DROP STATISTICS
版本：11
DROP STATISTICS — remove extended statistics
DROP STATISTICS [ IF EXISTS ] name [, ...]
DROP STATISTICS removes statistics object(s) from the database. Only the statistics object's owner, the schema owner, or a superuser can drop a statistics object.IF EXISTSDo not throw an error if the statistics object does not exist. A notice is issued in this case.
nameThe name (optionally schema-qualified) of the statistics object to drop.
To destroy two statistics objects in different schemas, without failing if they don't exist:
DROP STATISTICS IF EXISTS
accounting.users_uid_creation,
public.grants_user_role;
There is no
DROP STATISTICS command in the SQL standard.