GENERATE

GENERATE is a DAX function that performs a cross join between two tables, evaluating the second table for each row of the first.

Syntax

GENERATE(
   Table1,
   Table2
)

Argument	Properties	Description
Table1		The base table in Generate.
Table2		A table expression that will be evaluated for each row in the first table.

Return Values

A table with the Cartesian product between each row in table1 and the table that results from evaluating table2 in the context of the current row from table1

Remarks

• If the evaluation of table2 for the current row in table1 returns an empty table, then the result table will not contain the current row from table1. This is different than GENERATEALL() where the current row from table1 will be included in the results and columns corresponding to table2 will have null values for that row.

• All column names from table1 and table2 must be different or an error is returned.

• This function is not supported for use in DirectQuery mode when used in calculated columns or row-level security (RLS) rules.

In the following example the user wants a summary table of the sales by Region and Product Category for the Resellers channel, like the following table:

SalesTerritory[SalesTerritoryGroup]	ProductCategory[ProductCategoryName]	[Reseller Sales]
Europe	Accessories	$ 142,227.27
Europe	Bikes	$ 9,970,200.44
Europe	Clothing	$ 365,847.63
Europe	Components	$ 2,214,440.19
North America	Accessories	$ 379,305.15
North America	Bikes	$ 52,403,796.85
North America	Clothing	$ 1,281,193.26
North America	Components	$ 8,882,848.05
Pacific	Accessories	$ 12,769.57
Pacific	Bikes	$ 710,677.75
Pacific	Clothing	$ 22,902.38
Pacific	Components	$ 108,549.71

The following formula produces the above table:

GENERATE(
SUMMARIZE(SalesTerritory, SalesTerritory[SalesTerritoryGroup])
,SUMMARIZE(ProductCategory 
, [ProductCategoryName]
, "Reseller Sales", SUMX(RELATEDTABLE(ResellerSales_USD), ResellerSales_USD[SalesAmount_USD])
)
)

1. The first SUMMARIZE statement, SUMMARIZE(SalesTerritory, SalesTerritory[SalesTerritoryGroup]), produces a table of territory groups, where each row is a territory group, as shown below:

   SalesTerritory[SalesTerritoryGroup]
   North America
   Europe
   Pacific
   NA

2. The second SUMMARIZE statement, SUMMARIZE(ProductCategory, [ProductCategoryName], "Reseller Sales", SUMX(RELATEDTABLE(ResellerSales_USD), ResellerSales_USD[SalesAmount_USD])), produces a table of Product Category groups with the Reseller sales for each group, as shown below:

   ProductCategory[ProductCategoryName]	[Reseller Sales]
   Bikes	$ 63,084,675.04
   Components	$ 11,205,837.96
   Clothing	$ 1,669,943.27
   Accessories	$ 534,301.99

3. However, when you take the above table and evaluate it under the context of each row from the territory groups table, you obtain different results for each territory.

Related functions

Other functions related to GENERATE are:

• CROSSJOIN
• GENERATEALL
• UNION

Contribute » | Contributors: Rick de Groot
Microsoft documentation: https://learn.microsoft.com/en-us/dax/generate-function-dax