11 lines
383 B
SQL
11 lines
383 B
SQL
-- Determine the total number of purchases for each of the last ten days. List the date, as well as the total number of purchases.
|
|
|
|
-- Expected Heading: RELATION {time INTEGER, cnt INTEGER}
|
|
-- How do you treat the default case as showed in the instructions?
|
|
|
|
SELECT time, COUNT(*) AS cnt
|
|
FROM Purchases
|
|
where time > date((SELECT MAX(time) FROM Purchases),'-10 days')
|
|
GROUP BY time
|
|
;
|