let
Source = {44000..51000}, //crée une liste
#"Converted to Table" = Table.FromList(Source, Splitter.SplitByNothing(), null, null, ExtraValues.Error),
#"Changed Type" = Table.TransformColumnTypes(#"Converted to Table",{{"Column1", type date}}),
#"Renamed Columns" = Table.RenameColumns(#"Changed Type",{{"Column1", "Date"}}),
#"Inserted Text Between Delimiters" = Table.AddColumn(#"Renamed Columns", "mois", each Text.BetweenDelimiters(Text.From([Date], "fr-BE"), "-", "-"), type text),
#"Inserted Year" = Table.AddColumn(#"Inserted Text Between Delimiters", "année", each Date.Year([Date]), Int64.Type),
#"Changed Type1" = Table.TransformColumnTypes(#"Inserted Year",{{"année", type text}}),
#"Nom du mois inséré" = Table.AddColumn(#"Changed Type1", "Nom du mois", each Date.MonthName([Date]), type text)
in
#"Nom du mois inséré"