From 43122fc4f0e5edc76e5754a6dc0dd599a7a4da9b Mon Sep 17 00:00:00 2001
From: Lewis Clark <lewisdeanclark@gmail.com>
Date: Wed, 20 Aug 2025 17:29:55 +0200
Subject: [PATCH] lab completed

---
 .DS_Store              | Bin 0 -> 6148 bytes
 LABSSQLaggandtrans.sql |  65 +++++++++++++++++++++++++++++++++++++++++
 2 files changed, 65 insertions(+)
 create mode 100644 .DS_Store
 create mode 100644 LABSSQLaggandtrans.sql

diff --git a/.DS_Store b/.DS_Store
new file mode 100644
index 0000000000000000000000000000000000000000..c3e4ead22db9ea11fc22e759cbc24d81351ce594
GIT binary patch
literal 6148
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literal 0
HcmV?d00001

diff --git a/LABSSQLaggandtrans.sql b/LABSSQLaggandtrans.sql
new file mode 100644
index 0000000..f2b6f8b
--- /dev/null
+++ b/LABSSQLaggandtrans.sql
@@ -0,0 +1,65 @@
+USE sakila;
+
+SELECT * FROM film;
+SELECT 
+    MIN(length) AS min_duration,
+    MAX(length) AS max_duration
+FROM film;
+
+SELECT 
+    FLOOR(AVG(length) / 60) AS avg_hours,
+    FLOOR(MOD(AVG(length), 60)) AS avg_minutes
+FROM film;
+
+SELECT * FROM rental;
+
+SELECT DATEDIFF
+(MAX(rental_date),
+MIN(rental_date)) AS operating_days
+FROM rental;
+
+SELECT * FROM rental;
+SELECT *, 
+       MONTH(rental_date) AS rental_month, 
+       DAYNAME(rental_date) AS rental_weekday
+FROM rental
+LIMIT 20;
+
+SELECT * FROM rental;
+SELECT *, 
+       CASE 
+		WHEN DAYNAME(rental_date) IN ('Saturday', 'Sunday') 
+		THEN 'weekend'
+		ELSE 'workday'
+        END AS DAY_TYPE
+FROM rental;
+
+SELECT * FROM film;
+
+SELECT title, IFNULL(rental_duration, 'Not Available') AS rental_duration
+	FROM film
+	ORDER By title ASC;
+    
+    
+SELECT * FROM film;
+
+SELECT COUNT(DISTINCT title) AS distinct_film
+FROM film;
+
+SELECT rating, COUNT(rating) AS film_count
+    FROM film
+    GROUP BY rating
+    ORDER BY film_count DESC;
+    
+    SELECT * FROM film;
+    
+    SELECT rating, ROUND(AVG(length), 2) AS avg_length
+    FROM film
+    GROUP BY rating 
+    ORDER BY avg_length DESC;
+    
+    SELECT rating, ROUND(AVG(length), 2) AS avg_length
+    FROM film
+    GROUP BY rating 
+    HAVING AVG(length) > 120
+    ORDER BY avg_length DESC;
\ No newline at end of file