-- Quiero los actores que NO hayan trabajado en una película de rating 'R' -- Con subconsultas -- Cambio la pregunta a positivo: Los que Sí han trabajado en 'R' -- Con una subconsulta seleccion los que no están en esa lista select first_name, last_name from actor where actor_id not in ( select actor.actor_id from actor left join film_actor on actor.actor_id=film_actor.actor_id left join film on film_actor.film_id=film.film_id where rating='R'); -- películas que no sean de la categoría 'children' -- Cambio a positivo: Que si sean de children select title from film where film_id not in (select film.film_id from film join film_category on film.film_id=film_category.film_id join category on film_category.category_id=category.category_id where name='children'); select * from actor where actor_id not in ( select actor_id from actor join film_actor using(actor_id) join film using(film_id) join film_category using(film_id) join category using(category_id) where name='Music'); -- actores que no hayan trabajado en children (con vistas) select * from actor where actor_id not in (select actor_id from filmografia where name='children')
Autor: Juan Pablo Fuentes
Consultas crear vistas
create view customer_over_avg as SELECT first_name, last_name, COUNT(*) AS rental_count FROM rental join customer on rental.customer_id=customer.customer_id GROUP BY customer.customer_id HAVING rental_count > (SELECT AVG(rental_count) FROM rental_client); create view filmografia as select name, film.*,first_name, last_name from category join film_category on category.category_id=film_category.category_id join film on film.film_id=film_category.film_id join film_actor on film.film_id=film_actor.film_id join actor on film_actor.actor_id=actor.actor_id
Soluciones sql
insert into actor (first_name, last_name)
values ('juan','perez');
insert into actor (first_name, last_name)
values ('rosa','pi');
update actor set first_name='PEPE'
where actor_id=10;
update actor set first_name=concat('Actor',actor_id)
where actor_id>200;
delete from actor where actor_id>200;
select country, customer.* from country join city on country.country_id=city.country_id
join address on city.city_id=address.city_id
join customer on address.address_id=customer.address_id
where country like 'A%';
select country.country, customer.* from customer join address on customer.address_id=address.address_id
join city on address.city_id=city.city_id
join country on city.country_id=country.country_id
where country like 'a%';
select distinct first_name,last_name from actor join film_actor on actor.actor_id=film_actor.actor_id
join film on film_actor.film_id=film.film_id
where length>140;
select distinct name from category join film_category on category.category_id=film_category.category_id
join film on film_category.film_id=film.film_id
where rating='r';
select title, count(rental_id) total from film join inventory on film.film_id=inventory.film_id
join rental on inventory.inventory_id=rental.inventory_id
group by film.film_id
having total>20;
select country.country, customer.* from customer join address on customer.address_id=address.address_id
join city on address.city_id=city.city_id
join country on city.country_id=country.country_id
where country ='spain' or country='argentina';
select country.country, customer.* from customer join address on customer.address_id=address.address_id
join city on address.city_id=city.city_id
join country on city.country_id=country.country_id
where country in ('spain','argentina');
select title, name from category join film_category on category.category_id=film_category.category_id
join film on film_category.film_id=film.film_id
where name in ('children','family');
select first_name, last_name from actor
where first_name like '%x%' or last_name like '%x%';
select * from address where district='california' and phone like '%274%';
Ejemplos agregados
