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The PostgreSQL 9.0 Reference Manual - Volume 1B - SQL Command Reference
by The PostgreSQL Global Development Group
Paperback (6"x9"), 488 pages
ISBN 9781906966058
RRP £14.95 ($19.95)

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1.122 RESET


RESET -- restore the value of a run-time parameter to the default value


RESET configuration_parameter


RESET restores run-time parameters to their default values. RESET is an alternative spelling for

SET configuration_parameter TO DEFAULT

Refer to SET for details.

The default value is defined as the value that the parameter would have had, if no SET had ever been issued for it in the current session. The actual source of this value might be a compiled-in default, the configuration file, command-line options, or per-database or per-user default settings. This is subtly different from defining it as “the value that the parameter had at session start”, because if the value came from the configuration file, it will be reset to whatever is specified by the configuration file now. See Volume 3: Server Configuration for details.

The transactional behavior of RESET is the same as SET: its effects will be undone by transaction rollback.


Name of a settable run-time parameter. Available parameters are documented in Volume 3: Server Configuration and on the SET reference page.
Resets all settable run-time parameters to default values.


Set the timezone configuration variable to its default value:

RESET timezone;


RESET is a PostgreSQL extension.

See Also


ISBN 9781906966058The PostgreSQL 9.0 Reference Manual - Volume 1B - SQL Command ReferenceSee the print edition