38.2. Event Trigger Firing Matrix
Table 38.1 lists all commands for which event triggers are supported.
Table 38.1. 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
        | 
        -
        | 
        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 ROUTINE
        | 
        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 ROUTINE
        | 
        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
        | 
        -
        | 
        -
        | |
| 
        REINDEX
        | 
        X
        | 
        X
        | 
        -
        | 
        -
        | |
| 
        REVOKE
        | 
        X
        | 
        X
        | 
        -
        | 
        -
        | Only for local objects | 
| 
        SECURITY LABEL
        | 
        X
        | 
        X
        | 
        -
        | 
        -
        | Only for local objects | 
| 
        SELECT INTO
        | 
        X
        | 
        X
        | 
        -
        | 
        -
        |