-- El total de ciudades: contar select country,count(city) total from country join city on country.country_id=city.country_id group by country; -- Total de importe de clientes select first_name, last_name, sum(amount) total, avg(amount) media, count(amount) numero, max(amount) maximo, min(amount) minimo from customer join rental on customer.customer_id=rental.customer_id join payment on rental.rental_id=payment.rental_id group by customer.customer_id; -- en la consulta anterior los clientes que han gastado más de 100 dolares select first_name, last_name, sum(amount) total, avg(amount) media, count(amount) numero, max(amount) maximo, min(amount) minimo from customer join rental on customer.customer_id=rental.customer_id join payment on rental.rental_id=payment.rental_id group by customer.customer_id having total>100; -- Los clientes cuyo nombre empieza por 'a' que han gastado más de 100 dolares select first_name, last_name, sum(amount) total, avg(amount) media, count(amount) numero, max(amount) maximo, min(amount) minimo from customer join rental on customer.customer_id=rental.customer_id join payment on rental.rental_id=payment.rental_id where first_name like 'a%' group by customer.customer_id having total>100 and media>4; -- ¿Cuantos países tienen más de 50 clientes? -- Nombre del país y número de clientes (count) select country, count(customer_id) total from country join city on country.country_id=city.country_id join address on city.city_id=address.city_id join customer on address.address_id=customer.address_id group by country.country_id having total>50
Ejemplos select
-- Para cada país sus ciudades -- join me está diciendo que relaciono las dos tablas -- on me dirá mediante que campos están relacionados select country,city from country join city on country.country_id=city.country_id; select country,city from country co join city ci on co.country_id=ci.country_id; -- Solo vale para mysql y el campo se tiene que llamar igual select country,city from country join city using(country_id); select country,city,first_name,last_name from country join city on country.country_id=city.city_id join address on city.city_id=address.city_id join customer on address.address_id=customer.address_id; select name,title from category join film_category on category.category_id=film_category.category_id join film on film_category.film_id=film.film_id; -- left join nos dice que devolvamos los valores de la tabla de la izquierda -- Aunque no tengamos valores relacionados select name,title from category left join film_category on category.category_id=film_category.category_id left join film on film_category.film_id=film.film_id; -- right join nos dice que devolvamos los valores de la tabla de la derecha -- Aunque no tengamos valores relacionados select name,title from category right join film_category on category.category_id=film_category.category_id right join film on film_category.film_id=film.film_id
Sakila esquema
Insert de revistas
INSERT INTO Revistas (Titulo, ISSN, Numero, Anyo) VALUES (‘Nature’, ‘1234-5678’, 1, 2023);
INSERT INTO Revistas (Titulo, ISSN, Numero, Anyo) VALUES (‘Science’, ‘5678-1234’, 2, 2023);
INSERT INTO Revistas (Titulo, ISSN, Numero, Anyo) VALUES (‘The New England Journal of Medicine’, ‘8765-4321’, 3, 2023);
INSERT INTO Revistas (Titulo, ISSN, Numero, Anyo) VALUES (‘The Lancet’, ‘4321-8765’, 4, 2023);
INSERT INTO Revistas (Titulo, ISSN, Numero, Anyo) VALUES (‘Cell’, ‘9876-5432’, 5, 2023);
INSERT INTO Revistas (Titulo, ISSN, Numero, Anyo) VALUES (‘Nature Reviews Immunology’, ‘5432-9876’, 6, 2023);
INSERT INTO Revistas (Titulo, ISSN, Numero, Anyo) VALUES (‘Journal of the American Medical Association’, ‘2345-6789’, 7, 2023);
INSERT INTO Revistas (Titulo, ISSN, Numero, Anyo) VALUES (‘Nature Genetics’, ‘6789-2345’, 8, 2023);
INSERT INTO Revistas (Titulo, ISSN, Numero, Anyo) VALUES (‘The Astrophysical Journal’, ‘3456-7890’, 9, 2023);
INSERT INTO Revistas (Titulo, ISSN, Numero, Anyo) VALUES (‘IEEE Transactions on Neural Networks and Learning Systems’, ‘7890-3456’, 10, 2023);
Catálogo revistas
DROP TABLE IF EXISTS `revista` ;
CREATE TABLE IF NOT EXISTS `revista` (
`idrevista` INT NOT NULL AUTO_INCREMENT,
`titulo` VARCHAR(100) NOT NULL,
`issn` CHAR(9) NOT NULL,
`numero` INT NOT NULL,
`anyo` YEAR NOT NULL,
PRIMARY KEY (`idrevista`))
ENGINE = InnoDB
DEFAULT CHARACTER SET = utf8mb4
