I have applied the following documentaiton patch that states a leading
underscore "shouldn't" be used, rather than prohibited.
---------------------------------------------------------------------------
Pavel Golub wrote:
>
> The following bug has been logged online:
>
> Bug reference: 2852
> Logged by: Pavel Golub
> Email address: pavel@microolap.com
> PostgreSQL version: 8.x
> Operating system: Windows XP
> Description: User-defined type name begins with the underscore
> character (_) can be created
> Details:
>
> Hello, pgsql-bugs.
>
> Documentation says:
> "User-defined type names cannot begin with the
> underscore character (_) and can only be 62
> characters long (or in general NAMEDATALEN - 2,
> rather than the NAMEDATALEN - 1 characters
> allowed for other names). Type names beginning
> with underscore are reserved for
> internally-created array type names. "
>
> However, such SQL may be executed:
>
> CREATE TYPE _my AS (id int4, id2 int4);
>
> And then server treats it as an array type. Thus next SQL will be executed
> too:
>
> CREATE TABLE my_table(
> my_arr my[]
> );
>
> Checked on PostgreSQL versions (Windows XP):
> 8.0.6
> 8.1.0
> 8.2.0
>
> ---------------------------(end of broadcast)---------------------------
> TIP 4: Have you searched our list archives?
>
> http://archives.postgresql.org
--
Bruce Momjian bruce@momjian.us
EnterpriseDB http://www.enterprisedb.com
+ If your life is a hard drive, Christ can be your backup. +
Index: doc/src/sgml/ref/create_type.sgml
===================================================================
RCS file: /cvsroot/pgsql/doc/src/sgml/ref/create_type.sgml,v
retrieving revision 1.64
diff -c -c -r1.64 create_type.sgml
*** doc/src/sgml/ref/create_type.sgml 16 Sep 2006 00:30:17 -0000 1.64
--- doc/src/sgml/ref/create_type.sgml 23 Dec 2006 01:05:31 -0000
***************
*** 452,459 ****
<title>Notes</title>
<para>
! User-defined type names cannot begin with the underscore character
! (<literal>_</literal>) and can only be 62 characters
long (or in general <symbol>NAMEDATALEN</symbol> - 2, rather than
the <symbol>NAMEDATALEN</symbol> - 1 characters allowed for other
names). Type names beginning with underscore are reserved for
--- 452,459 ----
<title>Notes</title>
<para>
! User-defined type names should not begin with the underscore character
! (<literal>_</literal>) and should only be 62 characters
long (or in general <symbol>NAMEDATALEN</symbol> - 2, rather than
the <symbol>NAMEDATALEN</symbol> - 1 characters allowed for other
names). Type names beginning with underscore are reserved for
