Days between dates

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Need to select records who's number of days between an expiration date and the current date that is between 0 and 90. I have a field in my MySQL database called "expire". How might I accomplish this?

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... WHERE DATEDIFF(CURDATE(), `expire`) BETWEEN 0 AND 90;

 

 

http://dev.mysql.com/doc/refman/5.0/en/date-and-time-functions.html#function_datediff