postgres=# CREATE TEMP TABLE temp_list_part (a int) PARTITION BY LIST (a); CREATE TABLE postgres=# CREATE TEMP TABLE temp_def_part (a int); CREATE TABLE postgres=# ALTER TABLE temp_list_part ATTACH PARTITION temp_def_part DEFAULT; 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. !>