comparing stored timestamp with NOW()

[Terion Miller <webdev.terion@xxxxxxxxx>]

Hi I need help formatting a sql statement that compares my stored timestamp
$stamp with NOW()
what I'm trying to do is generate a SELECT statement that pulls only records
within 7 days of NOW()
should i use

 *SELECT DATEDIFF('stamp','NOW()')=7d; not sure how the difference
part is syntaxed*

Thanks
Terion

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