CREATE PUBLICATION — define a new publication
CREATE PUBLICATIONname
[ FOR TABLE [ ONLY ]table_name
[ * ] [, ...] | FOR ALL TABLES ] [ WITH (publication_parameter
[=value
] [, ... ] ) ]
CREATE PUBLICATION
adds a new publication into the current database. The publication name must be distinct from the name of any existing publication in the current database.
A publication is essentially a group of tables whose data changes are intended to be replicated through logical replication. See Section 31.1 for details about how publications fit into the logical replication setup.
name
The name of the new publication.
FOR TABLE
Specifies a list of tables to add to the publication. If ONLY
is specified before the table name, only that table is added to the publication. If ONLY
is not specified, the table and all its descendant tables (if any) are added. Optionally, *
can be specified after the table name to explicitly indicate that descendant tables are included.
Only persistent base tables can be part of a publication. Temporary tables, unlogged tables, foreign tables, materialized views, regular views, and partitioned tables cannot be part of a publication. To replicate a partitioned table, add the individual partitions to the publication.
FOR ALL TABLES
Marks the publication as one that replicates changes for all tables in the database, including tables created in the future.
WITH ( publication_parameter
[= value
] [, ... ] )
This clause specifies optional parameters for a publication. The following parameters are supported:
publish
(string
)This parameter determines which DML operations will be published by the new publication to the subscribers. The value is comma-separated list of operations. The allowed operations are insert
, update
, delete
, and truncate
. The default is to publish all actions, and so the default value for this option is 'insert, update, delete, truncate'
.
If neither FOR TABLE
nor FOR ALL TABLES
is specified, then the publication starts out with an empty set of tables. That is useful if tables are to be added later.
The creation of a publication does not start replication. It only defines a grouping and filtering logic for future subscribers.
To create a publication, the invoking user must have the CREATE
privilege for the current database. (Of course, superusers bypass this check.)
To add a table to a publication, the invoking user must have ownership rights on the table. The FOR ALL TABLES
clause requires the invoking user to be a superuser.
The tables added to a publication that publishes UPDATE
and/or DELETE
operations must have REPLICA IDENTITY
defined. Otherwise those operations will be disallowed on those tables.
For an INSERT ... ON CONFLICT
command, the publication will publish the operation that results from the command. Depending on the outcome, it may be published as either INSERT
or UPDATE
, or it may not be published at all.
COPY ... FROM
commands are published as INSERT
operations.
DDL operations are not published.
Create a publication that publishes all changes in two tables:
CREATE PUBLICATION mypublication FOR TABLE users, departments;
Create a publication that publishes all changes in all tables:
CREATE PUBLICATION alltables FOR ALL TABLES;
Create a publication that only publishes INSERT
operations in one table:
CREATE PUBLICATION insert_only FOR TABLE mydata WITH (publish = 'insert');
CREATE PUBLICATION
is a PostgreSQL extension.