Bonjour à tous !
Une proposition ?
let
Source = Excel.CurrentWorkbook(){[Name="Tableau1"]}[Content],
Types = Table.TransformColumnTypes(Source,{{"Production Start Date", type datetime}, {"Production End Date", type datetime}}),
Ajt_Jours = Table.AddColumn(Types, "Jours", each Number.RoundUp( Number.From([Production End Date]-[Production Start Date])))
in
Ajt_Jours