COUNT DAX Function (Aggregation)

Counts the number of rows in the table where the specified column has a non-blank value.

Syntax

COUNT ( <ColumnName> )
Parameter Attributes Description
ColumnName

The column that contains the values to be counted.

Return values

Scalar A single integer value.

Returns the number of cells in a column that contain a non blank value.

Remarks

The only argument allowed to this function is a column.

When the function finds no rows that are non-blank, it returns a blank.

COUNT and COUNTA are identical in DAX for all the data types except Boolean. COUNTA can operate on a Boolean data type, whereas COUNT cannot do that.

The COUNT function internally executes COUNTX, without any performance difference.
The following COUNT call:

COUNT ( table[column] )

corresponds to the following COUNTX call:

COUNTX (
    table,
    table[column]
)

Related functions

Other related functions are:

Last update: Aug 23, 2019   » Contribute   » Show contributors

Contributors: Alberto Ferrari, Marco Russo, Kenneth Barber

MSDN documentation: https://docs.microsoft.com/en-us/dax/count-function-dax

DAX Conventions
Context Transition

This function performs a Context Transition if called in a Row Context. Click to read more.

Row Context

This expression is executed in a Row Context. Click to read more.

Iterator

Not recommended

The use of this function is not recommended. See Remarks and Related functions for alternatives.

Not recommended

The use of this parameter is not recommended.

Deprecated

This function is deprecated. Jump to the Alternatives section to see the function to use.

Deprecated

This parameter is deprecated and its use is not recommended.

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