Export cassandra query result to a csv file

Question

I\'m new in cassandra, and I have to export the result of a specific query to a csv file.

I found the COPY command, but (from what I understand) it allo

Answer 1

In 2020th you can use DSBulk to export or import data to/from CSV (by default), or JSON. It could be as simple as:

dsbulk unload -k keyspace -t table -u user -p password -url filename

DSBulk is heavily optimized for fast data export, without putting too much load onto the coordinator node that happens when you just run select * from table.

You can control what columns to export, and even provide your own query, etc. See following blog posts for examples:

• https://www.datastax.com/blog/2019/03/datastax-bulk-loader-introduction-and-loading
• https://www.datastax.com/blog/2019/04/datastax-bulk-loader-more-loading
• https://www.datastax.com/blog/2019/04/datastax-bulk-loader-common-settings
• https://www.datastax.com/blog/2019/06/datastax-bulk-loader-unloading
• https://www.datastax.com/blog/2019/07/datastax-bulk-loader-counting
• https://www.datastax.com/blog/2019/12/datastax-bulk-loader-examples-loading-other-locations