ALTER TRIGGER
ALTER TRIGGER
7
SQL - Language Statements
ALTER 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
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. 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.
Parameters
name
The name of an existing trigger to alter.
table_name
The name of the table on which this trigger acts.
new_name
The new name for the trigger.
extension_name
The name of the extension that the trigger is to depend on.
Notes
The ability to temporarily enable or disable a trigger is provided by
, 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.
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 a PostgreSQL>
extension of the SQL standard.
See Also