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
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