SELECT [Registration], count([Sequence]) AS [wcount],
iif(Sum([Approved] ='yes')=-wcount,"yes","no") AS wapp,
iif(Sum([CS Raised]='yes')=-wcount,"yes","no") AS wcs,
iif(Sum([Rectified]='yes')=-wcount,"yes","no") AS wrec,
iif(Sum([Deferred] ='no') =-wcount,"yes","no") AS wdef
FROM [Daw Status...