Databases Reporting with SQL Date and Time Functions Calculating Dates

Shain Jones
Shain Jones
1,308 Points

Calculating Dates

Below is the objective and response, The response gives me an error of "expecting a count of 14" I am unsure what is incorrect after looking over it for sometime. Any help would be great.

Thanks

Objective: 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 were ordered yesterday and have the status of 'shipped'. Alias it to ordered_yesterday_and_shipped.

Response:

SELECT COUNT(*) AS ordered_yesterday_and_shipped FROM orders WHERE ordered_on = DATE("now", "-1") AND status = "shipped";

2 Answers

KRIS NIKOLAISEN
KRIS NIKOLAISEN
54,370 Points

now is fine. the interval -1 needs to be more explicit

Shain Jones
Shain Jones
1,308 Points

"-1 Days" Thanks for the guidance.

KRIS NIKOLAISEN
KRIS NIKOLAISEN
54,370 Points

You'll want to specify a time period in your date calculation

Shain Jones
Shain Jones
1,308 Points

It does not specify what the actual date is, so I am under the impression that DATE("now", "-1") refers to "yesterday?