# 52.43. pg_rewrite
The catalog pg_rewrite
stores rewrite rules for tables and views.
Table 52.43. 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.