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count_distinct

Counts all distinct non-null grouped values.

count_distinct(xs:list) -> int

Description​

The count_distinct function returns the number of unique, non-null values in xs.

xs: list​

The values to count.

Examples​

Count distinct values​

from [
  {x: 1},
  {x: 2},
  {x: 2},
  {x: 3},
]
summarize unique=count_distinct(x)
{unique: 3}

See Also​

count, distinct