52.45. pg_rewrite

pg_rewrite

The catalog pg_rewrite stores rewrite rules for tables and views.

Column Type Description
oid `oid` Row identifier
rulename `name` Rule name
ev_class `oid` (references pg_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 (enum) session_replication_role configuration parameter](braised:ref/runtime-config-client#session-replication-role-enum-session-replication-role-configuration-parameter) 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

Column Type

Description

oid oid

Row identifier

rulename name

Rule name

ev_class oid (references pg_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 (enum)

   session_replication_role configuration parameter](braised:ref/runtime-config-client#session-replication-role-enum-session-replication-role-configuration-parameter) 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_rewrite Columns

pg_class.relhasrules must be true if a table has any rules in this catalog.