Filter Blanks when link is by RefRecId
问题 I have created a new table QueryCodes and used the new surrogate key functionality in 2012. A Foreign key relationship has been added to SalesTable using a RefRecId as per the new RecID foreign key guidelines. This all works great and I can now select a QueryCode on the SalesTable by a descriptive field rather than a drop down full of RecId s. However - Filtering! In any grid showing all sales orders ( SalesTable ) I cannot filter for "Blank" query codes, ie SalesTable records without a query