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not-join and mult="first" produces unexpected output #1571

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jangorecki opened this issue Mar 5, 2016 · 0 comments

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jangorecki commented Mar 5, 2016

library(data.table)
x = data.table(c(1,2,2,2,3,4,4))
y = data.table(c(2,3,4,4,4,5))
x[!y, on=names(x), mult="first"]
#   V1
#1:  1
#2:  2
#3:  2
#4:  4

## expected
#   V1
#1:  1

arunsrinivasan added bug High labels

arunsrinivasan added this to the v1.9.8 milestone

arunsrinivasan self-assigned this

arunsrinivasan closed this as completed in

b121cfa

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