On Wed, Jun 13, 2018 at 11:08:38AM +0530, Rajkumar Raghuwanshi wrote:
> postgres=# SELECT dense_rank(b) WITHIN GROUP (ORDER BY a) FROM pagg_tab
> GROUP BY b ORDER BY 1;
> server closed the connection unexpectedly
> This probably means the server terminated abnormally
> before or while processing the request.
> The connection to the server was lost. Attempting reset: Failed.
Indeed, thanks for the test case. This used to work in v10 but this is
failing with v11 so I am adding an open item. The plans of the pre-10
query and the query on HEAD are rather similar, and the memory context
at execution time looks messed up.
--
Michael