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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
3rd
Average Rating
8.2
Reviews Sentiment
7.4
Number of Reviews
149
Ranking in other categories
Relational Databases Tools (5th)
 

Mindshare comparison

As of July 2025, in the Open Source Databases category, the mindshare of ClickHouse is 4.7%, up from 0.5% compared to the previous year. The mindshare of MySQL is 9.7%, down from 16.3% 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

"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."
"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."
"ClickHouse is a user-friendly solution that tries to be compatible with SQL standards."
"The tool's most valuable feature is a database. It supports portal APIs and offers good flexibility."
"It's easier to work with big data and calculations using the product."
"ClickHouse is much faster than traditional databases like MySQL and MongoDB. Its column-row searching strategy makes it very efficient. With ClickHouse, we can manage multiple databases, automatically insert data from other databases and delete data as needed. It supports real-time query performance, allowing simultaneous data insertion and retrieval. ClickHouse has improved significantly over the past two years, adding more functions and queries, as well as top functionality."
"The tool is column-based and infinitely scalable."
"It has a community version. When I have to create a new database, I have no problems with licenses."
"MySQL is an open-source product and has good community support. If you encounter any problem, you can easily ask other members of the community to help. They help you a lot. On top of being free, MySQL is a cross-platform database, meaning it can work on both Windows and Linux. It is very good for us."
"The initial setup was easy. I work in an agile way, which means coding and deploying quickly."
"​The most valuable feature of MySQL is the informative error outputs of command line interface.​"
"It is a very stable solution. I deployed the product six years ago, and it still works fine."
"It is free, which is probably its most valuable feature. It is a pretty full-featured relational database. It really does everything we need it to do."
"MySQL has cross-platform support for multiple operating systems. The backups on a Linux machine can be restored on a Windows machine, and vice versa."
"I find MySQL's relational data storage format very useful for data management. Our structure is well-defined and easy for end users and business stakeholders to read. I appreciate the tool's simplicity and ability to integrate with our backend tools."
 

Cons

"We had a lot of troubles while deploying a whole cluster."
"One issue is that you need persistent volumes. Otherwise, if one system goes down, you lose data in that cluster."
"The aggregation capability is a valuable feature. It's highly efficient, allowing us to review entire transaction histories and user activities in the market. We've tried MongoDB, Postgres, MariaDB, and BigQuery, but ClickHouse is the most cost-efficient solution for collecting data at high speeds with minimal cost. We even used ClickHouse Cloud for a month, and it proved to be a great setup, especially for startups looking to handle big data. For example, if there is a need for 2-4 terabytes of data and around 40 billion rows with reasonable computing speed and latency, ClickHouse is ideal. Regarding the real-time query performance of ClickHouse, when using an API server to query it, I achieved query results in less than twenty milliseconds in some of my experiments with one billion rows. However, it depends on the scenario since ClickHouse has limitations in handling mutations. Additionally, one of ClickHouse's strengths is its compression capability. Our experimental server has only four terabytes, and ClickHouse effectively compresses data, allowing us to store large amounts of data at high speed. This compression efficiency is a significant advantage of using ClickHouse."
"Initially, I faced challenges integrating ClickHouse, particularly with inserting data from ActiveMQ, which caused duplicates. However, after adjusting the ClickHouse settings, the issue was resolved and there were no more duplicates."
"The main issue is the lack of documentation. Many features are available but are not fully documented, which can make finding information challenging."
"ClickHouse has its own concept of database triggers and doesn't support traditional database triggers."
"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."
"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."
"MySQL lacks a feature akin to Oracle's Real Application Clusters, which ensures continuous database availability within the same data center or nearby data centers."
"In the next release, I would like to see the scalability features improved to allow you to configure it and reduce the complexity with the configuration, making it easier for the end-user to scale. Make it as simple as it can be."
"I feel that some tools which make it easier to create queries or make it easier for other functions would be really interesting to see."
"It isn't as reliable as an SQL Server."
"In terms of what I'd like to see in the next release, one thing that's always missing is dash boarding. There's no real BI tool for MySQL, like there is in Yellowfin and all the different tools that you get. They all have MySQL connectors, but there's no specific BI tool for MySQL. These open source projects have sprung up, but they're more general purpose."
"From a user perspective, the initial setup could be simplified a bit."
"The performance, stability, and security are areas with shortcomings in MySQL, where improvements are required."
"The only service which could be improved is its usability. The entire user experience needs to be revamped to meet the 2018 design standards."
 

Pricing and Cost Advice

"The tool is open-source."
"The tool is free."
"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."
"ClickHouse has an open-source version, which is free to use and has almost all the features."
"ClickHouse Cloud is not expensive compared to other databases, costing a few dollars per month while providing fast performance."
"If you have an in-house deployment on Kubernetes or something, it's going to be very cheap since you'll be managing everything."
"We used the free, community version of ClickHouse."
"There is a license needed for this solution."
"The tool is open source."
"This is an open-source product that can be used free of charge."
"It is an open source platform."
"We are using the free community version of the solution."
"MySQL is a cheap solution."
"The solution is open source so is free."
"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."
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Top Industries

By visitors reading reviews
Computer Software Company
24%
Financial Services Firm
15%
Educational Organization
10%
Manufacturing Company
9%
Computer Software Company
16%
Financial Services Firm
11%
Manufacturing Company
7%
Government
6%
 

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...
 

Comparisons

 

Overview

 

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: June 2025.
859,579 professionals have used our research since 2012.