DISCARD(7) PostgreSQL 9.3.2 Documentation DISCARD(7)NAMEDISCARD - discard session state
SYNOPSISDISCARD { ALL | PLANS | TEMPORARY | TEMP }
DESCRIPTIONDISCARD releases internal resources associated with a database session.
These resources are normally released at the end of the session.
DISCARD TEMP drops all temporary tables created in the current session.
DISCARD PLANS releases all internally cached query plans. DISCARD ALL
resets a session to its original state, discarding temporary resources
and resetting session-local configuration changes.
PARAMETERS
TEMPORARY or TEMP
Drops all temporary tables created in the current session.
PLANS
Releases all cached query plans.
ALL
Releases all temporary resources associated with the current
session and resets the session to its initial state. Currently,
this has the same effect as executing the following sequence of
statements:
SET SESSION AUTHORIZATION DEFAULT;
RESET ALL;
DEALLOCATE ALL;
CLOSE ALL;
UNLISTEN *;
SELECT pg_advisory_unlock_all();
DISCARD PLANS;
DISCARD TEMP;
NOTESDISCARD ALL cannot be executed inside a transaction block.
COMPATIBILITYDISCARD is a PostgreSQL extension.
PostgreSQL 9.3.2 2013 DISCARD(7)