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Databases Reporting with SQL Date and Time Functions Calculating Dates

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.


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.


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

2 Answers

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

"-1 Days" Thanks for the guidance.

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

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