PostgreSQL 16.4 Support with Oracle Compatibility Dear Community Members, We are thrilled to announce the release ...

PostgreSQL provides various lock modes to control concurrent access to data in tables. These modes can be used for application-controlled locking in situations where MVCC does not give the desired ...

This section describes the detailed format of each message. Each is marked to indicate that it can be sent by a frontend (F), a backend (B), or both (F & B). Notice that although each message includes ...

The FROM clause derives a table from one or more other tables given in a comma-separated table reference list. When a table reference names a table that is the parent of a table inheritance hierarchy, ...

RETURN with an expression terminates the function and returns the value of expression to the caller. This form is used for PL/pgSQL functions that do not return a set. In a function that returns a ...

The [PostgreSQL Global Development Group]( today announced the release of [PostgreSQL 17]( the latest version of the world's most advanced ...

pg_restore — restore a PostgreSQL database from an archive file created by pg_dump Restore only the data, not the schema (data definitions). Table data, large objects, and sequence values are restored ...

CREATE SUBSCRIPTION adds a new subscription for the current database. The subscription name must be distinct from the name of any existing subscription in the database. The subscription represents a ...

Many companies provide hosting solutions based on PostgreSQL. Some also provide complete solutions including support contracts.

If you have pattern matching needs that go beyond this, consider writing a user-defined function in Perl or Tcl. While most regular-expression searches can be executed very quickly, regular ...

CREATE INDEX constructs an index on the specified column(s) of the specified relation, which can be a table or a materialized view. Indexes are primarily used to enhance database performance (though ...

CREATE FUNCTION defines a new function. CREATE OR REPLACE FUNCTION will either create a new function, or replace an existing definition. To be able to define a function, the user must have the USAGE ...