[malex]

А поскольку поля InventTrans мне не нужны, можно написать вообще без group by:

PHP код:

    while select inventTransPosting
        where inventTransPosting.InventTransPostingType == InventTransPostingType::Financial
        exists join inventTransGroup
            where inventTransPosting.InventTransId == inventTransGroup.InventTransId &&
                  inventTransGroup.TransType == InventTransType::InventTransfer