https://github.com/digoarthur/working-sakila-db
https://github.com/digoarthur/working-sakila-db
Last synced: 3 months ago
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- Host: GitHub
- URL: https://github.com/digoarthur/working-sakila-db
- Owner: DIGOARTHUR
- Created: 2023-07-12T11:51:57.000Z (about 2 years ago)
- Default Branch: main
- Last Pushed: 2023-10-14T13:01:05.000Z (almost 2 years ago)
- Last Synced: 2025-02-05T11:16:21.526Z (8 months ago)
- Size: 810 KB
- Stars: 1
- Watchers: 2
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
Awesome Lists containing this project
README
Here I will explore SQL concepts, working with the Sakila database.
# CREATE TABLE
```sql
CREATE TABLE users (
user_id INT NOT NULL AUTO_INCREMENT,
first_name VARCHAR(100),
last_name VARCHAR(100),
sallary INT,
date_of_birth DATE,
PRIMARY KEY(user_id)
)
```
# CRUD
## Create, Insert
```sql
-- CREATE, INSERT DATA
INSERT INTO users( first_name, last_name, sallary, date_of_birth)
VALUES ("Diego","Battisti", 4000, "1900-10-12")
```
## Select
```sql
-- SELECT TABLE FILM
SELECT * FROM film;
```
SET SQL_SAFE_UPDATES = 0;
- ### Select specific columns
```sql
-- SELECT COLUMNS: title description of table film
SELECT title, description FROM film;
```
- ### Select equal
```sql
-- SELECT TABLE FILM WITH LENGTH...
SELECT * FROM film
WHERE length = 126
```
## Update
```sql
-- UPDATE DATA
UPDATE staff
SET picture = 'https://files.tecnoblog.net/wp-content/uploads/2019/02/thispersondoesnotexist.jpg'
WHERE first_name = 'Mike'
```
SET SQL_SAFE_UPDATES = 0;
## Delete
```sql
-- DELETE DATA
DELETE FROM language
WHERE name = "Portuguese"
```
## Distinct
```sql
SELECT country_id, city FROM city
ORDER BY country_id
SELECT DISTINCT country_id FROM city
ORDER BY country_id
```
# AS
```sql
-- RENAME COLUMNS
SELECT title as Título, description as Descrição FROM film
--or
SELECT title as "Título do Filme", description as Descrição FROM film
```
# COMPARASION
- ## > = != <
```sql
-- GREATER-THAN SIGN
SELECT * FROM film
WHERE rental_duration > 6;
```
```sql
-- GREATER-THAN SIGN or EQUAL
SELECT * FROM film
WHERE length <= 60;
```
```sql
SELECT * FROM customer
WHERE active != 1
```
- ## OR NOT
```sql
SELECT * FROM film
WHERE rental_duration = 5 OR length>90
```
```sql
SELECT * FROM film
WHERE rental_duration = 7;
```
```sql
SELECT * FROM film
WHERE NOT rental_duration = 7;
```
```sql
SELECT * FROM rental
WHERE customer_id='239' and NOT inventory_id ='2346';
```
# IN
```sql
SELECT * FROM film
WHERE length ='30'
OR length='60'
OR length='120';
```
```sql
SELECT * FROM film
WHERE length IN (60,90,120);
```
# BETWEEN
```sql
SELECT * FROM film
WHERE length BETWEEN 50 AND 55;
```
# ORDER BY
```sql
--- ORDER BY name
SELECT * FROM category
ORDER BY name DESC;
```
```sql
SELECT * FROM film
WHERE replacement_cost BETWEEN 20 AND 25
ORDER BY replacement_cost DESC;
```
```sql
--- ORDER BY category_id
SELECT * FROM category
ORDER BY category_id DESC;
```
# LIKE
```sql
SELECT * FROM film
WHERE title LIKE("%PHOBIA%")
```
```sql
SELECT * FROM film
WHERE title LIKE("%ts%")
```
```sql
SELECT * FROM customer
WHERE first_name LIKE ("ERI%")
```
```sql
SELECT * FROM customer
WHERE last_name LIKE ("%TS")
```
# REGEXP
```sql
SELECT * FROM film
