SUBSTITUTEWITHINDEX DAX Function (Table manipulation)

Returns a table which represents the semijoin of two tables supplied and for which the common set of columns are replaced by a 0-based index column. The index is based on the rows of the second table sorted by specified order expressions.

Syntax

SUBSTITUTEWITHINDEX ( <Table>, <Name>, <SemiJoinIndexTable>, <Expression> [, [<Order>] [, <Expression> [, [<Order>] [, … ] ] ] ] )
Parameter Attributes Description
Table
Iterator

Table to be modified.

Name

A name of the column to be added to the first table.

SemiJoinIndexTable

Table that will be ordered and used to calculate index and to join with the first argument.

Expression
Row Context
Repeatable

Order by expression for the second parameter (SemiJoinIndexTable).

Order Optional
Repeatable

The order to be applied. 0/FALSE/DESC – descending; 1/TRUE/ASC – ascending.

Return values

Table An entire table or a table with one or more columns.

A table which includes only those values present in the indexColumnsTable table and which has an index column instead of all columns present (by name) in the indexColumnsTable table.

Examples

--  SUBSTITUTEWITHINDEX is a tool function used mainly by
--  Power BI to map values in a query to column in a matrix
--  by substituting the index columns with a number indicating
--  the column number where to put the result.
--  The matching between the two tables is based on column names.
DEFINE
    VAR R =
        SUMMARIZECOLUMNS (
            'Product'[Brand],
            'Date'[Calendar Year],
            TREATAS ( { "Contoso", "Fabrikam" }, 'Product'[Brand] ),
            "Amt", [Sales Amount]
        )
    VAR C =
        SUMMARIZE ( Sales, 'Date'[Calendar Year] )
    VAR Result =
        SUBSTITUTEWITHINDEX ( R, "Column #", C, 'Date'[Calendar Year], ASC )

EVALUATE R

EVALUATE C

EVALUATE Result
Brand Calendar Year Amt
Contoso 2007-01-01 2,729,818.54
Fabrikam 2007-01-01 1,652,751.34
Contoso 2008-01-01 2,369,167.68
Fabrikam 2008-01-01 1,993,123.48
Contoso 2009-01-01 2,253,412.80
Fabrikam 2009-01-01 1,908,140.91
Calendar Year
2007-01-01
2008-01-01
2009-01-01
Brand Amt Column #
Contoso 2,729,818.54 0
Fabrikam 1,652,751.34 0
Contoso 2,369,167.68 1
Fabrikam 1,993,123.48 1
Contoso 2,253,412.80 2
Fabrikam 1,908,140.91 2

Last update: Jul 24, 2021   » Contribute   » Show contributors

Contributors: Alberto Ferrari, Marco Russo

Microsoft documentation: https://docs.microsoft.com/en-us/dax/substitutewithindex-function-dax

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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.

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.

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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