May 13, 2020
SQL Server vs MySQL: Overview, Similarities, Differences
SQL Server vs MySQL is a hot argument since both are the two most popular database management systems out there. In this article, we will explain what they are and how they differ so you can pick the most fitting one for your project.
RDBMS and SQL: A Short Introduction
Before we compare SQL Server vs MySQL, let’s start from the basics.
A Database Management System is a collection of programs that enable users to access, manipulate, and display the data stored within databases. It has a lot of types, with the Relational Database Management System (RDBMS) being the most well-known.
RDBMS, as its name suggests, is a system used to manage a relational database. Within it, data organization is defined as a relationship between columns and rows in a bunch of tables. Each column represents a specific attribute of data, while each row records its value. Both SQL Server and MySQL fall under this category.
Relational databases are operated, secured, optimized, and maintained using Structured Query Language (SQL). Its syntaxes are almost similar in most RDBMS software, with some variations here and there.
SQL Server vs MySQL: Overview and Similarities
Before we compare their differences, let’s start with a brief overview of our options:
What is SQL Server?
The SQL Server, also known as Microsoft SQL Server (MSSQL), has been around far longer than MySQL. SQL Server was developed by Microsoft in the 80s. Since then, it has become the go-to platform for large-scale enterprises due to its scalability and reliability.
Microsoft offers tools and services for data management and business intelligence as a part of the MSSQL. For data management, there’s SQL Server Integration Services (SSIS) and Data Quality Services, to mention a few. For data analysis, there’s SQL Server Reporting Services (SSRS) and SQL Server Analysis Services (SSAS).
What is MySQL?
Developed in the mid-90s by MySQL AB (later acquired by Oracle), MySQL was one of the first open-source database management systems and remains so to this day. While it has a lot of variants, they are not too different in terms of syntax and basic functionality.
If you wish to read more about this topic, check out this article.
Since SQL Server and MySQL are RDBMS, they share a few common features:
- Scalable and high-performing — they’re both as efficient in handling smaller-scope projects as they are for bigger ones.
- Multi-database support — users can host many databases on one server.
- Parameters — both use foreign and primary key constraints to define tabular relationships.
- Index-usage — both use indexes to optimize performance and to sort data.
However, many developers tend to specialize in one system due to the differences in their underlying architecture and certain features. We will discuss this further below.
SQL Server vs MySQL: Key Differences
Now that we’ve got an outline of what these systems are and what they do, let us look at several key differences between MySQL and SQL Server:
When it comes to SQL vs MySQL, the easiest difference between the two would be the cost. Microsoft requires users to buy licenses to access SQL Server’s full features. In contrast, MySQL falls under the General Public License (open source), which makes it completely free to use. The latter only requires you to pay for technical assistance should you need it.
SQL Server is mainly intended for developers who are using .NET as their development language, while MySQL can work with just any language, most notably PHP.
MySQL is compatible with every major operating system out there, even though it is traditionally associated with Linux. Meanwhile, SQL Server used to run exclusively on Windows, but this has changed since 2016 when Microsoft announced Linux and Mac support. However, so far you can only run the latter in a Docker container.
While both MySQL and SQL Server are based on SQL, differences in syntax are still prominent and worth keeping in mind. For instance, look at the following example:
Microsoft SQL Server
SELECT TOP 3 WITH TIES * FROM person ORDER BY age ASC
SELECT age FROM person ORDER BY age ASC LIMIT 3
Both chunks of code achieve the same result — returning three entries with the youngest age from a table named Person.
Of course, the syntax is subjective, so there’s no clear winner in this round of SQL vs MySQL. Go with whichever seems more intuitive for you. The full list of implementational changes between MySQL and SQL Server can be found here.
Another big difference between the two is the way they store data. SQL Server uses a single storage engine developed by Microsoft. In contrast, MySQL gives developers much more flexibility, as they can use different engines for different tables that are based on speed, reliability, or some other dimensions. Two of the most popular MySQL storage engines are InnoDB and MyISAM.
MySQL users, tables, and rows can be filtered in several ways. However, it requires users to run multiple queries on each database individually, as opposed to SQL Server’s database-per-database, row-based filtering. The latter streamlines the whole process so developers can filter out rows without considering the number of databases hosted on the server.
Backup and Restoration
When you back up a MySQL database, the data are extracted as SQL statements. As a result, backing up and restoring a huge amount of data can take forever due to the execution of multiple SQL statements.
Furthermore, to avoid inconsistency, MySQL will lock the database during the backup process. This lock makes your database unusable.
However, you can override this by using the mysqldump utility alongside a specific flag:
This will backup your database tables without locking them. In case you want to back up large tables, use the –quick flag as well.
Meanwhile, users of SQL Server doesn’t have to go through that situation. SQL Server won’t lock the database, so you still can use it during the backup process.
Both tools are EC2 compliant, which means they adhere to security standards designed for safe cloud computing. However, there’s a notable difference in how they restrict access to the database.
MySQL allows its database files to be edited and accessed by other processes during runtime. This, however, isn’t the case with SQL Server, as its users are required to run an instance to perform the function. It makes SQL Server less prone to hacking as the data cannot be manipulated or accessed directly.
While you can pay for MySQL support, the scenario rarely arises due to its stellar community contribution and support. Most people do not have to reach out for official assistance as they can search the web and find a ton of solutions.
On the other hand, since SQL Server is a paid service, you won’t get much community support. If you need any assistance, you can refer to its official support page.
Integrated Development Environment
It is important to note that both RDMBSs support different Integrated Development Environment (IDE) tools. These tools offer a cohesive environment for development and your choice entirely depends on your project.
The best IDE tool for MySQL is MySQL Workbench, while SQL Server Management Studio is the best option for SQL Server. Both have their pros and cons and might tip the balance if you have nothing else left to base your decision on.
In this guide, we have discussed the strengths and weaknesses of SQL Server vs MySQL.
Ultimately, the choice is yours. As a rule of thumb, if you’re developing small or medium-sized applications and predominantly use PHP, go with MySQL. On the other hand, if you’re interested in building large-scale, secure, resilient enterprise applications, SQL Server should be right up your alley.
So which one would you choose? Let us know in the comments below!