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ClickHouse vs MySQL comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on Jan 23, 2025

Review summaries and opinions

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:
 

Categories and Ranking

ClickHouse
Ranking in Open Source Databases
6th
Average Rating
8.8
Reviews Sentiment
7.8
Number of Reviews
11
Ranking in other categories
Vector Databases (11th)
MySQL
Ranking in Open Source Databases
2nd
Average Rating
8.2
Reviews Sentiment
7.4
Number of Reviews
149
Ranking in other categories
Relational Databases Tools (5th)
 

Mindshare comparison

As of August 2025, in the Open Source Databases category, the mindshare of ClickHouse is 5.1%, up from 0.7% compared to the previous year. The mindshare of MySQL is 9.4%, down from 15.7% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Open Source Databases
 

Featured Reviews

Aswini Atibudhi - PeerSpot reviewer
Provides real-time data insights with high flexibility and responsive support
The basic challenge for ClickHouse is the documentation, which isn't ideal, but it's mature and stable with more columnar storage, compression, and parallel processing, making it the best for OLAP. In terms of improvements, it's not designed for very frequent small writes, making it less scalable in write-intensive workloads, and it's not flourishing in transactional use cases or when ingesting streaming data, such as batching or buffering, which is something ClickHouse will improve.
Muzzamil  Hussain - PeerSpot reviewer
Native encryption ensures secure data management with a simple deployment
The most valuable feature is the on-premises data encryption facilities. By default, we can provide encryption, and this feature in MySQL is why we prefer it over other databases. The native encryption in MySQL encourages us to use this database model more frequently compared to Oracle and other databases. With Oracle, we have to buy another solution for encryption and masking, but MySQL supports native encryption, which enhances our return on investment. It perfectly supports our ROI, and we have no issues with its functionality.

Quotes from Members

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:
 

Pros

"The tool is column-based and infinitely scalable."
"If you have a real-time basis, you should take a look at ClickHouse because it works on a vector database, and the querying is super fast compared to traditional databases."
"We faced a challenge with deploying ClickHouse onto Kubernetes. Recently, we've been using ClickHouse Cloud, and the main issue is the high cost of the cloud service. The pricing isn't very competitive, especially for startups. I would instead buy a server and self-host if I have enough disk space. Besides that, ClickHouse has done very well, with clear goals and effective execution."
"ClickHouse is a user-friendly solution that tries to be compatible with SQL standards."
"The best thing about the tool is that I can set it up on my computer and run queries without depending on the cloud. This is why I use it every day."
"The tool's most valuable feature is a database. It supports portal APIs and offers good flexibility."
"ClickHouse is open source with no vendor lock-in, providing excellent freedom to choose any vendor without restrictions."
"The main feature of ClickHouse is the optimizer because we had too many records to deduplicate, and the optimizer took this task by itself."
"The solution has been very easy to scale so far."
"MySQL is an easy-to-use solution that provides stability, reliability, flexibility, performance, security, and high availability."
"My main reason for using MySQL for this small customer database company and for some kinds of scientific projects was that I had to do the installation myself. I didn't have a database administration team behind me. Therefore, I was looking for something very easy to handle. MySQL is easy to install, connect, and do all such things."
"One of the best features is this solution is easy to use."
"What I've been most pleased with is the cost point, performance, and ease of use."
"It was easy to install."
"I like MySQL because of its community."
"The way that MySQL has improved my organization is that it comes free and also works fine on the technical side."
 

