In 9.1, if a table is created using an explicit pg_temp qualification, the pg_class.relpersistence is marked 'p', not 't'.
postgres=# CREATE TABLE pg_temp.temptable (i int4); CREATE TABLE postgres=# select relpersistence from pg_class where relname = 'temptable'; relpersistence ---------------- p (1 row) BUt the table does go away if I exit the session: postgres=# \q edb-pg ~/git-pg1 $ psql psql (9.0.1, server 9.2devel) WARNING: psql version 9.0, server version 9.2. Some psql features might not work. Type "help" for help. postgres=# select relpersistence from pg_class where relname = 'temptable'; relpersistence ---------------- (0 rows) So in that sense, it does work as a temp table, but the relpersistence is not 't'. So, is the "temp"ness no longer identified by pg_class.relpersistence now? In RelationBuildLocalRelation(), previously, namespace was used to determine if the table should be marked temporary: /* it is temporary if and only if it is in my temp-table namespace */ rel->rd_istemp = isTempOrToastNamespace(relnamespace); But in Master branch, now if I look at RelationBuildLocalRelation(), there is no such logic to mark relpersistence. Was this intentional or is it a bug? Regards -Amit Khandekar -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers