Check that a set of columns form unique keys.

For local data.frame only.

checkColsFormUniqueKeys(data, keyColNames)

Arguments

data	data.frame to work with.
keyColNames	character array of column names to check.

Value

logical TRUE if the rows of data are unique addressable by the columns named in keyColNames.

Examples

d <- data.frame(key = c('a','a', 'b'), k2 = c(1 ,2, 2))
checkColsFormUniqueKeys(d, 'key') # should be FALSE
#> [1] FALSE
checkColsFormUniqueKeys(d, c('key', 'k2')) # should be TRUE
#> [1] TRUE