Constant score query in Elasticsearch - Mini Project: Build & Apply

Constant score query

📖 Scenario: You have a collection of products in an online store. You want to find all products in the category "electronics" and give them the same importance score, ignoring their relevance scores.

🎯 Goal: Create an Elasticsearch query using constant_score to find all products with category equal to "electronics" and assign them a fixed score of 1.5.

📋 What You'll Learn

Create a query dictionary with a constant_score key

Inside constant_score, use a filter with a term query for category equal to "electronics"

Set the boost value to 1.5

Print the final query dictionary

💡 Why This Matters

🌍 Real World

Online stores often want to find products in a category and treat them equally, ignoring text relevance scores.

💼 Career

Knowing how to write constant score queries helps in building efficient search features in e-commerce and content platforms.

1

Create the base query dictionary

Create a variable called query and set it to an empty dictionary {}.

Elasticsearch

# Create a variable called query and set it to an empty dictionary {}
# Your code here

Need a hint?

Use query = {} to start an empty query dictionary.

2

Add the constant_score key with filter and boost

Add a constant_score key to the query dictionary. Set it to a dictionary with a filter key. The filter should be a dictionary with a term key. The term key should be a dictionary with category set to "electronics". Also add a boost key with the value 1.5 inside constant_score.

Elasticsearch

query = {}
# Add constant_score with filter term category: "electronics" and boost 1.5
# Your code here

Need a hint?

Use nested dictionaries to build the constant_score query with filter and boost.

3

Wrap the constant_score inside the query key

Wrap the constant_score dictionary inside another dictionary with the key query. Assign this new dictionary back to the variable query.

Elasticsearch

query = {
    "constant_score": {
        "filter": {
            "term": {"category": "electronics"}
        },
        "boost": 1.5
    }
}
# Wrap constant_score inside query key
# Your code here

Need a hint?

Put the constant_score dictionary inside another dictionary with key 'query'.

4

Print the final query dictionary

Write a print(query) statement to display the final query dictionary.

Elasticsearch

query = {
    "query": {
        "constant_score": {
            "filter": {
                "term": {"category": "electronics"}
            },
            "boost": 1.5
        }
    }
}
# Print the query dictionary
# Your code here

Need a hint?

Use print(query) to show the final query.