I am developing this sort of query since last friday. And only since yesterday (= update Beta 1.6) I am plagued with those crashes within the query window. (it is no complete prove that it worked - but on monday I developed this query for around 5 tables, without plague of crashes; and yesterday / today I did it for 2 1/2 tables, and had around 6 crashes)
After sending the mail I continued to work on that query; and thistime I named the column, that is
select md5(whatever) as checksum, * from tablename
and: no crash (so far)
Maybe sth. else changed I do not know of. Will keep on doing this on 3 more tables,
Hmm, I can't see how those changes would break things. How big is your dataset btw? I tried my own version of your query on a few hundred rows of data and it worked fine after 50 or more refreshes.
/D