Each heap relation has a Visibility Map (VM) to keep track of which pages contain only tuples that are known to be visible to all active transactions; it also keeps track of which pages contain only ...

ALTER ROLE changes the attributes of a PostgreSQL role. The first variant of this command listed in the synopsis can change many of the role attributes that can be specified in CREATE ROLE. (All the ...

39.1. Overview of Event Trigger Behavior Home 39.3. Writing Event Trigger Functions in C ...

are that the materialized view cannot subsequently be directly updated and that the query used to create the materialized view is stored in exactly the same way that a view's query is stored, so that ...

pg_waldump displays the write-ahead log (WAL) and is mainly useful for debugging or educational purposes. This utility can only be run by the user who installed the server, because it requires ...

There is no DROP GROUP statement in the SQL standard.

CREATE RULE defines a new rule applying to a specified table or view. CREATE OR REPLACE RULE will either create a new rule, or replace an existing rule of the same name for the same table. The name of ...

ALTER SEQUENCE changes the parameters of an existing sequence generator. Any parameters not specifically set in the ALTER SEQUENCE command retain their prior settings. Changing the data type ...