Req = "SELECT YEAR(`Date`) & ' - ' & MONTH(`Date`) AS `Année Mois`, " & _
" SUM(`Débit`) AS `Débit_`, " & _
" SUM(`Crédit`) AS `Credit_`, " & _
" SUM(`Différence`) AS `Différence_`, " & _
" SUM(`Cumul`) AS `Cumul mensuel`" & _
" FROM [Tableau$B8:K" & lg & "] " & _
" GROUP BY YEAR(`Date`),MONTH(`Date`)"