# 40.2. Event Trigger Firing Matrix

Table 40.1 lists all commands for which event triggers are supported.

Table 40.1. Event Trigger Support by Command Tag

Command Tag ddl_​command_​start ddl_​command_​end sql_​drop table_​rewrite Notes
ALTER AGGREGATE X X - -
ALTER COLLATION X X - -
ALTER CONVERSION X X - -
ALTER DOMAIN X X - -
ALTER DEFAULT PRIVILEGES X X - -
ALTER EXTENSION X X - -
ALTER FOREIGN DATA WRAPPER X X - -
ALTER FOREIGN TABLE X X X -
ALTER FUNCTION X X - -
ALTER LANGUAGE X X - -
ALTER LARGE OBJECT X X - -
ALTER MATERIALIZED VIEW X X - -
ALTER OPERATOR X X - -
ALTER OPERATOR CLASS X X - -
ALTER OPERATOR FAMILY X X - -
ALTER POLICY X X - -
ALTER PROCEDURE X X - -
ALTER PUBLICATION X X - -
ALTER SCHEMA X X - -
ALTER SEQUENCE X X - -
ALTER SERVER X X - -
ALTER STATISTICS X X - -
ALTER SUBSCRIPTION X X - -
ALTER TABLE X X X X
ALTER TEXT SEARCH CONFIGURATION X X - -
ALTER TEXT SEARCH DICTIONARY X X - -
ALTER TEXT SEARCH PARSER X X - -
ALTER TEXT SEARCH TEMPLATE X X - -
ALTER TRIGGER X X - -
ALTER TYPE X X - X
ALTER USER MAPPING X X - -
ALTER VIEW X X - -
COMMENT X X - - Only for local objects
CREATE ACCESS METHOD X X - -
CREATE AGGREGATE X X - -
CREATE CAST X X - -
CREATE COLLATION X X - -
CREATE CONVERSION X X - -
CREATE DOMAIN X X - -
CREATE EXTENSION X X - -
CREATE FOREIGN DATA WRAPPER X X - -
CREATE FOREIGN TABLE X X - -
CREATE FUNCTION X X - -
CREATE INDEX X X - -
CREATE LANGUAGE X X - -
CREATE MATERIALIZED VIEW X X - -
CREATE OPERATOR X X - -
CREATE OPERATOR CLASS X X - -
CREATE OPERATOR FAMILY X X - -
CREATE POLICY X X - -
CREATE PROCEDURE X X - -
CREATE PUBLICATION X X - -
CREATE RULE X X - -
CREATE SCHEMA X X - -
CREATE SEQUENCE X X - -
CREATE SERVER X X - -
CREATE STATISTICS X X - -
CREATE SUBSCRIPTION X X - -
CREATE TABLE X X - -
CREATE TABLE AS X X - -
CREATE TEXT SEARCH CONFIGURATION X X - -
CREATE TEXT SEARCH DICTIONARY X X - -
CREATE TEXT SEARCH PARSER X X - -
CREATE TEXT SEARCH TEMPLATE X X - -
CREATE TRIGGER X X - -
CREATE TYPE X X - -
CREATE USER MAPPING X X - -
CREATE VIEW X X - -
DROP ACCESS METHOD X X X -
DROP AGGREGATE X X X -
DROP CAST X X X -
DROP COLLATION X X X -
DROP CONVERSION X X X -
DROP DOMAIN X X X -
DROP EXTENSION X X X -
DROP FOREIGN DATA WRAPPER X X X -
DROP FOREIGN TABLE X X X -
DROP FUNCTION X X X -
DROP INDEX X X X -
DROP LANGUAGE X X X -
DROP MATERIALIZED VIEW X X X -
DROP OPERATOR X X X -
DROP OPERATOR CLASS X X X -
DROP OPERATOR FAMILY X X X -
DROP OWNED X X X -
DROP POLICY X X X -
DROP PROCEDURE X X X -
DROP PUBLICATION X X X -
DROP RULE X X X -
DROP SCHEMA X X X -
DROP SEQUENCE X X X -
DROP SERVER X X X -
DROP STATISTICS X X X -
DROP SUBSCRIPTION X X X -
DROP TABLE X X X -
DROP TEXT SEARCH CONFIGURATION X X X -
DROP TEXT SEARCH DICTIONARY X X X -
DROP TEXT SEARCH PARSER X X X -
DROP TEXT SEARCH TEMPLATE X X X -
DROP TRIGGER X X X -
DROP TYPE X X X -
DROP USER MAPPING X X X -
DROP VIEW X X X -
GRANT X X - - Only for local objects
IMPORT FOREIGN SCHEMA X X - -
REFRESH MATERIALIZED VIEW X X - -
REVOKE X X - - Only for local objects
SECURITY LABEL X X - - Only for local objects
SELECT INTO X X - -