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Update CREATE TABLE AS docs to reflect the fact that CREATE TABLE AS was 

added to the SQL:2003 standard.
This commit is contained in:
Neil Conway 2004-09-23 03:43:57 +00:00
parent 6a84723d7d
commit 505d9be3e6
1 changed files with 29 additions and 6 deletions
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35
doc/src/sgml/ref/create_table_as.sgml
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@ -1,5 +1,5 @@
<!--
$PostgreSQL: pgsql/doc/src/sgml/ref/create_table_as.sgml,v 1.23 2004/08/24 00:06:51 neilc Exp $
$PostgreSQL: pgsql/doc/src/sgml/ref/create_table_as.sgml,v 1.24 2004/09/23 03:43:57 neilc Exp $
PostgreSQL documentation
-->
@ -166,11 +166,34 @@ CREATE [ [ GLOBAL | LOCAL ] { TEMPORARY | TEMP } ] TABLE <replaceable>table_name
<title>Compatibility</title>
<para>
This command is modeled after an <productname>Oracle</productname>
feature. There is no command with equivalent functionality in
the SQL standard. However, a combination of <literal>CREATE
TABLE</literal> and <literal>INSERT ... SELECT</literal> can
accomplish the same thing with little more effort.
<command>CREATE TABLE AS</command> is specified by the SQL2003
standard. There are some small differences between the definition
of the command in SQL2003 and its implementation in
<productname>PostgreSQL</>:
<itemizedlist spacing="compact">
<listitem>
<para>
The standard requires parentheses around the subquery clause; in
<productname>PostgreSQL</productname>, these parentheses are
optional.
</para>
</listitem>
<listitem>
<para>
The standard defines an <literal>ON COMMIT</literal> clause;
this is not currently implemented by <productname>PostgreSQL</>.
</para>
</listitem>
<listitem>
<para>
The standard defines a <literal>WITH DATA</literal> clause;
this is not currently implemented by <productname>PostgreSQL</>.
</para>
</listitem>
</itemizedlist>
</para>
</refsect1>