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October 16, 2015
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Hi,
I have an Excel file on a SharePoint folder of about 1 MB. These Excel file contains 10 worksheets with 60 to 90 columns and between 20 to 300 rows of data.
I have another Excel file were I load all the worksheets of this file, via Power Query, to the data model, as connection only. These data model file becomes now about 8 MB. I don't understand why this is. The data is stored only once in the data model and I thought that the data model is able to compress the data. Is there any thing I can do to reduce the file size?
Thanks
Ton
July 16, 2010
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Hi Ton,
Are you able to share the query file and source files?
Power Pivot's compression works best when there are duplicate values in a column. If you have columns of unique values, then there's nothing to compress, so it may be that you have a lot of unique data, as opposed to typical data structures where many columns have repeating values that can be compressed into single records.
Mynda
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