How to copy data from cassandra to csv file?

@aniya.jaskolski 

There are several ways to copy data from Cassandra to a CSV file. One common method is to use the COPY TO command in the cqlsh shell. Here's how you can do it:

1. Open a terminal and connect to your Cassandra cluster using the cqlsh shell.
2. Run the following command to export data from a table to a CSV file:

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COPY <keyspace>.<table_name> TO 'output.csv' WITH HEADER = true;

Replace <keyspace> and <table_name> with the keyspace and table name from which you want to export the data. The WITH HEADER = true option adds column headers to the CSV file.

1. After running the command, you should see a message indicating that the data has been successfully exported to the CSV file.

Alternatively, you can also write a script or use a data migration tool to export data from Cassandra to a CSV file. There are several tools available that can help automate the process and handle larger datasets more efficiently. Some popular tools for this purpose include Apache Spark, Apache Spark Cassandra Connector, and DataStax Bulk Loader.

Whichever method you choose, make sure to verify the integrity of the exported data in the CSV file before further processing or analysis.