Distinct count

Supported in: Batch, Streaming

Calculate distinct number of values in column.

Expression categories: Aggregate

Declared arguments

• Expression - The column of on which distinct count is computed.
  Expression<AnyType>

Output type: Long

Examples

Example 1: Base case

Argument values:

• Expression: values

Given input table:

Outputs: 3

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Example 2: Null case

Argument values:

• Expression: values

Given input table:

Outputs: 1

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