Elasticsearch curl API: Get CSV results with ease

Introduction

Elasticsearch is a powerful search engine that enables users to store, search, and analyze large volumes of data quickly and efficiently. One of Elasticsearch's most useful features is its RESTful API, which allows developers to interact with the search engine using HTTP requests. In this article, we'll explore how to use Elasticsearch's curl API to easily retrieve CSV results.

Using Elasticsearch's curl API to retrieve CSV results

To retrieve CSV results from Elasticsearch using curl, we first need to construct a query that specifies the data we want and the format in which we want it returned. For example, let's say we have an index called "contacts" that contains information about people, including their name, email address, and phone number. We want to retrieve a CSV file that contains the name and email address of all the people in the index.

Here's the curl command we would use to retrieve the CSV file:

curl -XPOST 'http://localhost:9200/contacts/_search?size=10000' -d '

{

  "query": {

    "match_all": {}

  },

  "stored_fields": [

    "name",

    "email"

  ],

  "docvalue_fields": [

    "name",

    "email"

  ],

  "csv": {

    "field_separator": ",",

    "quote": """

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