A guide on installing and running Clickhouse on macOS

ClickHouse is a high-performance open-source columnar database management system developed by Yandex. Here are some of the key features of ClickHouse:

1. Columnar storage: ClickHouse uses a columnar storage format, which allows it to efficiently store and retrieve data by column, rather than by row. This results in much faster query performance, especially for analytical and aggregate queries.
2. Real-time data processing: ClickHouse is designed to handle real-time data processing and can handle billions of rows of data with sub-second query times.
3. Massively scalable: ClickHouse can scale to handle massive amounts of data and provides a number of options for horizontal scaling, including distributed table support and the ability to add and remove nodes from the cluster dynamically.
4. Support for multiple data sources: ClickHouse supports ingestion of data from a wide variety of data sources, including log files, time-series databases, and stream processing systems.
5. Advanced analytics: ClickHouse provides a number of advanced analytics features, including built-in support for machine learning algorithms, window functions, and materialized views.
6. Easy data ingestion: ClickHouse provides simple and flexible data ingestion options, including support for loading data from CSV and JSON files, as well as from external databases.
7. Efficient data compression: ClickHouse uses a number of advanced data compression techniques to reduce the size of stored data and improve query performance.
8. High availability: ClickHouse provides high availability through a number of features, including automatic failover, data replication, and the ability to quickly restore data from backups.
9. SQL compatibility: ClickHouse supports a wide variety of SQL commands and functions, making it easy for developers and data analysts to work with.
10. Open-source: ClickHouse is open-source software and is freely available for use and modification under the Apache 2.0 license.

To install and run it on macOS, below instructions can be followed.

1. Download the latest version of ClickHouse: Go to the ClickHouse website (https://clickhouse.tech/docs/en/install/) and download the macOS package.
2. Install the package: Extract the downloaded file to a directory of your choice. To start the ClickHouse server, open Terminal and navigate to the directory where you extracted the package. Then, run the following command:
3. Start the server: After the installation is complete, start the ClickHouse server by opening the Terminal and running the following command:
   

   ./clickhouse-server

   Once the server is started, you should see a message indicating that the server is listening on the default port (9000). To start the server in the background, use the --daemon option:

   ./clickhouse-server --daemon​

4. Connect to the server: To connect to the ClickHouse server, you can use the clickhouse-client.exe command-line client. To connect to the server, run the following command:
   

   ./clickhouse-client

5. Create a database: Once you are connected to the server, you can create a database by running the following command:
   

   CREATE DATABASE [database_name]

6. Verify the installation: To verify that the installation was successful, you can run a sample query to retrieve information about the databases in the server. To do this, run the following command:
   

   SHOW DATABASES​

7. If everything is working correctly, you should see a list of the databases in the server.

That's it! You have successfully installed ClickHouse on macOS. Now you can start working with your data and enjoy the benefits of this high-performance columnar database.