Sql = "SELECT T2.aa, T1.İlkbb " & _
"FROM [Sayfa2$] as T2 LEFT JOIN (SELECT aa, First(bb) AS ilkbb " & _
"FROM [Sayfa1$] " & _
"GROUP BY aa) as T1 ON T2.aa = T1.aa;"
aşağıdaki kod sorunsuz çalıştı bende