PostgreSQL

39.2. Event Trigger Firing Matrix
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39.2. Event Trigger Firing Matrix

Table 39.1 lists all commands for which event triggers are supported.

Table 39.1. Event Trigger Support by Command Tag

Command Tag ddl_command_start ddl_command_end sql_drop table_rewrite Notes

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 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 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 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`	`-`	`-`

ALTER AGGREGATE

X

-

ALTER COLLATION

X

-

ALTER CONVERSION

X

-

ALTER DOMAIN

X

-

ALTER DEFAULT PRIVILEGES

X

-

ALTER EXTENSION

X

-

ALTER FOREIGN DATA WRAPPER

X

-

ALTER FOREIGN TABLE

X

-

ALTER FUNCTION

X

-

ALTER LANGUAGE

X

-

ALTER LARGE OBJECT

X

-

ALTER MATERIALIZED VIEW

X

-

ALTER OPERATOR

X

-

ALTER OPERATOR CLASS

X

-

ALTER OPERATOR FAMILY

X

-

ALTER POLICY

X

-

ALTER PUBLICATION

X

-

ALTER SCHEMA

X

-

ALTER SEQUENCE

X

-

ALTER SERVER

X

-

ALTER STATISTICS

X

-

ALTER SUBSCRIPTION

X

-

ALTER TABLE

X

ALTER TEXT SEARCH CONFIGURATION

X

-

ALTER TEXT SEARCH DICTIONARY

X

-

ALTER TEXT SEARCH PARSER

X

-

ALTER TEXT SEARCH TEMPLATE

X

-

ALTER TRIGGER

X

-

ALTER TYPE

X

-

X

ALTER USER MAPPING

X

-

ALTER VIEW

X

-

COMMENT

X

-

Only for local objects

CREATE ACCESS METHOD

X

-

CREATE AGGREGATE

X

-

CREATE CAST

X

-

CREATE COLLATION

X

-

CREATE CONVERSION

X

-

CREATE DOMAIN

X

-

CREATE EXTENSION

X

-

CREATE FOREIGN DATA WRAPPER

X

-

CREATE FOREIGN TABLE

X

-

CREATE FUNCTION

X

-

CREATE INDEX

X

-

CREATE LANGUAGE

X

-

CREATE MATERIALIZED VIEW

X

-

CREATE OPERATOR

X

-

CREATE OPERATOR CLASS

X

-

CREATE OPERATOR FAMILY

X

-

CREATE POLICY

X

-

CREATE PUBLICATION

X

-

CREATE RULE

X

-

CREATE SCHEMA

X

-

CREATE SEQUENCE

X

-

CREATE SERVER

X

-

CREATE STATISTICS

X

-

CREATE SUBSCRIPTION

X

-

CREATE TABLE

X

-

CREATE TABLE AS

X

-

CREATE TEXT SEARCH CONFIGURATION

X

-

CREATE TEXT SEARCH DICTIONARY

X

-

CREATE TEXT SEARCH PARSER

X

-

CREATE TEXT SEARCH TEMPLATE

X

-

CREATE TRIGGER

X

-

CREATE TYPE

X

-

CREATE USER MAPPING

X

-

CREATE VIEW

X

-

DROP ACCESS METHOD

X

-

DROP AGGREGATE

X

-

DROP CAST

X

-

DROP COLLATION

X

-

DROP CONVERSION

X

-

DROP DOMAIN

X

-

DROP EXTENSION

X

-

DROP FOREIGN DATA WRAPPER

X

-

DROP FOREIGN TABLE

X

-

DROP FUNCTION

X

-

DROP INDEX

X

-

DROP LANGUAGE

X

-

DROP MATERIALIZED VIEW

X

-

DROP OPERATOR

X

-

DROP OPERATOR CLASS

X

-

DROP OPERATOR FAMILY

X

-

DROP OWNED

X

-

DROP POLICY

X

-

DROP PUBLICATION

X

-

DROP RULE

X

-

DROP SCHEMA

X

-

DROP SEQUENCE

X

-

DROP SERVER

X

-

DROP STATISTICS

X

-

DROP SUBSCRIPTION

X

-

DROP TABLE

X

-

DROP TEXT SEARCH CONFIGURATION

X

-

DROP TEXT SEARCH DICTIONARY

X

-

DROP TEXT SEARCH PARSER

X

-

DROP TEXT SEARCH TEMPLATE

X

-

DROP TRIGGER

X

-

DROP TYPE

X

-

DROP USER MAPPING

X

-

DROP VIEW

X

-

GRANT

X

-

Only for local objects

IMPORT FOREIGN SCHEMA

X

-

REFRESH MATERIALIZED VIEW

X

-

REVOKE

X

-

Only for local objects

SECURITY LABEL

X

-

Only for local objects

SELECT INTO

X

-

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39.3. Writing Event Trigger Functions in C