GroupBy.Count(String[]) Method
Definition
Important
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Compute the number of non-null values in each group
public abstract Microsoft.Data.Analysis.DataFrame Count (params string[] columnNames);abstract member Count : string[] -> Microsoft.Data.Analysis.DataFramePublic MustOverride Function Count (ParamArray columnNames As String()) As DataFrameParameters
- columnNames
- String[]
Returns
Applies to
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