pg_rewrite

48.38. pg_rewrite

The catalog pg_rewrite stores rewrite rules for tables and views.

Table 48-38. pg_rewrite Columns

名前タイプReferences説明
oidoid Row identifier (hidden attribute; must be explicitly selected)
rulenamename Rule name
ev_classoidpg_class.oidThe table this rule is for
ev_typechar  Event type that the rule is for: 1 = SELECT, 2 = UPDATE, 3 = INSERT, 4 = DELETE
ev_enabledchar  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_insteadbool True if the rule is an INSTEAD rule
ev_qualpg_node_tree  Expression tree (in the form of a nodeToString() representation) for the rule's qualifying condition
ev_actionpg_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.