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Last round of reference page editing.

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This commit is contained in:
Peter Eisentraut
2003-05-04 02:23:16 +00:00
parent ac5fdea687
commit d1b4327d02
31 changed files with 3335 additions and 4547 deletions
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42
doc/src/sgml/ref/set_session_auth.sgml
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@ -1,9 +1,5 @@
<!-- $Header: /cvsroot/pgsql/doc/src/sgml/ref/set_session_auth.sgml,v 1.8 2003/02/19 04:06:28 momjian Exp $ -->
<!-- $Header: /cvsroot/pgsql/doc/src/sgml/ref/set_session_auth.sgml,v 1.9 2003/05/04 02:23:16 petere Exp $ -->
<refentry id="SQL-SET-SESSION-AUTHORIZATION">
<docinfo>
<date>2001-04-21</date>
</docinfo>
<refmeta>
<refentrytitle id="sql-set-session-authorization-title">SET SESSION AUTHORIZATION</refentrytitle>
<refmiscinfo>SQL - Language Statements</refmiscinfo>
@ -16,7 +12,7 @@
<refsynopsisdiv>
<synopsis>
SET [ SESSION | LOCAL ] SESSION AUTHORIZATION <replaceable class="PARAMETER">username</replaceable>
SET [ SESSION | LOCAL ] SESSION AUTHORIZATION <replaceable class="parameter">username</replaceable>
SET [ SESSION | LOCAL ] SESSION AUTHORIZATION DEFAULT
RESET SESSION AUTHORIZATION
</synopsis>
@ -28,11 +24,10 @@ RESET SESSION AUTHORIZATION
<para>
This command sets the session user identifier and the current user
identifier of the current SQL-session context to be <replaceable
class="PARAMETER">username</replaceable>. The user name may be
written as either an identifier or a string literal. The session
user identifier is valid for the duration of a connection; for
example, it is possible to temporarily become an unprivileged user
and later switch back to become a superuser.
class="parameter">username</replaceable>. The user name may be
written as either an identifier or a string literal. Using this
command, it is possible, for example, to temporarily become an
unprivileged user and later switch back to become a superuser.
</para>
<para>
@ -52,7 +47,7 @@ RESET SESSION AUTHORIZATION
</para>
<para>
The <option>SESSION</> and <option>LOCAL</> modifiers act the same
The <literal>SESSION</> and <literal>LOCAL</> modifiers act the same
as for the regular <xref linkend="SQL-SET" endterm="SQL-SET-title">
command.
</para>
@ -60,9 +55,8 @@ RESET SESSION AUTHORIZATION
<para>
The <literal>DEFAULT</> and <literal>RESET</> forms reset the session
and current user identifiers to be the originally authenticated user
name. These forms are always accepted.
name. These forms may be executed by any user.
</para>
</refsect1>
<refsect1>
@ -88,18 +82,16 @@ SELECT SESSION_USER, CURRENT_USER;
<refsect1>
<title>Compatibility</title>
<simpara>SQL99</simpara>
<para>
SQL99 allows some other expressions to appear in place of the
literal <parameter>username</parameter> which are not important in
practice. <application>PostgreSQL</application> allows identifier
syntax (<literal>"username"</literal>), which SQL does not. SQL
does not allow this command during a transaction;
<application>PostgreSQL</application> does not make
this restriction because there is no reason to. The
privileges necessary to execute this command are left
implementation-defined by the standard.
The SQL standard allows some other expressions to appear in place
of the literal <replaceable>username</replaceable> which are not
important in practice. <application>PostgreSQL</application>
allows identifier syntax (<literal>"username"</literal>), which SQL
does not. SQL does not allow this command during a transaction;
<application>PostgreSQL</application> does not make this
restriction because there is no reason to. The privileges
necessary to execute this command are left implementation-defined
by the standard.
</para>
</refsect1>
</refentry>