CREATE ACCESS METHOD — define a new access method
CREATE ACCESS METHOD
CREATE ACCESS METHOD creates a new
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 is supported at present.
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
methods, it must be
C-level API that the handler function must implement varies
depending on the type of access method. The index access method API
is described in Chapter 60.
Create an index access method
heptree with handler function
CREATE ACCESS METHOD heptree TYPE INDEX HANDLER heptree_handler;
CREATE ACCESS METHOD is a
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