D.37. RDB$TRIGGERS

RDB$TRIGGERS stores the trigger definitions for all tables and views.

Column NameData TypeDescription

RDB$TRIGGER_NAME

CHAR(63)

Trigger name

RDB$RELATION_NAME

CHAR(63)

The name of the table or view the trigger applies to. NULL if the trigger is applicable to a database event (database trigger)

RDB$TRIGGER_SEQUENCE

SMALLINT

Position of this trigger in the sequence. Zero usually means that no sequence position is specified

RDB$TRIGGER_TYPE

BIGINT

The event the trigger fires on, see Section D.37.1, “RDB$TRIGGER_TYPE Value”

RDB$TRIGGER_SOURCE

BLOB TEXT

Stores the source code of the trigger in PSQL

RDB$TRIGGER_BLR

BLOB BLR

The binary language representation (BLR) of the trigger code (PSQL trigger only)

RDB$DESCRIPTION

BLOB TEXT

Trigger comment text

RDB$TRIGGER_INACTIVE

SMALLINT

Indicates whether the trigger is currently inactive (1) or active (0)

RDB$SYSTEM_FLAG

SMALLINT

Flag: indicates whether the trigger is user-defined (value 0) or system-defined (value 1 or greater)

RDB$FLAGS

SMALLINT

Internal use

RDB$VALID_BLR

SMALLINT

Indicates whether the text of the trigger remains valid after the latest modification by the ALTER TRIGGER statement

RDB$DEBUG_INFO

BLOB

Contains debugging information about variables used in the trigger

RDB$ENGINE_NAME

CHAR(63)

Engine for external triggers. 'UDR' for UDR triggers. NULL for PSQL triggers

RDB$ENTRYPOINT

CHAR(255)

The exported name of the external trigger in the trigger library. Note, this is often not the same as RDB$TRIGGER_NAME, which is the identifier with which the trigger is declared to the database

RDB$SQL_SECURITY

BOOLEAN

The SQL SECURITY mode (DEFINER or INVOKER):

NULL - initial default (INVOKER) FALSE - INVOKER TRUE - DEFINER

D.37.1. RDB$TRIGGER_TYPE Value

The value of RDB$TRIGGER_TYPE is built from:

1

before insert

2

after insert

3

before update

4

after update

5

before delete

6

after delete

17

before insert or update

18

after insert or update

25

before insert or delete

26

after insert or delete

27

before update or delete

28

after update or delete

113

before insert or update or delete

114

after insert or update or delete

8192

on connect

8193

on disconnect

8194

on transaction start

8195

on transaction commit

8196

on transaction rollback

Identification of the exact RDB$TRIGGER_TYPE code is a little more complicated, since it is a bitmap, calculated according to which phase and events are covered and the order in which they are defined. For the curious, the calculation is explained in this code comment by Mark Rotteveel.

For DDL triggers, the trigger type is obtained by bitwise OR above the event phase (0 — BEFORE, 1 — AFTER) and all listed types events:

0x0000000000004002

CREATE TABLE

0x0000000000004004

ALTER TABLE

0x0000000000004008

DROP TABLE

0x0000000000004010

CREATE PROCEDURE

0x0000000000004020

ALTER PROCEDURE

0x0000000000004040

DROP PROCEDURE

0x0000000000004080

CREATE FUNCTION

0x0000000000004100

ALTER FUNCTION

0x0000000000004200

DROP FUNCTION

0x0000000000004400

CREATE TRIGGER

0x0000000000004800

ALTER TRIGGER

0x0000000000005000

DROP TRIGGER

0x0000000000014000

CREATE EXCEPTION

0x0000000000024000

ALTER EXCEPTION

0x0000000000044000

DROP EXCEPTION

0x0000000000084000

CREATE VIEW

0x0000000000104000

ALTER VIEW

0x0000000000204000

DROP VIEW

0x0000000000404000

CREATE DOMAIN

0x0000000000804000

ALTER DOMAIN

0x0000000001004000

DROP DOMAIN

0x0000000002004000

CREATE ROLE

0x0000000004004000

ALTER ROLE

0x0000000008004000

DROP ROLE

0x0000000010004000

CREATE INDEX

0x0000000020004000

ALTER INDEX

0x0000000040004000

DROP INDEX

0x0000000080004000

CREATE SEQUENCE

0x0000000100004000

ALTER SEQUENCE

0x0000000200004000

DROP SEQUENCE

0x0000000400004000

CREATE USER

0x0000000800004000

ALTER USER

0x0000001000004000

DROP USER

0x0000002000004000

CREATE COLLATION

0x0000004000004000

DROP COLLATION

0x0000008000004000

ALTER CHARACTER SET

0x0000010000004000

CREATE PACKAGE

0x0000020000004000

ALTER PACKAGE

0x0000040000004000

DROP PACKAGE

0x0000080000004000

CREATE PACKAGE BODY

0x0000100000004000

DROP PACKAGE BODY

0x0000200000004000

CREATE MAPPING

0x0000400000004000

ALTER MAPPING

0x0000800000004000

DROP MAPPING

0x7FFFFFFFFFFFDFFE

ANY DDL STATEMENT

For example a trigger with BEFORE CREATE PROCEDURE OR CREATE FUNCTION will be of type 0x0000000000004090, AFTER CREATE PROCEDURE OR CREATE FUNCTION — 0x0000000000004091, BEFORE DROP FUNCTION OR DROP EXCEPTION — 0x00000000000044200, AFTER DROP FUNCTION OR DROP EXCEPTION — 0x00000000000044201, BEFORE DROP TRIGGER OR DROP DOMAIN — 0x00000000001005000, AFTER DROP TRIGGER OR DROP DOMAIN — 0x00000000001005001.