DISTINCT (table) Returns a table by removing duplicate rows from another table or expression.
Syntax
DISTINCT(
)
Parameters
table – The table from which unique rows are to be returned. The table can also be an expression that results in a table.
Return Value
A table containing only distinct rows. There is another version of the DISTINCT function, DISTINCT (column), that takes a column name as input parameter.
Reference Data
https://docs.microsoft.com/en-us/dax/dax-function-reference