Title: ALTER TRIGGER Author: The PostgreSQL Global Development Group Generator: DocBook XSL Stylesheets v1.79.1 <http://docbook.sf.net/> Date: 2018 Manual: PostgreSQL 9.6.8 Documentation Source: PostgreSQL 9.6.8 Language: English
NAMEALTER_TRIGGER - change the definition of a trigger
ALTER TRIGGER name ON table_name RENAME TO new_name ALTER TRIGGER name ON table_name DEPENDS ON EXTENSION extension_name
ALTER TRIGGER changes properties of an existing trigger. The RENAME clause changes the name of the given trigger without otherwise changing the trigger definition. The DEPENDS 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.
- The name of an existing trigger to alter.
- The name of the table on which this trigger acts.
- The new name for the trigger.
- The name of the extension that the trigger is to depend on.
The ability to temporarily enable or disable a trigger is provided by ALTER TABLE (ALTER_TABLE(7)), not by ALTER TRIGGER, because ALTER TRIGGER has no convenient way to express the option of enabling or disabling all of a table's triggers at once.
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;
ALTER TRIGGER is a PostgreSQL extension of the SQL standard.