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Support allunique with column selectors? #3205

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ericphanson opened this issue Oct 25, 2022 · 1 comment · Fixed by #3232
Closed

Support allunique with column selectors? #3205

ericphanson opened this issue Oct 25, 2022 · 1 comment · Fixed by #3232
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feature
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1.5

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@ericphanson
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It would be nice to have

allunique(df, [col1, col2])

which would give the same result as nrow(unique(df, [col1, col2])) = nrow(df) but presumably faster/with less allocations.
@bkamins bkamins added this to the 1.5 milestone Oct 25, 2022
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bkamins commented Oct 25, 2022

I will add it in 1.5 release (unless there are some conceptual issues - then I will report it).

@bkamins bkamins mentioned this issue Nov 25, 2022
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Add allunique and improve nonunique and describe JuliaData/DataFrames.jl
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@ericphanson @bkamins