Help Center/ GaussDB/ Developer Guide(Distributed_V2.0-2.x)/ System Catalogs and System Views/ System Catalogs/ PG_TRIGGER
Updated on 2025-08-19 GMT+08:00
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PG_TRIGGER

PG_TRIGGER records trigger information.

Table 1 PG_TRIGGER columns

Name

Type

Description

oid

oid

Row identifier (hidden attribute, which must be specified).

tgrelid

oid

OID of the table where the trigger is located.

tgname

name

Trigger name.

tgfoid

oid

Function to be called by the trigger.

tgtype

smallint

Trigger type.

tgenabled

"char"

O: The trigger is triggered in origin or local mode.

D: The trigger is disabled.

R: The trigger is triggered in replica mode.

A: The trigger is always triggered.

tgisinternal

Boolean

Internal trigger ID. If the value is true, it indicates an internal trigger.

tgconstrrelid

oid

Table referenced by the integrity constraint.

tgconstrindid

oid

Index of the integrity constraint.

tgconstraint

oid

OID of the constraint trigger in PG_CONSTRAINT.

tgdeferrable

Boolean

Whether the constraint trigger is of the DEFERRABLE type

  • t (true): yes.
  • f (false): no.

tginitdeferred

Boolean

Specifies whether the trigger is of the INITIALLY DEFERRED type.

  • t (true): yes
  • f (false): no

tgnargs

smallint

Number of input parameters of the trigger function.

tgattr

int2vector

Column ID specified by the trigger. If no column is specified, an empty array is used.

tgargs

bytea

Parameter specified in the trigger.

tgqual

pg_node_tree

WHEN condition of the trigger (NULL if the WHEN condition does not exist).

tgowner

oid

Trigger owner.
Parent topic: System Catalogs