Not sure about PostGres or Oracle, but using MySQL you can leave out the '+' sign and replace with a comma: 
(NOW(), INTERVAL 1 MONTH)
I'd also look at the DATE_FORMAT which is a handy little tool: 
DATE_FORMAT(DATE_SUB(NOW(), INTERVAL 1 MONTH), '%Y-%m-%d')

In reply to Re: Re: DBI quoting when I don't want it to by barrd
in thread DBI quoting when I don't want it to by Tardis

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