Cons

"ClickHouse has its own concept of database triggers and doesn't support traditional database triggers."
"There aren't too many improvements I'd suggest for ClickHouse as it covers all my needs. There are just a few technical issues. For example, sometimes, when you want to get unique values and use certain tables, they don't work as expected. But it's not a major problem."
"There are some areas where ClickHouse could improve. Specifically, we encountered incompatibilities with its SQL syntax when migrating queries from MySQL or SQL to ClickHouse. This difference in details made it challenging to figure out the exact issues. Additionally, we faced difficulties due to the lack of a proper Django driver for ClickHouse, unlike MySQL, which Django supports out of the box."
"I would like ClickHouse to work more on integration with third-party tools."
"We had a lot of troubles while deploying a whole cluster."
"In terms of improvements, it's not designed for very frequent small writes, making it less scalable in write-intensive workloads, and it's not flourishing in transactional use cases or when ingesting streaming data, such as batching or buffering, which is something ClickHouse will improve."
"If you join our team, it should be easy for you to use ClickHouse, especially if you are a developer. However, you need to read the documentation and understand the problems you are trying to solve."
"One issue is that you need persistent volumes. Otherwise, if one system goes down, you lose data in that cluster."
"As for areas that could be improved, the tool is often used as a local database on laptops. But now, we're moving to cloud-based solutions that are more scalable and highly available. I think the tool should offer a cloud database option. This would let users keep a local copy of data if needed, but also have their data available across different regions through a cloud account."
"In MySQL, we need to define every table beforehand."
"Improvements to MySQL depend on the specific use case. For example, in my scenario, I frequently need to maintain and store data, which can then be utilized to generate reports. On the other hand, others may suggest incorporating a feature that allows for easier visualization of the data, such as what is available in Power BI or other similar tools."
"I would like to see more integrations of the solution with other platforms and improve the support on different data types."
"Security is a concern. MySQL could have better security features."
"The availability of tools could be improved in the MySQL open-source platform. They can provide more analytical tools. I haven't had any particularly difficult issues to troubleshoot on MySQL, but in the past, on Microsoft SQL Server, I had to troubleshoot some difficult issues, and better tools were in place to see what was going on in real-time on the server. So, that's the bit that is lacking on the MySQL open-source platform."
"From a user perspective, the initial setup could be simplified a bit."
"The solution could be more secure."
 

Pricing and Cost Advice

"ClickHouse Cloud is not expensive compared to other databases, costing a few dollars per month while providing fast performance."
"The tool is open-source."
"For pricing, if you use the self-hosted version, it would be free. Cloud services pricing would be an eight out of ten. I try to minimize costs but still have to monitor usage."
"We used the free, community version of ClickHouse."
"If you have an in-house deployment on Kubernetes or something, it's going to be very cheap since you'll be managing everything."
"ClickHouse has an open-source version, which is free to use and has almost all the features."
"The tool is free."
"MySQL is very cheap. It could be free. It also has a yearly licensing option."
"MySQL is released under an open-source license, so you have nothing to pay to use it."
"MySQL is cheaper than Microsoft SQL Server."
"There is a licensing cost because we are going for a proprietary product. There are some other versions for which there is no licensing cost."
"There is a license needed for this solution."
"I use the open-source free community version."
"MySQL is a free and open-source solution."
"It is open source. We prefer it for POCs because it saves the license cost."
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Top Industries

By visitors reading reviews
Computer Software Company
22%
Financial Services Firm
17%
Educational Organization
10%
Manufacturing Company
9%
Computer Software Company
15%
Financial Services Firm
11%
Manufacturing Company
7%
Government
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
 

Questions from the Community

What is your experience regarding pricing and costs for ClickHouse?
ClickHouse is open source without direct fees, unlike other databases that have hidden fees or restrict hosting to their platforms. The open-source nature of ClickHouse allows for complete flexibil...
What needs improvement with ClickHouse?
The basic challenge for ClickHouse is the documentation, which isn't ideal, but it's mature and stable with more columnar storage, compression, and parallel processing, making it the best for OLAP....
What is your primary use case for ClickHouse?
I have experience in ClickHouse ( /products/clickhouse-reviews ), and we also use Apache Druid ( /products/druid-reviews ), which has corporate support from Druid ( /products/druid-reviews ), along...
Why are MySQL connections encrypted and what is the biggest benefit of this?
MySQL encrypts connections to protect your data and the biggest benefit from this is that nobody can corrupt it. If you move information over a network without encryption, you are endangering it, m...
Considering that there is a free version of MySQL, would you invest in one of the paid editions?
I may be considered a MySQL veteran since I have been using it since before Oracle bought it and created paid versions. So back in my day, it was all free, it was open-source and the best among sim...
What is one thing you would improve with MySQL?
One thing I would improve related to MySQL is not within the product itself, but with the guides to it. Before, when it was free, everyone was on their own, seeking tutorials and how-to videos onli...
 

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Sample Customers

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Facebook, Tumblr, Scholastic, MTV Networks, Wikipedia, Verizon Wireless, Sage Group, Glassfish Open Message Queue, and RightNow Technologies.
Find out what your peers are saying about ClickHouse vs. MySQL and other solutions. Updated: July 2025.
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