简体中文

DROP POLICY

Removes a row-level security policy from a table.

Synopsis

DROP POLICY [ IF EXISTS ] <name> ON <table_name> [ CASCADE | RESTRICT ]

Description

DROP POLICY removes the specified policy from the table. Note that if the last policy is removed for a table and the table still has row-level security enabled via ALTER TABLE, then the default-deny policy will be used. ALTER TABLE ... DISABLE ROW LEVEL SECURITY can be used to disable row-level security for a table, whether policies for the table exist or not.

Parameters

IF EXISTS
- Do not throw an error if the policy does not exist. A notice is issued in this case.
name
- The name of the policy to drop.
table_name
- The name (optionally schema-qualified) of the table that the policy is on.
CASCADE
RESTRICT
- These key words have no effect, since there are no dependencies on policies.

Examples

To drop the policy called p1 on the table named my_table:

DROP POLICY p1 ON my_table;

Compatibility

DROP POLICY is a Database extension to the SQL standard.