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+'\" t
+.\"     Title: CREATE ACCESS METHOD
+.\"    Author: The PostgreSQL Global Development Group
+.\" Generator: DocBook XSL Stylesheets vsnapshot <http://docbook.sf.net/>
+.\"      Date: 2023
+.\"    Manual: PostgreSQL 15.5 Documentation
+.\"    Source: PostgreSQL 15.5
+.\"  Language: English
+.\"
+.TH "CREATE ACCESS METHOD" "7" "2023" "PostgreSQL 15.5" "PostgreSQL 15.5 Documentation"
+.\" -----------------------------------------------------------------
+.\" * Define some portability stuff
+.\" -----------------------------------------------------------------
+.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+.\" http://bugs.debian.org/507673
+.\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html
+.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+.ie \n(.g .ds Aq \(aq
+.el       .ds Aq '
+.\" -----------------------------------------------------------------
+.\" * set default formatting
+.\" -----------------------------------------------------------------
+.\" disable hyphenation
+.nh
+.\" disable justification (adjust text to left margin only)
+.ad l
+.\" -----------------------------------------------------------------
+.\" * MAIN CONTENT STARTS HERE *
+.\" -----------------------------------------------------------------
+.SH "NAME"
+CREATE_ACCESS_METHOD \- define a new access method
+.SH "SYNOPSIS"
+.sp
+.nf
+CREATE ACCESS METHOD \fIname\fR
+    TYPE \fIaccess_method_type\fR
+    HANDLER \fIhandler_function\fR
+.fi
+.SH "DESCRIPTION"
+.PP
+\fBCREATE ACCESS METHOD\fR
+creates a new access method\&.
+.PP
+The access method name must be unique within the database\&.
+.PP
+Only superusers can define new access methods\&.
+.SH "PARAMETERS"
+.PP
+\fIname\fR
+.RS 4
+The name of the access method to be created\&.
+.RE
+.PP
+\fIaccess_method_type\fR
+.RS 4
+This clause specifies the type of access method to define\&. Only
+TABLE
+and
+INDEX
+are supported at present\&.
+.RE
+.PP
+\fIhandler_function\fR
+.RS 4
+\fIhandler_function\fR
+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\ \&63
+and the index access method API is described in
+Chapter\ \&64\&.
+.RE
+.SH "EXAMPLES"
+.PP
+Create an index access method
+heptree
+with handler function
+heptree_handler:
+.sp
+.if n \{\
+.RS 4
+.\}
+.nf
+CREATE ACCESS METHOD heptree TYPE INDEX HANDLER heptree_handler;
+.fi
+.if n \{\
+.RE
+.\}
+.SH "COMPATIBILITY"
+.PP
+\fBCREATE ACCESS METHOD\fR
+is a
+PostgreSQL
+extension\&.
+.SH "SEE ALSO"
+DROP ACCESS METHOD (\fBDROP_ACCESS_METHOD\fR(7)), CREATE OPERATOR CLASS (\fBCREATE_OPERATOR_CLASS\fR(7)), CREATE OPERATOR FAMILY (\fBCREATE_OPERATOR_FAMILY\fR(7))