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Databases Reporting with SQL Date and Time Functions Calculating Dates

Katie Martens
Katie Martens
1,962 Points
Posted by Katie Martens
Katie Martens
1,962 Points

Counting orders from yesterday from an ecommerce database

I'm not sure where I'm messing up this query, is the DATE wrong? Should it be BETWEEN DATE?

Steven Parker
Steven Parker
221,330 Points
Steven Parker
Steven Parker
221,330 Points

Please show the query string you were using so we can identify the issue, but you shouldn't need "BETWEEN".

3 Answers

Steven Parker
Steven Parker
221,330 Points
Steven Parker
Steven Parker
221,330 Points

You're close! You calculated the correct date but forgot to compare it to the data column:

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

Also note that both comparisons are placed after the "WHERE" keyword.

Katie Martens
Katie Martens
1,962 Points
Katie Martens
Katie Martens
1,962 Points

Here is a variation of the query I keep trying:

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