Use a dynamic range that grows/contracts with your data.

See Debra Dalgeish's site for some nice tips:
http://contextures.com/xlNames01.html#Dynamic

Dan wrote:

Hello,

I have a pivot table which looks up a worksheet of data, who's range changes
daily (ie some days the data worksheet is 50 rows long, sometimes 500).

Is there any way to have the pivot select ALL rows of data without having to
change the data range manually every day?

Thanks very much,

Dan

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Dave Peterson