22. RELATED | RELATEDTABLE | CROSSFILTER DAX Functions in Power BI

Описание: RELATED:
The RELATED function is used to retrieve a single related value from another table in a one-to-many or many-to-one relationship. It is commonly used when you have tables connected by relationships, and you want to access a specific value from the related table.

RELATEDTABLE:
The RELATEDTABLE function is used to retrieve an entire table related to the current row. This can be useful when you need to perform aggregations or filter data based on related tables.
CROSSFILTER:

The CROSSFILTER function is used to modify the behavior of relationships between tables in Power BI. It allows you to specify the direction of filtering between tables to control how filters are applied.
The two options for CROSSFILTER are "Both" and "Single." "Both" means that filtering is applied in both directions (from the primary table to the related table and vice versa), while "Single" means that filtering is only applied in one direction (either from the primary to the related table or vice versa).
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