| countDistinct {SparkR} | R Documentation |
Count Distinct
Aggregate function: returns the number of distinct items in a group.
## S4 method for signature 'Column' countDistinct(x, ...) ## S4 method for signature 'Column' n_distinct(x, ...) countDistinct(x, ...) n_distinct(x, ...)
the number of distinct items in a group.
Other agg_funcs: approxCountDistinct,
approxCountDistinct,
approxCountDistinct; avg,
avg; count,
count, count,
n, nrow; first,
first; last,
last; max;
mean; min;
sumDistinct, sumDistinct;
sum
Other agg_funcs: approxCountDistinct,
approxCountDistinct,
approxCountDistinct; avg,
avg; count,
count, count,
n, nrow; first,
first; last,
last; max;
mean; min;
sumDistinct, sumDistinct;
sum