This has shown up in the forum a few times. Generally it has been due to corruption, which a compact/repair does not always fix. The only other reason I can recall is because of having Group By on a memo (now called Long Text) field. Since you show that this is from a query, I doubt seeing the table design will help much, but who knows? I think more info about the query is definitely warranted. Non-Access table joins, parameters with cross-tab queries, things like that, have also been known to cause junk values. You wrote "long test" but I think you mean "long text" - AKA memo field...
Last edited by Micron; 03-08-2017 at 11:04 PM.
Reason: clarification
The more we hear silence, the more we begin to think about our value in this universe.
Paraphrase of Professor Brian Cox.