Question

I want to make a query that will select a random row from a table that has the start date + time less than the current date.

This is what I have so far:

$query="SELECT * FROM premium 
        WHERE 
        DATE_SUB(CURDATE(),INTERVAL 30 DAY) <= start_date 
        ORDER BY
        RAND() LIMIT 1 ";

I want to replace 30 with the value from the time column for each row.
How can I acces the time value for each row inside the query? (inside the interval)

Answer 1

SELECT * FROM premium 
WHERE start_date < DATE_SUB(CURDATE(),INTERVAL HOUR(start_date) DAY)  
ORDER BY RAND() LIMIT 1 

Or if your column is named time do

SELECT * FROM premium  
WHERE start_date < DATE_SUB(CURDATE(),INTERVAL HOUR(`time`) DAY)  
ORDER BY RAND() LIMIT 1 

Don’t forget to put backticks ` around time, because time is a reserved word.