DATATABLE Provides a mechanism for declaring an inline set of data values.
Syntax
DATATABLE (ColumnName1, DataType1, ColumnName2, DataType2..., {{Value1, Value2...}, {ValueN, ValueN+1...}...})
Parameters
ColumnName – Any DAX expression that returns a table.
DataType – An enumeration that includes: INTEGER, DOUBLE, STRING, BOOLEAN, CURRENCY, DATETIME
Value – A single argument using Excel syntax for a one dimensional array constant, nested to provide an array of arrays. This argument represents the set of data values that will be in the table
Return Value
A table declaring an inline set of values.
Reference Data
https://docs.microsoft.com/en-us/dax/dax-function-reference