Generates the count of distinct values in a specified column, optionally counted by group. Generated value is of Integer type. 

NOTE: Empty string values are counted. Null values are not counted.

NOTE: When added to a transform, the function calculates the number of distinct values in the specified column, as displayed in the current sample. Counts are not applied to the entire dataset until you run the job. If you change your sample or run the job, the computed values for this function are updated. Transforms that change the number of rows in subsequent recipe steps do not affect the value for the already computed instance of COUNTDISTINCT.

countdistinct(name)

Output: Returns the count of distinct values in the name column.

countdistinct(function_col_ref) [group:group_col_ref] [limit:limit_count]


ArgumentRequired?Data TypeDescription
function_col_refYstringName of column to which to apply the function


For more information on the group and limit parameter, see Pivot Transform.

function_col_ref

Name of the column from which to count values based on the grouping.

Required?Data TypeExample Value
YesString (column reference)myValues

Example - Simple row count