[KMV]

По коду понятней будет:

display real p17()
{
    RAssetStandards assetStandards = RassetStandards::find(rassetTable.AccountNum, rassetStandardId);

    if (assetStandards.Say)
        return (select firstonly reverse rassetsayvalue
                    where rassetsayvalue.Say       == assetStandards.Say &&
                          rassetsayvalue.BeginDate <= endDate).Namor;
    return 0;
}

Say - шифр аналитического учета