PG_REWRITE

1: SELECT
2: UPDATE
3: INSERT
4: DELETE

PG_REWRITE records rewrite rules defined for tables and views.

**Table 1** PG_REWRITE columns
Name	Type	Description
oid	oid	Row identifier (hidden attribute, which must be specified)
rulename	name	Rule name
ev_class	oid	Name of the table that uses the rule
ev_attr	smallint	Column to which this rule applies (always 0 to indicate the entire table)
ev_type	"char"	Event type for the rule. 1: SELECT 2: UPDATE 3: INSERT 4: DELETE
ev_enabled	"char"	Controls the mode in which the rule is triggered. O: The rule is triggered in origin and local modes. D: The rule is disabled. R: The rule is triggered in replica mode. A: The rule is always triggered.
is_instead	Boolean	The value is true if the rule is of the INSTEAD type. Otherwise, the value is false.
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.