SELECT TblHeadk.Nz, TblHeadk.da, TblGL.AccId, TblGL.AccName,
TblGL.cer3, TblGL.deb3, TblGL.des3,
DateDiff("d",[Da],Date()) AS InvoiceAging,
nz([deb3],0)-nz(TblGL.cer3,0) AS m00,
IIf([InvoiceAging] Between 1 And 30,[deb3],0) AS [1-30],
IIf([InvoiceAging] Between 31 And 60,[deb3],0) AS...