my_solution

Scripts/03-01.sql

@@ -10,3 +10,5 @@ SELECT soldYear,
 FROM cte
 GROUP BY soldYear
 ORDER BY soldYear
+
+

Scripts/04-01.sql

@@ -35,3 +35,4 @@ INNER JOIN inventory inv
 INNER JOIN model mdl
   ON mdl.modelId = inv.modelId
 GROUP BY emp.firstName, emp.lastName, mdl.model
+order by emp.employeeId

myscripts/electricCarsSales.sql

@@ -0,0 +1,9 @@
+select 
+  s.salesid, i.modelId, s.soldDate, s.salesAmount
+from sales as s
+inner join 
+  inventory as i on i.inventoryId = s.inventoryId
+WHERE
+  i.modelId in 
+  (select modelid from model
+where enginetype = 'Electric');

myscripts/employee_manager_list.sql

@@ -0,0 +1,10 @@
+SELECT 
+  e.firstName, 
+  e.lastName,
+  m.firstName, 
+  m.lastName
+FROM 
+  employee AS e 
+INNER JOIN employee AS m 
+  on e.employeeId = m.managerId
+LIMIT 5; 

myscripts/least_Max_Car_Sold_By_Each_Emp.sql

@@ -0,0 +1,14 @@
+
+SELECT
+  emp.employeeid, emp.firstname, emp.lastname, 
+  min(sale.salesamount) as "min_sold",
+  max(sale.salesamount) as "max_sold",
+  sale.soldDate
+FROM employee as emp
+INNER JOIN sales as sale
+  on emp.employeeid = sale.employeeid
+WHERE
+  sale.soldDate >= date('now', 'start of year')
+GROUP BY
+  sale.employeeid
+ORDER BY emp.employeeId  ;

myscripts/moreThan5.sql

@@ -0,0 +1,15 @@
+-- with ctc as (
+SELECT
+  emp.employeeid, emp.firstname, emp.lastname, 
+  count(sale.employeeid) as "Total_car_sold"
+FROM employee as emp
+INNER JOIN sales as sale
+  on emp.employeeid = sale.employeeid
+WHERE sale.soldDate >= date('now','start of year')
+GROUP BY
+  sale.employeeid
+HAVING 
+ "Total_car_sold" > 5 ;
+--  )
+
+

myscripts/numberOfCarsSoldPerEmp.sql

@@ -0,0 +1,9 @@
+
+SELECT
+  emp.employeeid, emp.firstname, emp.lastname, count(sale.employeeid) as "Total_car_sold"
+FROM employee as emp
+INNER JOIN sales as sale
+  on emp.employeeid = sale.employeeid
+GROUP BY
+  sale.employeeid
+ORDER BY "Total_car_sold" DESC ;

myscripts/query.sql

@@ -0,0 +1,18 @@
+SELECT name FROM sqlite_master 
+WHERE type='table';
+
+
+Select * from sales
+LIMIT 5;
+
+select * from customer
+limit 5;
+
+select * from employee
+limit 5;
+
+select * from inventory
+limit 5;
+
+select * from model
+limit 20;

myscripts/rankTheCar.sql

@@ -0,0 +1,16 @@
+SELECT  
+  e.firstname, e.lastname, m.model,
+  count(m.model) as 'numberSold',
+  rank() OVER (PARTITION by s.employeeId 
+     order by count(m.model) desc ) as rank
+from sales as s 
+inner join employee as e
+  on s.employeeid = e.employeeid
+inner join inventory as i 
+  on i.inventoryid = s.inventoryid
+inner join model as m 
+  on m.modelid = i.modelid
+GROUP BY
+  s.employeeId, m.modelId
+ORDER by 
+  s.employeeId;

myscripts/runningTotal.sql

@@ -0,0 +1,13 @@
+with cte as 
+(SELECT
+  strftime('%m',solddate) as month,
+  strftime('%Y',solddate) as year,
+  sum(salesamount) as 'monthsale'
+from sales
+GROUP BY year, month
+ORDER BY soldDate)
+
+select year, month, format('$%.2f',monthsale) as 'monthsale', 
+   sum(monthsale) over (PARTITION BY year order by month ) as 'annual_total'
+from cte
+order by year, month;

