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This course explores Elasticsearch, an open-source, Java-based, full-text search and analytics engine that harnesses the power of the Lucene library. You’ll discover its capabilities as a versatile search engine for business data, offering the ability to store information, conduct searches on accurate and typo-ridden text, and perform real-time data analysis on vast datasets.

Throughout this course, you will gain comprehensive insights into the architecture of Elasticsearch and master the art of indexing and storing data within the Elasticsearch framework. You will progress to learn how to execute various types of queries, including fuzzy queries, and explore the intricacies of each operation and how it is implemented within Elasticsearch.

After completing the course, you’ll have gained a comprehensive understanding of the internal mechanisms of Elasticsearch and developed the skills to effectively use it for your data management and analysis requirements.

Elasticsearch Fundamentals: Indexing and Querying Data

# Range query

A **range query** is a type of query that allows us to retrieve data within a specified range of values. It is used to filter data based on a range of values, such as numbers, dates, or strings. For example, we can perform a range query to retrieve all documents where the `price` field falls within the range of `20` to `50`.


Range queries are often used in conjunction with other types of queries, such as search queries and aggregation queries. For example, we can perform a search query to find all the documents that contain the word `"apple"` and then perform a range query to filter the results by price. This allows us to find all documents that contain the word `"apple"` and have a price between `20` and `50`.

Range queries can be very efficient because they only need to scan data within the specified range. This makes them a good choice for large datasets.





Learn about the range query and how to utilize it.

Introduction to Elasticsearch

Getting started on Elasticsearch

Text Analysis

Search on ElasticSearch

Aggregation

Conclusion

Term-Level Queries: Range Query

Range query