Question

I am tring to query a set of data from mySQL with the following SQL:

SELECT * FROM orders 
WHERE datediff((now()), (SELECT datepurchased FROM orders WHERE email = '[e-mail]')) <= 1

But the problem is I get the error that #1242 - Subquery returns more than 1 row because the statement SELECT datepurchased FROM orders WHERE email = '[e-mail]' is returning more than one rows, which is perfectly correct.

The idea that I wanted is to select from the orders table such that the date difference between the current time and the datepurchased field is <=1 and that the email field is equals to [e-mail].

There could be many rows in the orders table with their email fields as [e-mail]. I just want to find out all of these rows with email fields equals [e-mail] that have datepurchased less than or equals one.

How should I phrase my SQL to achieve this?

Answer 1

There’s no need for a subquery in this case. Simply:

SELECT *
    FROM orders
    WHERE email = '[e-mail]'
        AND DATEDIFF(NOW(), datepurchased) <= 1;