The dataset is some 1000 rows; usually while developing I limit to 10. I did it again: developed a query, and just as I was finishing - crash. (this time without "as checksum")
Wil do it again, with "as checksum" ... and it works.
I keep on trying to make it reproducible, with a limit amount of data.
If you can do it with data that I can have a copy of, that would be very helpful.
Regards, dave.