Netflix SQL Data Analysis Project

Overview

Welcome to my Netflix SQL Data Analysis project. In this project, I've worked on 15 different problems using SQL to explore and analyze the Netflix dataset. Each query focuses on a real-world use case or business insight.

Objectives

• Analyze the distribution of content types (movies vs TV shows).
• Identify the most common ratings for movies and TV shows.
• List and analyze content based on release years, countries, and durations.
• Explore and categorize content based on specific criteria and keywords.

Dataset

The data for this project is sourced from the Kaggle dataset:

• Dataset Link: Movies Dataset

Schema

DROP TABLE IF EXISTS netflix;
CREATE TABLE netflix
(
    show_id      VARCHAR(5),
    type         VARCHAR(10),
    title        VARCHAR(250),
    director     VARCHAR(550),
    casts        VARCHAR(1050),
    country      VARCHAR(550),
    date_added   VARCHAR(55),
    release_year INT,
    rating       VARCHAR(15),
    duration     VARCHAR(15),
    listed_in    VARCHAR(250),
    description  VARCHAR(550)
);

Business Problems and Solutions

1. Count the Number of Movies vs TV Shows

SELECT 
    type,
    COUNT(*)
FROM netflix
GROUP BY 1;

Objective: Determine the distribution of content types on Netflix.

2. Find the Most Common Rating for Movies and TV Shows

SELECT
	type,
	rating
FROM
(   SELECT 
	Type,
	rating,
	COUNT(*),
	RANK() OVER(PARTITION BY type ORDER BY COUNT(*) DESC) AS Ranking
    FROM netflix
    GROUP BY 1,2
) as t1
WHERE 
	 ranking = 1

Objective: Identify the most frequently occurring rating for each type of content.

3. List All Movies Released in a Specific Year (e.g., 2020)

SELECT * 
FROM netflix
WHERE release_year = 2020;

Objective: Retrieve all movies released in a specific year.

4. Find the Top 5 Countries with the Most Content on Netflix

SELECT 
	UNNEST(STRING_TO_ARRAY(country,',')) AS new_country,
	COUNT(show_id) AS total_content
FROM netflix
GROUP BY 1
ORDER BY 2 DESC
LIMIT 5

Objective: Identify the top 5 countries with the highest number of content items.

5. Identify the Longest Movie

SELECT 
    *
FROM netflix
WHERE type = 'Movie'
ORDER BY SPLIT_PART(duration, ' ', 1)::INT DESC;

Objective: Find the movie with the longest duration.

6. Find Content Added in the Last 5 Years

SELECT *
FROM netflix
WHERE TO_DATE(date_added, 'Month DD, YYYY') >= CURRENT_DATE - INTERVAL '5 years';

Objective: Retrieve content added to Netflix in the last 5 years.

7. Find All Movies/TV Shows by Director 'Rajiv Chilaka'

SELECT *
FROM (
    SELECT 
        *,
        UNNEST(STRING_TO_ARRAY(director, ',')) AS director_name
    FROM netflix
) AS t
WHERE director_name = 'Rajiv Chilaka';

Objective: List all content directed by 'Rajiv Chilaka'.

8. List All TV Shows with More Than 5 Seasons

SELECT *
FROM netflix
WHERE type = 'TV Show'
  AND SPLIT_PART(duration, ' ', 1)::INT > 5;

Objective: Identify TV shows with more than 5 seasons.

9. Count the Number of Content Items in Each Genre

SELECT 
    UNNEST(STRING_TO_ARRAY(listed_in, ',')) AS genre,
    COUNT(*) AS total_content
FROM netflix
GROUP BY 1;

Objective: Count the number of content items in each genre.

10.Find each year and the average numbers of content release in India on netflix.

return top 5 year with highest avg content release!

SELECT 
    country,
    release_year,
    COUNT(show_id) AS total_release,
    ROUND(
        COUNT(show_id)::numeric /
        (SELECT COUNT(show_id) FROM netflix WHERE country = 'India')::numeric * 100, 2
    ) AS avg_release
FROM netflix
WHERE country = 'India'
GROUP BY country, release_year
ORDER BY avg_release DESC
LIMIT 5;

Objective: Calculate and rank years by the average number of content releases by India.

11. List All Movies that are Documentaries

SELECT * 
FROM netflix
WHERE listed_in LIKE '%Documentaries';

Objective: Retrieve all movies classified as documentaries.

12. Find All Content Without a Director

SELECT * 
FROM netflix
WHERE director IS NULL;

Objective: List content that does not have a director.

13. Find How Many Movies Actor 'Salman Khan' Appeared in the Last 10 Years

SELECT * 
FROM netflix
WHERE casts LIKE '%Salman Khan%'
  AND release_year > EXTRACT(YEAR FROM CURRENT_DATE) - 10;

Objective: Count the number of movies featuring 'Salman Khan' in the last 10 years.

14. Find the Top 10 Actors Who Have Appeared in the Highest Number of Movies Produced in India

SELECT 
    UNNEST(STRING_TO_ARRAY(casts, ',')) AS actor,
    COUNT(*)
FROM netflix
WHERE country = 'India'
GROUP BY actor
ORDER BY COUNT(*) DESC
LIMIT 10;

Objective: Identify the top 10 actors with the most appearances in Indian-produced movies.

15. Categorize Content Based on the Presence of 'Kill' and 'Violence' Keywords

SELECT 
    category,
    COUNT(*) AS content_count
FROM (
    SELECT 
        CASE 
            WHEN description ILIKE '%kill%' OR description ILIKE '%violence%' THEN 'Bad'
            ELSE 'Good'
        END AS category
    FROM netflix
) AS categorized_content
GROUP BY category;

Objective: Categorize content as 'Bad' if it contains 'kill' or 'violence' and 'Good' otherwise. Count the number of items in each category.

Author

Praveen S.
Aspiring Data Analyst | B.Sc. in

How to Run

1. Load the netflix_titles.csv dataset into your SQL environment.
2. Use the queries from Solution.sql to run the analysis.
3. Modify parameters like years, names, or keywords to customize results.

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Learnings

• Data cleaning with SPLIT_PART, UNNEST, and ILIKE

• Ranking and partitioning with RANK() OVER (PARTITION BY …)

• Text analysis within SQL

• Real-world analytics from entertainment data

Connect with Me

• LinkedIn
• GitHub Portfolio