elasticsearchHow can I export data from Elasticsearch to a CSV file?

Exporting data from Elasticsearch to a CSV file can be done using the Elasticsearch-CSV library.

The library provides a command line tool called es2csv that can be used to export data from an Elasticsearch index to a CSV file.

For example, the following command can be used to export data from the my_index index to the my_data.csv file:

es2csv -u http://localhost:9200 -i my_index -f my_data.csv

The command above will export all fields from the my_index index to the my_data.csv file. If you want to export only specific fields, you can use the -f option to specify the fields to be exported.

For example, the following command will export only the title and date fields from the my_index index to the my_data.csv file:

es2csv -u http://localhost:9200 -i my_index -f my_data.csv -f title,date

If you need to export data from multiple indices, you can use the -i option to specify the indices to be exported.

For example, the following command will export all fields from the my_index_1 and my_index_2 indices to the my_data.csv file:

es2csv -u http://localhost:9200 -i my_index_1,my_index_2 -f my_data.csv

The library also provides a Python API that can be used to export data from Elasticsearch to a CSV file programmatically.

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