Michael J. Sullivan

> One more thing: Maybe packed arrays should be hashable even though they are mutable. Otherwise we'd probably need a separate frozen packed array type, and to use arrays as...

I've been doing some experimenting with a related issue, which is specialized support for `array.array`. I've got a branch that can get some reasonable speedups on arrays of unsigned ints...

Thanks for the report! As a workaround, don't bind the `group` result to a variable, just stick it into the select.

``` with x := (for x in User union { multi elements := x }) select x { count := count(.elements), } filter .count > 1; ``` fails in a...

As a follow-up to "I'm not sure how common these cases are, though, and I think they can generally be worked around with DISTINCT.", here is a more complex example...

I think that changing this behavior to be less strict should be a pretty safe change to make in the future if users seem to care and we decide it...

Changing this behavior is still not a priority, but "Make it so that all DML statements are compiled to SELECT CTEs that contain the rows to be inserted or updated."...

This is open eleswhere too

Thanks for the report! As a workaround, don't bind the `group` result to a variable, just stick it into the select.

``` with grouped := (for x in Movie union { multi elements := x }) for item in grouped union (select item.elements { title } ); ``` fails in a...