danajao (9/7/2010)

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Thanks for a very interesting tip ... problem I have though is while my expression provides me with a previous date ... it fails when moving into another month for example on September 1, 2010 I would expect the expression to evaluate to August 31, 2010, instead it evaluates to September 30, 2010 ... it handles the date difference within a given month correctly but not when the current month goes into the 2nd month ... just cant figure what the problem is... I'd appreciate your showing me where I'm going wrong ... Thanks.

(DT_DATE) MONTH( DATEADD("mm", 0, GETDATE()) )> (DT_DATE) MONTH( DATEADD("mm", -1, GETDATE()) ) ?

"X:\\WNTS\\Reporting\\List28old "+ RIGHT( "0"+ (DT_WSTR, 2) MONTH( DATEADD("mm", 0, GETDATE()) ) , 2 ) + "-"+ RIGHT( "0"+ (DT_WSTR, 2) DAY( DATEADD("dd", -1, GETDATE()) ) , 2 ) + "-"+ (DT_WSTR, 4) YEAR( GETDATE() )+".csv" :

"X:\\WNTS\\Reporting\\List28old "+ RIGHT( "0"+ (DT_WSTR, 2) MONTH( DATEADD("mm", -1, GETDATE()) ) , 2 ) + "-"+ RIGHT( "0"+ (DT_WSTR, 2) DAY( DATEADD("dd", -1, GETDATE()) ) , 2 ) + "-"+ (DT_WSTR, 4) YEAR( GETDATE() )+".csv"