| countDistinct {SparkR} | R Documentation |
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, ...)
x |
Column to compute on |
... |
other columns |
the number of distinct items in a group.
countDistinct since 1.4.0
n_distinct since 1.4.0
Other agg_funcs: agg, avg,
count, first,
kurtosis, last,
max, mean, min,
sd, skewness,
stddev_pop, stddev_samp,
sumDistinct, sum,
var_pop, var_samp,
var
## Not run: countDistinct(df$c)
## Not run: n_distinct(df$c)