51.44. pg_rewrite
The catalog
pg_rewrite
stores rewrite rules for tables and views.
Table 51.44.
pg_rewrite
Columns
| Name | Type | References | Description |
|---|---|---|---|
oid
|
oid
|
Row identifier (hidden attribute; must be explicitly selected) | |
rulename
|
name
|
Rule name | |
ev_class
|
oid
|
|
The table this rule is for |
ev_type
|
char
|
Event type that the rule is for: 1 =
SELECT
, 2 =
UPDATE
, 3 =
INSERT
, 4 =
DELETE
|
|
ev_enabled
|
char
|
Controls in which
session_replication_role
modes
the rule fires.
O
= rule fires in
"
origin
"
and
"
local
"
modes,
D
= rule is disabled,
R
= rule fires in
"
replica
"
mode,
A
= rule fires always.
|
|
is_instead
|
bool
|
True if the rule is an
INSTEAD
rule
|
|
ev_qual
|
pg_node_tree
|
Expression tree (in the form of a
nodeToString()
representation) for the
rule's qualifying condition
|
|
ev_action
|
pg_node_tree
|
Query tree (in the form of a
nodeToString()
representation) for the
rule's action
|
Note
pg_class.relhasrules
must be true if a table has any rules in this catalog.