COLLATE = utf8mb4_0900_ai_ci;
DROP TABLE IF EXISTS `articulo` ;
CREATE TABLE IF NOT EXISTS `articulo` (
`idarticulo` INT NOT NULL AUTO_INCREMENT,
`titulo` VARCHAR(100) NOT NULL,
`inicio` INT NOT NULL,
`final` INT NOT NULL,
`idrevista` INT NOT NULL,
PRIMARY KEY (`idarticulo`),
CONSTRAINT `idrevista`
FOREIGN KEY (`idrevista`)
REFERENCES `revista` (`idrevista`))
ENGINE = InnoDB
DEFAULT CHARACTER SET = utf8mb4
COLLATE = utf8mb4_0900_ai_ci;
CREATE INDEX `idrevista_idx` ON `articulo` (`idrevista` ASC) VISIBLE;
DROP TABLE IF EXISTS `autor` ;
CREATE TABLE IF NOT EXISTS `autor` (
`idautor` INT NOT NULL AUTO_INCREMENT,
`nombre` VARCHAR(100) NOT NULL,
`email` VARCHAR(100) NOT NULL,
`pais` VARCHAR(45) NOT NULL,
PRIMARY KEY (`idautor`))
ENGINE = InnoDB
DEFAULT CHARACTER SET = utf8mb4
COLLATE = utf8mb4_0900_ai_ci;
DROP TABLE IF EXISTS `articulo_autor` ;
CREATE TABLE IF NOT EXISTS `articulo_autor` (
`idarticulo_autor` INT NOT NULL AUTO_INCREMENT,
`idautor` INT NOT NULL,
`idarticulo` INT NOT NULL,
`posicion` INT NOT NULL,
PRIMARY KEY (`idarticulo_autor`),
CONSTRAINT `idarticulo`
FOREIGN KEY (`idarticulo`)
REFERENCES `articulo` (`idarticulo`),
CONSTRAINT `idautor`
FOREIGN KEY (`idautor`)
REFERENCES `autor` (`idautor`))
ENGINE = InnoDB
DEFAULT CHARACTER SET = utf8mb4
COLLATE = utf8mb4_0900_ai_ci;
CREATE INDEX `idarticulo_idx` ON `articulo_autor` (`idarticulo` ASC) VISIBLE;
CREATE INDEX `idautor_idx` ON `articulo_autor` (`idautor` ASC) VISIBLE;
Modelos ER
Solucion Solid
package com.trifulcas.juegoPPTLSID;
import java.util.Arrays;
public class JuegoColores implements ILogica{
private String[] jugadas = { "verde","azul","amarillo","naranja","rojo" };
public JuegoColores() {
}
@Override
public int comprobar(String jugada1, String jugada2) {
int pos1 = Arrays.asList(jugadas).indexOf(jugada1.toLowerCase());
int pos2 = Arrays.asList(jugadas).indexOf(jugada2.toLowerCase());
if ((pos1 + 1) % jugadas.length == pos2)
return 1;
if ((pos2 + 1) % jugadas.length == pos1)
return 2;
return 0;
}
@Override
public String[] validas() {
return this.jugadas;
}
}
package com.trifulcas.juegoPPTLSID;
public interface IMostrar {
void mostrar(String res);
}
package com.trifulcas.juegoPPTLSID;
public class Juego {
private Jugador jugador1;
private Jugador jugador2;
private ILogica _iLogica;
private IMostrar _iMostrar;
private String[] jugadas;
public String[] getJugadas() {
return jugadas;
}
public void setJugadas(String[] jugadas) {
this.jugadas = jugadas;
}
public Jugador getJugador1() {
return jugador1;
}
public void setJugador1(Jugador jugador1) {
this.jugador1 = jugador1;
}
public Jugador getJugador2() {
return jugador2;
}
public void setJugador2(Jugador jugador2) {
this.jugador2 = jugador2;
}
public Juego(Jugador jugador1, Jugador jugador2, ILogica ilogica, IMostrar imostrar) {
this.jugador1 = jugador1;
this.jugador2 = jugador2;
_iLogica = ilogica;
jugadas = _iLogica.validas();
_iMostrar = imostrar;
}
public Juego(Jugador jugador1, Jugador jugador2, ILogica ilogica) {
this(jugador1, jugador2, ilogica, new Consola());
}
public String jugar() {
jugador1.pedirJugada(jugadas);
jugador2.pedirJugada(jugadas);
_iMostrar.mostrar(jugador1.getNombre() + " elige " + jugador1.getJugada());
_iMostrar.mostrar(jugador2.getNombre() + " elige " + jugador2.getJugada());
int res = _iLogica.comprobar(jugador1.getJugada(), jugador2.getJugada());
String resultado="Empate";
if (res == 1) {
resultado= jugador1.getNombre();
}
if (res == 2) {
resultado= jugador2.getNombre();
}
_iMostrar.mostrar(resultado);
return resultado;
}
}
package com.trifulcas.juegoPPTLSID;
public class Consola implements IMostrar {
@Override
public void mostrar(String res) {
System.out.println(res);
}
}
package com.trifulcas.juegoPPTLSID;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.nio.file.StandardOpenOption;
public class Fichero implements IMostrar {
@Override
public void mostrar(String res) {
Path path = Paths.get("resultado.txt");
try {
if (!Files.exists(path))
Files.createFile(path);
Files.writeString(path, res+"\r\n", StandardOpenOption.APPEND);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}