Counting rows where a timestamp is less than 24 hours old

Question

For the query below, how could I count the number of rows where datesent is less than 24 hours old? (The field datesent is a timestamp).

T

Answer 1

I see this is a old one though for anybody that gets here trough an online search later on, I would like to clarify that the question is about a timestamp, not datetime. I needed a count based on timestamp. Easy fix is to convert the datetime to unix_timestamp. Tested on MySQL 5.7

SELECT COUNT(*) AS cnt
FROM PRIVATEMESSAGE pm
WHERE pm.datesent >= UNIX_TIMESTAMP(DATE_SUB(NOW(), INTERVAL 1 DAY))