diff --git a/authors/PauloRC0/01.sql b/authors/PauloRC0/01.sql
new file mode 100644
index 0000000..0f84317
--- /dev/null
+++ b/authors/PauloRC0/01.sql
@@ -0,0 +1,5 @@
+--1. Liste os produtos. (products)
+SELECT 
+*
+FROM
+products
\ No newline at end of file
diff --git a/authors/PauloRC0/02.sql b/authors/PauloRC0/02.sql
new file mode 100644
index 0000000..aa5c900
--- /dev/null
+++ b/authors/PauloRC0/02.sql
@@ -0,0 +1,11 @@
+--1.Liste os produtos e o nome de seus fornecedores. (products / suppliers)
+
+SELECT
+
+p.product_name,f.company_name
+
+FROM products as p 
+
+INNER JOIN suppliers as f
+
+ON p.supplier_id = f.supplier_id
\ No newline at end of file
diff --git a/authors/PauloRC0/03.sql b/authors/PauloRC0/03.sql
new file mode 100644
index 0000000..90831bb
--- /dev/null
+++ b/authors/PauloRC0/03.sql
@@ -0,0 +1,15 @@
+--2. Recupere os pedidos com os nomes dos clientes e dos funcionários responsáveis. (orders / customers / employees)
+
+SELECT
+
+o.order_id,c.contact_name,f.first_name
+
+FROM orders as o
+
+INNER JOIN customers as c
+
+ON o.customer_id = c.customer_id
+
+INNER JOIN employees as f
+
+ON o.employee_id = f.employee_id
\ No newline at end of file
diff --git a/authors/PauloRC0/04.sql b/authors/PauloRC0/04.sql
new file mode 100644
index 0000000..1dae27d
--- /dev/null
+++ b/authors/PauloRC0/04.sql
@@ -0,0 +1,15 @@
+--3. Liste os produtos, suas categorias e o nome dos fornecedores. (products / categories / suppliers)
+
+SELECT
+
+p.product_name,c.category_name,f.company_name
+
+FROM products as p
+
+INNER JOIN categories as c
+
+ON p.category_id = c.category_id
+
+INNER JOIN suppliers as f 
+
+ON p.supplier_id = f.supplier_id
\ No newline at end of file
diff --git a/authors/PauloRC0/05.sql b/authors/PauloRC0/05.sql
new file mode 100644
index 0000000..64d6aaa
--- /dev/null
+++ b/authors/PauloRC0/05.sql
@@ -0,0 +1,13 @@
+--4. Quantos pedidos cada cliente já fez? (orders / customers)
+
+SELECT
+
+c.customer_id,COUNT(o.order_id)
+
+FROM orders as o
+
+INNER JOIN customers as c
+
+ON o.customer_id = c.customer_id
+
+GROUP BY c.customer_id
\ No newline at end of file
diff --git a/authors/PauloRC0/06.sql b/authors/PauloRC0/06.sql
new file mode 100644
index 0000000..feb4667
--- /dev/null
+++ b/authors/PauloRC0/06.sql
@@ -0,0 +1,12 @@
+-- 5. Valor total vendido por cada funcionário (considerando os pedidos já enviados). (orders / employees) 
+
+SELECT 
+
+f.first_name , SUM(o.unit_price * o.quantity * (1 - o.discount) ) AS total_vendido
+
+FROM employees f
+INNER JOIN orders p ON f.employee_id = p.employee_id
+INNER JOIN order_details o ON p.order_id = o.order_id
+WHERE p.shipped_date IS NOT NULL
+GROUP BY f.first_name
+ORDER BY total_vendido DESC;
\ No newline at end of file
diff --git a/authors/PauloRC0/07.sql b/authors/PauloRC0/07.sql
new file mode 100644
index 0000000..747618c
--- /dev/null
+++ b/authors/PauloRC0/07.sql
@@ -0,0 +1,15 @@
+--6. Média de preços dos produtos por categoria. (products / categories)
+
+SELECT 
+
+c.category_id,AVG(p.unit_price) AS media_produto
+
+FROM products as p 
+
+INNER JOIN categories as c
+
+ON c.category_id = p.category_id
+
+GROUP BY c.category_id
+
+ORDER BY media_produto ASC
\ No newline at end of file
diff --git a/authors/PauloRC0/08.sql b/authors/PauloRC0/08.sql
new file mode 100644
index 0000000..94e2689
--- /dev/null
+++ b/authors/PauloRC0/08.sql
@@ -0,0 +1,13 @@
+--7. Quais os clientes que nunca fizeram pedidos? (customers / orders)
+
+SELECT  
+
+c.customer_id,c.contact_name
+
+FROM customers as c 
+
+LEFT JOIN orders as o
+
+ON o.customer_id = c.customer_id
+
+WHERE o.order_id IS NULL
\ No newline at end of file