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Databases Reporting with SQL Date and Time Functions Calculating Dates

Posted by ABRAHAM NYONI
ABRAHAM NYONI
9,692 Points

Can someone help me on this challenge on SQL,CALCULATING DATES.

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.

D Elis
D Elis
13,571 Points

Here is the solution: SELECT COUNT(*) AS ordered_yesterday_and_shipped FROM orders WHERE status ='shipped' AND ordered_on = DATE('now', '-1 day')

8 Answers

Walter Guerrero
Walter Guerrero
6,843 Points
Walter Guerrero
Walter Guerrero
6,843 Points

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

this worked for me. probly because of your aliashope that helped

johnny lazo
johnny lazo
13,433 Points
johnny lazo
johnny lazo
13,433 Points

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

Nolusindiso Hleko
Nolusindiso Hleko
7,358 Points

Is there a reason why Jonny's solution is downvoted I wrote the same and it worked:

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

ABRAHAM NYONI
ABRAHAM NYONI
9,692 Points
ABRAHAM NYONI
ABRAHAM NYONI
9,692 Points

SELECT COUNT(status) AS shipped_yesterday FROM orders WHERE status = "shipped" AND ordered_on = DATE("now", "-1 day"); //This was my code.

Faisal Tariq
Faisal Tariq
1,746 Points

I have the same problem. Using the same code as you but not getting any output.

Aya khaled
PLUS
Aya khaled
Courses Plus Student 1,967 Points
Aya khaled
Aya khaled
Courses Plus Student 1,967 Points

i recieve error

Robbie Thomas
Robbie Thomas
31,093 Points
Robbie Thomas
Robbie Thomas
31,093 Points

Walter Guererro is right. However, when I did my code, it was like this:

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

And it told me it was expecting a count of 14. If you do that code on the SQL playground that goes along with the previous video, the count is 14. Also, I could be wrong about this but do these AS statements not require the use of quotation marks unless they need a string? Doesn't seem right that they want you to put ordered_yesterday_and_shipped with quotes in it.

Marcos Treviño Rodriguez
Marcos Treviño Rodriguez
5,711 Points
Marcos Treviño Rodriguez
Marcos Treviño Rodriguez
5,711 Points

I just did the same mistake by adding twice the "WHERE" =(, but when fixing it, it worked.

Kingsley Atuba
Kingsley Atuba
2,891 Points
Kingsley Atuba
Kingsley Atuba
2,891 Points

SELECT COUNT(*) AS shipped_today FROM orders WHERE ordered_on = DATE() AND status = 'shipped';

Judith Copeland
seal-mask
PLUS
.a{fill-rule:evenodd;}techdegree seal-36
Judith Copeland
Full Stack JavaScript Techdegree Graduate 17,924 Points
Judith Copeland
.a{fill-rule:evenodd;}techdegree seal-36
Judith Copeland
Full Stack JavaScript Techdegree Graduate 17,924 Points

I tried all the code above, and finally adding quotes around the alias worked for me:

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