51.46. pg_rewrite #

The catalog pg_rewrite stores rewrite rules for tables and views.

Table 51.46. pg_rewrite Columns

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 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.

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