approxCountDistinct

Description

Aggregate function: returns the approximate number of distinct items in a group.

Approx Count Distinct

Usage

approxCountDistinct(x, ...)

## S4 method for signature 'Column'
approxCountDistinct(x, rsd = 0.05)

## S4 method for signature 'Column'
approxCountDistinct(x, rsd = 0.05)

Value

the approximate number of distinct items in a group.

See Also

Other agg_funcs: agg, avg, countDistinct, first, kurtosis, last, max, mean, min, n, sd, skewness, stddev_pop, stddev_samp, sumDistinct, sum, var_pop, var_samp, var

Other agg_funcs: agg, avg, countDistinct, first, kurtosis, last, max, mean, min, n, sd, skewness, stddev_pop, stddev_samp, sumDistinct, sum, var_pop, var_samp, var

Examples

## Not run: approxCountDistinct(df$c)
## Not run: approxCountDistinct(df$c, 0.02)