Syntax
List.Difference(list1 as list, list2 as list, optional equationCriteria as any) as list
Description
Returns the items in list list1 that do not appear in list list2. Duplicate values are supported. An optional equation criteria value, equationCriteria, can be specified to control equality testing.
Reference Data
https://docs.microsoft.com/en-us/powerquery-m/power-query-m-function-reference