ALTER TRIGGER

Changes the definition of a trigger.

Synopsis

ALTER TRIGGER <name> ON <table> RENAME TO <newname>

Description

ALTER TRIGGER changes properties of an existing trigger. The RENAME clause changes the name of the given trigger without otherwise changing the trigger definition. You must own the table on which the trigger acts to be allowed to change its properties.

Parameters

name: The name of an existing trigger to alter.
table: The name of the table on which this trigger acts.
newname: The new name for the trigger.

Notes

The ability to temporarily activate or deactivate a trigger is provided by ALTER TABLE, not by ALTER TRIGGER, because ALTER TRIGGER has no convenient way to express the option of enabling or deactivating all of a table's triggers at once.

Note that Greenplum Database has limited support of triggers in this release. See CREATE TRIGGER for more information.

Examples

To rename an existing trigger:

ALTER TRIGGER emp_stamp ON emp RENAME TO emp_track_chgs;

Compatibility

ALTER TRIGGER is a Greenplum Database extension of the SQL standard.