On 7/20/15 6:02 PM, Corey Huinker wrote:
By using only(a.name_of_the_thing) we'd have a bit more clarity that the
author expected all of those values to be the same across the aggregate
window, and discovering otherwise was reason enough to fail the query.
*IF* we're considering adding these to core, I think that only() would be
just a slight modification of the last() implementation, and could be done
at the same time.
[1] I don't care what it gets named. I just want the functionality.
A big +1 from me. In fact, I wrote a patch implementing this for 9.5
but never got around to finishing it.
.m
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