CREATE ACCESS METHOD

CREATE ACCESS METHOD — Define a new access method

Synopsis

CREATE ACCESS METHOD name

TYPE access_method_type

HANDLER handler_function

Synopsis

CREATE ACCESS METHOD creates a new access method.

The access method name must be unique within the database.

Only superusers can define new access methods.

Parameters

name

The name of the access method to be created.

access_method_type

This clause specifies the type of access method to be defined. Currently only TABLE and INDEX are supported.

handler_function

handler_function is the name of a previously registered function (may be schema-qualified) that represents the access method to be created. The handler function must be declared to accept a single argument of type internal, and its return type depends on the access method type; for TABLE access methods it must be table_am_handler, and for INDEX access methods it must be index_am_handler. The C-level API that the handler function must implement depends on the access method type.

Examples

# Create an index access method heptree with handler function heptree_handler:

CREATE ACCESS METHOD heptree TYPE INDEX HANDLER heptree_handler;

See Also

DROP ACCESS METHOD, CREATE OPERATOR CLASS, CREATE OPERATOR FAMILY