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Author: azevedontc

answers/2602.sql

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+SELECT name
+FROM customers
+WHERE state = 'RS';

answers/2603.sql

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+SELECT name, street
+FROM customers
+WHERE city = 'Porto Alegre'

answers/2604.sql

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+SELECT id, name 
+FROM products 
+WHERE price < 10 OR price > 100;

answers/2605.sql

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+SELECT products.name, providers.name
+FROM products
+JOIN providers ON products.id_providers = providers.id
+JOIN categories ON products.id_categories = categories.id
+WHERE categories.id = 6;

answers/2606.sql

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+SELECT id, name
+FROM products
+WHERE id_categories IN (
+    SELECT id 
+    FROM categories
+    WHERE name LIKE 'super%'
+);

answers/2607.sql

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+SELECT DISTINCT city FROM providers ORDER BY city;

answers/2608.sql

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+SELECT MAX(price), MIN(price) AS min_price
+FROM products;

answers/2609.sql

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+SELECT c.name, SUM(p.amount) AS sum
+FROM products p
+JOIN categories c ON p.id_categories = c.id
+GROUP BY c.name;

answers/2610.sql

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+SELECT ROUND(AVG(price), 2) AS avg_price 
+FROM products;

answers/2611.sql

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+SELECT m.id, m.name
+FROM movies m
+JOIN genres g ON m.id_genres = g.id
+WHERE g.description = 'Action'

answers/2613.sql

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+SELECT movies.id, movies.name
+FROM movies
+JOIN prices ON movies.id_prices = prices.id
+WHERE prices.value < 2.00;

answers/2614.sql

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+SELECT customers.name, rentals.rentals_date
+FROM rentals
+JOIN customers ON rentals.id_customers = customers.id
+WHERE EXTRACT(MONTH FROM rentals.rentals_date) = 9
+AND EXTRACT(YEAR FROM rentals.rentals_date) = 2016;

answers/2615.sql

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+SELECT DISTINCT city
+FROM customers

answers/2616.sql

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+SELECT customers.id, customers.name
+FROM customers
+WHERE customers.id NOT IN (SELECT id_customers FROM locations)
+ORDER BY customers.id ASC

answers/2617.sql

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+SELECT p.name, pr.name
+FROM products p
+JOIN providers pr ON p.id_providers = pr.id
+WHERE pr.name = 'Ajax SA'

answers/2618.sql

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+SELECT products.name, providers.name, categories.name
+FROM products
+JOIN providers ON products.id_providers = providers.id
+JOIN categories ON products.id_categories = categories.id
+WHERE providers.name = 'Sansul SA' AND categories.name = 'Imported';

answers/2619.sql

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+SELECT products.name, providers.name, products.price
+FROM products, providers, categories
+WHERE products.id_providers = providers.id
+AND products.id_categories = categories.id
+AND categories.name LIKE 'Super Luxury' 
+AND price > 1000;

answers/2620.sql

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+SELECT c.name,
+       o.id
+FROM customers c
+INNER JOIN orders o ON o.id_customers = c.id
+WHERE extract(YEAR FROM orders_date) = 2016  AND extract(MONTH FROM orders_date) IN (1,2,3,4,5,6)

answers/2621.sql

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+SELECT prod.name
+FROM products prod
+INNER JOIN providers prov ON prov.id = prod.id_providers
+WHERE prod.amount BETWEEN 10 AND 20
+      AND prov.name LIKE 'P%'

answers/2622.sql

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+SELECT cus.name
+FROM legal_person lp
+LEFT JOIN customers cus ON cus.id = lp.id_customers 

answers/2623.sql

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+SELECT prod.name,
+       cat.name
+FROM products prod
+INNER JOIN categories cat ON cat.id = prod.id_categories
+WHERE prod.amount > 100
+      AND prod.id_categories IN (1,2,3,6,9)

answers/2624.sql

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+SELECT count(DISTINCT city)
+FROM customers

answers/2625.sql

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+SELECT regexp_replace(np.cpf, '(\d{3})(\d{3})(\d{3})', '\1.\2.\3-')
+FROM natural_person np
+LEFT JOIN customers cus ON cus.id = np.id_customers

answers/2737.sql

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+(SELECT name, customers_number
+FROM lawyers
+ORDER BY customers_number DESC
+LIMIT 1)
+
+UNION ALL
+
+(SELECT name, customers_number
+FROM lawyers
+ORDER BY customers_number ASC
+LIMIT 1)
+
+UNION ALL
+
+(SELECT 'Average', round(AVG(customers_number), 0)
+FROM lawyers)

answers/2738.sql

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+SELECT c.name,
+       round (((s.math * 2) + (s.specific * 3) + (s.project_plan*5)) / 10, 2) AS media
+FROM candidate c
+INNER JOIN score s ON s.candidate_id = c.id
+ORDER BY media DESC

answers/2739.sql

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+SELECT NAME, Cast(extract (DAY FROM payday) AS Integer)
+FROM loan

answers/2740.sql

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+(SELECT 'Podium: ' || team FROM league ORDER BY position LIMIT 3)
+UNION ALL
+(WITH t AS (SELECT * FROM league ORDER BY position DESC LIMIT 2)
+  SELECT 'Demoted: '|| team FROM t ORDER BY position ASC);

