From fbeb802fd80f998dab6f3b870faefe3b6a6f5087 Mon Sep 17 00:00:00 2001
From: aaghafari-dev <aa.ghafari@gmail.com>
Date: Wed, 14 Jan 2026 14:57:05 +0100
Subject: [PATCH] My Homework

---
 lab-sql-basic-queries.sql | 77 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 77 insertions(+)
 create mode 100644 lab-sql-basic-queries.sql

diff --git a/lab-sql-basic-queries.sql b/lab-sql-basic-queries.sql
new file mode 100644
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+++ b/lab-sql-basic-queries.sql
@@ -0,0 +1,77 @@
+USE sakila;
+# 1- Display all available tables in the Sakila database.
+SHOW tables; 
+
+# 2-Retrieve all the data from the tables actor, film and customer.
+SELECT * FROM actor;
+SELECT * FROM film;
+SELECT * FROM customer;
+
+# 
+
+# 3-Retrieve the following columns from their respective tables:
+	# 3.1 Titles of all films from the film table
+    SELECT title
+	FROM film;
+
+    # 3.2 List of languages used in films, with the column aliased as language from the language table
+    SELECT name AS language
+    FROM language;
+
+    # 3.3 List of first names of all employees from the staff table
+    SELECT first_name
+    FROM staff;
+
+
+# 4-Retrieve unique release years.
+SELECT DISTINCT release_year
+FROM film;
+
+# 5-Counting records for database insights:
+    # 5.1 Determine the number of stores that the company has.
+    SELECT COUNT(*) AS number_of_stores
+    FROM store;
+
+    # 5.2 Determine the number of employees that the company has.
+    SELECT COUNT(*) AS number_of_employees
+    FROM staff;
+    # 5.3 Determine how many films are available for rent and how many have been rented.
+    # Available for rent (inventory items):
+    SELECT COUNT(*) AS available_for_rent
+    FROM inventory;
+    # how many have been rented:
+    SELECT COUNT(DISTINCT inventory_id) AS rented_films
+    FROM rental;
+
+    # 5.4 Determine the number of distinct last names of the actors in the database.
+    SELECT COUNT(DISTINCT last_name) AS distinct_last_names
+    FROM actor;
+
+# 6-Retrieve the 10 longest films.
+SELECT title, length
+FROM film
+ORDER BY length DESC
+LIMIT 10;
+
+# 7-Use filtering techniques in order to:
+    # 7.1 Retrieve all actors with the first name "SCARLETT".
+	SELECT *
+    FROM actor
+    WHERE first_name = 'SCARLETT';
+
+# BONUS:
+    # 7.2 Retrieve all movies that have ARMAGEDDON in their title and have a duration longer than 100 minutes.
+    # Hint: use LIKE operator. More information here.
+	SELECT title, length
+    FROM film
+    WHERE title LIKE '%ARMAGEDDON%'
+     AND length > 100;
+
+   # 7.3 Determine the number of films that include Behind the Scenes content
+	SELECT COUNT(*) AS behind_the_scenes_films
+    FROM film
+    WHERE special_features LIKE '%Behind the Scenes%';
+
+
+
+