Gilles,

It's documented in VFP8 help under Behavior Changes Since Visual FoxPro 7.0 and INFO: SQL SELECT Behavior Changes in Visual FoxPro 8.0 mskb #813361. One of the way to eliminate this error is to includeFactures.ireservid field into group by clause.

>I have a strange problem in VFP8 with the View Designer :
>
>When I open a view in VFP7 -> no problem, the same view opened in VFP8 give me an error message :
>
>SQL: GROUP BY CLAUSE is missing or invalid.
>
>Here is the SQL syntax of my View :
>

>SELECT Factures.ireservid, Factures.inofac, SUM(Factdetail.iprix);
> FROM ;
>     appdata!factures ;
>    INNER JOIN appdata!factdetail ;
>   ON  Factures.inofac = Factdetail.inofac;
> WHERE  Factures.lpaye = .F.;
> GROUP BY Factures.inofac;
> ORDER BY Factures.inofac

>Perhaps a solution ??