answers/2741.sql

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+SELECT concat ('Approved:',' ', NAME), grade
+FROM students
+WHERE grade > 6
+ORDER BY grade DESC

answers/2742.sql

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+SELECT lr.name, round (lr.omega * 1.618, 3) AS n
+FROM dimensions d
+INNER JOIN life_registry lr ON lr.dimensions_id = d.id
+WHERE lr.name LIKE 'Richard%' AND d.name IN ('C875', 'C774')
+ORDER BY lr.omega ASC

answers/2743.sql

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+SELECT NAME, CHAR_LENGTH(NAME) AS tam
+FROM people
+ORDER BY tam DESC

answers/2744.sql

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+SELECT id, password, md5(password) FROM account;

answers/2745.sql

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+SELECT NAME, round (salary * 0.1, 2)
+FROM people
+WHERE salary > 3000

answers/2746.sql

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+SELECT REPLACE(name, 'H1', 'X') AS name
+FROM virus;

answers/2988.sql

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+SELECT t.name, 
+    COUNT(m.id) AS matches,
+    SUM(CASE 
+            WHEN m.team_1 = t.id AND m.team_1_goals > m.team_2_goals THEN 1 
+            WHEN m.team_2 = t.id AND m.team_2_goals > m.team_1_goals THEN 1 
+            ELSE 0 
+        END) AS victories,
+    SUM(CASE 
+            WHEN m.team_1 = t.id AND m.team_1_goals < m.team_2_goals THEN 1 
+            WHEN m.team_2 = t.id AND m.team_2_goals < m.team_1_goals THEN 1 
+            ELSE 0 
+        END) AS defeats,
+    SUM(CASE 
+            WHEN m.team_1 = t.id AND m.team_1_goals = m.team_2_goals THEN 1 
+            WHEN m.team_2 = t.id AND m.team_2_goals = m.team_1_goals THEN 1 
+            ELSE 0 
+        END) AS draws,
+    SUM(CASE 
+            WHEN m.team_1 = t.id AND m.team_1_goals > m.team_2_goals THEN 3 
+            WHEN m.team_2 = t.id AND m.team_2_goals > m.team_1_goals THEN 3 
+            WHEN m.team_1 = t.id AND m.team_1_goals = m.team_2_goals THEN 1 
+            WHEN m.team_2 = t.id AND m.team_2_goals = m.team_1_goals THEN 1 
+            ELSE 0 
+        END) AS score
+FROM teams t
+LEFT JOIN matches m ON t.id IN (m.team_1, m.team_2)
+GROUP BY t.id
+ORDER BY score DESC;

answers/2990.sql

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+SELECT emp.cpf, emp.enome, dep.dnome
+FROM empregados emp
+INNER JOIN departamentos dep ON emp.dnumero = dep.dnumero 
+LEFT JOIN trabalha t ON emp.cpf = t.cpf_emp 
+WHERE t.pnumero IS NULL 
+ORDER BY emp.cpf

answers/2993.sql

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+SELECT
+    amount AS most_frequent_value
+FROM
+    value_table
+GROUP BY
+    amount
+ORDER BY
+    (COUNT(amount)) DESC
+LIMIT 1

answers/2994.sql

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+SELECT
+    d.name,
+    SUM(ROUND(((150*a.hours)*(1+(w.bonus/100))), 1)) AS salary
+FROM
+    attendances a
+        INNER JOIN doctors d ON a.id_doctor = d.id
+        INNER JOIN work_shifts w ON a.id_work_shift = w.id
+GROUP BY
+    d.name
+ORDER BY
+    salary DESC

answers/2995.sql

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+SELECT
+    temperature,
+    COUNT(mark) AS number_of_records
+FROM
+    records
+GROUP BY
+    mark,
+    temperature
+ORDER BY
+    mark

answers/2996.sql

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+SELECT packages.year, u1.name AS sender, u2.name AS receiver
+FROM packages 
+JOIN users u1 ON packages.id_user_sender = u1.id 
+JOIN users u2 ON packages.id_user_receiver = u2.id
+WHERE (packages.year = 2015 OR packages.color LIKE 'blue')
+     AND u2.address <> 'Taiwan' ORDER BY packages.year DESC;

answers/2998.sql

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+WITH cumulative_profit AS (
+SELECT
+c.name,
+c.investment,
+o.month,
+SUM(o.profit) OVER (PARTITION BY o.client_id ORDER BY o.month) AS cumulative_profit
+FROM
+clients c
+JOIN operations o ON c.id = o.client_id
+),
+payback AS (
+SELECT
+name,
+investment,
+MIN(month) AS payback_month,
+MIN(cumulative_profit) - investment AS payback_value
+FROM
+cumulative_profit
+WHERE
+cumulative_profit >= investment
+GROUP BY
+name,
+investment
+)
+SELECT *
+FROM payback
+ORDER BY payback_value DESC;

answers/3001.sql

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+SELECT NAME,
+    CASE WHEN TYPE = 'A' then 20.0
+    WHEN TYPE = 'B' then 70.0 
+    WHEN TYPE = 'C' then 530.5
+    END AS price
+FROM products
+ORDER BY TYPE, id DESC