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ALTER TRIGGER

ALTER TRIGGER — change the definition of a trigger

Synopsis

ALTER TRIGGERname ONtable_name RENAME TOnew_nameALTER TRIGGERname ONtable_name [ NO ] DEPENDS ON EXTENSIONextension_name

Description

ALTER TRIGGER changes properties of an existing trigger.

TheRENAME clause changes the name of the given trigger without otherwise changing the trigger definition. If the table that the trigger is on is a partitioned table, then corresponding clone triggers in the partitions are renamed too.

TheDEPENDS ON EXTENSION clause marks the trigger as dependent on an extension, such that if the extension is dropped, the trigger will automatically be dropped as well.

You must own the table on which the trigger acts to be allowed to change its properties.

Parameters

Notes

The ability to temporarily enable or disable a trigger is provided byALTER TABLE, not byALTER TRIGGER, becauseALTER TRIGGER has no convenient way to express the option of enabling or disabling all of a table's triggers at once.

Examples

To rename an existing trigger:

ALTER TRIGGER emp_stamp ON emp RENAME TO emp_track_chgs;

To mark a trigger as being dependent on an extension:

ALTER TRIGGER emp_stamp ON emp DEPENDS ON EXTENSION emplib;

Compatibility

ALTER TRIGGER is aPostgreSQL extension of the SQL standard.

See Also