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 | |
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.