CREATE ACCESS METHOD — define a new access method
CREATE ACCESS METHOD
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.
The name of the access method to be created.
This clause specifies the type of access method to define. Only
INDEX are supported at present.
handler_function is the name (possibly schema-qualified) of a previously registered function that represents the access method. The handler function must be declared to take a single argument of type
internal, and its return type depends on the type of access method; 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 varies depending on the type of access method. The table access method API is described in Chapter 60 and the index access method API is described in Chapter 61.
Create an index access method
heptree with handler function
CREATE ACCESS METHOD heptree TYPE INDEX HANDLER heptree_handler;
CREATE ACCESS METHOD is a PostgreSQL extension.