countDistinct
Returns number of distinct combinations of values in selected columns of DataFrame.
df.countDistinct { age and name }
val age by column<Int>()
val name by columnGroup()
df.countDistinct { age and name }
df.countDistinct("age", "name")
When columns are not specified, returns number of distinct rows in DataFrame.
df.countDistinct()
Last modified: 29 March 2024