DROP RULE — remove a rewrite rule
DROP RULE [ IF EXISTS ]name
ONrelation
[ CASCADE | RESTRICT ]
IF EXISTS
Do not throw an error if the rule does not exist. A notice is issued in this case.
name
The name of the rule to drop.
relation
The name (optionally schema-qualified) of the table or view that the rule applies to.
CASCADE
Automatically drop objects that depend on the rule.
RESTRICT
Refuse to drop the rule if any objects depend on it. This is the default.