pg_rewrite
The catalog pg_rewrite stores rewrite rules for tables and views.
Table 52.44. 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
|
pg_class.relhasrules
must be true if a table has any rules in this catalog.