Maybe two days isn't all that bad.
When it's for just one column of a total of 95, my guess would be that this is pretty bad :P. But rather than the 5TB file, it's sorting and searching for unique values in 50GB (~5TB/95) that I'd be the most worried about personally.

In reply to Re^2: Possible faster way to do this? by Eily
in thread Possible faster way to do this? by Anonymous Monk

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