myscripts/sale_cust_data.sql

@@ -0,0 +1,24 @@
+(SELECT 
+  c.customerid, c.firstname, c.lastname, c.city, s.salesid, s.salesamount
+FROM customer as C
+inner join sales as s 
+  on c.customerid = s.customerid
+)
+UNION
+(SELECT 
+  c.customerid, c.firstname, c.lastname, c.city, s.salesid, s.salesamount
+FROM customer as C
+LEFT join sales as s 
+  on c.customerid = s.customerid
+WHERE
+  s.salesid is NULL
+)
+UNION
+(SELECT 
+  c.customerid, c.firstname, c.lastname, c.city, s.salesid, s.salesamount
+FROM customer as C
+RIGHT join sales as s 
+  on c.customerid = s.customerid
+WHERE 
+  c.customerid is NULL
+)

myscripts/salesPerMonth.sql

@@ -0,0 +1,20 @@
+SELECT
+    emp.firstName,
+    emp.lastName,
+    SUM(CASE WHEN strftime('%m', soldDate) = '01' THEN salesAmount ELSE 0 END) AS JanSales,
+    SUM(CASE WHEN strftime('%m', soldDate) = '02' THEN salesAmount ELSE 0 END) AS FebSales,
+    SUM(CASE WHEN strftime('%m', soldDate) = '03' THEN salesAmount ELSE 0 END) AS MarSales,
+    SUM(CASE WHEN strftime('%m', soldDate) = '04' THEN salesAmount ELSE 0 END) AS AprSales,
+    SUM(CASE WHEN strftime('%m', soldDate) = '05' THEN salesAmount ELSE 0 END) AS MaySales,
+    SUM(CASE WHEN strftime('%m', soldDate) = '06' THEN salesAmount ELSE 0 END) AS JunSales,
+    SUM(CASE WHEN strftime('%m', soldDate) = '07' THEN salesAmount ELSE 0 END) AS JulSales,
+    SUM(CASE WHEN strftime('%m', soldDate) = '08' THEN salesAmount ELSE 0 END) AS AugSales,
+    SUM(CASE WHEN strftime('%m', soldDate) = '09' THEN salesAmount ELSE 0 END) AS SepSales,
+    SUM(CASE WHEN strftime('%m', soldDate) = '10' THEN salesAmount ELSE 0 END) AS OctSales,
+    SUM(CASE WHEN strftime('%m', soldDate) = '11' THEN salesAmount ELSE 0 END) AS NovSales,
+    SUM(CASE WHEN strftime('%m', soldDate) = '12' THEN salesAmount ELSE 0 END) AS DecSales
+FROM sales sls
+INNER JOIN employee emp ON sls.employeeId = emp.employeeId
+WHERE sls.soldDate >= '2021-01-01' AND sls.soldDate < '2022-01-01'
+GROUP BY emp.firstName, emp.lastName
+ORDER BY emp.lastName, emp.firstName;

myscripts/salesPerYear.sql

@@ -0,0 +1,12 @@
+with ctc as 
+(SELECT 
+  strftime('%Y', solddate) as 'soldyear',
+  salesAmount
+from sales
+)
+select soldyear, format('$%.2f',round(sum(salesAmount),5)) as 'total_sale' 
+FROM ctc
+GROUP BY soldYear
+ORDER BY soldYear;
+
+-- FORMAT("$%.2f", sum(salesAmount)) AS AnnualSales

myscripts/this_last_month.sql

@@ -0,0 +1,12 @@
+with cte as 
+(select 
+  strftime('%Y-%m', solddate) as monthsold,
+  count(salesId) as 'numberof_cars'
+from sales
+GROUP BY monthsold)
+
+select monthsold, numberof_cars as ThisMonth,
+  LAG(numberof_cars, 1,0) over calmonth as PreviousMonth
+from cte
+WINDOW calmonth as (ORDER BY monthsold)
+ORDER by monthsold

myscripts/zero_sale_saleperson.sql

@@ -0,0 +1,11 @@
+select 
+  emp.firstname, emp.lastname, emp.title, emp.startdate, 
+  sale.salesId
+FROM 
+  employee AS emp
+LEFT JOIN sales as sale ON
+  emp.employeeId = sale.employeeid
+WHERE 
+  emp.title = "Sales Person"
+  AND 
+  sale.salesAmount is NULL;