WHERE title REGEXP("^da")
```
```sql
SELECT * FROM film
WHERE title REGEXP("ra$")
```
# COUNT
```sql
SELECT COUNT(*) as "The movies with more than 7 days of rental" FROM film
WHERE rental_duration = 7;
```
# LIMIT
```sql
SELECT * FROM film
ORDER BY rental_duration
LIMIT 3;
```
# JOIN
```sql
SELECT staff.first_name, payment.*
FROM staff
JOIN payment ON staff.staff_id = payment.staff_id
```
```sql
SELECT c.first_name, c.last_name, a.address FROM customer AS c
JOIN address AS a
ON c.address_id = a.address_id
```
```sql
SELECT f.film_id, f.title, c.category_id, c.name
FROM film AS f
JOIN film_category AS fc
ON f.film_id = fc.film_id
JOIN category AS c
ON c.category_id = c.category_id
```
# USING
```sql
SELECT f.film_id, f.title, c.category_id, c.name
FROM film AS f
JOIN film_category AS fc
USING(film_id)
JOIN category AS c
USING (category_id)
```
# FUNCTIONS
## MIN and MAX
```sql
SELECT MIN(length) FROM film
SELECT MAX(length) FROM film
```
## AVG
```sql
SELECT AVG(length) FROM film
```
## SUM
```sql
SELECT SUM(length) FROM film
```
```sql
SELECT COUNT(amount), SUM(amount) FROM payment;
```
## GROUP BY
```sql
SELECT COUNT(city_id) AS number_of_cities, country FROM city
JOIN country
USING (country_id)
GROUP BY (country)
```
```sql
SELECT COUNT(film_id) AS number_of_film, name FROM film
JOIN film_category
USING (film_id)
JOIN category
USING (category_id)
GROUP BY (name)
```
# SUBQUERY
```sql
SELECT title from film
WHERE
length = (SELECT MAX(length) FROM film);
```
```sql
SELECT title, rental_duration
FROM film
WHERE
rental_duration > (SELECT AVG(rental_duration) FROM film);
```
# STORED PROCEDURE
```sql
DELIMITER //
CREATE PROCEDURE select_all_active_users()
BEGIN
SELECT * FROM customer
WHERE active = 1;
END//
DELIMITER ;
CALL select_all_active_users()
```
```sql
DELIMITER //
CREATE PROCEDURE get_movies_from_category(category_name VARCHAR(100))
BEGIN
SELECT f.title, c.name FROM film f
JOIN film_category fc
USING(film_id)
JOIN category c
USING(category_id)
WHERE c.name = category_name;
END//
DELIMITER ;
CALL get_movies_from_category("ACTION")
```
```sql
CREATE PROCEDURE get_movies_greater_than_or_equal_to_rental_duration(rental_duration INT)
BEGIN
SELECT title, rental_duration
FROM film
WHERE rental_duration >= rental_duration;
END//
DELIMITER ;
CALL get_movies_greater_than_or_equal_to_rental_duration(2)
```
# TRIGGERS
```sql
-- TRIGGERS
CREATE TRIGGER before_update_customer
BEFORE UPDATE ON customer
FOR EACH ROW
SET NEW.last_update = NOW();
UPDATE customer
SET first_name = 'JOAQUIN'
WHERE customer_id = 2;
SELECT * FROM customer;
```
# VIEWS
```sql
-- Views
CREATE VIEW film_and_category
AS
SELECT f.film_id, f.title, c.name
FROM film f
JOIN film_category fc
USING(film_id)
JOIN category c
USING(category_id);
SELECT * FROM film_and_category WHERE film_id=97
```
```sql
-- Views
CREATE VIEW customer_address
AS
SELECT c.first_name, c.last_name, a.address, ct.city
FROM customer c
JOIN address a
USING(address_id)
JOIN city ct
USING(city_id);
SELECT * FROM customer_address
```
# DROP
```sql
DROP TRIGGER before_update_customer;
```
```sql
DROP VIEW actor_info
```
```sql
DROP PROCEDURE film_in_stock()
```
# Database Design and Database Modeling
## Normal Form
### NF01
### NF03
### NF02
## Create EER Diagram
