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Add note that PREPARE TRANSACTION is for transaction managers, not

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regular applications. Also add a comment pointing out that tab-complition
for PREPARE TRANSACTION is missing on purpose.
This commit is contained in:
Heikki Linnakangas 2010-01-25 18:23:10 +00:00
parent e7dcfd05f3
commit 1d1f425f8d
2 changed files with 16 additions and 2 deletions
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11
doc/src/sgml/ref/prepare_transaction.sgml
View File

@ -1,5 +1,5 @@
<!--
$PostgreSQL: pgsql/doc/src/sgml/ref/prepare_transaction.sgml,v 1.9 2009/04/23 00:23:45 tgl Exp $
$PostgreSQL: pgsql/doc/src/sgml/ref/prepare_transaction.sgml,v 1.10 2010/01/25 18:23:10 heikki Exp $
PostgreSQL documentation
-->
@ -82,6 +82,15 @@ PREPARE TRANSACTION <replaceable class="PARAMETER">transaction_id</replaceable>
<refsect1>
<title>Notes</title>
<para>
<command>PREPARE TRANSACTION</> is not intended for use in applications
or interactive sessions. It's purpose is to allow an external
transaction manager to perform atomic global transactions across multiple
databases or other transactional resources. Unless you're writing a
transaction manager, you probably shouldn't be using <command>PREPARE
TRANSACTION</>.
</para>
<para>
This command must be used inside a transaction block. Use <xref
linkend="sql-begin" endterm="sql-begin-title"> to start one.

7
src/bin/psql/tab-complete.c
View File

@ -3,7 +3,7 @@
*
* Copyright (c) 2000-2010, PostgreSQL Global Development Group
*
* $PostgreSQL: pgsql/src/bin/psql/tab-complete.c,v 1.191 2010/01/22 16:40:19 rhaas Exp $
* $PostgreSQL: pgsql/src/bin/psql/tab-complete.c,v 1.192 2010/01/25 18:23:09 heikki Exp $
*/
/*----------------------------------------------------------------------
@ -1882,6 +1882,11 @@ psql_completion(char *text, int start, int end)
COMPLETE_WITH_LIST(list_PREPARE);
}
/*
* PREPARE TRANSACTION is missing on purpose. It's intended for transaction
* managers, not for manual use in interactive sessions.
*/
/* REASSIGN OWNED BY xxx TO yyy */
else if (pg_strcasecmp(prev_wd, "REASSIGN") == 0)
COMPLETE_WITH_CONST("OWNED");