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Partitioning options for large fact tables optimised for YoY comparisons

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Hi,

I was after some advice on partitioning fundamentals.

I have a Sales fact table that is approx. 800M rows (300GB), which currently holds 18 months of data.

I have a shedload of measures, incl, calculated measures which provide equivalent values from the year before (and many of these only when current and previous values meet certain conditions).

I know I have a lot to learn on my MDX skills, and have received great assistance on this forum. My question though is, considering my need to always show variance against last years vals for most of my measures, particularly for Yesterday, Current Week and Current Period (4 week period), can you provide any generic advice about how to partition and agg design in SSAS ?

Many thanks,

Ken


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