ALTER TRIGGER — change the definition of a trigger
ALTER TRIGGERname
ONtable_name
RENAME TOnew_name
ALTER TRIGGERname
ONtable_name
DEPENDS ON EXTENSIONextension_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.
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.
The ability to temporarily enable or disable 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 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.
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