Returns the unique rank for the current context within the specified partition sorted by the specified order or on the axis specified.


ROWNUMBER ( [<Relation>] [, <OrderBy>] [, <Blanks>] [, <PartitionBy>] [, <MatchBy>] [, <Reset>] )
Parameter Attributes Description
Relation Optional

A table expression where the RANK is computed. If omitted, OrderBy must be explicitly specified.

OrderBy Optional

Columns that define how each partition is sorted. If omitted, Relation must be explicitly specified.

Blanks Optional

Defines how to handle BLANK OrderBy values. Valid values include: DEFAULT, FIRST, LAST.

PartitionBy Optional

Columns that define how Relation is partitioned.

MatchBy Optional

Columns that define how the current row is identified.

Reset Optional

Specifies how the calculation restarts. Valid values are: None, LowestParent, HighestParent, or an integer.

Related articles

Learn more about ROWNUMBER in the following articles:

Last update: Feb 17, 2024   » Contribute   » Show contributors

Contributors: Alberto Ferrari, Marco Russo

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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.


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.


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


A volatile function may return a different result every time you call it, even if you provide the same arguments. Click to read more.


This parameter is deprecated and its use is not recommended.

DirectQuery compatibility

Limitations are placed on DAX expressions allowed in measures and calculated columns.
The state below shows the DirectQuery compatibility of the DAX function.


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