SELECT 
	COUNT (*)
FROM Customers 
WHERE 
	countryresidence = 'United Kingdom' 
    AND
    strftime('%Y', customersince) = '2019'
ORDER BY customersince ASC;

----
SELECT 
	customerid,
	CustomerSince,
    countryresidence,
    strftime('%Y', customersince) AS YearSince
FROM Customers 
WHERE 
	countryresidence = 'United Kingdom' 
    AND
    YearSince = '2019'
ORDER BY customersince ASC;

---
SELECT 
	customerid,
	CustomerSince,
    julianday(CustomerSince) AS JDaysCustomer,
    julianday('now') AS jDaysCurrent,
    ROUND(julianday('now') - julianday(CustomerSince),0)AS NrOfDaysRegistered,
    strftime('%J','now')- strftime('%J', customersince) AS DaysExist2
FROM Customers 
ORDER BY customersince DESC;

-----
SELECT 
	CustomerSince
FROM Customers 
ORDER BY customersince ASC