which Is Faster?

When it comes to speed, MySQL has historically been known for its faster performance, especially for read-heavy workloads. However, recent versions of PostgreSQL have closed the performance gap, and the differences in speed between the two databases are negligible for most applications.

Factors such as database versions, storage engines, server configurations, and query optimization can also impact the speed of both PostgreSQL and MySQL. 

Factors	PostgreSQL	MySQL
Database versions	Wide range of versions available	Multiple versions available
Storage engines	Supports various storage engines	Also supports multiple storage engines
Server configurations	Flexible configuration options	Also offers customizable configurations
Query optimization	Advanced query optimization techniques	Includes optimization strategies

As shown in the table above, both PostgreSQL and MySQL provide options for optimizing performance based on various factors. PostgreSQL’s wide range of versions and storage engine support allows for fine-tuning the database to meet specific requirements. Similarly, MySQL offers flexibility in server configurations and query optimization to enhance its performance.

Which Programming Languages Do PostgreSQL and MySQL Support?

Both PostgreSQL and MySQL support a wide range of programming languages, making them versatile choices for different development scenarios. Here’s a breakdown of the programming languages supported by each database:

PostgreSQL:

PostgreSQL offers support for several programming languages, allowing developers to work with their preferred tools. These include:

• SQL: The standard query language for relational databases.
• PL/pgSQL: A procedural language that is similar to Oracle’s PL/SQL and offers additional capabilities for developing stored procedures and triggers.
• PL/Perl: A procedural language that allows you to use Perl code directly in your database functions.
• PL/Python: A procedural language that enables you to integrate Python code into your database routines.
• And more: PostgreSQL supports various other programming languages, such as PL/Tcl (Tcl), PL/Java (Java), and PL/R (R).

MySQL:

MySQL also provides support for multiple programming languages, making it accessible to developers who work with different tools. The supported programming languages include:

• SQL: The standard query language for relational databases.
• PHP: A popular scripting language used for web development.
• Python: A versatile programming language known for its readability and ease of use.
• Ruby: A dynamic, object-oriented programming language commonly used in web development.
• Java: A widely used programming language that powers various enterprise applications.
• And more: MySQL also supports other programming languages such as Perl, C++, and C#.

When choosing between PostgreSQL and MySQL, consider the programming languages you plan to use in your project and ensure that both databases have sufficient support for those languages. This will help you make an informed decision and facilitate a smooth development process.

What Operating Systems Do PostgreSQL and MySQL Work With?

Both PostgreSQL and MySQL are compatible with multiple operating systems. PostgreSQL is known for its compatibility with various operating systems, including Windows, Linux, macOS, and Unix-like systems. PostgreSQL can also support IP-based client access, similar to MySQL, allowing for flexible client connections.

MySQL, on the other hand, is available for a wide range of operating systems, including Windows, Linux, macOS, and Unix-based systems. It offers cross-platform compatibility to ensure easy installation and usage on different operating systems.

Choosing the right database for your project involves considering the operating system you prefer. PostgreSQL and MySQL both provide support for popular operating systems, giving you the flexibility to work with the one that aligns with your specific requirements.

Operating System	PostgreSQL Compatibility	MySQL Compatibility
Windows	Yes	Yes
Linux	Yes	Yes
macOS	Yes	Yes
Unix-like systems	Yes	Yes
IP-based client support	Yes	No

Conclusion

In conclusion, when choosing between PostgreSQL and MySQL, it’s essential to consider the specific requirements and characteristics of your project. Both databases offer unique features and capabilities that can meet various needs.

MySQL is often preferred for its speed and compatibility with different data storage engines, allowing for efficient processing of read-only queries. On the other hand, PostgreSQL shines in managing read-write operations, handling large datasets, and supporting complex queries.

Compared to MySQL, PostgreSQL’s advanced features, such as its support for diverse data types, object-relational capabilities, and strong ACID compliance, make it an ideal choice for projects that prioritize data integrity and require advanced database functionality. Meanwhile, MySQL’s compatibility and ease of use make it a popular option for applications demanding speed and scalability.  

To make an informed decision, evaluate factors such as performance, scalability, data integrity, programming language support, and the available user community. By considering these aspects, you can confidently choose the database that best aligns with your project requirements.