You can try correlatade subquery but it most likely will be much slower

Select * ;
	from PrevYear ;
	WHERE NOT EXISTS ( SELECT * FROM thisyear ;
				WHERE PrevYear.mijbrpls = thisyear.mijbrpls ;
					and PrevYear.vlgnr_mut = thisyear.vlgnr_mut )

>This seems to be a bug in VFP 5, this works fine on my homecomputer with vfp 9 but at work it fails. Too bad for me . Could this be achieved w/o a left outer join (because left outer join has been introduced in VFP 5). Thanks beforehand. I have tried Edward's suggestion, but this is not workable.