We had a bad case of a databse crash because of a mis-usage of 0xdbe, the user simply used the Click to count option you have in the View Query window.
The problem is that when you double-click a table, then a window opens with the first 500 rows of the table, but when the actual query that runs is
select * from <table_name>
So when the user chose to "count" the results of the query what 0xdbe did is select count(*) from (select * from <table_name>).
Our DBA told me this happens on a table that's 1TB large and since this query first creates a temporary table our DB crashed.
To summarize - I think 0xdbe should limit the usage of the Click to count option in such cases.