For local data.frame only.
checkColsFormUniqueKeys(data, keyColNames)
data | data.frame to work with. |
---|---|
keyColNames | character array of column names to check. |
logical TRUE if the rows of data are unique addressable by the columns named in keyColNames.
d <- data.frame(key = c('a','a', 'b'), k2 = c(1 ,2, 2)) checkColsFormUniqueKeys(d, 'key') # should be FALSE#> [1] FALSE#> [1] TRUE