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ALTER PUBLICATION

ALTER PUBLICATION — change the definition of a publication

Synopsis

ALTER PUBLICATION name ADD publication_object [, ...]
ALTER PUBLICATION name SET publication_object [, ...]
ALTER PUBLICATION name DROP publication_object [, ...]
ALTER PUBLICATION name SET ( publication_parameter [= value] [, ... ] )
ALTER PUBLICATION name OWNER TO { new_owner | CURRENT_ROLE | CURRENT_USER | SESSION_USER }
ALTER PUBLICATION name RENAME TO new_name

where publication_object is one of:

    TABLE [ ONLY ] table_name [ * ] [ ( column_name [, ... ] ) ] [ WHERE ( expression ) ] [, ... ]
    ALL TABLES IN SCHEMA { schema_name | CURRENT_SCHEMA } [, ... ]

Description

The command ALTER PUBLICATION can change the attributes of a publication.

The first three variants change which tables/schemas are part of the publication. The SET clause will replace the list of tables/schemas in the publication with the specified list; the existing tables/schemas that were present in the publication will be removed. The ADD and DROP clauses will add and remove one or more tables/schemas from the publication. Note that adding tables/schemas to a publication that is already subscribed to will require an ALTER SUBSCRIPTION ... REFRESH PUBLICATION action on the subscribing side in order to become effective. Note also that the combination of DROP with a WHERE clause is not allowed.

The fourth variant of this command listed in the synopsis can change all of the publication properties specified in CREATE PUBLICATION. Properties not mentioned in the command retain their previous settings.

The remaining variants change the owner and the name of the publication.

You must own the publication to use ALTER PUBLICATION. Adding a table to a publication additionally requires owning that table. The ADD ALL TABLES IN SCHEMA and SET ALL TABLES IN SCHEMA to a publication requires the invoking user to be a superuser. To alter the owner, you must also be a direct or indirect member of the new owning role. The new owner must have CREATE privilege on the database. Also, the new owner of a FOR ALL TABLES or FOR ALL TABLES IN SCHEMA publication must be a superuser. However, a superuser can change the ownership of a publication regardless of these restrictions.

Adding/Setting a table that is part of schema specified in ALL TABLES IN SCHEMA, adding/setting a schema to a publication that already has a table that is part of the specified schema or adding/setting a table to a publication that already has a table's schema as part of the specified schema is not supported.

Parameters

name

The name of an existing publication whose definition is to be altered.

table_name

Name of an existing table. If ONLY is specified before the table name, only that table is affected. If ONLY is not specified, the table and all its descendant tables (if any) are affected. Optionally, * can be specified after the table name to explicitly indicate that descendant tables are included.

Optionally, a column list can be specified. See CREATE PUBLICATION for details. Note that a subscription having several publications in which the same table has been published with different column lists is not supported. So, changing the column lists of the tables being subscribed could cause inconsistency of column lists among publications, in which case ALTER PUBLICATION will be successful but later the WalSender on the publisher or the subscriber may throw an error. In this scenario, the user needs to recreate the subscription after adjusting the column list or drop the problematic publication using ALTER SUBSCRIPTION ... DROP PUBLICATION and then add it back after adjusting the column list.

If the optional WHERE clause is specified, rows for which the expression evaluates to false or null will not be published. Note that parentheses are required around the expression. The expression is evaluated with the role used for the replication connection.

schema_name

Name of an existing schema.

SET ( publication_parameter [= value] [, ... ] )

This clause alters publication parameters originally set by CREATE PUBLICATION. See there for more information.

new_owner

The user name of the new owner of the publication.

new_name

The new name for the publication.

Examples

Change the publication to publish only deletes and updates:

ALTER PUBLICATION noinsert SET (publish = 'update, delete');

Add some tables to the publication:

ALTER PUBLICATION mypublication ADD TABLE users (user_id, firstname), departments;

Change the set of columns published for a table:

ALTER PUBLICATION mypublication SET TABLE users (user_id, firstname, lastname), TABLE departments;

Add schemas marketing and sales to the publication sales_publication:

ALTER PUBLICATION sales_publication ADD ALL TABLES IN SCHEMA marketing, sales;

Add tables users, departments and schema production to the publication production_publication:

ALTER PUBLICATION production_publication ADD TABLE users, departments, ALL TABLES IN SCHEMA production;

Compatibility

ALTER PUBLICATION is a PostgreSQL extension.