diff --git a/Lab_SQL_Queries 2.sql b/Lab_SQL_Queries 2.sql new file mode 100644 index 0000000..8f15ca4 --- /dev/null +++ b/Lab_SQL_Queries 2.sql @@ -0,0 +1,89 @@ +-- selecting first_name as scarlett in all actor list + +select * +from sakila.actor +where first_name = 'Scarlett'; + +-- selecting last_name as ‘Johansson’ in all actor list +select * +from sakila.actor +where last_name = 'Johansson'; + +-- check how many film are available for rent + +select * +from sakila.film, inventory +; + +select count(film_id) +from sakila.inventory ; + +-- 4581 film are available to be renteed + +-- Now checking how many film have been rented +-- 16044 film have been rented + +select count(rental_id) +from sakila.rental; + +-- What is the shortest and longest rental period? +-- max rental period is 7 days +-- min rental periodo is 3 days + +select min(rental_duration) +from sakila.rental,film; + +select max(rental_duration) +from sakila.rental,film; + +-- What are the shortest and longest movie duration? Name the values max_duration and min_duration. +-- min_duration = 46 \ max_duration = 185 + +select min(length) as min_duration +from sakila.rental,film; + +select max(length) as max_duration +from sakila.rental,film; + +select length +from sakila.rental,film; + +-- What's the average movie duration? +-- average duration is 115.2720 +select avg(length) as avg_duration +from sakila.rental,film; + +-- What's the average movie duration expressed in format (hours, minutes)? format is minutes + +-- How many movies longer than 3 hours? +-- 625716 film are more longer than 3 hours +select count('rental_id') +from sakila.rental,film +WHERE length > 180 ; + +select * +from sakila.rental,film +WHERE length > 180 ; + +-- Get the name and email formatted. Example: Mary SMITH - mary.smith@sakilacustomer.org. + +select lower(first_name) +from sakila.customer + +select lower(email) +from sakila.customer; + +SELECT last_name, lower(first_name),lower(email) +FROM sakila.customer; + +-- What's the length of the longest film title? +-- the length of the longest film title is 27 caracter +select * +from film, sakila.rental; + +select length(title) +from sakila.film + +select max(length(title)) +from sakila.film +