mysql last month date statement

Question

I have a DATE, how do I write a where that checks for last month until now (either the first of or just today's day -1 month)?

Answer 1

Actually, last month until now would be:

From the beginning of the month:

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SELECT * FROM table
WHERE date >= DATE_FORMAT(CURRENT_DATE - INTERVAL 1 MONTH, '%Y-%m-01')
AND date <= NOW()

Since a month ago: (hopefully you have no future dates on the table)

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SELECT * FROM table
WHERE date >= (CURRENT_DATE - INTERVAL 1 MONTH)

Alternatively, you might want only the last month... Say today is September and you want all August, not including any of September... That is what I understand as 'last month'.

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SELECT * FROM table
WHERE date >= DATE_FORMAT(CURRENT_DATE - INTERVAL 1 MONTH, '%Y/%m/01')
AND date < DATE_FORMAT(CURRENT_DATE, '%Y/%m/01')

You could also do for the same result:

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SELECT * FROM table
WHERE YEAR(date) = YEAR(CURRENT_DATE - INTERVAL 1 MONTH)
AND MONTH(date) = MONTH(CURRENT_DATE - INTERVAL 1 MONTH)

Answer 2

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SELECT * FROM table WHERE dateField > DATE_SUB(NOW(), INTERVAL 1 MONTH)

This selects all rows that have a dateField more recent than current timestamp minus one month (so, for example, given today is 26 Sep 2009 00:56 it would give rows that are more recent than 26 Aug 2009 00:56)