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sailor winkelman
2,603 PointsCOUNT and DATE functions: Count calculation is wrong, but what is it counting?
In an ecommerce database there's an orders table with the columns id, product_id, user_id, address_id, ordered_on, status and cost. Count the total number of orders that have the status of shipped today. Alias it to shipped_today.
SELECT COUNT(*) AS "shipped_today" FROM orders WHERE status = "shipped" AND DATE("now");
I see that 149 is being returned here, which probably means there is a problem with the DATE("now") condition, or maybe with status = "shipped".
What's happening? Thank you!
2 Answers
Dean Wiseman
20,901 PointsThe question needs to be re-worded.
"In an ecommerce database there's an orders table with the columns id, product_id, user_id, address_id, ordered_on, status and cost. Count the total number of orders that have the status of shipped today. Alias it to shipped_today."
There is nothing to compare on to show that it was shipped today. There is a status of "shipped". The only date you can compare on is when it was ordered on. The question isn't asking for the date it was ordered, it's asking for the date shipped.
Steven Parker
231,261 Points
SELECT COUNT(*) AS "shipped_today" FROM orders WHERE status = "shipped" AND ordered_on = DATE("now");