The catalog pg_rewrite stores rewrite rules for tables and views.
Table 49-40. pg_rewrite Columns
|oid||oid||Row identifier (hidden attribute; must be explicitly selected)|
|ev_class||oid||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|
Expression tree (in the form of a
Query tree (in the form of a
Note: pg_class.relhasrules must be true if a table has any rules in this catalog.