| countDistinct {SparkR} | R Documentation |
Count Distinct
Aggregate function: returns the number of distinct items in a group.
countDistinct(x, ...) n_distinct(x, ...) ## S4 method for signature 'Column' countDistinct(x, ...) ## S4 method for signature 'Column' n_distinct(x, ...)
the number of distinct items in a group.
Other agg_funcs: agg,
approxCountDistinct, avg,
first, kurtosis,
last, max,
mean, min, n,
sd, skewness,
stddev_pop, stddev_samp,
sumDistinct, sum,
var_pop, var_samp,
var
## Not run: countDistinct(df$c)
## Not run: n_distinct(df$c)