Range query in Elasticsearch - Mini Project: Build & Apply

Range query

📖 Scenario: You have a collection of products in an online store. Each product has a price. You want to find products within a certain price range.

🎯 Goal: Build an Elasticsearch range query to find products priced between 50 and 150.

📋 What You'll Learn

Create an Elasticsearch index mapping with a price field of type float.

Add a configuration variable for the price range minimum and maximum.

Write a range query using the range keyword with gte and lte for the price field.

Print the final query JSON.

💡 Why This Matters

🌍 Real World

Range queries are used in search engines to filter results by numbers like price, date, or ratings.

💼 Career

Knowing how to write range queries is important for roles involving search, data filtering, and Elasticsearch administration.

1

Create index mapping with price field

Create a variable called index_mapping and assign it a JSON object with a mappings key. Inside mappings, add properties with a price field of type float.

Elasticsearch

# Create the index mapping with price field
# Your code here

Need a hint?

Use a dictionary with keys mappings and properties. Set price type to float.

2

Set price range variables

Create two variables called min_price and max_price and set them to 50 and 150 respectively.

Elasticsearch

index_mapping = {
    "mappings": {
        "properties": {
            "price": {"type": "float"}
        }
    }
}
# Set min_price and max_price variables
# Your code here

Need a hint?

Assign 50 to min_price and 150 to max_price.

3

Create the range query

Create a variable called range_query and assign it a JSON object with a query key. Inside query, use range on the price field with gte set to min_price and lte set to max_price.

Elasticsearch

index_mapping = {
    "mappings": {
        "properties": {
            "price": {"type": "float"}
        }
    }
}
min_price = 50
max_price = 150
# Create the range query using min_price and max_price
# Your code here

Need a hint?

Use the range keyword inside query with gte and lte set to the variables.

4

Print the range query

Write a print statement to display the range_query variable.

Elasticsearch

index_mapping = {
    "mappings": {
        "properties": {
            "price": {"type": "float"}
        }
    }
}
min_price = 50
max_price = 150
range_query = {
    "query": {
        "range": {
            "price": {
                "gte": min_price,
                "lte": max_price
            }
        }
    }
}
# Print the range_query variable
# Your code here

Need a hint?

Use print(range_query) to show the query.